增加社团注册

优化背景加载
通用文本框、底部提示封装

app/src/androidTest/java/com/gyf/csams/TestPreview.kt

@@ -0,0 +1,192 @@
+package com.gyf.csams
+
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.rotate
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.drawscope.rotate
+import androidx.compose.ui.text.SpanStyle
+import androidx.compose.ui.text.buildAnnotatedString
+import androidx.compose.ui.text.withStyle
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+
+@Composable
+fun MyBox(modifier: Modifier, canvasSize:Dp, canvasD:Float, content: @Composable BoxScope.() -> Unit){
+    Box(modifier = modifier,contentAlignment = Alignment.Center){
+        Canvas(modifier = Modifier.size(canvasSize)) {
+            rotate(canvasD){
+                drawRect(color = Color.Cyan)
+            }
+        }
+        content()
+    }
+}
+
+@Composable
+fun BoxSetSize(degrees:Float=0F, content: @Composable BoxScope.() -> Unit){
+    MyBox(modifier = Modifier
+        .height(300.dp)
+        .fillMaxWidth()
+        .background(Color.Gray)
+        .rotate(degrees = degrees), canvasSize = 200.dp, canvasD = 45F,content = content
+    )
+}
+
+@Composable
+fun BoxFillSize(degrees:Float=0F, content: @Composable BoxScope.() -> Unit){
+    MyBox(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(Color.LightGray), canvasSize = 100.dp, canvasD = 80F,content = content
+    )
+}
+
+//@Preview
+@Composable
+fun TestPreview(){
+    Column(modifier = Modifier.fillMaxSize()){
+        BoxSetSize {
+            Text(buildAnnotatedString {
+                withStyle(style = SpanStyle(fontSize = 30.sp)){
+                    append("前置子布局固定尺寸")
+                }
+            })
+        }
+
+        BoxFillSize {
+            Text(buildAnnotatedString {
+                withStyle(style = SpanStyle(fontSize = 30.sp)){
+                    append("后置子布局使用")
+                }
+                withStyle(style = SpanStyle(color= Color.Red,fontSize = 30.sp)){
+                    append("fillMaxSize修饰符")
+                }
+                withStyle(style = SpanStyle(fontSize = 30.sp)){
+                    append("填充父项允许的所有可用空间")
+                }
+            })
+        }
+    }
+}
+
+//@Preview
+@Composable
+fun TestPreview2(){
+    Column(modifier = Modifier.fillMaxSize()){
+        Text(buildAnnotatedString {
+            withStyle(style = SpanStyle(fontSize = 30.sp)){
+                append("如果使用示例1方法是")
+            }
+            withStyle(style = SpanStyle(color= Color.Red,fontSize = 30.sp)){
+                append("无法实现前置子布局填充父项所有可用空间，后置子布局固定尺寸")
+            }
+            withStyle(style = SpanStyle(fontSize = 30.sp)){
+                append("因为前置布局已经填充父项允许的所有可用空间，后置子布局没有剩余空间可用")
+            }
+
+        })
+
+        BoxFillSize {
+            Text(buildAnnotatedString {
+                withStyle(style = SpanStyle(fontSize = 30.sp)){
+                    append("前置子布局填充父项允许的所有可用空间")
+                }
+            })
+        }
+
+        BoxSetSize {
+            Text(buildAnnotatedString {
+                withStyle(style = SpanStyle(fontSize = 30.sp)){
+                    append("后置子布局固定尺寸")
+                }
+            })
+        }
+    }
+}
+
+//@Preview
+@Composable
+fun TestPreview3(){
+    Column(modifier = Modifier
+        .fillMaxSize()) {
+        Text(buildAnnotatedString {
+            withStyle(style = SpanStyle(fontSize = 30.sp)){
+                append("折衷方案是通过父项旋转180°实现，子项分别旋转180°复位可")
+            }
+            withStyle(style = SpanStyle(color= Color.Red,fontSize = 30.sp)){
+                append("实现前置子布局填充父项所有可用空间，后置子布局固定尺寸")
+            }
+            withStyle(style = SpanStyle(fontSize = 30.sp)){
+                append("，除了旋转，应该有更好的实现方式？")
+            }
+        })
+        Column(modifier = Modifier.rotate(180F)){
+            BoxSetSize(degrees = 180F) {
+                Text(buildAnnotatedString {
+                    withStyle(style = SpanStyle(fontSize = 30.sp)){
+                        append("前置子布局固定尺寸，通过旋转和后置子布局对调位置")
+                    }
+                })
+            }
+            BoxFillSize(degrees = 180F) {
+                Text(buildAnnotatedString {
+
+                    withStyle(style = SpanStyle(fontSize = 30.sp)){
+                        append("后置子布局使用")
+                    }
+                    withStyle(style = SpanStyle(color= Color.Red,fontSize = 30.sp)){
+                        append("fillMaxSize修饰符")
+                    }
+                    withStyle(style = SpanStyle(fontSize = 30.sp)){
+                        append("填充父项允许的所有可用空间，通过旋转和前置子布局对调位置")
+                    }
+                })
+            }
+        }
+    }
+
+}
+
+//@Preview
+@Composable
+fun TestPreview4(){
+    Column(modifier = Modifier
+        .fillMaxSize()) {
+
+
+        MyBox(modifier = Modifier
+            .fillMaxWidth()
+            .fillMaxHeight()
+            .background(Color.Gray), canvasSize = 100.dp, canvasD = 80F){
+            Text(text = "Box1")
+        }
+
+        MyBox(modifier = Modifier
+            .height(300.dp)
+            .fillMaxWidth()
+            .background(Color.Gray), canvasSize = 200.dp, canvasD = 45F){
+            Text(text = "Box2")
+        }
+    }
+}
+
+@Preview
+@Composable
+fun TestPreview5(){
+
+    Column {
+        Row {
+
+        }
+
+    }
+}
+

app/src/main/AndroidManifest.xml

@@ -3,6 +3,10 @@
     package="com.gyf.csams">
 
     <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <!--已启用分区存储-->
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="28" />
 
     <application
         android:allowBackup="true"
@@ -33,7 +37,11 @@
         </activity>
 
         <activity
-            android:name=".ui.MainActivity"
+            android:name=".main.ui.MainActivity"
+            android:exported="true">
+        </activity>
+
+        <activity android:name=".association.ui.RegAssociationActivity"
             android:exported="true">
         </activity>
     </application>

app/src/main/java/com/gyf/csams/APP.kt

@@ -1,19 +1,100 @@
 package com.gyf.csams
 
 import android.app.Application
+import android.content.res.Resources
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.util.LruCache
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.asImageBitmap
+import com.gyf.csams.uikit.BackgroundImage
 import com.orhanobut.logger.AndroidLogAdapter
 import com.orhanobut.logger.DiskLogAdapter
 import com.orhanobut.logger.Logger
 
 class APP : Application() {
 
+    private lateinit var memoryCache: LruCache<BackgroundImage, Bitmap>
+    // Get max available VM memory, exceeding this amount will throw an
+    // OutOfMemory exception. Stored in kilobytes as LruCache takes an
+    // int in its constructor.
+    private val maxMemory = (Runtime.getRuntime().maxMemory() / 1024).toInt()
+    // Use 1/8th of the available memory for this memory cache.
+    val cacheSize = maxMemory / 8
+
+    fun getImage(image: BackgroundImage, reqWidth: Int, reqHeight: Int): ImageBitmap {
+        val bitmap=memoryCache.get(image)
+        return if(bitmap==null){
+            Logger.i("reqWidth=$reqWidth,reqHeight=$reqHeight")
+            val cacheValue= decodeSampledBitmapFromResource(res = resources,image.id,reqWidth=reqWidth,reqHeight=reqHeight)
+            memoryCache.put(image, cacheValue)
+            Logger.i("添加缓存：${image}")
+            cacheValue.asImageBitmap()
+        }else{
+            Logger.i("从缓存读取：${image}")
+            bitmap.asImageBitmap()
+        }
+    }
+
+    private fun decodeSampledBitmapFromResource(
+        res: Resources,
+        resId: Int,
+        reqWidth: Int,
+        reqHeight: Int
+    ): Bitmap {
+        // First decode with inJustDecodeBounds=true to check dimensions
+        return BitmapFactory.Options().run {
+            inJustDecodeBounds = true
+            BitmapFactory.decodeResource(res, resId, this)
+
+            // Calculate inSampleSize
+            inSampleSize = calculateInSampleSize(this, reqWidth, reqHeight)
+
+            // Decode bitmap with inSampleSize set
+            inJustDecodeBounds = false
+
+            BitmapFactory.decodeResource(res, resId, this)
+        }
+    }
+
+    private fun calculateInSampleSize(options: BitmapFactory.Options, reqWidth: Int, reqHeight: Int): Int {
+        // Raw height and width of image
+        val (height: Int, width: Int) = options.run { outHeight to outWidth }
+        var inSampleSize = 1
+
+        if (height > reqHeight || width > reqWidth) {
+
+            val halfHeight: Int = height / 2
+            val halfWidth: Int = width / 2
+
+            // Calculate the largest inSampleSize value that is a power of 2 and keeps both
+            // height and width larger than the requested height and width.
+            while (halfHeight / inSampleSize >= reqHeight && halfWidth / inSampleSize >= reqWidth) {
+                inSampleSize *= 2
+            }
+        }
+
+        return inSampleSize
+    }
 
     override fun onCreate() {
         super.onCreate()
+
+        memoryCache = object : LruCache<BackgroundImage, Bitmap>(cacheSize) {
+
+            override fun sizeOf(key: BackgroundImage, bitmap: Bitmap): Int {
+                // The cache size will be measured in kilobytes rather than
+                // number of items.
+                return bitmap.byteCount / 1024
+            }
+        }
+
         //初始化日志
         Logger.addLogAdapter(AndroidLogAdapter())
         Logger.addLogAdapter(DiskLogAdapter())
 
         Logger.i("${BuildConfig.APP_NAME}启动")
+
+
     }
 }

app/src/main/java/com/gyf/csams/InitActivity.kt

@@ -10,8 +10,8 @@ import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.platform.LocalContext
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.gyf.csams.account.ui.AccountActivity
-import com.gyf.csams.ui.AnimationText
+import com.gyf.csams.main.ui.MainActivity
-import com.gyf.csams.ui.MainActivity
+import com.gyf.csams.uikit.AnimationText
 import com.orhanobut.logger.Logger
 
 class InitActivity : ComponentActivity() {
@@ -50,7 +50,7 @@ private fun Init(initViewModel:InitViewModel= viewModel()){
 
     when (isValid) {
         false ->  context.startActivity(Intent(context, AccountActivity::class.java))
-        true -> context.startActivity(Intent(context,MainActivity::class.java))
+        true -> context.startActivity(Intent(context, MainActivity::class.java))
     }
 
 }

app/src/main/java/com/gyf/csams/account/ui/AccountActivity.kt

@@ -31,8 +31,8 @@ import androidx.navigation.compose.rememberNavController
 import com.gyf.csams.BuildConfig
 import com.gyf.csams.account.model.AccountViewModel
 import com.gyf.csams.account.model.DialogMessage
-import com.gyf.csams.ui.AnimationText
+import com.gyf.csams.uikit.AnimationText
-import com.gyf.csams.ui.theme.CSAMSTheme
+import com.gyf.csams.uikit.theme.CSAMSTheme
 
 
 enum class AccountRoute{
@@ -178,7 +178,7 @@ private fun Account(accountViewModel: AccountViewModel = viewModel(),
 
 /**
  * 学号
- *
+ *TODO 需要把逻辑封装到[com.gyf.csams.uikit.BaseTextField]
  * @param accountViewModel
  */
 @Composable
@@ -297,9 +297,10 @@ private fun PasswordDialog(accountViewModel: AccountViewModel = viewModel(), mes
 }
 
 
+
 /**
  * 姓名文本框
- *
+ * TODO 需要把逻辑封装到[com.gyf.csams.uikit.BaseTextField]
  * @param name 姓名
  * @param accountViewModel
  */
@@ -328,7 +329,7 @@ private fun Name(name:String, accountViewModel: AccountViewModel = viewModel()){
 
 /**
  * 密码框
- *
+ *TODO 需要把逻辑封装到[com.gyf.csams.uikit.BaseTextField]
  * @param accountViewModel
  */
 @Composable

app/src/main/java/com/gyf/csams/association/model/RegAssociationViewModel.kt

@@ -0,0 +1,45 @@
+package com.gyf.csams.association.model
+
+import android.net.Uri
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.gyf.csams.uikit.StringForm
+
+
+data class Image(val uri:Uri,val createTime:Long,val size:Long)
+
+class RegAssociationViewModel : ViewModel() {
+
+    val frameDesc="社团注册资料"
+
+    val name= StringForm(formDesc = "社团名称",textLength = 5)
+    val desc = StringForm(formDesc = "社团简介",textLength = 30)
+
+
+    val _picture=MutableLiveData<Uri>()
+    val picture:LiveData<Uri> =_picture
+
+    val piciurePlaceHolder="请上传图片"
+
+    val errorPicture="图片加载失败，请联系管理员"
+
+    val deninedPermission="拒绝授权"
+
+    val register="注册"
+    val back="返回"
+
+    fun setPicture(uri: Uri){
+        _picture.value=uri
+    }
+
+    /**
+     * TODO 注册社团
+     *
+     * @param callback
+     */
+    fun register(callback: (value: String) -> Unit){
+        callback("功能尚未实现，敬请期待")
+    }
+
+}

app/src/main/java/com/gyf/csams/association/ui/RegAssociationActivity.kt

@@ -0,0 +1,258 @@
+package com.gyf.csams.association.ui
+
+import android.Manifest
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.graphics.BitmapFactory
+import android.net.Uri
+import android.os.Bundle
+import android.provider.MediaStore
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.compose.setContent
+import androidx.activity.result.ActivityResultLauncher
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.*
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.core.content.ContextCompat
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.gyf.csams.R
+import com.gyf.csams.association.model.RegAssociationViewModel
+import com.gyf.csams.uikit.*
+import com.gyf.csams.uikit.theme.CSAMSTheme
+import com.orhanobut.logger.Logger
+
+
+/**
+ * 注册社团
+ *
+ */
+class RegAssociationActivity: ComponentActivity(){
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            CSAMSTheme {
+                Body()
+            }
+        }
+    }
+
+}
+
+@Composable
+fun Body(model:RegAssociationViewModel= viewModel()){
+    val scaffoldState = rememberScaffoldState()
+    Scaffold(scaffoldState = scaffoldState) {
+        Surface(color = MaterialTheme.colors.background) {
+            MainFrame(background = { Background(BackgroundImage.reg_association,alpha = 0.7F) }) {
+                Spacer(
+                    modifier = Modifier
+                        .weight(0.1F)
+                )
+                Title(model = model)
+                Name(model = model)
+                Desc(
+                    model = model, modifier = Modifier
+                        .weight(0.1F)
+                        .fillMaxWidth()
+                )
+                Spacer(modifier = Modifier.weight(0.05F))
+                Logo(
+                    model = model, modifier = Modifier
+                        .weight(0.2F)
+                        .fillMaxWidth()
+                )
+                Spacer(modifier = Modifier.weight(0.05F))
+                BottomButton(modifier = Modifier.fillMaxWidth())
+                Spacer(modifier = Modifier.weight(0.05F))
+
+                ShowSnackbar(scaffoldState = scaffoldState)
+            }
+        }
+    }
+}
+
+
+//@Composable
+fun PermissionHandle(context: Context, launcher: ActivityResultLauncher<String>,onGranted:()->Unit){
+    // Check permission
+    when (PackageManager.PERMISSION_GRANTED) {
+        ContextCompat.checkSelfPermission(
+            context,
+            Manifest.permission.READ_EXTERNAL_STORAGE
+        ) -> {
+            // Some works that require permission
+            onGranted()
+        }
+        else -> {
+            // Asking for permission
+            launcher.launch(Manifest.permission.READ_EXTERNAL_STORAGE)
+        }
+    }
+}
+
+/**
+ * 社团Logo
+ *
+ * @param modifier
+ */
+@Composable
+fun Logo(model:RegAssociationViewModel= viewModel(),modifier: Modifier) {
+    val photoIntent=Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
+    photoIntent.type = "image/*"
+    val uri:Uri? by model.picture.observeAsState()
+
+    val resultLauncher=rememberLauncherForActivityResult(contract = ActivityResultContracts.StartActivityForResult()) {
+        when(it.resultCode){
+            Activity.RESULT_OK->{
+                Logger.i("uri=${it.data?.data}")
+                it.data?.data?.let { it1 -> model.setPicture(it1) }
+            }
+        }
+    }
+
+    val loadPicture={
+        //model.loadPicture(context)
+        resultLauncher.launch(photoIntent)
+    }
+
+    val launcher = rememberLauncherForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { isGranted: Boolean ->
+        if (isGranted) {
+            // Permission Accepted: Do something
+            loadPicture()
+        } else {
+            // Permission Denied: Do something
+            Logger.w(model.deninedPermission)
+        }
+    }
+
+
+
+    val context= LocalContext.current
+
+    Box(contentAlignment = Alignment.Center,modifier = modifier) {
+        Row(verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.Center,modifier = Modifier
+                .fillMaxSize()
+                .border(width = 1.dp, color = Color.Black)) {
+
+            if (uri == null) {
+                OutlinedButton(onClick = {
+                    when (PackageManager.PERMISSION_GRANTED) {
+                        ContextCompat.checkSelfPermission(
+                            context,
+                            Manifest.permission.READ_EXTERNAL_STORAGE
+                        ) -> {
+                            // Some works that require permission
+                            loadPicture()
+                        }
+                        else -> {
+                            // Asking for permission
+                            launcher.launch(Manifest.permission.READ_EXTERNAL_STORAGE)
+                        }
+                    }
+                }) {
+                    Text(text = model.piciurePlaceHolder)
+                }
+            } else {
+                uri.let {
+                    if(it!=null){
+                        Row {
+                            Image(bitmap = BitmapFactory.decodeStream(context.contentResolver.openInputStream(it))
+                                .asImageBitmap(), contentDescription = null)
+                            IconButton(onClick = {
+                                loadPicture()
+                            }) {
+                                Image(painter = painterResource(id = R.drawable.ic_exchange_rate), contentDescription = null)
+                            }
+                        }
+
+
+                    }else{
+                        Text(text = model.errorPicture)
+                    }
+                }
+            }
+
+
+        }
+
+    }
+
+
+}
+
+@Composable
+fun BottomButton(modifier: Modifier=Modifier,scaffoldModel: ScaffoldModel= viewModel(),model:RegAssociationViewModel= viewModel()){
+    val context= LocalContext.current as RegAssociationActivity
+    Row(modifier = modifier,horizontalArrangement = Arrangement.Center) {
+        OutlinedButton(onClick = {
+            model.register { scaffoldModel.update(it) }
+        },modifier = Modifier.background(color = MaterialTheme.colors.primary)) {
+            Text(text = model.register)
+        }
+        Spacer(modifier = Modifier.width(10.dp))
+        OutlinedButton(onClick = {
+            context.onBackPressed()
+        },modifier = Modifier.background(color = MaterialTheme.colors.secondary)) {
+            Text(text = model.back)
+        }
+    }
+
+}
+
+/**
+ * 菜单标题
+ *
+ */
+@Composable
+fun Title(model:RegAssociationViewModel= viewModel()){
+    Row(modifier = Modifier.fillMaxWidth(),horizontalArrangement = Arrangement.Center) {
+        Text(text = model.frameDesc,style = MaterialTheme.typography.h4)
+    }
+}
+
+/**
+ * 社团名称
+ * @param model
+ */
+@Composable
+fun Name(model:RegAssociationViewModel= viewModel()){
+    BaseTextField(form = model.name,singeLine = true,modifier = Modifier.fillMaxWidth())
+}
+
+/**
+ * 社团简介
+ * @param model
+ */
+@Composable
+fun Desc(model:RegAssociationViewModel= viewModel(),modifier:Modifier){
+    BaseTextField(form = model.desc,modifier = modifier)
+}
+
+
+@Preview
+@Composable
+fun NamePreview(){
+    val model=RegAssociationViewModel()
+    Body(model=model)
+
+}

app/src/main/java/com/gyf/csams/main/model/MainViewModel.kt

@@ -1,10 +1,11 @@
-package com.gyf.csams.ui.model
+package com.gyf.csams.main.model
 
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.gyf.csams.R
+import com.gyf.csams.uikit.StringForm
 import com.orhanobut.logger.Logger
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
@@ -20,7 +21,7 @@ class MarqueeViewModel:ViewModel() {
 
     private val _marqueeIndex=MutableLiveData(0)
     var marqueeIndex:LiveData<Int> = _marqueeIndex
-    var marqueeJob:Job? = null
+    private var marqueeJob:Job? = null
 
 
 
@@ -38,6 +39,10 @@ class MarqueeViewModel:ViewModel() {
     }
 }
 
+/**
+ * 海报轮播
+ *
+ */
 class CarouselViewModel:ViewModel(){
     val imageList= listOf(R.drawable.ic_launcher_foreground,R.drawable.ic_account_fill,R.drawable.ic_all_fill,R.drawable.ic_home_fill)
 
@@ -45,13 +50,13 @@ class CarouselViewModel:ViewModel(){
 
     val index:LiveData<Int> = _index
 
-    var job:Job? = null
+    private var job:Job? = null
 
     init {
         start()
     }
 
-    fun start(){
+    private fun start(){
         job = viewModelScope.launch {
             do{
                 _index.postValue(if (_index.value==imageList.size-1) 0 else _index.value?.plus(1))
@@ -60,50 +65,68 @@ class CarouselViewModel:ViewModel(){
         }
     }
 
-    fun stop(){
-        println("停止更新")
-        job?.cancel()
-    }
-
 }
 
-
+/**
+ * 社团
+ *
+ * @property name 社团名称
+ */
 data class AssociationDto(val name:String)
 
+/**
+ * 主页
+ *
+ */
+class MainViewModel:ViewModel(){
+    /**
+     * TODO 发送留言
+     *
+     */
+    fun sendMessage(callback: (value: String) -> Unit){
+        callback("功能尚未实现，敬请期待")
+    }
+
+    /**
+     * TODO 打开通知
+     *
+     * @param callback
+     */
+    fun openNotification(callback: (value: String) -> Unit){
+        callback("功能尚未实现，敬请期待")
+    }
+}
+
+/**
+ * 社团列表
+ *
+ */
 class ListViewModel:ViewModel(){
-    private val _name=MutableLiveData("")
+    val name = StringForm(formDesc = "社团名称",textLength = 5)
-    val name:LiveData<String> = _name
-    val nameDesc="社团名称"
-    val namePlaceholder="请输入$nameDesc"
 
-    private val _desc=MutableLiveData("")
+    val desc = StringForm(formDesc = "社团简介",textLength = 10)
-    val desc:LiveData<String> = _desc
-    val descDesc="社团简介"
-    val descPlaceholder="请输入$descDesc"
 
-    //注册请求响应信息
+    //社团列表加载数量
-    private val _snackBarMsg=MutableLiveData<String>()
+    val associationListSize=10
-    val snackBarMsg:LiveData<String> = _snackBarMsg
 
     //社团列表
     private val _associationList=MutableLiveData<MutableList<AssociationDto>>(mutableListOf())
     val associationDto:LiveData<MutableList<AssociationDto>> = _associationList
 
+    val searchDesc="搜索"
+
     init {
         loadAssociation()
     }
 
-    fun onChangeName(name:String){
+    /**
-        _name.value=name
+     * TODO 社团检索
-    }
+     *
-
+     * @param callback
-    fun onChangeDesc(desc:String){
+     */
-        _desc.value=desc
+    fun search(callback: (value: String) -> Unit){
-    }
+        Logger.i("搜索条件[社团名称：${name.formValue.value},社团简介:${desc.formValue.value}]")
-
+        callback("功能尚未实现，敬请期待")
-    fun search(){
-        Logger.i("使用社团名称：${_name.value},社团简介:${_desc.value} 搜索社团")
-        _snackBarMsg.value="搜索失败，请联系管理员"
     }
 
     /**
@@ -131,7 +154,7 @@ class ListViewModel:ViewModel(){
      * 加载更多社团列表
      *
      */
-    fun addMore(){
+    fun addMore(callback:(message:String) -> Unit){
         viewModelScope.launch {
             val c = _associationList.value
 
@@ -147,15 +170,26 @@ class ListViewModel:ViewModel(){
                 Logger.i("t.size=${t.size}")
                 _associationList.postValue(t)
                 Logger.i("加载更多社团size=${_associationList.value?.size}")
-                _snackBarMsg.value="成功加载更多社团"
+                callback("成功加载更多社团")
             }
-
-
         }
 
     }
+}
 
-    fun reset(){
+/**
-        _snackBarMsg.value=""
+ * 个人中心
+ *
+ */
+class CenterViewModel:ViewModel(){
+    val myAssociationDesc="我的社团"
+
+    /**
+     * TODO 打开我的社团
+     *
+     * @param callback
+     */
+    fun openMyAssociation(callback: (value: String) -> Unit){
+        callback("功能尚未实现，敬请期待")
     }
 }

app/src/main/java/com/gyf/csams/main/ui/MainActivity.kt

@@ -1,28 +1,25 @@
-package com.gyf.csams.ui
+package com.gyf.csams.main.ui
 
+import android.content.Intent
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.foundation.text.KeyboardActions
-import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.*
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
-import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.res.painterResource
-import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
@@ -32,13 +29,10 @@ import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
 import com.gyf.csams.R
-import com.gyf.csams.ui.model.AssociationDto
+import com.gyf.csams.association.ui.RegAssociationActivity
-import com.gyf.csams.ui.model.CarouselViewModel
+import com.gyf.csams.main.model.*
-import com.gyf.csams.ui.model.ListViewModel
+import com.gyf.csams.uikit.*
-import com.gyf.csams.ui.model.MarqueeViewModel
+import com.gyf.csams.uikit.theme.CSAMSTheme
-import com.gyf.csams.ui.theme.CSAMSTheme
-import com.orhanobut.logger.Logger
-import kotlinx.coroutines.launch
 
 
 /**
@@ -48,11 +42,14 @@ import kotlinx.coroutines.launch
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+
         setContent {
             CSAMSTheme {
                 Body()
             }
         }
+
+
     }
 }
 
@@ -67,25 +64,15 @@ fun Body() {
             NavHost(navController, startDestination = MainMenu.Main.name) {
                 composable(MainMenu.Main.name) {
                     Main(navController = navController)
+                    ShowSnackbar(scaffoldState = scaffoldState)
                 }
                 composable(MainMenu.List.name) {
                     AssociationList(navController = navController)
-
+                    ShowSnackbar(scaffoldState = scaffoldState)
-                    val model:ListViewModel= viewModel()
-                    val snackBarMsg:String by model.snackBarMsg.observeAsState("")
-
-                    if(snackBarMsg!=""){
-                        val scope= rememberCoroutineScope()
-                        scope.launch {
-                           scaffoldState.snackbarHostState.showSnackbar(
-                                message = snackBarMsg
-                            )
-                            model.reset()
-                        }
-                    }
                 }
                 composable(MainMenu.Center.name) {
                     Center(navController = navController)
+                    ShowSnackbar(scaffoldState = scaffoldState)
                 }
             }
         }
@@ -98,16 +85,20 @@ fun Body() {
  *
  */
 @Composable
-fun Center(navController: NavController){
+fun Center(model:CenterViewModel= viewModel(), scaffoldModel: ScaffoldModel= viewModel(), navController: NavController){
-    MainFrame(background = { CenterBackground() }, mainMenu = MainMenu.Center, nav = navController) {
+    MainFrame(background = { Background(image = BackgroundImage.center,alpha = 0.5F) }, mainMenu = MainMenu.Center, nav = navController) {
         Column(modifier = Modifier
             .weight(0.33F)
             .fillMaxWidth(),verticalArrangement = Arrangement.Bottom) {
-            Card(backgroundColor = Color.White) {
+            Card(backgroundColor = MaterialTheme.colors.background) {
-                Row(modifier = Modifier.fillMaxWidth(),verticalAlignment = Alignment.CenterVertically) {
+                Row(modifier = Modifier
+                    .fillMaxWidth()
+                    .clickable(onClick = {
+                        model.openMyAssociation { scaffoldModel.update(it) }
+                    }),verticalAlignment = Alignment.CenterVertically) {
                     Spacer(modifier = Modifier.weight(0.33F))
                     Row(modifier = Modifier.weight(0.33F),horizontalArrangement = Arrangement.Center) {
-                        Text(text = "我的社团")
+                        Text(text = model.myAssociationDesc)
                     }
                     Row(modifier = Modifier.weight(0.33F),horizontalArrangement = Arrangement.End) {
                         Icon(
@@ -126,27 +117,12 @@ fun Center(navController: NavController){
     }
 }
 
-/**
- * 个人中心背景
- *
- */
-@Composable
-fun CenterBackground(){
-    Image(
-        painter = painterResource(id = R.drawable.mb_bg_fb_28),
-        contentDescription = null,
-        contentScale = ContentScale.FillHeight,
-        alpha = 0.5F,
-        modifier = Modifier.fillMaxSize()
-    )
-}
-
 /**
  * 主界面
  */
 @Composable
 fun Main(navController: NavController) {
-    MainFrame(background = { MainBackground() }, mainMenu = MainMenu.Main, nav = navController) {
+    MainFrame(background = { Background(image = BackgroundImage.main) }, mainMenu = MainMenu.Main, nav = navController) {
         Column(modifier = Modifier.weight(0.33F)) {
             Notification()
             MessageBoard()
@@ -160,19 +136,6 @@ fun Main(navController: NavController) {
     }
 }
 
-/**
- * 主界面背景
- *
- */
-@Composable
-fun MainBackground() {
-    Image(
-        painter = painterResource(id = R.drawable.mb_bg_fb_08),
-        contentDescription = null,
-        contentScale = ContentScale.FillHeight,
-        modifier = Modifier.fillMaxSize()
-    )
-}
 
 /**
  * 社团列表
@@ -182,9 +145,7 @@ fun MainBackground() {
 @Composable
 fun AssociationList(navController: NavController) {
     MainFrame(
-        background = {
+        background = { Background(image = BackgroundImage.list) },
-            AssociationListBackground()
-                     },
         mainMenu = MainMenu.List,
         nav = navController
     ) {
@@ -195,45 +156,36 @@ fun AssociationList(navController: NavController) {
 }
 
 /**
- * 添加社团按钮
+ * 注册社团按钮
  *
  */
 @Composable
 fun RegisterAssociation() {
+    val context= LocalContext.current
     Row(
         horizontalArrangement = Arrangement.End,
         modifier = Modifier
             .fillMaxWidth()
             .padding(10.dp)
     ) {
-        Icon(
+        IconButton(onClick = {
-            painter = painterResource(id = R.drawable.ic_add_fill),
+            context.startActivity(Intent(context, RegAssociationActivity::class.java))
-            contentDescription = null,
+        }) {
-            modifier = Modifier.size(50.dp)
+            Icon(
-        )
+                painter = painterResource(id = R.drawable.ic_add_fill),
+                contentDescription = null,
+                modifier = Modifier.size(50.dp),
+            )
+        }
     }
 }
 
-/**
- * 社团列表背景
- *
- */
-@Composable
-fun AssociationListBackground() {
-    Image(
-        painter = painterResource(id = R.drawable.mb_bg_fb_07),
-        contentDescription = null,
-        contentScale = ContentScale.FillHeight,
-        modifier = Modifier.fillMaxSize()
-    )
-}
-
 /**
  * 社团列表
  *
  */
 @Composable
-fun AssociationListBody(model: ListViewModel = viewModel()) {
+fun AssociationListBody(model: ListViewModel = viewModel(),scaffoldModel: ScaffoldModel= viewModel()) {
     val associationList: MutableList<AssociationDto>? by model.associationDto.observeAsState()
     val listState = rememberLazyListState()
 
@@ -253,7 +205,7 @@ fun AssociationListBody(model: ListViewModel = viewModel()) {
                     }else{
                         Box(modifier = Modifier
                             .weight(0.35F)
-                            .border(width = 1.dp, color = Color.Black))
+                            .border(width = 1.dp, color = MaterialTheme.colors.onBackground))
                     }
                     Spacer(modifier = Modifier.weight(0.1F))
                 }
@@ -263,15 +215,9 @@ fun AssociationListBody(model: ListViewModel = viewModel()) {
             }
         }
     }
-    Logger.i("totalItemsCount=${listState.layoutInfo.totalItemsCount}" +
-            ",firstVisibleItemIndex=${listState.firstVisibleItemIndex}," +
-            "firstVisibleItemScrollOffset=${listState.firstVisibleItemScrollOffset}," +
-            "viewportStartOffset=${listState.layoutInfo.viewportStartOffset}" +
-            "viewportEndOffset=${listState.layoutInfo.viewportEndOffset}")
 
-
+    if(listState.layoutInfo.totalItemsCount-listState.firstVisibleItemIndex==model.associationListSize/2-1){
-    if(listState.layoutInfo.totalItemsCount-listState.firstVisibleItemIndex==4){
+        model.addMore { scaffoldModel.update(it) }
-        model.addMore()
     }
 }
 
@@ -296,48 +242,23 @@ fun Association(associationDto: AssociationDto) {
  *
  */
 @Composable
-fun AssociationSearch(model: ListViewModel = viewModel()) {
+fun AssociationSearch(model: ListViewModel = viewModel(),scaffoldModel: ScaffoldModel= viewModel()) {
-    val name: String by model.name.observeAsState("")
+
     Card(modifier = Modifier.padding(horizontal = 50.dp, vertical = 10.dp)) {
         Column {
-            Row {
+
-                val focusManager = LocalFocusManager.current
+            BaseTextField(form = model.name,singeLine = true,modifier = Modifier.padding(horizontal = 10.dp))
-                Spacer(modifier = Modifier.weight(0.05F))
+            BaseTextField(form = model.desc,singeLine = true,modifier = Modifier.padding(horizontal = 10.dp))
-                OutlinedTextField(
-                    modifier = Modifier.weight(0.4F), value = name,
-                    onValueChange = { model.onChangeName(it) },
-                    singleLine = true,
-                    label = { Text(text = model.nameDesc) },
-                    placeholder = { Text(text = model.namePlaceholder) },
-                    keyboardActions = KeyboardActions(onDone = { focusManager.clearFocus() }),
-                    keyboardOptions = KeyboardOptions.Default.copy(imeAction = ImeAction.Done)
-                )
-                Spacer(modifier = Modifier.weight(0.1F))
-                OutlinedTextField(
-                    modifier = Modifier.weight(0.4F), value = name,
-                    onValueChange = { model.onChangeDesc(it) },
-                    singleLine = true,
-                    label = { Text(text = model.descDesc) },
-                    placeholder = { Text(text = model.descPlaceholder) },
-                    keyboardActions = KeyboardActions(onDone = { focusManager.clearFocus() }),
-                    keyboardOptions = KeyboardOptions.Default.copy(imeAction = ImeAction.Done)
-                )
-                Spacer(modifier = Modifier.weight(0.05F))
-            }
             Spacer(
-                modifier = Modifier
+                modifier = Modifier.height(10.dp)
-                    .fillMaxWidth()
-                    .height(10.dp)
             )
             Row(horizontalArrangement = Arrangement.Center, modifier = Modifier.fillMaxWidth()) {
-                OutlinedButton(onClick = { model.search() }, modifier = Modifier.width(100.dp)) {
+                OutlinedButton(onClick = { model.search { scaffoldModel.update(it) } }, modifier = Modifier.width(100.dp)) {
-                    Text(text = "搜索")
+                    Text(text = model.searchDesc)
                 }
             }
             Spacer(
-                modifier = Modifier
+                modifier = Modifier.height(10.dp)
-                    .fillMaxWidth()
-                    .height(10.dp)
             )
         }
 
@@ -350,18 +271,22 @@ fun AssociationSearch(model: ListViewModel = viewModel()) {
  *
  */
 @Composable
-fun Notification() {
+fun Notification(mainViewModel: MainViewModel= viewModel(),scaffoldModel: ScaffoldModel= viewModel()) {
     Row(
         horizontalArrangement = Arrangement.End,
         modifier = Modifier
             .fillMaxWidth()
             .padding(10.dp)
     ) {
-        Icon(
+        IconButton(onClick = {
-            painter = painterResource(id = R.drawable.ic_notification),
+            mainViewModel.openNotification { scaffoldModel.update(it) }
-            contentDescription = null,
+        }) {
-            modifier = Modifier.size(50.dp)
+            Icon(
-        )
+                painter = painterResource(id = R.drawable.ic_notification),
+                contentDescription = null
+            )
+        }
+
     }
 }
 
@@ -376,7 +301,7 @@ fun MyBorder(content: @Composable BoxScope.() -> Unit) {
             modifier = Modifier
                 .border(
                     width = 1.dp,
-                    color = Color.Black,
+                    color = MaterialTheme.colors.onBackground,
                     shape = RoundedCornerShape(size = 20.dp)
                 ),
         ) {
@@ -390,18 +315,19 @@ fun MyBorder(content: @Composable BoxScope.() -> Unit) {
  *
  */
 @Composable
-fun MessageBoard(model: MarqueeViewModel = viewModel()) {
+fun MessageBoard(model: MarqueeViewModel = viewModel(),mainViewModel:MainViewModel= viewModel(),scaffoldModel: ScaffoldModel= viewModel()) {
     MyBorder {
         Row(
             verticalAlignment = Alignment.CenterVertically
         ) {
 
-            Icon(
+
-                painter = painterResource(id = R.drawable.ic_comments),
+            IconButton(onClick = { mainViewModel.sendMessage { scaffoldModel.update(it) } }) {
-                contentDescription = null,
+                Icon(
-                modifier = Modifier
+                    painter = painterResource(id = R.drawable.ic_comments),
-                    .size(50.dp)
+                    contentDescription = null,
-            )
+                )
+            }
             Row(
                 horizontalArrangement = Arrangement.Center,
                 modifier = Modifier

app/src/main/java/com/gyf/csams/uikit/BaseView.kt

@@ -1,4 +1,4 @@
-package com.gyf.csams.ui
+package com.gyf.csams.uikit
 
 import androidx.annotation.DrawableRes
 import androidx.compose.animation.Crossfade
@@ -6,14 +6,21 @@ import androidx.compose.animation.animateColor
 import androidx.compose.animation.core.*
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.*
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.State
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.DefaultAlpha
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
@@ -21,10 +28,13 @@ import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import androidx.navigation.compose.navigate
 import androidx.navigation.compose.rememberNavController
+import com.gyf.csams.APP
 import com.gyf.csams.R
-import com.gyf.csams.ui.model.CarouselViewModel
+import com.gyf.csams.main.model.CarouselViewModel
-import com.gyf.csams.ui.model.MarqueeViewModel
+import com.gyf.csams.main.model.MarqueeViewModel
-import com.gyf.csams.ui.theme.CSAMSTheme
+import com.gyf.csams.uikit.theme.CSAMSTheme
+import com.orhanobut.logger.Logger
+import kotlinx.coroutines.launch
 
 /**
  * 淡入淡出并且颜色变化文本
@@ -35,8 +45,8 @@ import com.gyf.csams.ui.theme.CSAMSTheme
 fun AnimationText(text:String){
     val infiniteTransition = rememberInfiniteTransition()
     val color by infiniteTransition.animateColor(
-        initialValue = Color.Red,
+        initialValue = MaterialTheme.colors.primary,
-        targetValue = Color.Green,
+        targetValue = MaterialTheme.colors.onPrimary,
         animationSpec = infiniteRepeatable(
             animation = tween(1000, easing = LinearEasing),
             repeatMode = RepeatMode.Reverse
@@ -94,7 +104,7 @@ fun MenuIconButton(_menu: MainMenu,menu: MainMenu,modifier: Modifier,onClick: ()
  */
 @Composable
 fun MainBottomAppBar(menu:MainMenu, nav: NavController, modifier: Modifier=Modifier){
-    BottomAppBar(backgroundColor = Color.White,modifier=modifier) {
+    BottomAppBar(backgroundColor = MaterialTheme.colors.background,modifier=modifier) {
         //图标宽度平等分
 
         val weight=1/(MainMenu.values().size*1.0f)
@@ -146,7 +156,12 @@ fun Marquee(model: MarqueeViewModel = viewModel(), content: @Composable BoxScope
     }
 }
 
-
+/**
+ * 跑马灯布局
+ *
+ * @param model
+ * @param offset
+ */
 @Composable
 fun MarqueeText(model: MarqueeViewModel = viewModel(), offset: State<Float>) {
     val poetryIndex: Int by model.marqueeIndex.observeAsState(0)
@@ -163,7 +178,7 @@ fun MarqueeText(model: MarqueeViewModel = viewModel(), offset: State<Float>) {
 }
 
 /**
- * 界面框架
+ * 导航界面框架
  *
  * @param background 背景
  * @param mainMenu 菜单
@@ -184,6 +199,20 @@ fun MainFrame( background:@Composable ()->Unit,mainMenu: MainMenu,nav: NavContro
     }
 }
 
+/**
+ * 界面框架
+ *
+ * @param background
+ * @param body
+ */
+@Composable
+fun MainFrame(background:@Composable ()->Unit,body:@Composable ColumnScope.()->Unit){
+    Box(modifier = Modifier.fillMaxSize()) {
+        background()
+        Column(content = body)
+    }
+}
+
 /**
  * 图片轮播
  *
@@ -200,34 +229,89 @@ fun Carousel(
     }
 }
 
-@Preview
+/**
+ * 通用文本输入框
+ *
+ * @param T
+ * @param modifier
+ * @param form
+ * @param singeLine
+ */
 @Composable
-fun CarouselPreview() {
+fun <T:StringForm> BaseTextField(modifier:Modifier=Modifier,form:T, singeLine:Boolean=false){
-    val model = CarouselViewModel()
+    val name: String by form.formValue.observeAsState("")
-//    ClubActivitiesImage(model = model)
+    val focusManager = LocalFocusManager.current
-
+    OutlinedTextField(
-
+        modifier = modifier,
-    Carousel(model = model) {
+        value = name,
-        Card(
+        onValueChange = {form.onChange(it)},
-            modifier = Modifier
+        label={ Text(text = form.formDesc)},
-                .height(300.dp)
+        placeholder = { Text(text = form.formPlaceholder)},
-                .fillMaxWidth()
+        singleLine = singeLine,
-//            .rotate(180F)
+        keyboardActions = KeyboardActions(onDone = { focusManager.clearFocus() }),
-        ) {
+        keyboardOptions = KeyboardOptions.Default.copy(imeAction = ImeAction.Done),
-            Image(
+        trailingIcon={ Text(text = "${name.length}/${form.textLength}") })
-                painter = painterResource(id = R.drawable.hot_activity_background),
+}
-                contentDescription = null
-            )
 
-            Image(
+/**
-                painter = painterResource(id = it),
+ * 底部提示
-                contentDescription = null
+ *
-            )
+ * @param model
+ * @param scaffoldState
+ */
+@Composable
+fun ShowSnackbar(model:ScaffoldModel= viewModel(),scaffoldState: ScaffoldState){
+    val message:String? by model.message.observeAsState()
+    message?.let {
+        Logger.i("message=$it")
+        LaunchedEffect(scaffoldState){
+            launch {
+                scaffoldState.snackbarHostState.showSnackbar(
+                    message = it
+                )
+                model.update()
+            }
         }
     }
 }
 
 
+/**
+ * 界面背景
+ *
+ * @property id 资源id
+ */
+enum class BackgroundImage(@DrawableRes val id:Int){
+    //主页
+    main(R.drawable.mb_bg_fb_08),
+    //社团列表
+    list(R.drawable.mb_bg_fb_07),
+    //个人中心
+    center(R.drawable.mb_bg_fb_28),
+    //注册社团
+    reg_association(R.drawable.mb_bg_fb_07)
+}
+
+/**
+ * 界面背景图
+ *
+ * @param image
+ * @param alpha
+ */
+@Composable
+fun Background(image: BackgroundImage, alpha:Float= DefaultAlpha){
+    val app= LocalContext.current.applicationContext as APP
+
+    BoxWithConstraints {
+        Image(
+            bitmap = app.getImage(image = image,reqHeight = maxHeight.value.toInt()/2,reqWidth = maxWidth.value.toInt()/2),
+            contentDescription = null,
+            contentScale = ContentScale.FillHeight,
+            alpha = alpha,
+            modifier = Modifier.fillMaxSize()
+        )
+    }
+}
 
 @Preview
 @Composable
@@ -235,7 +319,7 @@ fun AnimationTextPreview(){
     AnimationText(text = "6666")
 }
 
-@Preview
+//@Preview
 @Composable
 fun MyBottomAppBarPreview(){
     val nav= rememberNavController()

app/src/main/java/com/gyf/csams/uikit/ViewModel.kt

@@ -0,0 +1,41 @@
+package com.gyf.csams.uikit
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.orhanobut.logger.Logger
+
+interface FormLength{
+    val nameLengthError:String
+}
+
+abstract class FormName<T>(val formDesc:String){
+    protected val _formValue= MutableLiveData<T>()
+    val formValue: LiveData<T> = _formValue
+    val formPlaceholder="请输入$formDesc"
+
+    abstract fun onChange(value:T)
+}
+
+open class StringForm(formDesc: String, val textLength: Int) : FormName<String>(formDesc = formDesc),
+    FormLength {
+    override val nameLengthError="${formDesc}不能超过最大长度$textLength"
+
+    override fun onChange(value: String) {
+        if(value.length>textLength){
+            _formValue.value=value.slice(IntRange(0,textLength-1))
+        }else{
+            _formValue.value=value
+        }
+        Logger.i("${formDesc}更新值：${_formValue.value}")
+    }
+}
+
+class ScaffoldModel:ViewModel(){
+    private val _message=MutableLiveData<String>()
+    val message:LiveData<String> = _message
+
+    fun update(message:String?=null){
+        _message.value=message
+    }
+}

app/src/main/java/com/gyf/csams/uikit/theme/Color.kt

@@ -1,4 +1,4 @@
-package com.gyf.csams.ui.theme
+package com.gyf.csams.uikit.theme
 
 import androidx.compose.ui.graphics.Color
 

app/src/main/java/com/gyf/csams/uikit/theme/Shape.kt

@@ -1,4 +1,4 @@
-package com.gyf.csams.ui.theme
+package com.gyf.csams.uikit.theme
 
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.Shapes

app/src/main/java/com/gyf/csams/uikit/theme/Theme.kt

@@ -1,4 +1,4 @@
-package com.gyf.csams.ui.theme
+package com.gyf.csams.uikit.theme
 
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material.MaterialTheme

app/src/main/java/com/gyf/csams/uikit/theme/Type.kt

@@ -1,4 +1,4 @@
-package com.gyf.csams.ui.theme
+package com.gyf.csams.uikit.theme
 
 import androidx.compose.material.Typography
 import androidx.compose.ui.text.TextStyle

app/src/test/java/com/gyf/csams/ExampleUnitTest.kt

@@ -39,12 +39,5 @@ class ExampleUnitTest {
         println(     LocalDateTime.now().get(ChronoField.YEAR))
     }
 
-    @Test
-    fun testChunked(){
-        IntRange(0,13).chunked(3){
-            println(it)
-        }
-    }
-
 }