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107 lines
3.4 KiB
107 lines
3.4 KiB
package com.gyf.csams.uikit
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import android.app.Application
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import androidx.compose.ui.graphics.ImageBitmap
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import androidx.lifecycle.AndroidViewModel
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.MutableLiveData
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import androidx.lifecycle.viewModelScope
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import com.google.gson.reflect.TypeToken
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import com.gyf.csams.R
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import com.gyf.csams.util.SimpleCallback
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import com.gyf.csams.util.Token
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import com.gyf.csams.util.TokenManager
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import com.gyf.lib.util.HttpClient
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import com.gyf.lib.util.ImageUtil
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import com.orhanobut.logger.Logger
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import kotlinx.coroutines.Job
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import kotlinx.coroutines.delay
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import kotlinx.coroutines.launch
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sealed class BaseVo {
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abstract val token: Token
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}
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data class OnlyToken(
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override val token: Token = TokenManager.token ?: throw IllegalArgumentException("无法获取token")
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) : BaseVo()
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class ImageModel(application: Application, private val urlPath: String) :
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AndroidViewModel(application) {
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private val _image = MutableLiveData<ImageBitmap>()
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private val _imageUrls = MutableLiveData<List<String>?>()
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val image: LiveData<ImageBitmap> = _image
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private var job: Job? = null
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private val _error = MutableLiveData<String?>()
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val error: LiveData<String?> = _error
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fun clearError() {
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_error.value = null
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}
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/**
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* 加载默认图片
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*
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*/
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private fun defaultLoad() {
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viewModelScope.launch {
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_image.postValue(
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ImageUtil.getImage(
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getApplication(),
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R.drawable.ic_launcher_foreground
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)
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)
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}
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}
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/**
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* 循环加载网络图片
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*
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*/
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fun start() {
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Logger.i("启动轮播")
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if (job == null || job?.isCompleted == true || job?.isCancelled == true) {
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job = viewModelScope.launch {
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HttpClient.get(
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url = urlPath,
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SimpleCallback<List<String>>("获取轮播图", onSuccess = {
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_imageUrls.postValue(it.body)
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var index = 0
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_imageUrls.value?.apply {
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viewModelScope.launch {
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do {
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val imageBitmap =
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ImageUtil.getImage(
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context = getApplication(),
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data = get(index)
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)
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Logger.e("成功从image url:${get(index)}解析图片")
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imageBitmap?.apply {
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_image.postValue(this)
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}
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delay(5000)
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index = if (index == size - 1) 0 else index.plus(1)
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} while (job?.isActive == true)
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}
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}
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}, onFail = {
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Logger.e("无法从接口地址：${urlPath}获取图片url列表")
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_error.postValue(it)
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defaultLoad()
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}, type = object : TypeToken<List<String>>() {}.type)
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)
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}.apply {
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start()
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}
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}
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}
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fun cancel() {
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Logger.i("停止轮播")
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job?.cancel()
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}
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}
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