pan
4 years ago
parent
e8dfc71a90
commit
54ecee40c0
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package com.gyf.csams.association.model |
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|
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import androidx.lifecycle.LiveData |
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import androidx.lifecycle.MutableLiveData |
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import com.gyf.csams.uikit.ScrollList |
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import com.gyf.csams.uikit.StringForm |
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import kotlin.random.Random |
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|
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/** |
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* 题型 |
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* |
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*/ |
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enum class ExamType(val type:String){ |
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//选择题 |
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cq("选择题"), |
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//开放题 |
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oq("开放题") |
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} |
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sealed class Exam{ |
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abstract val examType:ExamType |
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abstract val question:StringForm |
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} |
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/** |
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* 开放题 |
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* |
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* @property examType 题型描述 |
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* @property question 问题 |
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*/ |
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data class OpenQuestionsVo( |
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override val examType: ExamType = ExamType.oq, override val question: StringForm |
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|
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) : Exam() |
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/** |
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* 选择题 |
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* |
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* @property examType 题型描述 |
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* @property answers 答案 |
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* @property rightAnswer 正确答案 |
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* @property question 问题 |
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*/ |
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data class ChoiceQuestionVo(override val examType: ExamType = ExamType.cq, |
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val answers:List<StringForm>, |
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val rightAnswer:Int, |
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override val question: StringForm |
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):Exam() |
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/** |
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* 题库状态管理 |
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* |
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*/ |
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/** |
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* 问题长度 |
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*/ |
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const val QUESTION_TEXT_LENGTH=30 |
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/** |
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* 选择题选项数 |
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*/ |
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const val ANSWER_SIZE=4 |
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/** |
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* 答案长度 |
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* |
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*/ |
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const val ANSWER_TEXT_LENGTH=15 |
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class ExamViewModel:ScrollList<Exam>() { |
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val questionIsNull: String = "问题不能为空" |
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val deleteLeastOne: String="至少保留一道题目" |
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val updateExam="更新题库" |
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val back="返回" |
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val menuName="入团题库" |
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val deleteTip="确定删除此题目？" |
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val addTip="确定添加此题目？" |
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val actionLabel="确定" |
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override val initSize = 10 |
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private val _newExam:MutableLiveData<Exam> = MutableLiveData(createExam(ExamType.cq)) |
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val newExam:LiveData<Exam> = _newExam |
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init { |
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load() |
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} |
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/** |
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* 切换题型 |
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* |
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*/ |
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fun switchType(exam: Exam){ |
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if(exam is ChoiceQuestionVo) _newExam.value=createExam(ExamType.oq) else _newExam.value=createExam(ExamType.cq) |
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} |
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/** |
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* 创建题目 |
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* |
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* @param type |
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* @return |
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*/ |
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private fun createExam(type: ExamType): Exam { |
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val question=StringForm(formDesc = "问题",textLength = QUESTION_TEXT_LENGTH) |
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return when(type){ |
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ExamType.cq-> ChoiceQuestionVo( |
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answers = ('A'..'D').map { StringForm(formDesc = "选项",textLength = ANSWER_TEXT_LENGTH,value = "选项$it") }, |
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rightAnswer = 0, |
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question = question |
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) |
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ExamType.oq-> OpenQuestionsVo(question = question) |
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} |
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} |
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/** |
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* 更新题目 |
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* |
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*/ |
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fun update(oldExam: Exam,newExam:Exam){ |
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if(oldExam==_newExam.value){ |
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_newExam.value=newExam |
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}else{ |
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_data.value?.apply { |
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this[indexOf(oldExam)]=newExam |
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val list = mutableListOf<Exam>() |
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list.addAll(this) |
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_data.value?.clear() |
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_data.value=list |
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} |
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} |
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} |
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/** |
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* TODO 更新题库 |
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* |
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* @param callback |
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*/ |
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fun updateExam(callback: (message: String) -> Unit){ |
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callback("功能尚未实现，敬请期待") |
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} |
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/** |
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* 加载题目 |
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* |
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*/ |
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override fun load() { |
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_data.value?.apply { |
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repeat(initSize) { |
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if (Random.nextBoolean()){ |
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add(OpenQuestionsVo(question = StringForm(formDesc = "问题",textLength = QUESTION_TEXT_LENGTH,value = "这是一道开放题：$size"))) |
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} else{ |
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add( |
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ChoiceQuestionVo( |
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question = StringForm(formDesc = "问题",textLength = QUESTION_TEXT_LENGTH,value = "这是一道选择题：$size"), |
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answers = ('A'..'D').map { StringForm(formDesc = "选项",textLength = ANSWER_TEXT_LENGTH,value = "选项$it") }, |
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rightAnswer = Random.nextInt(ANSWER_SIZE) |
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) |
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) |
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} |
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} |
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} |
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} |
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/** |
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*TODO 加载更多题目 |
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* |
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* @param callback |
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*/ |
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override fun loadMore(callback: (message: String) -> Unit) { |
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// _data.value?.apply { |
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// val list= mutableListOf<Exam>() |
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// list.addAll(this) |
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// list.apply { |
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// repeat(10) { |
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// if (Random.nextBoolean()) add(OpenQuestionsVo(question = "这是一道开放题：$size")) else add( |
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// ChoiceQuestionVo( |
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// question = "这是一道选择题：$size，请从选项中选出正确答案", |
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// answers = listOf("选项A", "选项B", "选项C", "选项D"), |
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// rightAnswer = 3 |
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// ) |
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// ) |
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// } |
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// } |
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// _data.postValue(list) |
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// callback("成功加载更多题目") |
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// } |
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// callback("功能尚未实现，敬请期待") |
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} |
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fun addQuestion() { |
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_data.value?.apply { |
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_newExam.value?.let{ |
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val list= mutableListOf<Exam>() |
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list.addAll(this) |
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list.add(it) |
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_data.postValue(list) |
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} |
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_newExam.value=createExam(ExamType.cq) |
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} |
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} |
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/** |
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* TODO 删除题目 |
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* |
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*/ |
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fun deleteQuestion(exam: Exam) { |
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_data.value?.apply { |
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val list = mutableListOf<Exam>() |
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remove(exam) |
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list.addAll(this) |
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_data.postValue(list) |
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} |
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} |
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} |
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@ -0,0 +1,306 @@ |
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package com.gyf.csams.association.ui |
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import android.os.Bundle |
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import androidx.activity.ComponentActivity |
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import androidx.activity.compose.setContent |
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import androidx.compose.foundation.background |
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import androidx.compose.foundation.layout.* |
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import androidx.compose.foundation.lazy.LazyColumn |
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import androidx.compose.foundation.lazy.rememberLazyListState |
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import androidx.compose.material.* |
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import androidx.compose.runtime.Composable |
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import androidx.compose.runtime.getValue |
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import androidx.compose.runtime.livedata.observeAsState |
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import androidx.compose.ui.Alignment |
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import androidx.compose.ui.Modifier |
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import androidx.compose.ui.platform.LocalContext |
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import androidx.compose.ui.res.painterResource |
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import androidx.compose.ui.unit.Dp |
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import androidx.compose.ui.unit.dp |
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import androidx.lifecycle.viewmodel.compose.viewModel |
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import com.gyf.csams.R |
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import com.gyf.csams.association.model.* |
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import com.gyf.csams.uikit.* |
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/** |
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* 题库管理 |
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* |
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*/ |
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class ExamActivity : ComponentActivity() { |
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override fun onCreate(savedInstanceState: Bundle?) { |
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super.onCreate(savedInstanceState) |
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setContent { |
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Body { scaffoldState -> |
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MainFrame(background = { Background(image = BackgroundImage.exam) }) { |
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Spacer(modifier = Modifier.weight(0.1F)) |
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Title(modifier = Modifier.weight(0.1F)) |
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Exam(modifier = Modifier.weight(0.8F)) |
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ShowSnackbar(scaffoldState = scaffoldState) |
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} |
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} |
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} |
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} |
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} |
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/** |
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* 底部按钮 |
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* |
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*/ |
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@Composable |
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private fun BottomButton( |
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modifier: Modifier = Modifier, |
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model: ExamViewModel = viewModel(), |
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scaffoldModel: ScaffoldModel = viewModel() |
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) { |
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val context = LocalContext.current as ExamActivity |
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Row(modifier = modifier, horizontalArrangement = Arrangement.Center) { |
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OutlinedButton(onClick = { |
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model.updateExam { scaffoldModel.update(message=it) } |
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}, modifier = Modifier.background(color = MaterialTheme.colors.primary)) { |
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Text(text = model.updateExam) |
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} |
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Spacer(modifier = Modifier.width(10.dp)) |
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OutlinedButton(onClick = { |
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context.onBackPressed() |
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}, modifier = Modifier.background(color = MaterialTheme.colors.secondary)) { |
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Text(text = model.back) |
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} |
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} |
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} |
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/** |
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* 标题 |
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* |
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* @param modifier |
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* @param model |
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*/ |
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@Composable |
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private fun Title(modifier: Modifier = Modifier, model: ExamViewModel = viewModel()) { |
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Row(horizontalArrangement = Arrangement.Center, modifier = modifier.fillMaxWidth()) { |
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Text(text = model.menuName, style = MaterialTheme.typography.h4) |
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} |
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} |
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@Composable |
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private fun ExamChild(it:Exam,examHeight: Dp,isAdd: Boolean=false){ |
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val questionWeight=0.3F |
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when (it) { |
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is OpenQuestionsVo -> ExamOQ( |
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openQuestionsVo = it, |
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modifier = Modifier.height(examHeight*questionWeight), |
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isAdd = isAdd |
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) |
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is ChoiceQuestionVo -> ExamCQ( |
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choiceQuestionVo = it, |
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modifier = Modifier.height(examHeight), |
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questionWeight = questionWeight, |
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isAdd = isAdd |
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) |
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} |
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} |
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/** |
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* 题目列表 |
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* |
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* @param modifier |
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* @param model |
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*/ |
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@Composable |
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private fun Exam( |
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modifier: Modifier = Modifier, |
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model: ExamViewModel = viewModel(), |
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scaffoldModel: ScaffoldModel = viewModel(), |
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examHeight: Dp = 350.dp |
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) { |
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val listState = rememberLazyListState() |
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val data by model.data.observeAsState() |
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val newExam by model.newExam.observeAsState() |
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LazyColumn(state = listState, modifier = modifier) { |
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data?.forEach { |
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item { |
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ExamChild(it = it, examHeight = examHeight) |
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Spacer(modifier = Modifier.height(20.dp)) |
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} |
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} |
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newExam?.let { |
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item { |
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Column { |
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OutlinedButton(onClick = { model.switchType(it) }) { |
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Text(text = "切换到${if (newExam is ChoiceQuestionVo) "开放题" else "选择题"}") |
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} |
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ExamChild(it = it, examHeight = examHeight,isAdd = true) |
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} |
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} |
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} |
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item { |
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Column { |
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Divider(color = MaterialTheme.colors.background) |
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Spacer(modifier = Modifier.height(30.dp)) |
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BottomButton(modifier = Modifier.fillMaxWidth()) |
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} |
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} |
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} |
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if (listState.layoutInfo.totalItemsCount - listState.firstVisibleItemIndex == model.initSize / 2 - 1) { |
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model.loadMore { scaffoldModel.update(message=it) } |
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} |
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} |
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/** |
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* 问题 |
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* |
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* @param modifier |
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* @param exam |
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*/ |
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@Composable |
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private fun Question(modifier: Modifier = Modifier, exam: Exam) { |
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BaseTextField( |
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form = exam.question, |
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modifier = modifier |
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.fillMaxSize() |
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.background(color = MaterialTheme.colors.background) |
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) |
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} |
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/** |
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* 操作按钮 |
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* |
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*/ |
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@Composable |
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private fun ActionButton(modifier: Modifier = Modifier, isAdd: Boolean, |
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model: ExamViewModel= viewModel(), |
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scaffoldModel: ScaffoldModel= viewModel(), |
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exam: Exam) { |
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val list by model.data.observeAsState() |
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val newExam by model.newExam.observeAsState() |
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Box( |
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contentAlignment = Alignment.Center, |
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modifier = modifier |
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) { |
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IconButton(onClick = { |
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if(isAdd){ |
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if((newExam?.question?.formValue?.value ?: "").isNotEmpty()){ |
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scaffoldModel.update(message=model.addTip,actionLabel = model.actionLabel){ |
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model.addQuestion() |
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} |
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}else{ |
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scaffoldModel.update(message = model.questionIsNull) |
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} |
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}else{ |
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if(list?.size==1){ |
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scaffoldModel.update(model.deleteLeastOne) |
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}else{ |
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scaffoldModel.update(message=model.deleteTip,actionLabel = model.actionLabel){ |
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model.deleteQuestion(exam = exam) |
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} |
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} |
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} |
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}) { |
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Icon( |
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painter = painterResource(id = if (isAdd) R.drawable.ic_add_select else R.drawable.ic_sami_select), |
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contentDescription = null |
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) |
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} |
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} |
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} |
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/** |
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* 开放题 |
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* |
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* @param openQuestionsVo |
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*/ |
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@Composable |
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private fun ExamOQ( |
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modifier: Modifier = Modifier, |
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openQuestionsVo: OpenQuestionsVo, |
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isAdd: Boolean = false |
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) { |
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Row(modifier = modifier) { |
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Question( |
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exam = openQuestionsVo, modifier = Modifier |
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.weight(0.8F) |
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.fillMaxHeight() |
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) |
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ActionButton( |
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modifier = Modifier |
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.weight(0.2F) |
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.fillMaxHeight(), |
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isAdd = isAdd, |
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exam = openQuestionsVo |
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) |
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} |
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} |
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/** |
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* 选择题 |
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* |
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* @param choiceQuestionVo |
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*/ |
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@Composable |
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private fun ExamCQ( |
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modifier: Modifier = Modifier, |
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choiceQuestionVo: ChoiceQuestionVo, |
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isAdd: Boolean = false, |
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model: ExamViewModel = viewModel(), |
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questionWeight:Float |
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) { |
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Row(modifier = modifier) { |
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Column( |
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modifier = Modifier |
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.weight(0.8F) |
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.fillMaxHeight() |
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) { |
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Question( |
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exam = choiceQuestionVo, |
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modifier = Modifier |
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.fillMaxWidth() |
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.weight(questionWeight) |
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) |
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Card( |
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backgroundColor = MaterialTheme.colors.secondaryVariant, |
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modifier = Modifier |
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.fillMaxWidth() |
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.weight(1 - questionWeight) |
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) { |
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choiceQuestionVo.answers.apply { |
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Column { |
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forEach { |
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Row(modifier = Modifier |
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.fillMaxWidth() |
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.weight(1F / ANSWER_SIZE)) { |
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val answerIndex: Int = indexOf(it) |
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val click = { |
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model.update( |
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oldExam = choiceQuestionVo, |
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newExam = choiceQuestionVo.copy(rightAnswer = answerIndex) |
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) |
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} |
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val isRightAnswer = |
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choiceQuestionVo.rightAnswer == answerIndex |
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RadioButton(selected = isRightAnswer, onClick = click) |
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BaseTextField(form = it) |
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} |
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} |
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} |
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} |
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} |
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} |
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ActionButton( |
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modifier = Modifier |
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.weight(0.2F) |
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.fillMaxHeight(), |
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isAdd = isAdd, |
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exam = choiceQuestionVo |
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) |
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} |
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} |
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@ -0,0 +1,111 @@ |
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package com.gyf.csams.util |
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import com.google.gson.* |
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import com.google.gson.reflect.TypeToken |
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import com.gyf.csams.association.model.* |
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import com.gyf.csams.uikit.StringForm |
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import java.lang.reflect.Type |
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class OpenQuestionsVoSerializer: JsonSerializer<OpenQuestionsVo> { |
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override fun serialize( |
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vo: OpenQuestionsVo?, |
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p1: Type?, |
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p2: JsonSerializationContext? |
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): JsonElement { |
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val gson= Gson() |
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val c = JsonObject() |
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c.add("examType", gson.toJsonTree(vo?.examType?.name)) |
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c.add("question",gson.toJsonTree(vo?.question?.formValue?.value)) |
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return c |
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} |
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} |
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|
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class OpenQuestionsVoDeserializer: JsonDeserializer<OpenQuestionsVo> { |
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override fun deserialize( |
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json: JsonElement?, |
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p1: Type?, |
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p2: JsonDeserializationContext? |
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): OpenQuestionsVo { |
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val root=json?.asJsonObject |
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val value=root?.get("question")?.asString |
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val question= StringForm(formDesc = "问题",textLength = QUESTION_TEXT_LENGTH) |
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if (value != null) { |
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question.onChange(value) |
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return OpenQuestionsVo(question = question) |
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}else{ |
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throw NullPointerException("问题无法解析！！！！") |
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} |
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} |
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} |
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|
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class ChoiceQuestionVoSerializer: JsonSerializer<ChoiceQuestionVo> { |
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override fun serialize( |
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vo: ChoiceQuestionVo?, |
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p1: Type?, |
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p2: JsonSerializationContext? |
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): JsonElement { |
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val gson= Gson() |
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val c = JsonObject() |
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c.add("examType", gson.toJsonTree(vo?.examType?.name)) |
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c.add("question",gson.toJsonTree(vo?.question?.formValue?.value)) |
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c.add("answers",gson.toJsonTree(vo?.answers)) |
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c.add("rightAnswer",gson.toJsonTree(vo?.rightAnswer)) |
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return c |
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} |
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} |
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|
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class ChoiceQuestionVoDeserializer: JsonDeserializer<ChoiceQuestionVo> { |
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override fun deserialize( |
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json: JsonElement?, |
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p1: Type?, |
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p2: JsonDeserializationContext? |
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): ChoiceQuestionVo { |
||||
val root=json?.asJsonObject |
||||
val value=root?.get("question")?.asString |
||||
val question=StringForm(formDesc = "问题",textLength = QUESTION_TEXT_LENGTH) |
||||
if (value != null) { |
||||
question.onChange(value) |
||||
val gson=Gson() |
||||
val answers:List<String> = gson.fromJson(root.get("answers"),object : TypeToken<List<String>>() {}.type) |
||||
if(answers.size!= ANSWER_SIZE){ |
||||
throw IllegalArgumentException("选项数量!=$QUESTION_TEXT_LENGTH") |
||||
} |
||||
val rightAnswer=root.get("rightAnswer").asInt |
||||
return ChoiceQuestionVo( |
||||
question = question, |
||||
answers = answers.map { StringForm(formDesc = "选项",textLength = ANSWER_TEXT_LENGTH,value=it) }, |
||||
rightAnswer = rightAnswer |
||||
) |
||||
}else{ |
||||
throw NullPointerException("问题无法解析！！！！") |
||||
} |
||||
} |
||||
} |
||||
|
||||
/** |
||||
* 题目反序列化 |
||||
* |
||||
*/ |
||||
class ExamDeserializer:JsonDeserializer<Exam>{ |
||||
companion object{ |
||||
val gson: Gson =GsonBuilder() |
||||
.registerTypeAdapter(OpenQuestionsVo::class.java,OpenQuestionsVoDeserializer()) |
||||
.registerTypeAdapter(ChoiceQuestionVo::class.java,ChoiceQuestionVoDeserializer()) |
||||
.create() |
||||
} |
||||
|
||||
override fun deserialize(json: JsonElement?, p1: Type?, p2: JsonDeserializationContext?): Exam { |
||||
val root=json?.asJsonObject |
||||
|
||||
val type=root?.get("examType")?.asString |
||||
|
||||
return when (gson.fromJson(type, ExamType::class.java)) { |
||||
ExamType.cq -> gson.fromJson(json, |
||||
object : TypeToken<ChoiceQuestionVo>() {}.type) |
||||
ExamType.oq -> gson.fromJson(json, |
||||
object : TypeToken<OpenQuestionsVo>() {}.type) |
||||
null->throw NullPointerException("无法识别题目类型！") |
||||
} |
||||
|
||||
} |
||||
} |
||||
@ -0,0 +1,9 @@ |
||||
<vector xmlns:android="http://schemas.android.com/apk/res/android" |
||||
android:width="200dp" |
||||
android:height="200dp" |
||||
android:viewportWidth="1024" |
||||
android:viewportHeight="1024"> |
||||
<path |
||||
android:fillColor="#FF000000" |
||||
android:pathData="M544,213.33v266.67H810.67v64H544V810.67h-64V544H213.33v-64h266.67V213.33z"/> |
||||
</vector> |
||||
@ -0,0 +1,9 @@ |
||||
<vector xmlns:android="http://schemas.android.com/apk/res/android" |
||||
android:width="200dp" |
||||
android:height="200dp" |
||||
android:viewportWidth="1024" |
||||
android:viewportHeight="1024"> |
||||
<path |
||||
android:fillColor="#FF000000" |
||||
android:pathData="M810.67,480v64H213.33v-64z"/> |
||||
</vector> |
||||
Loading…
Reference in new issue