如何解决：“实现与自定义视图的双向数据绑定时找不到属性'android：text'的getter？(How to solve: “cannot find getter for attribute 'android:text'” when implementing two-way data binding with custom view?)

 我经历了许多类似的问题，但没有一个答案似乎解决了我的问题。 我实现了一个我想与双向数据绑定兼容的自定义EditText 。 问题是，每次我尝试编译时，我得到的错误： 
 
Error:java.lang.IllegalStateException: failed to analyze: android.databinding.tool.util.LoggedErrorException: Found data binding errors.
****/ data binding error ****msg:Cannot find the getter for attribute 'android:text' with value type java.lang.String on com.app.toolkit.presentation.view.CustomEditText. file:/Users/humble-student/Home/workspace/android/application/app/src/main/res/layout/login_view.xml loc:68:8 - 81:69 ****\ data binding error ****

    at org.jetbrains.kotlin.analyzer.AnalysisResult.throwIfError(AnalysisResult.kt:57)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules(KotlinToJVMBytecodeCompiler.kt:137)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:158)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:61)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:107)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:51)
    at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:92)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:386)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:96)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:892)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:96)
    at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:137)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl.checkedCompile(CompileServiceImpl.kt:919)
    at 
 
 这是我的实现： 
 
 CustomEditText 
 
class CustomEditText @JvmOverloads constructor(
        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
) : LinearLayout(context, attrs, defStyleAttr) {

    // ...
    private lateinit var editText_input: EditText
    private lateinit var textView_errorMessage: TextView

    private var isErrorDisplayed = false
    private var inputTextOriginalColor: ColorStateList? = null

    init {
        orientation = VERTICAL
        clearContainerFormatting()

        createEditTextInput(context, attrs, defStyleAttr)
        createTextViewErrorMessage(context)

        addView(editText_input)
        addView(textView_errorMessage)
    }

    fun setError(message: String) {
        //...
    }

    fun getText(): String = editText_input.text.toString()

    fun setText(text: String) = editText_input.setText(text)

    // ...
}
 
 模型 
 
data class SampleData(
        private var _content: String
) : BaseObservable() {
    var content: String
        @Bindable get() = _content
        set(value) {
            _content = value
            notifyPropertyChanged(BR.content)
        }
}
 
 使用CustomView和数据绑定的客户端 
 
<?xml version="1.0" encoding="utf-8"?>

<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <data>

        <import type="android.view.View" />

        <variable
            name="data"
            type="SampleData" />

        <variable
            name="presenter"
            type="SamplePresenter" />
    </data>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:animateLayoutChanges="true"
        tools:context=".sample_view.presentation.view.SampleView">

        <NotificationPopup
            android:id="@+id/notificationPopup"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:clipToPadding="false"
            android:elevation="4dp"
            app:allowManualExit="true" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:gravity="center"
            android:orientation="vertical">

            <TextView
                android:id="@+id/textView_mirror"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif"
                android:text="@{data.content}"
                android:textSize="16sp"
                android:textStyle="bold"
                tools:text="test" />

            <CustomEditText
                android:id="@+id/customEditText_sample"
                style="@style/RegisterInput"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="Type anything"
                android:text="@={data.content}" />

            <Button
                android:id="@+id/button_validateInput"
                style="@style/Widget.AppCompat.Button.Colored"
                android:layout_width="150dp"
                android:layout_height="wrap_content"
                android:layout_marginEnd="8dp"
                android:layout_marginStart="8dp"
                android:layout_marginTop="8dp"
                android:onClick='@{(v) -> presenter.onValidateDataClick(customEditTextSample.getText())}'
                android:text="Validate Input" />
        </LinearLayout>
    </RelativeLayout>
</layout>
 
 PS：如果我替换常规EditText小部件的CustomEditText ，它可以很好地工作 

I went through many kinda-similar questions but none of the answers seemed to solve my problem. I implemented a custom EditText that I want to be compatible with two-way data binding. The problem is, every time I try to compile I get the error:
 
Error:java.lang.IllegalStateException: failed to analyze: android.databinding.tool.util.LoggedErrorException: Found data binding errors.
****/ data binding error ****msg:Cannot find the getter for attribute 'android:text' with value type java.lang.String on com.app.toolkit.presentation.view.CustomEditText. file:/Users/humble-student/Home/workspace/android/application/app/src/main/res/layout/login_view.xml loc:68:8 - 81:69 ****\ data binding error ****

    at org.jetbrains.kotlin.analyzer.AnalysisResult.throwIfError(AnalysisResult.kt:57)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules(KotlinToJVMBytecodeCompiler.kt:137)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:158)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:61)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:107)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:51)
    at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:92)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:386)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:96)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:892)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:96)
    at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:137)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl.checkedCompile(CompileServiceImpl.kt:919)
    at 
 
Here is my implementation:
 
CustomEditText
 
class CustomEditText @JvmOverloads constructor(
        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
) : LinearLayout(context, attrs, defStyleAttr) {

    // ...
    private lateinit var editText_input: EditText
    private lateinit var textView_errorMessage: TextView

    private var isErrorDisplayed = false
    private var inputTextOriginalColor: ColorStateList? = null

    init {
        orientation = VERTICAL
        clearContainerFormatting()

        createEditTextInput(context, attrs, defStyleAttr)
        createTextViewErrorMessage(context)

        addView(editText_input)
        addView(textView_errorMessage)
    }

    fun setError(message: String) {
        //...
    }

    fun getText(): String = editText_input.text.toString()

    fun setText(text: String) = editText_input.setText(text)

    // ...
}
 
Model
 
data class SampleData(
        private var _content: String
) : BaseObservable() {
    var content: String
        @Bindable get() = _content
        set(value) {
            _content = value
            notifyPropertyChanged(BR.content)
        }
}
 
Client that uses the CustomView with data binding
 
<?xml version="1.0" encoding="utf-8"?>

<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <data>

        <import type="android.view.View" />

        <variable
            name="data"
            type="SampleData" />

        <variable
            name="presenter"
            type="SamplePresenter" />
    </data>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:animateLayoutChanges="true"
        tools:context=".sample_view.presentation.view.SampleView">

        <NotificationPopup
            android:id="@+id/notificationPopup"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:clipToPadding="false"
            android:elevation="4dp"
            app:allowManualExit="true" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:gravity="center"
            android:orientation="vertical">

            <TextView
                android:id="@+id/textView_mirror"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif"
                android:text="@{data.content}"
                android:textSize="16sp"
                android:textStyle="bold"
                tools:text="test" />

            <CustomEditText
                android:id="@+id/customEditText_sample"
                style="@style/RegisterInput"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="Type anything"
                android:text="@={data.content}" />

            <Button
                android:id="@+id/button_validateInput"
                style="@style/Widget.AppCompat.Button.Colored"
                android:layout_width="150dp"
                android:layout_height="wrap_content"
                android:layout_marginEnd="8dp"
                android:layout_marginStart="8dp"
                android:layout_marginTop="8dp"
                android:onClick='@{(v) -> presenter.onValidateDataClick(customEditTextSample.getText())}'
                android:text="Validate Input" />
        </LinearLayout>
    </RelativeLayout>
</layout>
 
P.S.: If I replace CustomEditText for regular EditText widget, it works perfectly

原文：https://stackoverflow.com/questions/47849808