Android Studio 3.6。カナリア12
build.gradle:
buildscript {
ext.kotlin_version = '1.3.50'
ext.RETROFIT_VERSION = '2.6.0'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.Android.tools.build:gradle:3.6.0-alpha12'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
app/build.gradle:
apply plugin: 'com.Android.application'
apply plugin: 'kotlin-Android'
apply plugin: 'kotlin-Android-extensions'
apply plugin: "kotlin-kapt"
Android {
viewBinding {
enabled = true
}
dataBinding {
enabled = true
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
compileSdkVersion 29
defaultConfig {
vectorDrawables.useSupportLibrary = true
applicationId "com.Android.testproject.Android.kotlin"
minSdkVersion 23
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
レイアウトxml:
<?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="handler"
type="com.Android.testproject.Android.kotlin.coroutine_retrofit.ui.activity.CoroutinesRetrofitActivity" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout
Android:layout_width="match_parent"
Android:layout_height="match_parent">
<include
Android:id="@+id/toolBarContainer"
layout="@layout/tool_bar"
Android:title='@{@string/coroutine_retrofit}'
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.Android.material.button.MaterialButton
Android:id="@+id/buttonRetry"
Android:layout_width="wrap_content"
Android:layout_height="@dimen/min_height"
Android:visibility="gone"
Android:text="@string/retry"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolBarContainer" />
<androidx.recyclerview.widget.RecyclerView
Android:id="@+id/agentsRecyclerView"
Android:layout_width="0dp"
Android:layout_height="0dp"
Android:visibility="@{handler.agentList.size > 0 ? View.VISIBLE : View.GONE}"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolBarContainer"
tools:listitem="@layout/agent_list_item" />
<TextView
Android:id="@+id/noActivityTextView"
Android:layout_width="0dp"
Android:layout_height="wrap_content"
Android:gravity="center"
Android:text="@string/no_agents"
Android:visibility="@{handler.isVisibleNoItems ? View.VISIBLE : View.GONE}"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolBarContainer" />
<include
layout="@layout/progress_bar_layout"
Android:visibility="gone" />
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
ここprogress_bar_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:Android="http://schemas.Android.com/apk/res/Android"
xmlns:app="http://schemas.Android.com/apk/res-auto"
Android:id="@+id/containerProgressBarLayout"
Android:layout_width="match_parent"
Android:layout_height="match_parent"
Android:background="#4777"
Android:clickable="true"
Android:elevation="2dp"
Android:focusable="true">
<ProgressBar
Android:id="@+id/progressBar"
style="?android:attr/progressBarStyle"
Android:layout_width="@dimen/min_height"
Android:layout_height="@dimen/min_height"
Android:indeterminateTint="@color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
ここにCoroutinesRetrofitActivity.kt
class CoroutinesRetrofitActivity : AppCompatActivity(), AgentListItemAdapter.AdapterListener {
var agentList = ObservableArrayList<Agent>()
private lateinit var binding: CoroutinesRetrofitActivityBinding
private lateinit var coroutinesRetrofitViewModel: CoroutinesRetrofitViewModel
val isVisibleNoItems = ObservableBoolean()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = CoroutinesRetrofitActivityBinding.inflate(layoutInflater)
setContentView(binding.root)
binding.setHandler(this);
this.coroutinesRetrofitViewModel.getIsShowProgress()
.observe(this, object : Observer<Boolean> {
override fun onChanged(isShowProgress: Boolean?) {
findViewById<View>(R.id.containerProgressBarLayout).visibility =
if (isShowProgress!!) View.VISIBLE else View.GONE
}
});
}
しかし、ビルドしようとするとエラーが発生します。
> Task :app:checkDebugDuplicateClasses
> Task :app:javaPreCompileDebug
> Task :app:compileDebugJavaWithJavac
\testProjects\Android\TestProjectAndroidKotlin\app\build\generated\source\kapt\debug\com\Android\testproject\Android\kotlin\databinding\CoroutinesRetrofitActivityBindingImpl.Java:48: error: incompatible types: ProgressBarLayoutBinding cannot be converted to ViewDataBinding
setContainedBinding(this.mboundView01);
しかし、私がこれをxmlから削除すると、
<include
layout="@layout/progress_bar_layout"
Android:visibility="gone" />
その後、エラーはなくなりました。
progress_bar_layout
の何が問題になっていますか?
このようなレイアウトにプログレスバーを含めるように指示すると:
<?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="handler"
type="com.Android.testproject.Android.kotlin.coroutine_retrofit.ui.activity.CoroutinesRetrofitActivity" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout
Android:layout_width="match_parent"
Android:layout_height="match_parent">
<include
Android:id="@+id/toolBarContainer"
layout="@layout/tool_bar"
Android:title='@{@string/coroutine_retrofit}'
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.Android.material.button.MaterialButton
Android:id="@+id/buttonRetry"
Android:layout_width="wrap_content"
Android:layout_height="@dimen/min_height"
Android:text="@string/retry"
Android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolBarContainer" />
<androidx.recyclerview.widget.RecyclerView
Android:id="@+id/agentsRecyclerView"
Android:layout_width="0dp"
Android:layout_height="0dp"
Android:visibility="@{handler.agentList.size > 0 ? View.VISIBLE : View.GONE}"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolBarContainer"
tools:listitem="@layout/agent_list_item" />
<TextView
Android:id="@+id/noActivityTextView"
Android:layout_width="0dp"
Android:layout_height="wrap_content"
Android:gravity="center"
Android:text="@string/no_agents"
Android:visibility="@{handler.isVisibleNoItems ? View.VISIBLE : View.GONE}"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolBarContainer" />
<ProgressBar
Android:id="@+id/containerProgressBarLayout"
style="?android:attr/progressBarStyle"
Android:layout_width="@dimen/min_height"
Android:layout_height="@dimen/min_height"
Android:indeterminateTint="@color/colorPrimary"
Android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
問題はなくなりました。
なぜinclude
が機能しないのですか?
include
layout="@layout/progress_bar_layout"
Android:visibility="gone" />
私はa_subsriber answer を使用しましたが、それは実際に機能しますが、xmlns nampespacesをレイアウトタグに配置し、ビューのタグには配置しないようにしてください
<layout xmlns:Android="http://schemas.Android.com/apk/res/Android">