Android Kotlin "Unknown scene name: transitionManager" 第 41 章第 308 页
Android Kotlin "Unknown scene name: transitionManager" Chapter 41 pg 308
我正在阅读 android studio 3.0 development essentials Kotlin edition 一书，但遇到了问题。
应用程序崩溃，在 logcat 里面显示 "Unknown scene name: transitionManager"
由于我是新手，所以我还不明白这样的简单错误，希望有人能帮我解决这个错误。
我正在按照书中的每一步进行检查，所以我猜这是书中的错误？或者这本书变旧了
package com.ebookfrenzy.scenetransitions
import android.os.Build
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.support.annotation.RequiresApi
import android.transition.Scene
import android.view.View
import android.transition.TransitionManager
import android.transition.TransitionInflater
import android.transition.Transition
import kotlinx.android.synthetic.main.activity_scene_transitions.*
class SceneTransitionsActivity : AppCompatActivity() {
var scene1: Scene? = null
var scene2: Scene? = null
var transitionMgr: Transition? = null
@RequiresApi(Build.VERSION_CODES.KITKAT)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_scene_transitions)
transitionMgr = TransitionInflater.from(this)
.inflateTransition(R.transition.transition)
scene1 = Scene.getSceneForLayout(rootContainer,
R.layout.scene1_layout, this)
scene2 = Scene.getSceneForLayout(rootContainer,
R.layout.scene2_layout, this)
scene1?.enter()
}
fun goToScene2(view: View) {
TransitionManager.go(scene2, transitionMgr)
}
fun goToScene1(view: View) {
TransitionManager.go(scene1, transitionMgr)
}
}
Logcat
08-14 14:18:25.920 30350-30350/com.ebookfrenzy.scenetransitions E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ebookfrenzy.scenetransitions, PID: 30350
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ebookfrenzy.scenetransitions/com.ebookfrenzy.scenetransitions.SceneTransitionsActivity}: java.lang.RuntimeException: Unknown scene name: transitionManager
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2957)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3032)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6940)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
Caused by: java.lang.RuntimeException: Unknown scene name: transitionManager
at android.transition.TransitionInflater.createTransitionFromXml(TransitionInflater.java:181)
at android.transition.TransitionInflater.inflateTransition(TransitionInflater.java:79)
at com.ebookfrenzy.scenetransitions.SceneTransitionsActivity.onCreate(SceneTransitionsActivity.kt:27)
at android.app.Activity.performCreate(Activity.java:7174)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1220)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2910)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3032)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6940)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
08-14 14:18:25.994 30350-30406/com.ebookfrenzy.scenetransitions I/vndksupport: sphal namespace is not configured for this process. Loading /vendor/lib64/egl/libGLESv2_adreno.so from the current namespace instead.
08-14 14:18:25.999 30350-30406/com.ebookfrenzy.scenetransitions D/libEGL: loaded /vendor/lib64/egl/libGLESv2_adreno.so
项目XML的
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
android:id="@+id/rootContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.ebookfrenzy.scenetransitions.SceneTransitionsActivity">
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:onClick="goToScene2"
android:text="@string/one"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="16dp"
android:onClick="goToScene1"
android:text="@string/two"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/three"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteY="81dp">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="19dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:onClick="goToScene2"
android:text="@string/one"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="19dp"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:onClick="goToScene1"
android:text="@string/two"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</android.support.constraint.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?>
<transitionManager xmlns:android="http://schemas.android.com/apk/res/android">
<changeBounds
android:duration="2000">
</changeBounds>
</transitionManager>
出于某种原因，我的 XML 是：
<?xml version="1.0" encoding="utf-8"?>
<transitionManager xmlns:android="http://schemas.android.com/apk/res/android">
<changeBounds
android:duration="2000">
</changeBounds>
</transitionManager>
并且应该是
<?xml version="1.0" encoding="utf-8"?>
<transitionSet xmlns:android="http://schemas.android.com/apk/res/android">
<changeBounds
android:duration="2000">
</changeBounds>
</transitionSet>
我不知道为什么当我创建文件时名称是 "transitionManager"，但更改为 "transitionSet" 是解决问题的原因。
我正在阅读 android studio 3.0 development essentials Kotlin edition 一书，但遇到了问题。
应用程序崩溃，在 logcat 里面显示 "Unknown scene name: transitionManager"
由于我是新手，所以我还不明白这样的简单错误，希望有人能帮我解决这个错误。
我正在按照书中的每一步进行检查，所以我猜这是书中的错误？或者这本书变旧了
package com.ebookfrenzy.scenetransitions
import android.os.Build
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.support.annotation.RequiresApi
import android.transition.Scene
import android.view.View
import android.transition.TransitionManager
import android.transition.TransitionInflater
import android.transition.Transition
import kotlinx.android.synthetic.main.activity_scene_transitions.*
class SceneTransitionsActivity : AppCompatActivity() {
var scene1: Scene? = null
var scene2: Scene? = null
var transitionMgr: Transition? = null
@RequiresApi(Build.VERSION_CODES.KITKAT)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_scene_transitions)
transitionMgr = TransitionInflater.from(this)
.inflateTransition(R.transition.transition)
scene1 = Scene.getSceneForLayout(rootContainer,
R.layout.scene1_layout, this)
scene2 = Scene.getSceneForLayout(rootContainer,
R.layout.scene2_layout, this)
scene1?.enter()
}
fun goToScene2(view: View) {
TransitionManager.go(scene2, transitionMgr)
}
fun goToScene1(view: View) {
TransitionManager.go(scene1, transitionMgr)
}
}
Logcat
08-14 14:18:25.920 30350-30350/com.ebookfrenzy.scenetransitions E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ebookfrenzy.scenetransitions, PID: 30350
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ebookfrenzy.scenetransitions/com.ebookfrenzy.scenetransitions.SceneTransitionsActivity}: java.lang.RuntimeException: Unknown scene name: transitionManager
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2957)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3032)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6940)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
Caused by: java.lang.RuntimeException: Unknown scene name: transitionManager
at android.transition.TransitionInflater.createTransitionFromXml(TransitionInflater.java:181)
at android.transition.TransitionInflater.inflateTransition(TransitionInflater.java:79)
at com.ebookfrenzy.scenetransitions.SceneTransitionsActivity.onCreate(SceneTransitionsActivity.kt:27)
at android.app.Activity.performCreate(Activity.java:7174)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1220)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2910)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3032)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6940)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
08-14 14:18:25.994 30350-30406/com.ebookfrenzy.scenetransitions I/vndksupport: sphal namespace is not configured for this process. Loading /vendor/lib64/egl/libGLESv2_adreno.so from the current namespace instead.
08-14 14:18:25.999 30350-30406/com.ebookfrenzy.scenetransitions D/libEGL: loaded /vendor/lib64/egl/libGLESv2_adreno.so
项目XML的
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
android:id="@+id/rootContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.ebookfrenzy.scenetransitions.SceneTransitionsActivity">
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:onClick="goToScene2"
android:text="@string/one"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="16dp"
android:onClick="goToScene1"
android:text="@string/two"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/three"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteY="81dp">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="19dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:onClick="goToScene2"
android:text="@string/one"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="19dp"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:onClick="goToScene1"
android:text="@string/two"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</android.support.constraint.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?>
<transitionManager xmlns:android="http://schemas.android.com/apk/res/android">
<changeBounds
android:duration="2000">
</changeBounds>
</transitionManager>
出于某种原因，我的 XML 是：
<?xml version="1.0" encoding="utf-8"?>
<transitionManager xmlns:android="http://schemas.android.com/apk/res/android">
<changeBounds
android:duration="2000">
</changeBounds>
</transitionManager>
并且应该是
<?xml version="1.0" encoding="utf-8"?>
<transitionSet xmlns:android="http://schemas.android.com/apk/res/android">
<changeBounds
android:duration="2000">
</changeBounds>
</transitionSet>
我不知道为什么当我创建文件时名称是 "transitionManager"，但更改为 "transitionSet" 是解决问题的原因。