Android应用程序在更改为横向时崩溃

Question

我正在开发页面上开发一个带有TextView和ImageView的简单Android应用程序。当我将手机旋转到横向模式时，应用程序崩溃。虽然我看到该应用没有被杀死，但它只是消失，我可以看到它仍然在Android Studio中运行。 以下是我的代码：

Content_main.xml -landscape模式

<?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:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    app:layout_behavior="@string/appbar_scrolling_view_behavior" 
    tools:context="com.example.viral.myapplication2.MainActivity" 
    tools:showIn="@layout/activity_main"> 
    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Hello World!" 
     android:id="@+id/textView2" /> 
    <TextView 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="@string/ganpati_bappa_moraya" 
     android:id="@+id/textView" 
     tools:context=".Blink" 
     android:textAlignment="center" 
     android:textSize="@dimen/abc_action_button_min_width_overflow_material" 
     android:layout_alignRight="@+id/imageView" 
     android:layout_alignEnd="@+id/imageView" 
     android:layout_alignLeft="@+id/imageView" 
     android:layout_alignStart="@+id/imageView" /> 
    <ImageView 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:id="@+id/imageView" 
     android:layout_centerHorizontal="true" 
     android:src="@mipmap/god_pic" 
     android:layout_below="@+id/textView" /> 
</RelativeLayout> 

Content_main.xml - 正常模式 - 人像

<?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:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    app:layout_behavior="@string/appbar_scrolling_view_behavior" 
    tools:context="com.example.viral.myapplication2.MainActivity" 
    tools:showIn="@layout/activity_main"> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Hello World!" 
     android:id="@+id/textView2" /> 

    <TextView 
     android:layout_width="400dp" 
     android:layout_height="100dp" 
     android:text="Ganpati Bappa Moraya !!!" 
     android:id="@+id/textView" 
     android:layout_below="@+id/textView2" 
     android:layout_centerHorizontal="true" 
     tools:context=".Blink" 
     android:layout_marginTop="84dp" 
     android:textAlignment="center" 
     android:textSize="@dimen/abc_action_button_min_width_overflow_material" /> 

    <ImageView 
     android:layout_width="500dp" 
     android:layout_height="200dp" 
     android:id="@+id/imageView" 
     android:layout_below="@+id/textView" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="10dp" 
     android:src="@mipmap/god_pic" /> 
</RelativeLayout> 

Android_Manifest.xml文件

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.viral.myapplication2"> 

    <application 
     android:allowBackup="true" 
     android:icon="@mipmap/god_pic" 
     android:label="@string/app_name" 
     android:supportsRtl="true" 
     android:theme="@style/AppTheme"> 
     <activity 
      android:name=".MainActivity" 
      android:label="@string/app_name" 
      android:configChanges="keyboardHidden|orientation" 
      android:theme="@style/AppTheme.NoActionBar"> 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
    </application> 

</manifest> 

Answer 1

修改AndroidManifest.xml文件到这个

android:configChanges="keyboardHidden|orientation|screenSize". 

screenSize财产约需屏幕方向的变化和活动的生命周期照顾不会再打电话。