Android横竖屏幕切换小结

2024-03-21 18:50:02 24

Android手机或平板都会存在横竖屏切换的功能，通常是由物理重力感应触发的，但是有时候也不尽然，通常在设置里面我们可以对手机的横竖屏切换进行关闭。

AndroidManifest.xml

<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
android:theme="@android:style/Theme.Translucent"/>
<?xmlversion="1.0"encoding="utf-8"?>
<manifestxmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.yanlei.yl7">
<!--IncluderequiredpermissionsforGoogleMobileAdstorun.-->
<uses-permissionandroid:name="android.permission.INTERNET"/>
<uses-permissionandroid:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permissionandroid:name="android.permission.CHANGE_CONFIGURATION"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<!--Thismeta-datatagisrequiredtouseGooglePlayServices.-->
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version"/>
<activity
android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<actionandroid:name="android.intent.action.MAIN"/>
<categoryandroid:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity><!--IncludetheAdActivityconfigChangesandtheme.-->
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
android:theme="@android:style/Theme.Translucent"/>
</application>
</manifest>

activity_main.xml

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
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:text="获取Configuration信息"
android:textSize="25sp"
android:layout_marginTop="80dip"
android:layout_centerHorizontal="true"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="测试ConfigurationChange"
android:textSize="25sp"
android:layout_centerInParent="true"
android:id="@+id/mytext"/>
</RelativeLayout>

MainActivity.java

packagecom.example.yanlei.yl7;
importandroid.content.res.Configuration;
importandroid.os.Bundle;
importandroid.support.v7.app.AppCompatActivity;
importandroid.view.Menu;
importandroid.view.MenuItem;
importandroid.view.View;
importandroid.view.View.OnClickListener;
importandroid.widget.Button;
importandroid.widget.TextView;
importandroid.widget.Toast;
publicclassMainActivityextendsAppCompatActivity{
privateButtonmButton;
privateTextViewpTextView;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pTextView=(TextView)this.findViewById(R.id.mytext);
System.out.println("--->onCreate()");
init();
}
privatevoidinit(){
mButton=(Button)findViewById(R.id.button);
mButton.setOnClickListener(newClickListenerImpl());
}
privateclassClickListenerImplimplementsOnClickListener{
@Override
publicvoidonClick(Viewv){
getConfigurationInfo();
}
}
privatevoidgetConfigurationInfo(){
Configurationconfiguration=getResources().getConfiguration();
//获取屏幕方向
intl=configuration.ORIENTATION_LANDSCAPE;
intp=configuration.ORIENTATION_PORTRAIT;
if(configuration.orientation==l){
pTextView.setText("现在是横屏====");
System.out.println("现在是横屏");
}
if(configuration.orientation==p){
pTextView.setText("现在是竖屏===");
System.out.println("现在是竖屏");
}
}
@Override
publicvoidonConfigurationChanged(ConfigurationnewConfig){
super.onConfigurationChanged(newConfig);
//newConfig.orientation获得当前屏幕状态是横向或者竖向
//Configuration.ORIENTATION_PORTRAIT表示竖向
//Configuration.ORIENTATION_LANDSCAPE表示横屏
if(newConfig.orientation==Configuration.ORIENTATION_PORTRAIT){
pTextView.setText("现在是竖屏");
Toast.makeText(MainActivity.this,"现在是竖屏",Toast.LENGTH_SHORT).show();
}
if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){
pTextView.setText("现在是横屏");
Toast.makeText(MainActivity.this,"现在是横屏",Toast.LENGTH_SHORT).show();
}
}

@Override
protectedvoidonSaveInstanceState(BundleoutState){
super.onSaveInstanceState(outState);
outState.putString("name","zxx");
outState.putInt("id",9527);
System.out.println("--->onSaveInstanceState()");
}
@Override
protectedvoidonRestoreInstanceState(BundlesavedInstanceState){
super.onRestoreInstanceState(savedInstanceState);
Stringname=savedInstanceState.getString("name");
intid=savedInstanceState.getInt("id");
System.out.println("--->onRestoreInstanceState()");
System.out.println("名字="+name+",编号="+id);

}
@Override
publicbooleanonCreateOptionsMenu(Menumenu){
//Inflatethemenu;thisaddsitemstotheactionbarifitispresent.
getMenuInflater().inflate(R.menu.menu_main,menu);
returntrue;
}
@Override
publicbooleanonOptionsItemSelected(MenuItemitem){
//Handleactionbaritemclickshere.Theactionbarwill
//automaticallyhandleclicksontheHome/Upbutton,solong
//asyouspecifyaparentactivityinAndroidManifest.xml.
intid=item.getItemId();
if(id==R.id.action_settings){
returntrue;
}
returnsuper.onOptionsItemSelected(item);
}
}

以上内容给大家介绍了Android横竖屏切换小结的相关知识，希望对大家有所帮助！

Android横竖屏幕切换小结

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