动态更改 Android 的屏幕方向

核心提示：private Button bt;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);//bt = (Button)find

private Button bt;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//

bt = (Button)findViewById(R.id.bt_push);

bt.setOnClickListener(new Button.OnClickListener(){

@Override

public void onClick(View v) {

if (getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

}

else if(getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT)

{

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

}

}

});

}

}

Step 4：在AndroidManifest.xml文件里设置默认方向，不然程序不能正常工作哦.

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"  package="com.chgandroidorientation" android:versionCode="1"  android:versionName="1.0">  <application android:icon="@drawable/icon" android:label="@string/app_name"> 　<activity android:name=".ChgAndroidOrientation" 　 android:label="@string/app_name" 　 android:screenOrientation="portrait"> 　 <intent-filter> 　　<action android:name="android.intent.action.MAIN" /> 　　<category android:name="android.intent.category.LAUNCHER" /> 　 </intent-filter> 　</activity>  </application>  <uses-sdk android:minSdkVersion="7" /> </manifest>