Android的screenOrientation设立_Android

Android的screenOrientation设置

首先在AndroidManifest.xml中，对需要设置的Activity加上如下两条属性：

Java代码??
android:configChanges="orientation|keyboard"?（转屏时不重置Activity，??
置了此项，则无法为横向和纵向分别设置不同的布局。因为转屏时不会删除并重新加载）??
?android:screenOrientation="sensor"?（开启重力传感器）???

?转屏函数：

Java代码??
import?android.content.pm.ActivityInfo;??
??
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);???
//强制指定纵向?value为5??
??
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);???
//强制指定反方向纵向?value为9??

?重力传感器监测：

Java代码??
import?android.app.Activity;??
import?android.content.Context;??
import?android.hardware.Sensor;??
import?android.hardware.SensorEvent;??
import?android.hardware.SensorEventListener;??
import?android.hardware.SensorManager;??
import?android.os.Bundle;??
??
public?class?asd?extends?Activity{??
????SensorManager?mManager;??
????Sensor?mSensor;??
????SensorEventListener?mListener;??
????@Override??
????protected?void?onCreate(Bundle?savedInstanceState)?{??
????????super.onCreate(savedInstanceState);??
??????????
????????setRequestedOrientation(5);//初始化屏幕方向??
???????????mManager?=?(SensorManager)?getSystemService(Context.SENSOR_SERVICE);???
???????????mSensor?=?mManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);???
???????????mListener?=?new?SensorEventListener()?{???
????????????public?void?onAccuracyChanged(Sensor?sensor,?int?accuracy)?{???
??????????????};??
????????????public?void?onSensorChanged(SensorEvent?event)?{???
?????????????float?x?=?event.values[SensorManager.DATA_X];???
?????????????float?y?=?event.values[SensorManager.DATA_Y];???
?????????????float?z?=?event.values[SensorManager.DATA_Z];???
?????????????setCustomOrientation(x,?y,?z);???
????????????};???
???????????};???
???????????mManager.registerListener(mListener,?mSensor,?SensorManager.SENSOR_DELAY_GAME);??
????}??
??????
????public?void?setCustomOrientation(float?x,?float?y,?float?z)?{???
???????????
?????????if(y?>?1.5)??
?????????{??
??????????//setRequestedOrientation(??
??????????//????ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT);??
???????????setRequestedOrientation(5);??
?????????}??
?????????else?if(y?<?-1.5)??
?????????{??
?????????????setRequestedOrientation(9);??
?????????}??
????????};??
????????@Override????
????????protected?void?onResume()?{?????
????????????super.onResume();???
?????????mManager.registerListener(mListener,?mSensor,???
????????SensorManager.SENSOR_DELAY_GAME);???
????????};??
??
????????@Override????
????????protected?void?onPause()?{?????
????????????super.onPause();???
?????????mManager.unregisterListener(mListener);???
????????};??
}??

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