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：

   android:configChanges="orientation|keyboard" （转屏时不重置Activity，若设置了此项，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：

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

重力传感器监测：

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;@Overrideprotected 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); };}

更多相关文章

随机推荐