android 获取当前屏幕方向
直接上源码:
package com.z.currorientation;
import android.content.Context;
import android.hardware.SensorManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.OrientationEventListener;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private final String TAG = MainActivity.class.getSimpleName();
private CameraOrientationListener orientationListener;
private TextView txt;
/**
* 当前屏幕旋转角度
*/
private int mOrientation = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txt = (TextView) findViewById(R.id.txt);
orientationListener = new CameraOrientationListener(this);
orientationListener.enable();
startOrientationChangeListener();
}
/**
* 启动屏幕朝向改变监听函数 用于在屏幕横竖屏切换时改变保存的图片的方向
*/
private void startOrientationChangeListener() {
OrientationEventListener mOrEventListener = new OrientationEventListener(this) {
@Override
public void onOrientationChanged(int rotation) {
Log.i(TAG, "当前屏幕手持角度方法:" + rotation + "°");
if (((rotation >= 0) && (rotation <= 45)) || (rotation > 315)) {
rotation = 0;
} else if ((rotation > 45) && (rotation <= 135)) {
rotation = 90;
} else if ((rotation > 135) && (rotation <= 225)) {
rotation = 180;
} else if ((rotation > 225) && (rotation <= 315)) {
rotation = 270;
} else {
rotation = 0;
}
if (rotation == mOrientation)
return;
mOrientation = rotation;
}
};
mOrEventListener.enable();
}
/**
* 当方向改变时，将调用侦听器onOrientationChanged(int)
*/
private class CameraOrientationListener extends OrientationEventListener {
private int mCurrentNormalizedOrientation;
private int mRememberedNormalOrientation;
public CameraOrientationListener(Context context) {
super(context, SensorManager.SENSOR_DELAY_NORMAL);
}
@Override
public void onOrientationChanged(final int orientation) {
Log.i(TAG, "当前屏幕手持角度:" + orientation + "°");
if (orientation != ORIENTATION_UNKNOWN) {
mCurrentNormalizedOrientation = normalize(orientation);
}
runOnUiThread(new Runnable() {
@Override
public void run() {
String str = "当前屏幕手持角度:" + orientation + "°\n当前屏幕手持方向:" + mCurrentNormalizedOrientation;
txt.setText(str);
}
});
}
private int normalize(int degrees) {
if (degrees > 315 || degrees <= 45) {
return 0;
}
if (degrees > 45 && degrees <= 135) {
return 90;
}
if (degrees > 135 && degrees <= 225) {
return 180;
}
if (degrees > 225 && degrees <= 315) {
return 270;
}
throw new RuntimeException("The physics as we know them are no more. Watch out for anomalies.");
}
/**
* 记录方向
*/
public void rememberOrientation() {
mRememberedNormalOrientation = mCurrentNormalizedOrientation;
}
/**
* 获取当前方向
*
* @return
*/
public int getRememberedNormalOrientation() {
return mRememberedNormalOrientation;
}
}
}
10-16 16:20:11.256 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:355°
10-16 16:20:11.257 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:355°
10-16 16:20:12.318 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:356°
10-16 16:20:12.319 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:356°
10-16 16:20:12.506 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:355°
10-16 16:20:12.506 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:355°
10-16 16:20:12.881 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:356°
10-16 16:20:12.881 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:356°
10-16 16:20:14.131 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:355°
10-16 16:20:14.131 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:355°
10-16 16:20:14.319 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:356°
10-16 16:20:14.319 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:356°
10-16 16:20:29.194 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:359°
10-16 16:20:29.194 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:359°
10-16 16:20:29.381 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:355°
10-16 16:20:29.381 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:355°
10-16 16:20:29.631 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:359°
10-16 16:20:29.631 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:359°
10-16 16:20:29.818 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:357°
10-16 16:20:29.819 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:357°
10-16 16:20:31.006 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:356°
10-16 16:20:31.006 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:356°
10-16 16:20:31.193 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:357°
10-16 16:20:31.193 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:357°
10-16 16:20:31.444 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:359°
10-16 16:20:31.444 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:359°
10-16 16:20:31.631 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:339°
10-16 16:20:31.631 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:339°
10-16 16:20:31.818 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:312°
10-16 16:20:31.818 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:312°
10-16 16:20:32.006 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:311°
10-16 16:20:32.006 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:311°
10-16 16:20:32.256 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:313°
10-16 16:20:32.256 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:313°
10-16 16:20:32.444 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:314°
10-16 16:20:32.444 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:314°
10-16 16:20:32.631 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:327°
10-16 16:20:32.631 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:327°
10-16 16:20:32.818 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:6°
10-16 16:20:32.819 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:6°
10-16 16:20:33.069 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:1°
10-16 16:20:33.069 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:1°
10-16 16:20:33.256 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:352°
10-16 16:20:33.256 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:352°
10-16 16:20:33.444 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:358°
10-16 16:20:33.444 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:358°
10-16 16:20:33.631 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:15°
10-16 16:20:33.631 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:15°
10-16 16:20:33.819 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度方法:-1°
10-16 16:20:33.819 14881-14881/com.z.currorientation I/MainActivity: 当前屏幕手持角度:-1°一般用于自定义相机的时候...