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½ÓÏÂÀ´ÐÞ¸ÄÒôÀÖ²¥·ÅµÄÖ÷ÀࣺMediaPlaybackActivity.java

Ê×ÏÈÒªÌí¼Ó±äÁ¿£ºprivate ImageButton mShakeButton;

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    mShakeButton = ((ImageButton) findViewById(R.id.shake));    mShakeButton.setOnClickListener(mShakeListener); 

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    mShakeButton = ((ImageButton) findViewById(R.id.shake));    mShakeButton.setOnClickListener(mShakeListener); 
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    private View.OnClickListener mShakeListener = new View.OnClickListener() {        public void onClick(View v) {            shakeEnable();        }    };

дshakeEnable()º¯ÊýµÄº¯ÊýÌ壻
    private void shakeEnable(){if (mService == null) {return;}try {if (mService.getShakeFlag()== false){mService.setShakeFlag(true);showToast(R.string.shake_on_notif);}else{mService.setShakeFlag(false);showToast(R.string.shake_off_notif);}setShakeButtonImage();}catch (RemoteException ex) {        }    }
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   private void setShakeButtonImage() {        if (mService == null) return;          try {if  (mService.getShakeFlag() == false) {mShakeButton.setImageResource(R.drawable.ic_mp_shake_off_btn);}else{mShakeButton.setImageResource(R.drawable.ic_mp_shake_on_btn);}   }catch (RemoteException ex) {        }    }

MediaPlaybackActivity.javaÕâ¸öÎļþÐ޸ĺÃÁË£»

½ÓÏÂÀ´¿´¿´MediaPlaybackService.java
ÏÈimport  onShakeListener
import com.android.music.ShakeDetector.onShakeListener;

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private boolean mShakeFlag = false;
ShakeDetector mShakeDetector = null;
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  mShakeFlag = mPreferences.getBoolean("shakeflag", false);  setShakeOnorOff();

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   if (mShakeDetector != null) {mShakeDetector.unRegisterListener();   }
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    private void setShakeOnorOff(){ if (mShakeFlag == true){         mShakeDetector= new ShakeDetector(this); mShakeDetector.registerListener(); mShakeDetector.setOnShakeListener(new onShakeListener() { @Override public void onShake() { // TODO Auto-generated method stub if (isPlaying()){      gotoNext(true); } } }); }else{if (mShakeDetector != null) {mShakeDetector.unRegisterListener();} }Editor ed = mPreferences.edit();ed.putBoolean("shakeflag", mShakeFlag);SharedPreferencesCompat.apply(ed); }    public void setShakeFlag(boolean shakeflag) {        synchronized (this) {            mShakeFlag = shakeflag;            setShakeOnorOff();        }    }    public boolean getShakeFlag() {        return mShakeFlag;    }

ÔÚIMediaPlaybackService.StubÖÐÉèÖÃÊÇ·ñ´ò¿ªÒ¡Ò¡¹¦ÄÜ
      public void setShakeFlag(boolean shakeflag) {    mService.get().setShakeFlag(shakeflag);          }        public boolean getShakeFlag() {            return mService.get().getShakeFlag();        }

½ÓÏÂÀ´¾ÍÊÇÔÚIMediaPlaybackService.aidlÎļþÖÐÌí¼Ó¶ÔÓ¦µÄº¯Êý£»
   void setShakeFlag(boolean shakeflag);    boolean getShakeFlag();

×îºó¾ÍÊÇÌí¼ÓÒ»¸öÎļþShakeDetector.java
package com.android.music; import android.content.Context;import android.hardware.Sensor;import android.hardware.SensorEvent;import android.hardware.SensorEventListener;import android.hardware.SensorManager;import android.util.Log;public class ShakeDetector implements SensorEventListener {private static final String TAG = "ShakeDetector";private Context mContext;private long lastTime;        private float last_x;private float last_y;private float last_z;private static final double SHAKE_SHRESHOLD = 3000d;//Õâ¸öÖµ¿É¸ù¾ÝsensorµÄÁéÃô¶ÈÀ´µ÷Õû        private Sensor sensor;private SensorManager sensorManager;public onShakeListener shakeListener;public ShakeDetector(Context context) {mContext = context;sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);}       public boolean registerListener() {if (sensorManager != null) {sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);if (sensor != null) {this.sensorManager.registerListener(this, sensor,SensorManager.SENSOR_DELAY_GAME);return true;}}return false;}public void unRegisterListener() {System.out.println("ShakeDetector:unRegisterListener");if (sensorManager != null  && sensor != null)sensorManager.unregisterListener(this , sensor);}public void setOnShakeListener(onShakeListener listener) {shakeListener = listener;}@Overridepublic void onAccuracyChanged(Sensor sensor, int accuracy) {// TODO Auto-generated method stub}@Overridepublic void onSensorChanged(SensorEvent event) {// TODO Auto-generated method stublong curTime = java.lang.System.currentTimeMillis();if ((curTime - lastTime) > 50) {long diffTime = (curTime - lastTime);lastTime = curTime;float x = event.values[0];float y = event.values[1];float z = event.values[2];                                float speed = Math.abs(x + y + z - last_x - last_y - last_z)/ diffTime * 10000;System.out.println("ShakeDetector:onSensorChanged speed ="+speed);if (speed > SHAKE_SHRESHOLD) {shakeListener.onShake();}last_x = x;last_y = y;last_z = z;}}       public interface onShakeListener {public void onShake();}}

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