Android Home键监听的实现代码

HomeListener.getInstance().start(this);

HomeListener.getInstance().stop(this);

HomeListener.getInstance().setHomeKeylistener(HomePressListener listener）；

HomeListener.getInstance().addHomeKeyListener(HomePressListener listener）

HomeListener.getInstance().removeHomeKeyListener(HomePressListener listener);

HomeListener.getInstance().removeAllHomeKeyListener();

HomeListener.getInstance().destroy();

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import java.util.ArrayList;import java.util.List;import java.util.concurrent.atomic.AtomicBoolean;public class HomeListener { public static HomeKeyListener getInstance() {  HomeKeyListener listener = HomeKeyListener.sListener;  listener.init();  return listener; } static class HomeKeyListener {  private static final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";//home键旁边的最近程序列表键  private static final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";//按下home键  private static final String SYSTEM_DIALOG_REASON_ASSIST = "assist";//某些三星手机的程序列表键  private static AtomicBoolean isDestroy = new AtomicBoolean(true);  private static AtomicBoolean isRegister = new AtomicBoolean(false);  private static HomeKeyListener sListener = new HomeKeyListener();  private List<HomePressListener> mPressListeners = new ArrayList<HomePressListener>();  private HomeReceiver mReceiver;  private IntentFilter mHomeFileter;  private HomePressListener mHomePressListener;  public void init() {   if (isDestroy.get()) {    this.mPressListeners = new ArrayList<HomePressListener>();    this.mReceiver = new HomeReceiver();    this.mHomeFileter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);    isDestroy.set(false);   }  }  public synchronized void start(Context context) {   if (!isRegister.get()) {    context.registerReceiver(mReceiver, mHomeFileter);    isRegister.set(true);   }  }  public synchronized void stop(Context context) {   if (isRegister.get()) {    context.unregisterReceiver(mReceiver);    isRegister.set(false);   }  }  public void setHomeKeylistener(HomePressListener listener) {   this.mHomePressListener = listener;  }  public void addHomeKeyListener(HomePressListener listener) {   mPressListeners.add(listener);  }  public void removeHomeKeyListener(HomePressListener listener) {   mPressListeners.add(listener);  }  public void removeAllHomeKeyListener() {   mPressListeners.clear();  }  public void destroy() {   this.mPressListeners.clear();   this.mPressListeners = null;   this.mReceiver = null;   this.mHomeFileter = null;   this.mHomePressListener = null;   isDestroy.set(true);  }  public interface HomePressListener {   void onHomePress();   void onHomeRecentAppsPress();  }  class HomeReceiver extends BroadcastReceiver {   @Override   public void onReceive(Context context, Intent intent) {    receive(intent);   }  }  private void receive(Intent intent) {   String action = intent.getAction();   if (action != null && action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {    String reason = intent.getStringExtra( "reason" );    dispatchPress(reason);   }  }  private void dispatchPress(String reason) {   switch (reason) {    case SYSTEM_DIALOG_REASON_HOME_KEY:     if (mHomePressListener != null) mHomePressListener.onHomePress();     for (HomePressListener listener : mPressListeners) listener.onHomePress();     break;    case SYSTEM_DIALOG_REASON_RECENT_APPS:    case SYSTEM_DIALOG_REASON_ASSIST:     if (mHomePressListener != null) mHomePressListener.onHomeRecentAppsPress();     for (HomePressListener listener : mPressListeners) listener.onHomeRecentAppsPress();     break;   }  } }}