使用此代码：
HomeWatcher mHomeWatcher = new HomeWatcher(this);mHomeWatcher.setonHomePressedListener(new onHomePressedListener() { @Override public void onHomePressed() { // do something here... } @Override public void onHomeLongPressed() { }});mHomeWatcher.startWatch();HomeWatcher：
import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.util.Log;public class HomeWatcher { static final String TAG = "hg"; private Context mContext; private IntentFilter mFilter; private onHomePressedListener mListener; private InnerRecevier mRecevier; public HomeWatcher(Context context) { mContext = context; mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS); } public void setonHomePressedListener(onHomePressedListener listener) { mListener = listener; mRecevier = new InnerRecevier(); } public void startWatch() { if (mRecevier != null) { mContext.registerReceiver(mRecevier, mFilter); } } public void stopWatch() { if (mRecevier != null) { mContext.unregisterReceiver(mRecevier); } } class InnerRecevier extends BroadcastReceiver { final String SYSTEM_DIALOG_REASON_KEY = "reason"; final String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS = "globalactions"; final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps"; final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey"; @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) { String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY); if (reason != null) { Log.e(TAG, "action:" + action + ",reason:" + reason); if (mListener != null) { if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) { mListener.onHomePressed(); } else if (reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) { mListener.onHomeLongPressed(); } } } } } }}OnHomePressedListener：
public interface onHomePressedListener { public void onHomePressed(); public void onHomeLongPressed();}
