ANDROID 返回，菜單和HOME鍵的監聽

，返回和菜單鍵是可以直接重寫onKeyDown(int keyCode, KeyEvent event) 方法監聽：

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) { // 監控/攔截/屏蔽返回鍵
//do something
} else if (keyCode == KeyEvent.KEYCODE_MENU) {

//do something
} else if (keyCode == KeyEvent.KEYCODE_HOME) {

//這裡操作是沒有返回結果的
}
return super.onKeyDown(keyCode, event);
}

在do something 中，如果返回false則時間不繼續傳遞，也就是不會觸發相應的後續事件

2，如果是Home事件，看網上的說法，是底層攔截了這個事件，但是攔截後會發出一個廣播。所以注冊個廣播接收HOME按鍵事件就行了。

/**
 * Home鍵監聽封裝
 *
 *
 */
public class HomeListener {
 
    static final String TAG = "HomeListener";
    private Context mContext;
    private IntentFilter mFilter;
    private OnHomePressedListener mListener;
    private InnerRecevier mRecevier;
 
    // 回調接口 
    public interface OnHomePressedListener {
        public void onHomePressed();
 
        public void onHomeLongPressed();
    }
 
    public HomeListener(Context context) {
        mContext = context;
        mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
    }
 
    /**
     * 設置監聽
     *
     * @param listener
     */
    public void setOnHomePressedListener(OnHomePressedListener listener) {
        mListener = listener;
        mRecevier = new InnerRecevier();
    }
 
    /**
     * 開始監聽，注冊廣播
     */
    public void startWatch() {
        if (mRecevier != null) {
            mContext.registerReceiver(mRecevier, mFilter);
        }
    }
 
    /**
     * 停止監聽，注銷廣播
     */
    public void stopWatch() {
        if (mRecevier != null) {
            mContext.unregisterReceiver(mRecevier);
        }
    }
 
    /**
     * 廣播接收者
     */
    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)) {
                            // 短按home鍵 
                            mListener.onHomePressed();
                        } else if (reason
                                .equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) {
                            // 長按home鍵 
                            mListener.onHomeLongPressed();
                        }
                    }
                }
            }
        }
    }
}

在使用的時候：

private HomeListener mHomeWatcher;

在oncreate()中：

mHomeWatcher = new HomeListener(this);
        mHomeWatcher.setOnHomePressedListener(new OnHomePressedListener() {
            @Override
            public void onHomePressed() {
            if(null!=vibrator){
    vibrator.cancel();
    }
    if(null!=timer){
    timer.cancel();
    }
            }
            @Override
            public void onHomeLongPressed() {
            if(null!=vibrator){
    vibrator.cancel();
    }
    if(null!=timer){
    timer.cancel();
    }
            }
        });
        mHomeWatcher.startWatch();

在onpause（）方法中：

mHomeWatcher.stopWatch();