Android 4.4 PhoneWindowManager如何给自定义按键添加长按功能

代码路径：
frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
在PhoneWindowManager.java文件中添加长按和抬起功能

volatile boolean mRecordOkKeyHandled;
	private void interceptRecordOkLongKeyDown(boolean handled){
		  mRecordOkKeyHandled = handled;
		    if (!handled) {
				mHandler.postDelayed(mRecordOkLongPress, LONG_PRESS_POWR_DELAY_MILLIS);
        }
	}

	private void interceptRecordOkLongKeyUp(){
		  if (!mRecordOkKeyHandled) {
            mHandler.removeCallbacks(mRecordOkLongPress);
        }
	}
	  private final Runnable mRecordOkLongPress = new Runnable() {
        @Override
        public void run() {
			mRecordOkKeyHandled = true;
           //这里通过广播发送出去做一些功能实现
        }
    };
	 private void sendBroadCast(String action,String type) {
        Intent intent = new Intent();
        intent.setAction(action);
        intent.putExtra("Type", type);
        mContext.sendBroadcast(intent);
    }