ConditionVariable的用法 博客分类： Android AndroidUPOSthread

package chroya.fun;

import android.content.Context;
import android.os.ConditionVariable;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;

public class LongPressView3 extends View{
	private ConditionVariable cv = new ConditionVariable();
	private Thread longPressThread;
	private Runnable longPressRunnable;
	//是否释放
	private boolean isReleased;

	public LongPressView3(Context context) {
		super(context);
		longPressRunnable = new Runnable() {
			public void run() {
				//阻塞指定的时间
				cv.block(ViewConfiguration.getLongPressTimeout());
				if(!isReleased) {
					//还没up，则触发长按
					performLongClick();
				}
			}
		};
		createThread();
		post(null);		
	}
	
	private void createThread() {		
		longPressThread = new Thread(longPressRunnable);
	}

	@Override
	public boolean dispatchTouchEvent(MotionEvent event) {
		int action = event.getAction();
		switch(action) {
		case MotionEvent.ACTION_DOWN:
			isReleased = false;
			//重置为close状态
			cv.close();	
			createThread();
			longPressThread.start();
			break;
		case MotionEvent.ACTION_MOVE:
			break;			
		case MotionEvent.ACTION_UP:
			//up掉
			isReleased = true;
			//打开阻塞的线程
			cv.open();
			break;			
		}
		return true;
	}	
}