Android 自定义双击和单击事件 支持时间间隔

背景：

随着移动端的快速发展，实体按键已基本被触摸屏所取代，使用者和手机的信息交流，依赖于屏幕。屏幕不仅作为一个显示器，同样兼顾着输入设备，拥有输入输出两种功能，雌雄同体。

功能：点击，是屏幕使用最多的时候，系统提供的单击监听

public void setOnClickListener(@Nullable OnClickListener l) ，

如果需要双击，就需要通过手势监听来实现:GestureDetector

GestureDetector gestureDetector = new GestureDetector(mContext, new GestureDetector.SimpleOnGestureListener() {@Overridepublic boolean onDoubleTap(MotionEvent e) {//双击clickEvent(e, true);return super.onDoubleTap(e);}@Overridepublic boolean onSingleTapConfirmed(MotionEvent e) {//单击clickEvent(e, false);return super.onSingleTapConfirmed(e);}@Overridepublic boolean onSingleTapUp(MotionEvent e) {return super.onSingleTapUp(e);}@Overridepublic void onLongPress(MotionEvent e) {super.onLongPress(e);}@Overridepublic boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {return super.onScroll(e1, e2, distanceX, distanceY);}@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {return super.onFling(e1, e2, velocityX, velocityY);}@Overridepublic void onShowPress(MotionEvent e) {super.onShowPress(e);}@Overridepublic boolean onDown(MotionEvent e) {return super.onDown(e);}@Overridepublic boolean onDoubleTapEvent(MotionEvent e) {return super.onDoubleTapEvent(e);}@Overridepublic boolean onContextClick(MotionEvent e) {return super.onContextClick(e);}});

view.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {return gestureDetector.onTouchEvent(event);}});

//常见的两种回调

GestureDetector.SimpleOnGestureListener：//简单的监听，已实现双击监听回调

GestureDetector.OnDoubleTapListener://双击监听

这是常见的手势监听，来完成。

但是这种监听是不支持时间订制，也就是双击间距和单击回调的时间机制，导致满足不了一些订制要求

解决方案：

我们可以通过模拟点击，来完成双击和单击，点击最核心是手势按下屏幕和离开，至于在屏幕上滑动MOVING，这些可以忽略，ACTION_DOWN到ACTION_UP的时间差，

接下来我们通过代码来完成模拟

/*** @author :woniu * @date:/4/27-17:56* @wiki:* @projectName:MyApplication* @FileName:ViewTouchManager* @descp:*/public class ViewTouchManager {private static volatile ViewTouchManager manager;private long mClickTime = 0;private boolean clickEnable = false;private boolean doubleClickEnable = false;private long doubleClickTime = 0;private boolean moving = false;private long lasTime = 0;private int clickCount = 0;private final int MSG_CLICK = 0x101;//点击消息private final int MSG_DOUBLE = 0x102;//双极性消息private MyHandler myHandler;private SimpleOnClickListener simpleOnClickListener;private MotionEvent motionEvent;private boolean doubleClick = false;public static ViewTouchManager getInstance() {if (manager == null)manager = new ViewTouchManager();return manager;}public ViewTouchManager setClickTime(boolean clickEnable, long clickTime) {this.clickEnable = clickEnable;this.mClickTime = clickTime;return this;}public ViewTouchManager setOnDoubleClickTime(boolean clickEnable, long clicktime) {this.doubleClickEnable = clickEnable;this.doubleClickTime = clicktime;return this;}public ViewTouchManager addClickListener(View view, SimpleOnClickListener simpleOnClickListener) {this.simpleOnClickListener = simpleOnClickListener;if (view == null)return this;if (myHandler == null) {myHandler = new MyHandler();}view.setOnTouchListener(new View.OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {motionEvent = event;switch (event.getAction()) {case MotionEvent.ACTION_DOWN:moving = false;lasTime = System.currentTimeMillis();break;case MotionEvent.ACTION_CANCEL: {}break;case MotionEvent.ACTION_UP: {long newTime = System.currentTimeMillis();if (!moving) {moving = false;doubleClick = false;long clicKTime = newTime - lasTime;//双击if (clicKTime < doubleClickTime && doubleClickEnable) {clickCount++;if (clickCount == 2) {//双击doubleClick = true;clickCount = 0;if (doubleClickEnable && simpleOnClickListener != null) {simpleOnClickListener.onDoubleClick(event);}}}if (clicKTime < mClickTime) {myHandler.sendEmptyMessageDelayed(MSG_CLICK, doubleClickEnable ? doubleClickTime : mClickTime);}lasTime = newTime;}}break;case MotionEvent.ACTION_MOVE: {// moving = true;}break;}return true;}});return this;}public interface SimpleOnClickListener {public void onDoubleClick(MotionEvent event);public void onClick(MotionEvent event);}private class MyHandler extends Handler {@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);switch (msg.what) {case MSG_CLICK: {if (!doubleClick && clickCount != 2) {//单击行为clickCount = 0;if (clickEnable && simpleOnClickListener != null) {simpleOnClickListener.onClick(motionEvent);}} else if (!doubleClickEnable && clickEnable) {if (clickEnable && simpleOnClickListener != null) {simpleOnClickListener.onClick(motionEvent);}}}break;}}}}

目前该工具类支持：单击事件，双击事件，也支持但双击事件的时间订制，如果你需要哪个，只需开启即可。