在我的应用程序中，我希望发生两件事。
当我触摸并拖动 ImageButton 时，它应该会随着我的手指移动。
我为此使用了OnTouchListener()，它工作正常。
当我单击 ImageButton 时，它应该关闭活动。
我为此使用了OnClickListener()，它也可以正常工作。
所以，这是我的问题。每当我移动ImageButton OnTouchListener 和ImageButton 移动时，OnClickListener 也会在我释放按钮移动时触发。
如何在同一个按钮上使用 ontouch 和 onclick 监听器而不互相干扰？
【问题讨论】：
标签： android
点击监听事件；如果您的组件范围内的 actiondown 和 action up 比调用 onclicklistener。因此，onclick 事件通过触摸检测激活。如果您的组件开始位置上的动作向上和向下动作，您只能设置 onTouchListener 并接收点击事件。
【讨论】：
声明一个私有变量，例如：boolean hasMoved = false;
当图片按钮开始移动时，设置hasMoved = true
在您的OnClickListener 中仅执行代码if(!hasMoved) - 表示仅在按钮未移动时执行点击功能。之后设置hasMoved = false;
【讨论】：
也许您可以使用布尔值。
让我们说 布尔 isMoving = false;
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_MOVE:
isMoving = true;
// implement your move codes
break;
case MotionEvent.ACTION_UP:
isMoving = false;
break;
default:
break;
}
然后在您的 onclick 方法中检查布尔值。如果为假，则执行点击动作，如果为真...不动作。
public void onClick(View arg0) {
switch (arg0.getId()) {
case R.id.imagebutton:
if(!isMoving) {
//code for on click here
}
default:
break;
}
}
【讨论】：
当您的 OnTouchListener 被触发时，只需使用一个布尔字段并将其设置为真值。之后，当 OnClickListener 想要触发时，您将检查布尔字段，如果为 true，则不要在您的 onClickListener 中执行任何操作。
private blnTouch = false;
private OnTouchListener btnOnTouchListener = new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
if (event.getAction()==MotionEvent.ACTION_DOWN){
blnOnTouch = true;
}
if (event.getAction()==MotionEvent.ACTION_UP){
blnOnTouch = false;
}
}
};
private OnClickListener btnOnClickListener = new OnClickListener() {
@Override
public void onClick(View arg0) {
if (blnOnTouch){
// Do Your OnClickJob Here without touch and move
}
}
};
【讨论】：
试试这个，可能对你有帮助
无需设置onClick() 方法onTouch() 将处理这两种情况。
package com.example.demo;
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.ImageButton;
public class MainActivity extends Activity {
private GestureDetector gestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gestureDetector = new GestureDetector(this, new SingleTapConfirm());
ImageButton imageButton = (ImageButton) findViewById(R.id.img);
imageButton.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
if (gestureDetector.onTouchEvent(arg1)) {
// single tap
return true;
} else {
// your code for move and drag
}
return false;
}
});
}
private class SingleTapConfirm extends SimpleOnGestureListener {
@Override
public boolean onSingleTapUp(MotionEvent event) {
return true;
}
}
}
【讨论】：
onDown 方法返回true，触摸甚至触发onDown，然后触摸和单击没有区别。你能指导我吗？
onClick 和 OnTouch 事件的问题在于，当您单击（意图单击）时，它假定事件为 OnTouch，因此永远不会解释 OnClick。解决方法
isMove = false;
case MotionEvent.ACTION_DOWN:
//Your stuff
isMove = false;
case MotionEvent.ACTION_UP:
if (!isMove || (Xdiff < 10 && Ydiff < 10 ) {
view.performClick; //The check for Xdiff <10 && YDiff< 10 because sometime elements moves a little
even when you just click it
}
case MotionEvent.ACTION_MOVE:
isMove = true;
【讨论】：
MotionEvent.ACTION_MOVE中设置isMove = true，只有当差值大于10时
要在单个View 上拥有Click Listener、DoubleClick Listener、OnLongPress Listener、Swipe Left、Swipe Right、Swipe Up、Swipe Down，您需要setOnTouchListener。即，
view.setOnTouchListener(new OnSwipeTouchListener(MainActivity.this) {
@Override
public void onClick() {
super.onClick();
// your on click here
}
@Override
public void onDoubleClick() {
super.onDoubleClick();
// your on onDoubleClick here
}
@Override
public void onLongClick() {
super.onLongClick();
// your on onLongClick here
}
@Override
public void onSwipeUp() {
super.onSwipeUp();
// your swipe up here
}
@Override
public void onSwipeDown() {
super.onSwipeDown();
// your swipe down here.
}
@Override
public void onSwipeLeft() {
super.onSwipeLeft();
// your swipe left here.
}
@Override
public void onSwipeRight() {
super.onSwipeRight();
// your swipe right here.
}
});
}
为此，您需要实现OnTouchListener 的OnSwipeTouchListener 类。
public class OnSwipeTouchListener implements View.OnTouchListener {
private GestureDetector gestureDetector;
public OnSwipeTouchListener(Context c) {
gestureDetector = new GestureDetector(c, new GestureListener());
}
public boolean onTouch(final View view, final MotionEvent motionEvent) {
return gestureDetector.onTouchEvent(motionEvent);
}
private final class GestureListener extends GestureDetector.SimpleOnGestureListener {
private static final int SWIPE_THRESHOLD = 100;
private static final int SWIPE_VELOCITY_THRESHOLD = 100;
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
onClick();
return super.onSingleTapUp(e);
}
@Override
public boolean onDoubleTap(MotionEvent e) {
onDoubleClick();
return super.onDoubleTap(e);
}
@Override
public void onLongPress(MotionEvent e) {
onLongClick();
super.onLongPress(e);
}
// Determines the fling velocity and then fires the appropriate swipe event accordingly
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
boolean result = false;
try {
float diffY = e2.getY() - e1.getY();
float diffX = e2.getX() - e1.getX();
if (Math.abs(diffX) > Math.abs(diffY)) {
if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
if (diffX > 0) {
onSwipeRight();
} else {
onSwipeLeft();
}
}
} else {
if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
if (diffY > 0) {
onSwipeDown();
} else {
onSwipeUp();
}
}
}
} catch (Exception exception) {
exception.printStackTrace();
}
return result;
}
}
public void onSwipeRight() {
}
public void onSwipeLeft() {
}
public void onSwipeUp() {
}
public void onSwipeDown() {
}
public void onClick() {
}
public void onDoubleClick() {
}
public void onLongClick() {
}
}
【讨论】：
我尝试在我的项目中应用@Biraj 解决方案，但没有成功——我注意到SimpleOnGestureListener 的扩展不仅应该覆盖onSingleTapConfirmed 方法，还应该覆盖onDown。由于documentation：
如果你从 onDown() 返回 false，就像 GestureDetector.SimpleOnGestureListener 默认做的那样，系统假定你想忽略手势的其余部分，并且 GestureDetector.OnGestureListener 的其他方法永远不会被调用
下面是复杂的解决方案：
public class MainActivity extends Activity {
private GestureDetector gestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gestureDetector = new GestureDetectorCompat(this, new SingleTapConfirm());
ImageButton imageButton = (ImageButton) findViewById(R.id.img);
imageButton.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
if (gestureDetector.onTouchEvent(arg1)) {
// single tap
return true;
} else {
// your code for move and drag
}
return false;
}
});
}
private class SingleTapConfirm extends SimpleOnGestureListener {
@Override
public boolean onDown(MotionEvent e) {
/*it needs to return true if we don't want
to ignore rest of the gestures*/
return true;
}
@Override
public boolean onSingleTapConfirmed(MotionEvent event) {
return true;
}
}
}
我想，这种行为可能是由 GestureDetectorCompat 差异引起的，但我会关注documentation，我将使用第二个：
您应该尽可能使用支持库类以提供与运行 Android 1.6 及更高版本的设备的兼容性
【讨论】：
在MainActivity 中编码。
public class OnSwipeTouchListener_imp extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_on_swipe_touch_listener);
ImageView view = (ImageView)findViewById(R.id.view);
view.setOnTouchListener(new OnSwipeTouchListener(OnSwipeTouchListener_imp.this)
{
@Override
public void onClick()
{
super.onClick(); // your on click here
Toast.makeText(getApplicationContext(),"onClick",Toast.LENGTH_SHORT).show();
}
@Override
public void onDoubleClick()
{
super.onDoubleClick(); // your on onDoubleClick here
}
@Override
public void onLongClick()
{
super.onLongClick(); // your on onLongClick here
}
@Override
public void onSwipeUp() {
super.onSwipeUp(); // your swipe up here
}
@Override
public void onSwipeDown() {
super.onSwipeDown(); // your swipe down here.
}
@Override
public void onSwipeLeft() {
super.onSwipeLeft(); // your swipe left here.
Toast.makeText(getApplicationContext(),"onSwipeLeft",Toast.LENGTH_SHORT).show();
}
@Override
public void onSwipeRight() {
super.onSwipeRight(); // your swipe right here.
Toast.makeText(getApplicationContext(),"onSwipeRight",Toast.LENGTH_SHORT).show();
}
});
}
}
然后创建一个OnSwipeTouchListener java Class。
public class OnSwipeTouchListener implements View.OnTouchListener {
private GestureDetector gestureDetector;
public OnSwipeTouchListener(Context c) {
gestureDetector = new GestureDetector(c, new GestureListener());
}
public boolean onTouch(final View view, final MotionEvent motionEvent) {
return gestureDetector.onTouchEvent(motionEvent);
}
private final class GestureListener extends GestureDetector.SimpleOnGestureListener {
private static final int SWIPE_THRESHOLD = 100;
private static final int SWIPE_VELOCITY_THRESHOLD = 100;
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
onClick();
return super.onSingleTapUp(e);
}
@Override
public boolean onDoubleTap(MotionEvent e) {
onDoubleClick();
return super.onDoubleTap(e);
}
@Override
public void onLongPress(MotionEvent e) {
onLongClick();
super.onLongPress(e);
}
// Determines the fling velocity and then fires the appropriate swipe event accordingly
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
boolean result = false;
try {
float diffY = e2.getY() - e1.getY();
float diffX = e2.getX() - e1.getX();
if (Math.abs(diffX) > Math.abs(diffY)) {
if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD)
{
if (diffX > 0)
{
onSwipeRight(); // Right swipe
} else {
onSwipeLeft(); // Left swipe
}
}
} else {
if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
if (diffY > 0) {
onSwipeDown(); // Down swipe
} else {
onSwipeUp(); // Up swipe
}
}
}
} catch (Exception exception) {
exception.printStackTrace();
}
return result;
}
}
public void onSwipeRight() {
}
public void onSwipeLeft() {
}
public void onSwipeUp() {
}
public void onSwipeDown() {
}
public void onClick() {
}
public void onDoubleClick() {
}
public void onLongClick() {
}
}
希望这能照亮你:)
【讨论】：
希望我还不算太晚，但您可以通过计时器实现这一目标。 单击只需不到一秒钟，因此请记住这一点....
long prev=0;
long current = 0;
long dif =0;
public boolean onTouch(View view, MotionEvent event) {
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
prev = System.currentTimeMillis() / 1000;
break;
case MotionEvent.ACTION_UP:
current = System.currentTimeMillis() / 1000;
dif = current - prev;
if (dif == 0) {
//Perform Your Click Action
}
break;
}
}
希望对大家有所帮助
【讨论】：
您可以通过获取 x,y 值的差异来区分触摸、点击和滑动，例如：
var prevY = 0
var prevX = 0
controls.setOnTouchListener { v, event ->
when (event?.actionMasked) {
MotionEvent.ACTION_DOWN -> {
prevY = event.rawY.toInt()
prevX = event.rawX.toInt()
}
MotionEvent.ACTION_UP->{
Log.d("Controls","Action up")
var y = event.rawY.toInt()
var x = event.rawX.toInt()
val diffY = Math.abs(prevY - y)
val diffX = Math.abs(prevX - x)
if(diffX in 0..10 && diffY in 0..10){
// its a touch
}
//check diffY if negative, is a swipe down, else swipe up
//check diffX if negative, its a swipe right, else swipe left
}
}
true
}
【讨论】：
Perfect example for Both touch n tap both
private void touchNtap() {
GestureDetector gestureDetector = new GestureDetector(itemView.getContext()
, new SingleTapConfirm());
imageView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) {
// program for click events
gestureDetector.setOnDoubleTapListener(new GestureDetector.OnDoubleTapListener() {
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
Log.d(TAG, "onSingleTapConfirmed() returned: " + true);
return false;
}
@Override
public boolean onDoubleTap(MotionEvent e) {
Log.d(TAG, "onDoubleTap() returned: " + true);
return false;
}
@Override
public boolean onDoubleTapEvent(MotionEvent e) {
Log.d(TAG, "onDoubleTapEvent() returned: " + true);
return false;
}
});
return true;
}else {
//program for touch events
}
return false;
}
});
}
Create a Inner class
private class SingleTapConfirm extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onSingleTapUp(MotionEvent event) {
return true;
}
@Override
public boolean onDoubleTap(MotionEvent e) {
return true;
}
}
【讨论】：