Develop Reference

Android MotionEvent to detect only ACTION_MOVE

As per android MotionEvent documents: A change has happened during a press gesture (between ACTION_DOWN and ACTION_UP). The motion contains the most recent point, as well as any intermediate points since the last down or move event.
ACTION_MOVE Android doc
so when i apply a setOnTouchListene on my view is perfectly works, It give me ACTION_DOWN, ACTION_UP, and ACTION_MOVE
but my problem is i just want to ignore a ACTION_DOWN events exactly before ACTION_MOVE. Because ACTION_MOVE event occur only after the ACTION_DOWN event as per its documents.
my coding:
button.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
Log.e("Mouse: ", "Click");
break;
case MotionEvent.ACTION_MOVE:
Log.e("Mouse: ", "Move");
break;
}
return false;
}
});
So, there is any why to ignore ACTION_DOWN event. Because user only want to move not want to click, and ACTION_MOVE is also occur ACTION_DOWN before it execute it self.
Thanks...

According to your comment - you can play with counter. For example:
private static int counter = 0;
...
button.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
Log.e("Mouse: ", "Click");
break;
case MotionEvent.ACTION_MOVE:
counter++; //check how long the button is pressed
if(counter>10){
Log.e("Mouse: ", "Move");
}
break;
case MotionEvent.ACTION_UP:
if(counter<10){
//this is just onClick, handle it(10 is example, try different numbers)
}else{
//it's a move
}
counter = 0;
break;
}
return false;
}
});

How to cancel View.OnDragListener in android during dragging Operation?

Im using view.startDrag() to start dragging operation. While dragging, events are received in OnDragListener. Also im using DragShadowBuilder to show the last image of View B while dragging.
Is there a way to stop or cancel or abort dragging from some external events or operation? for example, there are 2 view, View A and View B, i'm dragging View B over View A. While dragging, due to some external event or operation, i want to cancel dragging operations or cancel OnDragListener (without removing my finger from the view B).
Code Snippet for DragShadowBuilder:
DragShadowBuilder shadowBuilder = new DragShadowBuilder(view) {
#Override
public void onDrawShadow(Canvas canvas) {
canvas.drawBitmap(b, 0, 0, new Paint());
super.onDrawShadow(canvas);
}
};
boolean dragSuccess = false;
dragSuccess = view.startDrag(null, shadowBuilder, view, 0);
Code Snippet for OnDragListener:
private final class ViewDragListener implements OnDragListener {
#Override
public boolean onDrag(View v, DragEvent event) {
int action = event.getAction();
switch (event.getAction()) {
case DragEvent.ACTION_DRAG_STARTED:
log("ACTION_DRAG_STARTED");
break;
case DragEvent.ACTION_DRAG_ENTERED:
log("ACTION_DRAG_ENTERED");
break;
case DragEvent.ACTION_DRAG_EXITED:
log("ACTION_DRAG_EXITED");
case DragEvent.ACTION_DROP:
log("ACTION_DROP");
mX = (int) event.getX();
mY = (int)event.getY();
break;
case DragEvent.ACTION_DRAG_ENDED:
log("ACTION_DRAG_ENDED");
//Doing some cleanup operations.
break;
case DragEvent.ACTION_DRAG_LOCATION:
log("ACTION_DRAG_LOCATION");
break;
default:
break;
}
return true;
}
}

I couldn't find any trick for this. I tried sending a motion event of ACTION_UP and it did nothing. As long as the user's finger is held down, there's no interrupting the event hierarchy, it seems. I found nothing to help with a google search.
I just set a global and waited until the drag ended, then proceeded.

How to get android activity or controls touch count?

I want to get activity or any control element's touch counts.
Like Android 4.2 on nexus Developer options Enable while touching 7 times.
What is the suitable event to handle it ?

You are getting 2 count's because the touch event are called every time a touch event is snet, like tump down and tump up (for example)
#Override
public boolean onTouchEvent(MotionEvent event) {
int action = MotionEventCompat.getActionMasked(event);
switch (action) {
case MotionEvent.ACTION_DOWN:
//add here the counter if you want when screen pressed
break;
case MotionEvent.ACTION_UP:
//add here the counter if you want when touch released
break;
default:
return super.onTouchEvent(event);
}
}

You can use a View.OnTouchListener, overriding the onTouch method :
#Override
public boolean onTouch(final View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// increment counter
break;
}
}

Android Imageview setOnTouchListener not working?

i'am using imageview on touch listener in this motion event not working why this happen any one have idea regarding this help me.
here is my code
img_View11.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
Log.i("img_View11", "img_View11 _1");
int action = event.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
Log.i("img_View11", "img_View11 _2");
break;
case MotionEvent.ACTION_MOVE:
Log.i("img_View11", "img_View11 _3");
break;
case MotionEvent.ACTION_UP:
Log.i("img_View11", "img_View11 _4");
break;
}
return false;
}
});
here my out put show like this img_View11_1 and two img_View11_2
Log.i("img_View11", "img_View11 _1");
Log.i("img_View11", "img_View11 _2");
Question: Why MotionEvent.ACTION_MOVE and MotionEvent.ACTION_UP not working ?

Change "return false;" to "return true;" so that it will continue to receive calls.

Multitouch: ACTION_POINTER_DOWN & ACTION_POINTER_UP

I'm trying to use multitouch as a method to press 2 things simultaneously.
Here's my Code:
TouchHandle.setOnTouchListener(new OnTouchListener () {
public boolean onTouch(View view, MotionEvent event) {
int actions = event.getActionMasked();
switch (actions)
{
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_POINTER_DOWN:
SendKeyCode(Server, "keydec.down");
case MotionEvent.ACTION_POINTER_UP:
SendKeyCode(Server, "keydec.up");
case MotionEvent.ACTION_UP:
}
return true;
}
});
The problem is that when I touch the screen, the server is retrieving "keydec.down" and "keydec.up" even thought I haven't removed my finger yet from the touchscreen. So the View TouchHandle is detecting an ACTION_POINTER_DOWN and ACTION_POINTER_UP when my finger touches the screen even if I haven't pulled my finger up yet. Any thoughts?

int actions = event.getAction();
switch (actions)
{
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_POINTER_DOWN:
SendKeyCode(Server, "keydec.down");
break;
case MotionEvent.ACTION_POINTER_UP:
SendKeyCode(Server, "keydec.up");
break;
case MotionEvent.ACTION_UP:
break;
}
You should use breaks between cases. And i also think that these MotionEvent constants might work with event.getAction() try that one.