I have an imageButton I want to play a music when, after a long press on my button , I remove hand from the button, then it will play music ,until I press another button , to stop it,
You can use an onTouchListener for this purpose:
view.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()) {
case MotionEvent.ACTION_DOWN:
// PRESSED
return true; // if you want to handle the touch event
case MotionEvent.ACTION_UP:
// RELEASED : Play the music here
return true; // if you want to handle the touch event
}
return false;
}
});
Related
I want to create a countdown timer in my app. There will be two buttons, one for increasing time and other for decreasing time. When the user holds down the button i want to get the app to repeat to add time.
I have already tried
this
but i got errors
You need to use onTouchListener
button.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()) {
case MotionEvent.ACTION_DOWN:
// PRESSED
// You can call a thread here which will keep increasing the time
return true;
case MotionEvent.ACTION_UP:
// RELEASED
// Stop the thread here
return true;
}
return false;
}
});
How can I detect clicked, pressed and released states of a Button. I want to perform different functions on these states. On click I want to call function1, on press I want to call function2 and on receive I want to call function3.
We can detect click state using View.OnClickListener. We can detect Pressed and Released states of a Button using View.OnTouchListener and handling ACTION_DOWN and ACTION_UP. I am able to detect these states individually, however, not together.
Below is code for OnCLickListener.
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
System.out.println(" clicked ");
}
});
Below is code for OnTouchListener.
button.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()) {
case MotionEvent.ACTION_DOWN:
System.out.println(" pressed ");
return true;
case MotionEvent.ACTION_UP:
System.out.println(" released ");
return true;
}
return false;
}
});
When I set click and touch listeners on a Button, Click event never gets called. Instead I receive pressed and released state.
How can I handle these three states together?
EDIT:
I added the OnClickListener and OnTouchListener code I have used.
Easy since Button is a View:
button.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
// Pressed
} else if (event.getAction() == MotionEvent.ACTION_UP) {
// Released
}
return true;
}
});
Change the return true; inside case MotionEvent.ACTION_DOWN: and case MotionEvent.ACTION_UP:to return false; or break;
See this link.
You can handle click manually in MotionEvent.ACTION_UP event by
button.performClick();
clicked event include pressed and released state,if you want to fire clicked event,put method after ACTION_UP
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;
}
}
Ok... in my app i update the layout on MotionEvent.ACTION_DOWN and then i check the motion event coordinates to locate my buttons. I can show a toast when finger is released on different buttons. The problem is i need a long touch on my buttons to call another action without conflicting with the MotionEvent.ACTION_UP. Implemented a long click handler but since i don't 'click' its not working. Hope you guys understand my problem.
Whats the best way to get my app working as intended?
My class implements OnTouchListener, OnGestureListener
#Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()){
case MotionEvent.ACTION_DOWN:
// UPDATE LAYOUT
break;
case MotionEvent.ACTION_UP:
// GET BUTTON X Y
if (x and y match the button location){
// DO ACTION
}else{
// DO NOTHING
}
// CHANGE LAYOUT TO INITIAL STATE
break;
case MotionEvent.ACTION_MOVE:
break;
}
return false;
mybutton.setOnLongClickListener(new OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
// DO STUFF
return true;
}
});
}
just try to return false in your onTouch(...) method and use onLongClickListener(...) as usual
I need to be able to tell when the user is holding a button down and when the user lets go. This is different from onClickListener and onLongClickListener. How would i go about doing something like this?
For example I press a button that starts a chronometer.(pseudo code)
if ButtonIsBeingPressed
{
chronometer start(); //and keep going
}
else chronometer stop();
//or on release or something
}
Look into the OnTouchListener it has MotionEvents for Down (press) and Up (release):
view.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()) {
case MotionEvent.ACTION_DOWN:
// Start
break;
case MotionEvent.ACTION_UP:
// End
break;
}
return false;
}
});