Develop Reference

How to check for hold click Android studio/java

I want to make in my app when I hold click it does something and when I release the button it does something else. A variable will change to true when I hold and false when I release. How do I do that
(Android Studio)
Thanks

You have to use TouchListener and MotionEvent class. The MotionEvent class has Fields ACTION_UP, ACTION_DOWN, and ACTION_MOVE. You can use the getAction() method of the MotionEvent class.
Something like this
findViewById(R.id.btn).setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
// button pressed
} else if (event.getAction() == MotionEvent.ACTION_UP) {
// button relased.
}
return false;
}
});

You can use the onTouchListener for your use case:
boolean isClicking = false;
myView.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
// the view is pressed
isClicking = true;
} else if (event.getAction() == MotionEvent.ACTION_UP) {
// the view is released.
isClicking = true;
}
return false;
}
});

View setVisibility with GestureDetector in Android

I have a GestureListener with a view. I want to change view visibility based on the GestureListener results. On double tap show the view, on single tap hide it. And I want to show the vie when I'll hold my finger on the display (snapchat like feature).
mDetector = new GestureDetectorCompat(this, this);
mDetector.setOnDoubleTapListener(this);
view.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
mDetector.onTouchEvent(event);
return true;
}
});
Here's my gesture listeners.. On double tap it'll show my view but it keeps the view visible
#Override
public boolean onSingleTapUp(MotionEvent event) {
Log.d(DEBUG_TAG, "onSingleTapUp: " + event.toString());
text.setVisibility(View.INVISIBLE);
return true;
}
#Override
public boolean onDoubleTap(MotionEvent event) {
Log.d(DEBUG_TAG, "onDoubleTap: " + event.toString());
text.setVisibility(View.VISIBLE);
return true;
}

I had a similar problem and I added
ImageView imgView11 = (ImageView)findViewById(R.id.imagek11d);
just before imgView11.setVisibility(View.INVISIBLE);
and before imgView11.setVisibility(View.VISIBLE);

Using OnLongTouch to move image to string

I'm trying to use this code to set an "ontouchlistener". It says there are no errors in the code but when I try to run it I get a force quit... what is going wrong? any ideas?
final Handler handler = new Handler();
Runnable mLongPressed = new Runnable() {
public void run() {
}
};
#Override
public boolean onTouchEvent(MotionEvent event, View v){
if(event.getAction() == MotionEvent.ACTION_DOWN)
handler.postDelayed(mLongPressed, 1000);
if((event.getAction() == MotionEvent.ACTION_MOVE)||(event.getAction() ==
MotionEvent.ACTION_UP))
handler.removeCallbacks(mLongPressed);
return false;
}

In OnTouchListener the event function is:
public abstract boolean onTouch (View v, MotionEvent event)
which is called when a touch event is dispatched to a view. But you are using this one?:
public boolean onTouchEvent(MotionEvent event, View v)
To implement the listener, we can easily do this:
myImgView.setOnTouchListener(new OnTouchListener()
{
#Override
public boolean onTouch(View v, MotionEvent event)
{
// put your code here
return false;
}
});

Animation Starts when touch and Stops when UnTouched

So my question is how can I make an animation Starts when touch and Once it's not Touched it plays another animation ..
(sorry for my English..)
main.java :
public class Main extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ImageView is = (ImageView) findViewById(R.id.img1);
is.setBackgroundResource(R.animator.animup);
final AnimationDrawable animup = (AnimationDrawable) is.getBackground();
final ImageView iv = (ImageView) findViewById(R.id.img1);
iv.setBackgroundResource(R.animator.anim);
final AnimationDrawable anim = (AnimationDrawable) iv.getBackground();
is.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
anim.setVisible(true, true);
anim.start();
//perform your animation when button is touched and held
} else if (event.getAction() == MotionEvent.ACTION_UP) {
anim.setVisible(true, true);
animup.start();
//perform your animation when button is released
}
return false;
}
});
};
;
}
+Another Problem......
EDITED

I reckon this link will help you.
Edit
For implementing touch and release you have to use onTouchListener rather than onClickListener.
Below is the code-
button.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
//perform your animation when button is touched and held
} else if (event.getAction() == MotionEvent.ACTION_UP) {
//perform your animation when button is released
}
}
};
Edit 2
In the else if block you are not setting the visibility of anim to false. I feel that is the problem. Rewrite your code as this-
button.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
anim.setVisible(true,true);
anim.start();
} else if (event.getAction() == MotionEvent.ACTION_UP) {
anim.stop(); //perform your animation when button is released
animup.setVisible(true,true);
animup.start();
}
}
};

How to set up an onTouchListener that changes an ImageView image resource?

I want to setup up an onTouchListener that changes an ImageViews image resource on ACTION_UP and ACTION_DOWN. Here is my code:
// Setup a basic upDownListener that registers UP and DOWN actions and changes the
// view image resource accordingly
View.OnTouchListener upDownListener = new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
// Button was pressed, change button background
v.setImageResource(R.drawable.button_white_pressure);
return true;
} else if(event.getAction() == MotionEvent.ACTION_UP) {
// Button was released, reset button background
v.setImageResource(R.drawable.button_white);
return true;
}
return false;
}
};
This code does not compile because View does not have the method setImageResource, only ImageView. But how do I tell the listener that an ImageView is being used?

Cast the incoming View to an ImageView.
Sample code:
#Override
public boolean onTouch(View v, MotionEvent event) {
ImageView iv = (ImageView) v;
if (event.getAction() == MotionEvent.ACTION_DOWN) {
iv.setImageResource(R.drawable.button_white_pressure);
return true;
} else if (event.getAction() == MotionEvent.ACTION_UP) {
iv.setImageResource(R.drawable.button_white);
return true;
}
return false;
}

View.OnTouchListener upDownListener = new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
ImageView v = (ImageView) v;
if(event.getAction() == MotionEvent.ACTION_DOWN) {
// Button was pressed, change button background
v.setImageResource(R.drawable.button_white_pressure);
return true;
} else if(event.getAction() == MotionEvent.ACTION_UP) {
// Button was released, reset button background
v.setImageResource(R.drawable.button_white);
return true;
}
return false;
}
};