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Masoud Dadashi's answer helped me figure it out.

here is how it looks in the end.

viewPager.setOnTouchListener(new OnTouchListener() { private int CLICK_ACTION_THRESHHOLD = 200; private float startX; private float startY; @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: startX = event.getX(); startY = event.getY(); break; case MotionEvent.ACTION_UP: float endX = event.getX(); float endY = event.getY(); if (isAClick(startX, endX, startY, endY)) { launchFullPhotoActivity(imageUrls);// WE HAVE A CLICK!! } break; } v.getParent().requestDisallowInterceptTouchEvent(true); //specific to my project return false; //specific to my project } private boolean isAClick(float startX, float endX, float startY, float endY) { float differenceX = Math.abs(startX - endX); float differenceY = Math.abs(startY - endY); if (differenceX > CLICK_ACTION_THRESHHOLD/* =5 */ || differenceY > CLICK_ACTION_THRESHHOLD) { return false; } return true; } } 

Masoud Dadashi's answer helped me figure it out.

here is how it looks in the end.

viewPager.setOnTouchListener(new OnTouchListener() { private int CLICK_ACTION_THRESHOLD = 200; private float startX; private float startY; @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: startX = event.getX(); startY = event.getY(); break; case MotionEvent.ACTION_UP: float endX = event.getX(); float endY = event.getY(); if (isAClick(startX, endX, startY, endY)) { launchFullPhotoActivity(imageUrls);// WE HAVE A CLICK!! } break; } v.getParent().requestDisallowInterceptTouchEvent(true); //specific to my project return false; //specific to my project } private boolean isAClick(float startX, float endX, float startY, float endY) { float differenceX = Math.abs(startX - endX); float differenceY = Math.abs(startY - endY); return !(differenceX > CLICK_ACTION_THRESHOLD/* =5 */ || differenceY > CLICK_ACTION_THRESHOLD); } } 

Masoud Dadashi's answer helped me figure it out.

here is how it looks in the end.

viewPager.setOnTouchListener(new OnTouchListener() { private float startX; private float startY; @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: startX = event.getX(); startY = event.getY(); break; case MotionEvent.ACTION_UP: float endX = event.getX(); float endY = event.getY(); if (isAClick(startX, endX, startY, endY)) { launchFullPhotoActivity(imageUrls);// WE HAVE A CLICK!! } break; } v.getParent().requestDisallowInterceptTouchEvent(true); //specific to my project return false; //specific to my project } 

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private boolean isAClick(float startX, float endX, float startY, float endY) { float differenceX = Math.abs(startX - endX); float differenceY = Math.abs(startY - endY); if (differenceX > C.CLICK_ACTION_THRESHHOLD/* =5 */ || differenceY > C.CLICK_ACTION_THRESHHOLD) { return false; } return true; } 

Masoud Dadashi's answer helped me figure it out.

here is how it looks in the end.

viewPager.setOnTouchListener(new OnTouchListener() { private int CLICK_ACTION_THRESHHOLD = 200; private float startX; private float startY;   @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: startX = event.getX(); startY = event.getY(); break; case MotionEvent.ACTION_UP: float endX = event.getX(); float endY = event.getY(); if (isAClick(startX, endX, startY, endY)) { launchFullPhotoActivity(imageUrls);// WE HAVE A CLICK!! } break; } v.getParent().requestDisallowInterceptTouchEvent(true); //specific to my project return false; //specific to my project }  private boolean isAClick(float startX, float endX, float startY, float endY) {   float differenceX = Math.abs(startX - endX);   float differenceY = Math.abs(startY - endY);   if (differenceX > CLICK_ACTION_THRESHHOLD/* =5 */ || differenceY > CLICK_ACTION_THRESHHOLD) {   return false;   }   return true;  }  } 

Masoud Dadashi's answer helped me figure it out.

here is how it looks in the end.

viewPager.setOnTouchListener(new OnTouchListener() {   private float startX;   private float startY;   @Override   public boolean onTouch(View v, MotionEvent event) {   switch (event.getAction()) {   case MotionEvent.ACTION_DOWN:   startX = event.getX();   startY = event.getY();   break;   case MotionEvent.ACTION_UP: {   float endX = event.getX();   float endY = event.getY();   if (isAClick(startX, endX, startY, endY)) {   launchFullPhotoActivity(imageUrls);// WE HAVE A CLICK!!   }   break;   }   } v.getParent().requestDisallowInterceptTouchEvent(true); //specific to my project   return false; //specific to my project   } 

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private boolean isAClick(float startX, float endX, float startY, float endY) { float differenceX = Math.abs(startX - endX); float differenceY = Math.abs(startY - endY); if (differenceX > C.CLICK_ACTION_THRESHHOLD/* =5 */ || differenceY > C.CLICK_ACTION_THRESHHOLD) { return false; } return true; } 

Masoud Dadashi's answer helped me figure it out.

here is how it looks in the end.

viewPager.setOnTouchListener(new OnTouchListener() { private float startX; private float startY; @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: startX = event.getX(); startY = event.getY(); break; case MotionEvent.ACTION_UP: float endX = event.getX(); float endY = event.getY(); if (isAClick(startX, endX, startY, endY)) { launchFullPhotoActivity(imageUrls);// WE HAVE A CLICK!! } break; } v.getParent().requestDisallowInterceptTouchEvent(true); //specific to my project return false; //specific to my project } 

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private boolean isAClick(float startX, float endX, float startY, float endY) { float differenceX = Math.abs(startX - endX); float differenceY = Math.abs(startY - endY); if (differenceX > C.CLICK_ACTION_THRESHHOLD/* =5 */ || differenceY > C.CLICK_ACTION_THRESHHOLD) {   return false; }   return true; }