StackOverflow2013

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copied!<p>Yes I too had the same problem not with TouchImageView.</p> <p>Too solved the problem what i did is disabled the ViewPager when my view is getting the focus.</p> <pre><code>public class EnableDisableViewPager extends ViewPager { private boolean enabled = true; public EnableDisableViewPager(Context context, AttributeSet attrs) { super(context, attrs); } @Override public boolean onInterceptTouchEvent(MotionEvent arg0) { if(enabled) return super.onInterceptTouchEvent(arg0); return false; } public boolean isEnabled() { return enabled; } public void setEnabled(boolean enabled) { this.enabled = enabled; } } </code></pre> <p>so in TouchImageView implement your listener to trigger an event whether its zooming or dragging.</p> <p>set listener to your view object in your Activity. So when those event occur just disable the view Pager.</p> <p><strong>Note</strong>: you will also need a mouse up event to enable the viewpager.</p> <p><strong>EDITED</strong></p> <p>This will work only for Zoom, so for ViewPager to swipe pages you should zoom back to original. </p> <p>Add these code to your TouchImageView</p> <pre><code> public class TouchImageView extends ImageView { ... private TouchEventListener touchEventListener; private void sharedConstructing(Context context) { ... setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { ... case MotionEvent.ACTION_UP: ... if(touchEventListener != null) { if(saveScale == 1.0) touchEventListener.onZoomToOriginal(); else touchEventListener.onZoom(); } break; ... } ... } }); } ... public TouchEventListener getTouchEventListener() { return touchEventListener; } public void setTouchEventListener(TouchEventListener touchEventListener) { this.touchEventListener = touchEventListener; } public interface TouchEventListener { void onZoom(); void onZoomToOriginal(); } } </code></pre> <p><strong>BETTER SOLUTION</strong></p> <p>We could achieve this without extending ViewPager to a new Class by using the method given below.</p> <pre><code>requestDisallowInterceptTouchEvent(true); </code></pre> <p>And with this we could swipe without zooming out to original position as we see in Gallery and many other apps.</p> <pre><code>public class TouchImageView extends ImageView { ... private void stopInterceptEvent() { getParent().requestDisallowInterceptTouchEvent(true); } private void startInterceptEvent() { getParent().requestDisallowInterceptTouchEvent(false); } private void sharedConstructing(Context context) { super.setClickable(true); this.context = context; mScaleDetector = new ScaleGestureDetector(context, new ScaleListener()); matrix.setTranslate(1f, 1f); m = new float[9]; setImageMatrix(matrix); setScaleType(ScaleType.MATRIX); setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { mScaleDetector.onTouchEvent(event); matrix.getValues(m); float x = m[Matrix.MTRANS_X]; float y = m[Matrix.MTRANS_Y]; PointF curr = new PointF(event.getX(), event.getY()); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: last.set(event.getX(), event.getY()); start.set(last); mode = DRAG; stopInterceptEvent(); break; case MotionEvent.ACTION_MOVE: if (mode == DRAG) { float deltaX = curr.x - last.x; float deltaY = curr.y - last.y; float scaleWidth = Math.round(origWidth * saveScale); float scaleHeight = Math.round(origHeight * saveScale); if (scaleWidth < width) { deltaX = 0; if (y + deltaY > 0) deltaY = -y; else if (y + deltaY < -bottom) deltaY = -(y + bottom); } else if (scaleHeight < height) { deltaY = 0; if (x + deltaX > 0) deltaX = -x; else if (x + deltaX < -right) deltaX = -(x + right); } else { if (x + deltaX > 0) deltaX = -x; else if (x + deltaX < -right) deltaX = -(x + right); if (y + deltaY > 0) deltaY = -y; else if (y + deltaY < -bottom) deltaY = -(y + bottom); } if(deltaX == 0) startInterceptEvent(); else stopInterceptEvent(); matrix.postTranslate(deltaX, deltaY); last.set(curr.x, curr.y); } break; case MotionEvent.ACTION_UP: mode = NONE; int xDiff = (int) Math.abs(curr.x - start.x); int yDiff = (int) Math.abs(curr.y - start.y); if (xDiff < CLICK && yDiff < CLICK) performClick(); startInterceptEvent(); break; case MotionEvent.ACTION_POINTER_UP: mode = NONE; break; } setImageMatrix(matrix); invalidate(); return true; // indicate event was handled } }); } } </code></pre>

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