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2014/10/16 ¤W¤È 08:12:31
android Programming Glossary: dispatchdrawAndroid Custom Layout - onDraw() never gets called http://stackoverflow.com/questions/13056331/android-custom-layout-ondraw-never-gets-called called for ViewGroup objects. Instead you can override dispatchDraw . Alternatively you can enable ViewGroup drawing by calling..
What is the android UI thread stack size limit and how to overcome it? http://stackoverflow.com/questions/16843357/what-is-the-android-ui-thread-stack-size-limit-and-how-to-overcome-it ViewGroup.java 1646 at android.view.ViewGroup.dispatchDraw ViewGroup.java 1373 at android.view.View.draw View.java 6883.. ViewGroup.java 1646 at android.view.ViewGroup.dispatchDraw ViewGroup.java 1373 ... Research points to my view hierarchy.. view layer adds about 3 function calls View.draw ViewGroup.dispatchDraw ViewGroup.drawChild . Maybe I can make my own ViewGroup implementation..
http://stackoverflow.com/questions/1830391/rotate-mapview-in-android be overwritten. As a result I have tried to overwrite the dispatchDraw method like so Note compass is a boolean that if true rotate.. has the degrees that the view should rotate protected void dispatchDraw Canvas canvas canvas.save if compass final float w this.getWidth.. scaleFactor scaleFactor centerX centerY super.dispatchDraw canvas canvas.restore android google maps map rotation android..
Rotate View Hierarchy 90 degrees http://stackoverflow.com/questions/3444764/rotate-view-hierarchy-90-degrees super.onSizeChanged w h oldw oldh @Override protected void dispatchDraw Canvas canvas canvas.rotate 270 getWidth 2 getHeight 2 This.. need to use for proper positioning of touch events super.dispatchDraw canvas canvas.restore @Override public boolean dispatchTouchEvent..
How to implemennt OnZoomListener on MapView http://stackoverflow.com/questions/4729255/how-to-implemennt-onzoomlistener-on-mapview this question I had to subclass MapView and override dispatchDraw Here is the code int oldZoomLevel 1 @Override public void dispatchDraw.. Here is the code int oldZoomLevel 1 @Override public void dispatchDraw Canvas canvas super.dispatchDraw canvas if getZoomLevel oldZoomLevel.. 1 @Override public void dispatchDraw Canvas canvas super.dispatchDraw canvas if getZoomLevel oldZoomLevel Log.d TAG ZOOOMED oldZoomLevel..
http://stackoverflow.com/questions/6028999/android-rotating-mapview create a custom ViewGroup that rotates the Canvas in the dispatchDraw method. You also need to increase the size of the MapView so.. float pBearing mBearing pBearing @Override protected void dispatchDraw final Canvas pCanvas pCanvas.rotate mBearing getWidth 1 getHeight.. pCanvas.rotate mBearing getWidth 1 getHeight 1 super.dispatchDraw pCanvas @Override protected void onMeasure final int pWidthMeasureSpec..
Extending RelativeLayout, and overriding dispatchDraw() to create a zoomable ViewGroup http://stackoverflow.com/questions/6378904/extending-relativelayout-and-overriding-dispatchdraw-to-create-a-zoomable-vie RelativeLayout and overriding dispatchDraw to create a zoomable ViewGroup I've seen a few people ask how.. could be applied just once to the Canvas in the overridden dispatchDraw function so that there would be absolutely no need to separately.. It's just a simple extension of RelativeLayout with dispatchDraw being overridden protected void dispatchDraw Canvas canvas ..
background scrolling with item in gridview http://stackoverflow.com/questions/6734635/background-scrolling-with-item-in-gridview this.selectedBook book invalidate @Override protected void dispatchDraw Canvas canvas final int count getChildCount final int top count.. top canvas.drawBitmap background source dest null super.dispatchDraw canvas @Override public boolean onKeyDown int keyCode KeyEvent..
Is it possible to mask a View in android? http://stackoverflow.com/questions/7559171/is-it-possible-to-mask-a-view-in-android 10 10 Direction.CW ...... @Override protected void dispatchDraw Canvas canvas canvas.clipPath path super.dispatchDraw canvas.. void dispatchDraw Canvas canvas canvas.clipPath path super.dispatchDraw canvas this will draw your view only in the boundaries set by..
Multi-layered ExpandableListView http://stackoverflow.com/questions/8293538/multi-layered-expandablelistview the scratch I mean you understand methods requestLayout dispatchDraw and so on then write your own GrandExpandableListAdapter with..
ListView random IndexOutOfBoundsException on Froyo http://stackoverflow.com/questions/8431342/listview-random-indexoutofboundsexception-on-froyo 16 4 16783 AndroidRuntime E at android.widget.ListView.dispatchDrawWithExcessScroll_Default ListView.java 3 288 16783 AndroidRuntime.. 3 288 16783 AndroidRuntime E at android.widget.ListView.dispatchDraw ListView.java 3029 16783 AndroidRuntime E at android.view.View.draw.. 1640 16783 AndroidRuntime E at android.view.ViewGroup.dispatchDraw ViewGroup.java 1367 16783 AndroidRuntime E at android.view.View.draw..
Android Custom Layout - onDraw() never gets called http://stackoverflow.com/questions/13056331/android-custom-layout-ondraw-never-gets-called share improve this question By default onDraw isn't called for ViewGroup objects. Instead you can override dispatchDraw . Alternatively you can enable ViewGroup drawing by calling setWillNotDrawEnabled false in your TableView constructor. See..
What is the android UI thread stack size limit and how to overcome it? http://stackoverflow.com/questions/16843357/what-is-the-android-ui-thread-stack-size-limit-and-how-to-overcome-it View.java 6880 at android.view.ViewGroup.drawChild ViewGroup.java 1646 at android.view.ViewGroup.dispatchDraw ViewGroup.java 1373 at android.view.View.draw View.java 6883 at android.view.ViewGroup.drawChild ViewGroup.java 1646 at.. View.java 6883 at android.view.ViewGroup.drawChild ViewGroup.java 1646 at android.view.ViewGroup.dispatchDraw ViewGroup.java 1373 ... Research points to my view hierarchy being too deep for Android to handle. Indeed using Hierarchy.. optimization should be done Crazy idea I noticed that every view layer adds about 3 function calls View.draw ViewGroup.dispatchDraw ViewGroup.drawChild . Maybe I can make my own ViewGroup implementation custom layouts that is less wasteful on stack during..
http://stackoverflow.com/questions/1830391/rotate-mapview-in-android however the api changed the method to final so it cannot be overwritten. As a result I have tried to overwrite the dispatchDraw method like so Note compass is a boolean that if true rotate the view bearing is a float variable that has the degrees that.. if true rotate the view bearing is a float variable that has the degrees that the view should rotate protected void dispatchDraw Canvas canvas canvas.save if compass final float w this.getWidth final float h this.getHeight final float scaleFactor.. centerY h 2.0f canvas.rotate bearing centerX centerY canvas.scale scaleFactor scaleFactor centerX centerY super.dispatchDraw canvas canvas.restore android google maps map rotation android mapview share improve this question Thanks to pheelicks..
Rotate View Hierarchy 90 degrees http://stackoverflow.com/questions/3444764/rotate-view-hierarchy-90-degrees protected void onSizeChanged int w int h int oldw int oldh super.onSizeChanged w h oldw oldh @Override protected void dispatchDraw Canvas canvas canvas.rotate 270 getWidth 2 getHeight 2 This code will stretch the canvas to accommodate the new screen size... canvas.save canvas.setMatrix mForward This is the matrix we need to use for proper positioning of touch events super.dispatchDraw canvas canvas.restore @Override public boolean dispatchTouchEvent MotionEvent event final float temp mTemp temp 0 event.getX..
How to implemennt OnZoomListener on MapView http://stackoverflow.com/questions/4729255/how-to-implemennt-onzoomlistener-on-mapview zoom listener android mapview eventlistener share improve this question I had to subclass MapView and override dispatchDraw Here is the code int oldZoomLevel 1 @Override public void dispatchDraw Canvas canvas super.dispatchDraw canvas if getZoomLevel.. I had to subclass MapView and override dispatchDraw Here is the code int oldZoomLevel 1 @Override public void dispatchDraw Canvas canvas super.dispatchDraw canvas if getZoomLevel oldZoomLevel Log.d TAG ZOOOMED oldZoomLevel getZoomLevel This blog.. and override dispatchDraw Here is the code int oldZoomLevel 1 @Override public void dispatchDraw Canvas canvas super.dispatchDraw canvas if getZoomLevel oldZoomLevel Log.d TAG ZOOOMED oldZoomLevel getZoomLevel This blog helped me a lot http pa.rezendi.com..
http://stackoverflow.com/questions/6028999/android-rotating-mapview an he says I have done this in the past and it requires to create a custom ViewGroup that rotates the Canvas in the dispatchDraw method. You also need to increase the size of the MapView so that it draws enough pixels when rotated. You will also need.. dm.widthPixels dm.heightPixels public void setBearing final float pBearing mBearing pBearing @Override protected void dispatchDraw final Canvas pCanvas pCanvas.rotate mBearing getWidth 1 getHeight 1 super.dispatchDraw pCanvas @Override protected void.. @Override protected void dispatchDraw final Canvas pCanvas pCanvas.rotate mBearing getWidth 1 getHeight 1 super.dispatchDraw pCanvas @Override protected void onMeasure final int pWidthMeasureSpec final int pHeightMeasureSpec final int widthMode..
Extending RelativeLayout, and overriding dispatchDraw() to create a zoomable ViewGroup http://stackoverflow.com/questions/6378904/extending-relativelayout-and-overriding-dispatchdraw-to-create-a-zoomable-vie RelativeLayout and overriding dispatchDraw to create a zoomable ViewGroup I've seen a few people ask how to zoom an entire ViewGroup such as a RelativeLayout in one.. My idea is that any scale transformation could be applied just once to the Canvas in the overridden dispatchDraw function so that there would be absolutely no need to separately apply the zoom in any of the child views. Here's what I.. the child views. Here's what I did in my ZoomableRelativeLayout. It's just a simple extension of RelativeLayout with dispatchDraw being overridden protected void dispatchDraw Canvas canvas canvas.save Canvas.MATRIX_SAVE_FLAG canvas.scale mScaleFactor..
background scrolling with item in gridview http://stackoverflow.com/questions/6734635/background-scrolling-with-item-in-gridview bookIndex LibraryBook book this.result.getItemAt bookIndex this.selectedBook book invalidate @Override protected void dispatchDraw Canvas canvas final int count getChildCount final int top count 0 getChildAt 0 .getTop 0 final int shelfWidth mShelfWidth.. mShelfHeight Rect dest new Rect x 0 x mShelfWidth top canvas.drawBitmap background source dest null super.dispatchDraw canvas @Override public boolean onKeyDown int keyCode KeyEvent event if keyCode KeyEvent.KEYCODE_BACK this.selectedBook..
Is it possible to mask a View in android? http://stackoverflow.com/questions/7559171/is-it-possible-to-mask-a-view-in-android path new Path path.addRoundRect new RectF 0 0 getWidth getHeight 10 10 Direction.CW ...... @Override protected void dispatchDraw Canvas canvas canvas.clipPath path super.dispatchDraw canvas this will draw your view only in the boundaries set by path...
Multi-layered ExpandableListView http://stackoverflow.com/questions/8293538/multi-layered-expandablelistview professional of designing your own Views ViewGroups from the scratch I mean you understand methods requestLayout dispatchDraw and so on then write your own GrandExpandableListAdapter with 3 levels. Medium solution use ExpandableListAdapter for first..
ListView random IndexOutOfBoundsException on Froyo http://stackoverflow.com/questions/8431342/listview-random-indexoutofboundsexception-on-froyo HeaderViewListAdapter.java 16 4 16783 AndroidRuntime E at android.widget.ListView.dispatchDrawWithExcessScroll_Default ListView.java 3 288 16783 AndroidRuntime E at android.widget.ListView.dispatchDraw ListView.java.. ListView.java 3 288 16783 AndroidRuntime E at android.widget.ListView.dispatchDraw ListView.java 3029 16783 AndroidRuntime E at android.view.View.draw View.java 6743 16783 AndroidRuntime E at android.widget.AbsListView.draw.. E at android.view.ViewGroup.drawChild ViewGroup.java 1640 16783 AndroidRuntime E at android.view.ViewGroup.dispatchDraw ViewGroup.java 1367 16783 AndroidRuntime E at android.view.View.draw View.java 6743 16783 AndroidRuntime E at android.view.ViewGroup.drawChild..
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