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2014/10/16 ¤W¤È 08:12:44
android Programming Glossary: drawnHow to handle screen orientation change when progress dialog and background thread active? http://stackoverflow.com/questions/1111980/how-to-handle-screen-orientation-change-when-progress-dialog-and-background-thre thread is still going and the UI is in partially drawn state. Need to kill the whole app before it starts working again...
Why retrieving Google Directions for Android using KML data is not working anymore? [duplicate] http://stackoverflow.com/questions/11745314/why-retrieving-google-directions-for-android-using-kml-data-is-not-working-anymo projection and routePoints. @param mv MapView the path is drawn to. private void redrawPath final MapView mv final Projection..
How ListView's recycling mechanism works http://stackoverflow.com/questions/11945563/how-listviews-recycling-mechanism-works convetView is not null its because your new item 8 will be drawn using convertview i.e basically it take the item1 view from.. get some child for measuring the height of the views to be drawn in list view and can cause some unexpected behaviour like returning..
Vertical (rotated) label in Android http://stackoverflow.com/questions/1258275/vertical-rotated-label-in-android top to bottom. If you set android gravity bottom then it's drawn from bottom to top. Technically it fools underlying TextView..
Focusable EditText inside ListView http://stackoverflow.com/questions/2679948/focusable-edittext-inside-listview experience. 2. setItemsCanFocus false selector is always drawn in non touch mode and EditText can never get focus even if you.. I use beforeDescendants because the selector will only be drawn when the ListView itself not a child has focus so the default..
How to draw an overlay on a SurfaceView used by Camera on Android? http://stackoverflow.com/questions/2933882/how-to-draw-an-overlay-on-a-surfaceview-used-by-camera-on-android method which is invoked each time a new frame is drawn into the SurfaceView in order to execute the invalidate method.. void draw Canvas canvas super.draw canvas nothing gets drawn Paint p new Paint Color.RED canvas.drawText PREVIEW canvas.getWidth..
How to create EditText with rounded corners? http://stackoverflow.com/questions/3646415/how-to-create-edittext-with-rounded-corners resource that specifies the way the EditText will be drawn xml version 1.0 encoding utf 8 res drawable rounded_edittext.xml..
http://stackoverflow.com/questions/4381033/multi-gradient-shapes you cannot measure the TextView until after it has been drawn. I'm not quite sure yet how you can accomplish this...but manually..
Bad image quality after resizing/scaling bitmap http://stackoverflow.com/questions/4821488/bad-image-quality-after-resizing-scaling-bitmap storing my images as bitmaps so that they can be quickly drawn and redrawn for animation . My problem is that no matter how.. images as bitmaps so that they can be quickly drawn and redrawn for animation . My problem is that no matter how I try and scale.. causing the problem because the images look perfect when drawn without resizing. I have worked through every solution described..
How can I use the animation framework inside the canvas? http://stackoverflow.com/questions/4938822/how-can-i-use-the-animation-framework-inside-the-canvas to a bitmap. In onDraw in a custom view only one frame is drawn at the time until next invalidate is called which means that..
Android MapActivity : Couldn't get connection factory client http://stackoverflow.com/questions/6006835/android-mapactivity-couldnt-get-connection-factory-client or boundCenterBottom on the drawable. else it will not be drawn. be also careful if you use different markers in the same overlay..
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 would be applied to the Canvas prior to graphics being drawn. However before doing that I have tried to be clever ha usually.. invalidate is being called then it's possibly being redrawn individually by the system rather than being passed a Canvas.. But oddly the elements of the child views that are redrawn on the screen are to the correct zoom scale. It's almost as..
How can you tell when a layout has been drawn? http://stackoverflow.com/questions/7733813/how-can-you-tell-when-a-layout-has-been-drawn can you tell when a layout has been drawn I have a custom view that draws a scrollable bitmap to the.. onCreate and onResume functions the Layout has not been drawn yet and so layout.getMeasuredHeight returns 0. As a workaround.. i can trim the time before I end up before the laout gets drawn. What I want to know is how can I detect when a layout gets..
How to handle screen orientation change when progress dialog and background thread active? http://stackoverflow.com/questions/1111980/how-to-handle-screen-orientation-change-when-progress-dialog-and-background-thre but that just prevents an immediate crash. The background thread is still going and the UI is in partially drawn state. Need to kill the whole app before it starts working again. android android activity android dialog share improve..
Why retrieving Google Directions for Android using KML data is not working anymore? [duplicate] http://stackoverflow.com/questions/11745314/why-retrieving-google-directions-for-android-using-kml-data-is-not-working-anymo Recalculate the path accounting for changes to the projection and routePoints. @param mv MapView the path is drawn to. private void redrawPath final MapView mv final Projection prj mv.getProjection path.rewind final Iterator GeoPoint..
How ListView's recycling mechanism works http://stackoverflow.com/questions/11945563/how-listviews-recycling-mechanism-works in your recycler in your Logcat you will notice that convetView is not null its because your new item 8 will be drawn using convertview i.e basically it take the item1 view from the recycler and inflater in place of item 8 and you can observe.. to wrap_content as getView will force your adapter to get some child for measuring the height of the views to be drawn in list view and can cause some unexpected behaviour like returning convertview even the list is not scrolled.always use..
Vertical (rotated) label in Android http://stackoverflow.com/questions/1258275/vertical-rotated-label-in-android super.draw canvas By default rotated text is from top to bottom. If you set android gravity bottom then it's drawn from bottom to top. Technically it fools underlying TextView to think that it's normal rotation swapping width height in..
Focusable EditText inside ListView http://stackoverflow.com/questions/2679948/focusable-edittext-inside-listview is selected both of which can give the user an unexpected experience. 2. setItemsCanFocus false selector is always drawn in non touch mode and EditText can never get focus even if you tap on it. To make matters worse calling editTextView.requestFocus.. fill_parent android descendantFocusability beforeDescendants I use beforeDescendants because the selector will only be drawn when the ListView itself not a child has focus so the default behavior needs to be that the ListView takes focus first and..
How to draw an overlay on a SurfaceView used by Camera on Android? http://stackoverflow.com/questions/2933882/how-to-draw-an-overlay-on-a-surfaceview-used-by-camera-on-android a SurfaceView . What I'm trying to do is using the onPreviewFrame method which is invoked each time a new frame is drawn into the SurfaceView in order to execute the invalidate method which is supposed to invoke the onDraw method. In fact the.. parameters camera.startPreview @Override public void draw Canvas canvas super.draw canvas nothing gets drawn Paint p new Paint Color.RED canvas.drawText PREVIEW canvas.getWidth 2 canvas.getHeight 2 p android camera surfaceview..
How to create EditText with rounded corners? http://stackoverflow.com/questions/3646415/how-to-create-edittext-with-rounded-corners way than the one written by CommonsWare. Just create a drawable resource that specifies the way the EditText will be drawn xml version 1.0 encoding utf 8 res drawable rounded_edittext.xml shape xmlns android http schemas.android.com apk res android..
http://stackoverflow.com/questions/4381033/multi-gradient-shapes ld However This leads to yet another annoying problem in that you cannot measure the TextView until after it has been drawn. I'm not quite sure yet how you can accomplish this...but manually inserting a number for topInset does work. I lied one..
Bad image quality after resizing/scaling bitmap http://stackoverflow.com/questions/4821488/bad-image-quality-after-resizing-scaling-bitmap cards to be different sizes in different circumstances. I am storing my images as bitmaps so that they can be quickly drawn and redrawn for animation . My problem is that no matter how I try and scale my images whether through a matrix.postScale.. different sizes in different circumstances. I am storing my images as bitmaps so that they can be quickly drawn and redrawn for animation . My problem is that no matter how I try and scale my images whether through a matrix.postScale a matrix.preScale.. out pixelated and blurry. I know that its the scaling thats causing the problem because the images look perfect when drawn without resizing. I have worked through every solution described in these two threads android quality of the images resized..
How can I use the animation framework inside the canvas? http://stackoverflow.com/questions/4938822/how-can-i-use-the-animation-framework-inside-the-canvas surface for drawing which is either part of a View or linked to a bitmap. In onDraw in a custom view only one frame is drawn at the time until next invalidate is called which means that you have to draw your animation frame by frame. Here is an..
Android MapActivity : Couldn't get connection factory client http://stackoverflow.com/questions/6006835/android-mapactivity-couldnt-get-connection-factory-client i want specially point out that you must call boundCenter or boundCenterBottom on the drawable. else it will not be drawn. be also careful if you use different markers in the same overlay with overlayItem.setMarker that u call it there too. 3...
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 in each of the child Views' onDraw methods that scale factor would be applied to the Canvas prior to graphics being drawn. However before doing that I have tried to be clever ha usually a bad idea and extend RelativeLayout into a class called.. My initial thinking was that when an individual child view's invalidate is being called then it's possibly being redrawn individually by the system rather than being passed a Canvas from the parent RelativeLayout's dispatchDraw meaning that.. view ends up refreshing itself without the zoom scale applied. But oddly the elements of the child views that are redrawn on the screen are to the correct zoom scale. It's almost as if the area that the system decides to actually update in the..
How can you tell when a layout has been drawn? http://stackoverflow.com/questions/7733813/how-can-you-tell-when-a-layout-has-been-drawn can you tell when a layout has been drawn I have a custom view that draws a scrollable bitmap to the screen. In order to initialize it i need to pass in the size.. the size in pixels of the parent layout object. But during the onCreate and onResume functions the Layout has not been drawn yet and so layout.getMeasuredHeight returns 0. As a workaround i have added a handler to wait one second and then measure... This works but its sloppy and I have no idea how much i can trim the time before I end up before the laout gets drawn. What I want to know is how can I detect when a layout gets drawn Is there an event or callback android android layout..
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