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2014/10/16 ¤W¤È 08:22:18
android Programming Glossary: rect.leftAndroid Custom Layout - onDraw() never gets called http://stackoverflow.com/questions/13056331/android-custom-layout-ondraw-never-gets-called 7 w 8 7 h 8 float theta float 2 Math.PI getChildCount for int i 0 i getChildCount i View v getChildAt i w rect.right rect.left 2 h rect.bottom rect.top 2 float half Math.max w h 2 float centerX rect.centerX w FloatMath.cos theta float centerY rect.centerY..
Zxing Camera in Portrait mode on Android http://stackoverflow.com/questions/16252791/zxing-camera-in-portrait-mode-on-android .buildLuminanceSource rotatedData width height Step 2 Modify getFramingRectInPreview . CameraManager.java rect.left rect.left cameraResolution.y screenResolution.x rect.right rect.right cameraResolution.y screenResolution.x rect.top rect.top.. .buildLuminanceSource rotatedData width height Step 2 Modify getFramingRectInPreview . CameraManager.java rect.left rect.left cameraResolution.y screenResolution.x rect.right rect.right cameraResolution.y screenResolution.x rect.top rect.top cameraResolution.x..
Get Canvas coordinates after scaling up/down or dragging in android http://stackoverflow.com/questions/7524843/get-canvas-coordinates-after-scaling-up-down-or-dragging-in-android Done it finally by myself. Draw everything by applying this formula to px py coordinates float px ev.getX mScaleFactor rect.left float py ev.getY mScaleFactor rect.top rect canvas.getClipBounds Get them in on Draw function and apply above formula before..
Rotating Image on A canvas in android http://stackoverflow.com/questions/8712652/rotating-image-on-a-canvas-in-android 90 while angle 0 angle angle 360 Rect rect canvas.getClipBounds int height rect.bottom rect.top int width rect.right rect.left int left rect.left int top rect.top if height width top height width 2 height width if width height left width height 2.. angle angle 360 Rect rect canvas.getClipBounds int height rect.bottom rect.top int width rect.right rect.left int left rect.left int top rect.top if height width top height width 2 height width if width height left width height 2 width height float..
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