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2014/10/16 ¤W¤È 08:19:44
android Programming Glossary: mscaledetector.getfocusxZoom and Panning ImageView Android http://stackoverflow.com/questions/12169905/zoom-and-panning-imageview-android ev.getPointerId 0 break case MotionEvent.ACTION_POINTER_1_DOWN if mScaleDetector.isInProgress final float gx mScaleDetector.getFocusX final float gy mScaleDetector.getFocusY mLastGestureX gx mLastGestureY gy break case MotionEvent.ACTION_MOVE Only.. final float dy y mLastTouchY mPosX dx mPosY dy invalidate mLastTouchX x mLastTouchY y else final float gx mScaleDetector.getFocusX final float gy mScaleDetector.getFocusY final float gdx gx mLastGestureX final float gdy gy mLastGestureY mPosX gdx.. canvas canvas.save canvas.translate mPosX mPosY if mScaleDetector.isInProgress canvas.scale mScaleFactor mScaleFactor mScaleDetector.getFocusX mScaleDetector.getFocusY else canvas.scale mScaleFactor mScaleFactor super.onDraw canvas canvas.restore private class..
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