xinyu391的专栏

java.lang.RuntimeException: Canvas: trying to draw too large bitmap.

Mark核心要素，使用系统的ScaleGestureDetector,和GestureDetector，对于边界处理，对4条边，依次处理，超过边界，就反向移动相应距离。onTouchEent事件处理，优先处理多指事件View {onDraw(canvas ){canvas.save();canvas.concat(displayMatrix);// draw bitmapcanvas.drawB...