drawable沒法旋轉，得用bitmap
Matrix matrix = new Matrix();
??????? matrix.setRotate(-360 *mmProgress,baseBitmap.getWidth()/2,baseBitmap.getHeight()/2);//步驟2
??????? System.out.println("TouchPullViewc:"+360 *mProgress );

??????? matrix.postTranslate(mCirclePointX-baseBitmap.getWidth()/2,mCirclePointY-baseBitmap.getHeight()/2);//步驟3? 屏幕的中心點
??????? canvas.drawBitmap(baseBitmap, matrix, null);//步驟4

Drawable drawable=mContent;
if (drawable!=null){
? ?canvas.save();

? ?//剪切矩形區(qū)域
? ?canvas.clipRect(drawable.getBounds());
? ?canvas.rotate(mRotate,mCirclePointX,mCirclePointY);
? ?drawable.draw(canvas);
}

canvas的rotate(float,float,float)方法是旋轉畫布?

第一個參數(shù)：旋轉角度（0~無窮）

第二個參數(shù)：旋轉中心點x坐標

第三個參數(shù)：旋轉中心點y坐標