Android之旋转button视图

也许有时候我们的项目需要旋转按钮本身，而不是文本或按钮上的标签旋转。下面写一个小方法去实现旋转45°：

public class MyButton extends Button { public float degrees; public float sWidth; public float sHeight; public MyButton(Context context) {     super(context);     // TODO Auto-generated constructor stub } @Override protected void onDraw(Canvas canvas) {     // TODO Auto-generated method stub     canvas.save();     canvas.rotate(45.0f);     super.onDraw(canvas);     canvas.restore(); } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) {     // TODO Auto-generated method stub     super.onSizeChanged(w, h, oldw, oldh);     sWidth=w;     sHeight=h; } }