Android之旋轉button視圖

也許有時候我們的項目需要旋轉按鈕本身，而不是文本或按鈕上的標籤旋轉。下面寫一個小方法去實現旋轉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; } }