Android酱油笔记之自定义View

public class GameTitle extends View{
	//自定义的类，另外实现
	private Game game;
	
	public GameTitle(Context context,AttributeSet attrs) {
		super(context);
		//获取单例模式
		game = Game.getInstance();
	}


	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		//获取屏幕宽高
		int width = game.getScreenWidth();
		int height = game.getScreenHeight()/6;
		//设置自定义view视图的宽高
		setMeasuredDimension(width, height);
	}
	
	@Override
	protected void onDraw(Canvas canvas) {
		//画图
		Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.title);
		int bLeft = getWidth()/2-bitmap.getWidth()/2;
		int bTop = 0;
		canvas.drawBitmap(bitmap,bLeft, bTop, null);
		super.onDraw(canvas);
	}
}