Android自定义SurfaceView实现画板源码下载

最近写了一个Android画板功能的简单实现例子、通过继承SurfaceView的一个自定义View来实现的、实现方法也比较简单、以下是效果图

MySurfaceView代码

public class MyView extends SurfaceView 
		implements Callback,OnTouchListener{

	private Paint p = new Paint();
	private Path path = new Path();
	
	public MyView(Context context, AttributeSet attrs) {
		super(context, attrs);
		getHolder().addCallback(this);
		p.setColor(Color.RED);
		p.setTextSize(10);
		p.setAntiAlias(true);
		p.setStyle(Style.STROKE);
		setOnTouchListener(this);
		
	}
	public void draw(){
		Canvas canvas = getHolder().lockCanvas();
		canvas.drawColor(Color.WHITE);
		canvas.drawPath(path, p);
		getHolder().unlockCanvasAndPost(canvas);
	}
	
	
	public void clear(){
		path.reset();
		draw();
	}

	@Override
	public void surfaceCreated(SurfaceHolder holder) {
		draw();
	}

	@Override
	public void surfaceChanged(SurfaceHolder holder, 
		int format, int width, int height) {
		
	}

	@Override
	public void surfaceDestroyed(SurfaceHolder holder) {
		
	}
	@Override
	public boolean onTouch(View v, MotionEvent event) {
		
		switch (event.getAction()) {
		case MotionEvent.ACTION_DOWN:
			path.moveTo(event.getX(), event.getY());
			draw();
			break;

		case MotionEvent.ACTION_MOVE:
			path.lineTo(event.getX(), event.getY());
			draw();
			break;
		}
		
		return true;
	}

}

最后给大家贴上例子的源代码、大家可以下载看看、集成到自己的项目中去哈

源代码下载链接: http://dwtedx.com/download.html?bdkey=s/1o6iHZWu 密码: o1ln