团队博客

还是老问题……

Paint paint = null;             //定义画笔
    Bitmap originalBitmap = null;   //存放原始图像
    Bitmap new1_Bitmap = null;      //存放从原始图像复制的位图图像
    Bitmap new2_Bitmap = null;      //存放处理后的图像
    float startX = 0,startY = 0;    //画线的起点坐标
    float clickX = 0,clickY = 0;    //画线的终点坐标
    boolean isMove = true;      //设置是否画线的标记
    boolean isClear = false;        //设置是否清除涂鸦的标记
    int color = Color.GREEN;        //设置画笔的颜色（绿色）
    float strokeWidth = 2.0f;       //设置画笔的宽度

public HandWrite(Context context, AttributeSet attrs)
    {
        super(context, attrs);
        originalBitmap = BitmapFactory
                .decodeResource(getResources(), R.drawable.cy)
        .copy(Bitmap.Config.ARGB_8888,true);
        new1_Bitmap = Bitmap.createBitmap(originalBitmap);
    }

public Bitmap HandWriting(Bitmap o_Bitmap)
    {
        Canvas canvas = null;
        if(isClear) {
        canvas = new Canvas(new2_Bitmap);
    }
         else{
        canvas = new Canvas(o_Bitmap);
    }
        paint = new Paint();
        paint.setStyle(Paint.Style.STROKE);
        paint.setAntiAlias(true);
        paint.setColor(color);
        paint.setStrokeWidth(strokeWidth);
        if(isMove)
        {
            canvas.drawLine(startX, startY, clickX, clickY, paint);
        }
        startX = clickX;
        startY = clickY;
        if(isClear)
        {
            return new2_Bitmap;
        }
        return o_Bitmap;
    }

public boolean onTouchEvent(MotionEvent event)
    {
        clickX = event.getX();
        clickY = event.getY();
        if(event.getAction() == MotionEvent.ACTION_DOWN)
        {
            isMove = false;
            invalidate();
            return true;
        }
        else if(event.getAction() == MotionEvent.ACTION_MOVE)
        {
            isMove = true;
            invalidate();
            return true;
        }
        return super.onTouchEvent(event);
    }