private void drawNewBitmap(ImageView imageView, String str) {

          Bitmap photo = BitmapFactory.decodeResource(this.getResources(), R.drawable.background);

          int width = photo.getWidth();

          int hight = photo.getHeight();

          //建立一个空的Bitmap

          Bitmap icon = Bitmap.createBitmap(width, hight, Bitmap.Config.ARGB_8888);

          // 初始化画布绘制的图像到icon上

          Canvas canvas = new Canvas(icon);

          // 建立画笔

          Paint photoPaint = new Paint();

          // 获取更清晰的图像采样，防抖动

          photoPaint.setDither(true);

          // 过滤一下，抗剧齿

          photoPaint.setFilterBitmap(true);

          Rect src = new Rect(, , photo.getWidth(), photo.getHeight());// 创建一个指定的新矩形的坐标

          Rect dst = new Rect(, , width, hight);// 创建一个指定的新矩形的坐标

          canvas.drawBitmap(photo, src, dst, photoPaint);// 将photo 缩放或则扩大到dst使用的填充区photoPaint

　　　　　　//自定义的画笔

          TextPaint textPaint=myTextPaint();

  　　　　 drawText(canvas,textPaint,str,,hight/,width);

          canvas.save(Canvas.ALL_SAVE_FLAG);

          canvas.restore();

          imageView.setImageBitmap(icon);

          saveMyBitmap(this,icon);

    }

//设置画笔的字体和颜色

    public TextPaint myTextPaint(){

         TextPaint textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);// 设置画笔

         int TEXT_SIZE = Math.round( * getRATIO());

         textPaint.setTextSize(TEXT_SIZE);// 字体大小

              textPaint.setTypeface(Typeface.DEFAULT_BOLD);// 采用默认的宽度

              textPaint.setColor(Color.argb(,,,));// 采用的颜色

              return textPaint;

//写入文字，自动换行的方法

    public void drawText(Canvas canvas, TextPaint Paint,String textString,int x,int y,int width) {

        //int Width=Math.round(width* getRATIO());

        int start_x=Math.round(x * getRATIO());

        int start_y=Math.round(y * getRATIO());

        StaticLayout staticLayout=new StaticLayout(textString, Paint, width-start_x*,

                             Alignment.ALIGN_NORMAL, 1.5f, 0.0f, false);  

        //绘制的位置

        canvas.translate(start_x, start_y);

        staticLayout.draw(canvas);

    }