Bitmap上写文字

标签：android   java   color   width   io   re   

public Bitmap drawTextToBitmap(Context mContext,  int resourceId,  String mText) {
    try {
         Resources resources = mContext.getResources();
            float scale = resources.getDisplayMetrics().density;
            Bitmap bitmap = BitmapFactory.decodeResource(resources, resourceId);

            android.graphics.Bitmap.Config bitmapConfig =   bitmap.getConfig();
            // set default bitmap config if none
            if(bitmapConfig == null) {
              bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888;
            }
            // resource bitmaps are imutable,
            // so we need to convert it to mutable one
            bitmap = bitmap.copy(bitmapConfig, true);

            Canvas canvas = new Canvas(bitmap);
            // new antialised Paint
            Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
            // text color - #3D3D3D
            paint.setColor(Color.rgb(110,110, 110));
            // text size in pixels
            paint.setTextSize((int) (12 * scale));
            // text shadow
            paint.setShadowLayer(1f, 0f, 1f, Color.DKGRAY);

            // draw text to the Canvas center
            Rect bounds = new Rect();
            paint.getTextBounds(mText, 0, mText.length(), bounds);
            int x = (bitmap.getWidth() - bounds.width())/6;
            int y = (bitmap.getHeight() + bounds.height())/5;

          canvas.drawText(mText, x * scale, y * scale, paint);

            return bitmap;
    } catch (Exception e) {
        // TODO: handle exception



        return null;
    }

  }

Bitmap上写文字,布布扣,bubuko.com

Bitmap上写文字

标签：android   java   color   width   io   re   

原文地址：http://blog.csdn.net/changhuiyuanh/article/details/37883573