android中給圖片打浮水印

woff

1. /**
   
2. *
   
3. * @param src 原圖片
   
4. * @param watermark 要打的浮水印圖片
   
5. * @return Bitmap 打好浮水印的圖片
   
6. */
   
7. private Bitmap createBitmap(Bitmap src,Bitmap watermark){
   
8. if(src == null){
   
9. return null;
   
10. }
    
11. int srcWidth = src.getWidth();
    
12. int srcHeight = src.getHeight();
    
13. 
    
14. int waterWidth = watermark.getWidth();
    
15. int waterHeight = watermark.getHeight();
    
16. //create the new blank bitmap
    
17. Bitmap newb = Bitmap.createBitmap(srcWidth,srcHeight,Config.ARGB_8888);//創建一個新的和src長度寬度一樣的點陣圖
    
18. Canvas cv = new Canvas(newb);
    
19. cv.drawBitmap(src, 0, 0,null);//在0,0座標開始畫入src
    
20. /*Paint paint = new Paint();
    
21. paint.setColor(Color.RED);*/
    
22. if(watermark != null){
    
23. cv.drawBitmap(watermark, srcWidth-waterWidth,srcHeight-waterHeight, null);//在src的右下解畫入浮水印圖片
    
24. //cv.drawText("HELLO",srcWidth-waterWidth,srcHeight-waterHeight, paint);//這是畫入浮水印文字，在畫文字時，需要指定paint
    
25. }
    
26. cv.save(Canvas.ALL_SAVE_FLAG);//保存
    
27. cv.restore();//存儲
    
28. return newb;
    
29. }

複製代碼