2015-10-30-05-Android Drawable/bitmap/图片文件转换

Drawable转bitmap，bitmap转png文件的方法

public static Bitmap drawableToBitmap(Drawable drawable) {  
              Bitmap bitmap = Bitmap  
                           . createBitmap(  
                                         drawable.getIntrinsicWidth(),  
                                         drawable.getIntrinsicHeight(),  
                                         drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888  
                                                       : Bitmap.Config.RGB_565 );  
              Canvas canvas = new Canvas(bitmap);  
               // canvas.setBitmap(bitmap); 
              drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),  
                           drawable.getIntrinsicHeight());  
              drawable.draw(canvas);  
               return bitmap;  
        }  

        public static void saveMyBitmap (String bitName, Bitmap bmp) throws IOException {  
              File f = new File("/data/data/com.test.yyxz/databases/" + bitName + ".png");  
              f.createNewFile();  
              FileOutputStream fOut = null;  
               try {  
                     fOut = new FileOutputStream(f);  
              } catch (FileNotFoundException e) {  
                     e.printStackTrace();  
              }  
              bmp.compress(Bitmap.CompressFormat. PNG, 100, fOut);  
               try {  
                     fOut.flush();  
              } catch (IOException e) {  
                     e.printStackTrace();  
              }  
               try {  
                     fOut.close();  
              } catch (IOException e) {  
                     e.printStackTrace();  
              }  
       }