将bitmap保存本地

/** 保存方法 */ public void saveBitmap() {  Log.e(TAG, "保存图片");  File f = new File("/sdcard/namecard/", picName);  if (f.exists()) {   f.delete();  }  try {   FileOutputStream out = new FileOutputStream(f);   bm.compress(Bitmap.CompressFormat.PNG, 90, out);   out.flush();   out.close();   Log.i(TAG, "已经保存");  } catch (FileNotFoundException e) {   // TODO Auto-generated catch block   e.printStackTrace();  } catch (IOException e) {   // TODO Auto-generated catch block   e.printStackTrace();  } }