public static final String TEMP_PHOTO_FILE_NAME = "temp_photo.jpg";

	private static String mSdRootPath = Environment.getExternalStorageDirectory().getPath();

	  /**

	     * 删除SD卡或者手机的缓存图片和文件夹

	     */

	    public void deleteFile() {

	    	Log.i("INFO", mSdRootPath+"/"+TEMP_PHOTO_FILE_NAME+"========================");

	        File dirFile = new File(mSdRootPath+"/"+TEMP_PHOTO_FILE_NAME);

	       if(! dirFile.exists()){

	           return;

	        }

	        if (dirFile.isDirectory()) {

	            String[] children = dirFile.list();

	            for (int i = 0; i < children.length; i++) {

	                new File(dirFile, children[i]).delete();

	            }

	        }  

	        dirFile.delete();

	   }  



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