public void photo() {
		String state = Environment.getExternalStorageState(); 
		if (state.equals(Environment.MEDIA_MOUNTED)) {
			//判斷資料夾是否存在，我的資料夾路徑是SDPATH = Environment.getExternalStorageDirectory().getAbsolutePath()+ "/Photo_LJ/";
			File file = new File(FileUtils.SDPATH);
			if(!file.exists()){
				file.mkdir();
			}
			Intent openCameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//MediaStore.ACTION_IMAGE_CAPTURE
			Uri imageUri = Uri.fromFile(new File(FileUtils.SDPATH,fileName,儲存圖片名稱));
			//指定照片儲存路徑（SD卡），image.jpg為一個臨時檔案，每次拍照後這個圖片都會被替換
			openCameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
			startActivityForResult(openCameraIntent, TAKE_PICTURE);
		} else {  
			Toast.makeText(getApplicationContext(), "請確認已經插入SD卡", Toast.LENGTH_LONG).show();  
		}  

	}