如何在sd card中保存文件，在camera 類中創(chuàng)建了一個圖片，然后創(chuàng)建一個新的目錄來保存它。它創(chuàng)建了文件夾，但這個圖片為什么不在文件夾中？if (items[which].equals("Picture")) {                             Intent cameraIntent = new Intent(                                     MediaStore.ACTION_IMAGE_CAPTURE);                             startActivityForResult(cameraIntent,                                     PICTURE_ACTIVITY);                             File imagesFolder = new File(Environment                                     .getExternalStorageDirectory(),                                     "SeccyPhotos");                             imagesFolder.mkdirs(); // <----                             File image = new File(imagesFolder, "image_001.jpg");                             Uri uriSavedImage = Uri.fromFile(image);                             cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,                                     uriSavedImage);                         }我調用了camera類，這樣的話之后拍攝的照片就應該保存在文件夾中。請問下：視頻和照相機相同嗎？Intent cameraIntent = new Intent(                                 MediaStore.ACTION_VIDEO_CAPTURE);                         startActivityForResult(cameraIntent,                                 PICTURE_ACTIVITY);                         File videosFolder = new File(Environment                                 .getExternalStorageDirectory(),                                 "cangryVideos");                         videosFolder.mkdirs(); // <----                         File video = new File(videosFolder, "Video_001.3gp");                         Uri uriSavedvideo = Uri.fromFile(video);                         cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,                                 uriSavedvideo);                         startActivityForResult(cameraIntent,                                 PICTURE_ACTIVITY);