Summary of the problem that the album does not refresh after Android saves videos and pictures

Recently, I encountered saving photos and videos in the project. They have been saved locally but cannot be found in the album and project. Here is a brief summary.

After saving locally, you need to send the file to the local or broadcast to refresh the album

1. Send the photo to the album

// Insert the file into the system gallery 
/** 
     * @param context
     * @param targetFile photo file to save
     * @param path The path address of the photo to be saved
      */ 
    public  static  void addMediaStore(Context context, File targetFile, String path) {
        ContentResolver resolver = context.getContentResolver();
        ContentValues newValues = new ContentValues(5);
        newValues.put(MediaStore.Images.Media.DISPLAY_NAME, targetFile.getName());
        newValues.put(MediaStore.Images.Media.DATA, targetFile.getPath());
        newValues.put(MediaStore.Images.Media.DATE_MODIFIED, System.currentTimeMillis() / 1000);
        newValues.put(MediaStore.Images.Media.SIZE, targetFile.length());
        newValues.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
        resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, newValues);
        MediaScannerConnection.scanFile(context, new String[]{path}, null , null ); // Refresh the album 
    }

sample code

   addMediaStore(chatActivity, mFile, mFile.getAbsolutePath()); 
(context, file, and file path)

2. Send the video to the album

// For non-system video resource folder 
public  static  void insertIntoMediaStore(Context context, boolean isVideo, File saveFile, long createTime) {
        ContentResolver mContentResolver = context.getContentResolver();
        if (createTime == 0)
            createTime = System.currentTimeMillis();
        ContentValues values = new ContentValues();
        values.put(MediaStore.MediaColumns.TITLE, saveFile.getName());
        values.put(MediaStore.MediaColumns.DISPLAY_NAME, saveFile.getName());
        // The value is the same, but it is still treated with constants 
        values.put(isVideo ? MediaStore.Video.VideoColumns.DATE_TAKEN
                : MediaStore.Images.ImageColumns.DATE_TAKEN, createTime);
        values.put(MediaStore.MediaColumns.DATE_MODIFIED, System.currentTimeMillis());
        values.put(MediaStore.MediaColumns.DATE_ADDED, System.currentTimeMillis());
        if (!isVideo)
            values.put(MediaStore.Images.ImageColumns.ORIENTATION, 0);
        values.put(MediaStore.MediaColumns.DATA, saveFile.getAbsolutePath());
        values.put(MediaStore.MediaColumns.SIZE, saveFile.length());
        values.put(MediaStore.MediaColumns.MIME_TYPE, isVideo ? getVideoMimeType下面的方法/*"video/3gp"*/ : "image/jpeg");
        //插入
        mContentResolver.insert(isVideo
                ? MediaStore.Video.Media.EXTERNAL_CONTENT_URI
                : MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
    }

// here is a sample code for a call (context, is it video, file, time)

insertIntoMediaStore(chatActivity,true,dest,0); 
This can also be used as an album to refresh the gallery 

. Here we need a related method to get the video format

// Get the mine_type of the video, temporarily only support mp4, 3gp 
    private  static String getVideoMimeType(String path) {
        String lowerPath = path.toLowerCase();
        if (lowerPath.endsWith("mp4") || lowerPath.endsWith("mpeg4")) {
            return "video/mp4";
        } else if (lowerPath.endsWith("3gp")) {
            return "video/3gp";
        }
        return "video/mp4";
    }

3. Generic method (send broadcast to notify album refresh)

 /**
     * Only need to scan for system folders, no need to insert content provider, otherwise it will be repeated
     *
     * @param context context
     * @param filePath 文件路径
     */private static void scanFile(Context context, String filePath) {
        if (!checkFile(filePath))
            return;
        Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        intent.setData(Uri.fromFile(new File(filePath)));
        context.sendBroadcast (intent);
    }

Invocation example (context, and path to file)

scanFile(chatActivity,/*FileUtil.getCacheFilePath(video_file_name)*/ dest.getAbsolutePath());

To sum up, here are all systematic methods. After a little modification according to the project, you can directly call and modify it according to your own needs.

 

 

leileitua