android 11及以上保存图片视频到相册

Android 10之前版本主要步骤

1. 请求读写权限
2. 图片/视频下载到/storage/emulated/0/Android/data/包名/xxx
3. 复制到系统相册目录下
4. 扫描媒体库

Android 10及以上版本主要步骤

1. 请求读写权限
2. 图片/视频下载到/storage/emulated/0/Android/data/包名/xxx
3. 创建ContentValues，写入要保存的信息
4. 调用ContentResolver插入ContentValues到相册中，此时会返回新创建的相册uri
5. 将原先的文件复制到该uri中（android11及以上必须这么干）
6. 发送广播，扫描媒体库

关键代码：

public class SaveUtils {    private static final String TAG = "SaveUtils";        public static boolean saveImgFileToAlbum(Context context, String imageFilePath) {        Log.d(TAG, "saveImgToAlbum() imageFile = [" + imageFilePath + "]");        try {            Bitmap bitmap = BitmapFactory.decodeFile(imageFilePath);            return saveBitmapToAlbum(context, bitmap);        } catch (Exception e) {            e.printStackTrace();            return false;        }    }        public static boolean saveBitmapToAlbum(Context context, Bitmap bitmap) {        if (bitmap == null) return false;        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {            return saveBitmapToAlbumBeforeQ(context, bitmap);        } else {            return saveBitmapToAlbumAfterQ(context, bitmap);        }    }    @RequiresApi(api = Build.VERSION_CODES.Q)    private static boolean saveBitmapToAlbumAfterQ(Context context, Bitmap bitmap) {        Uri contentUri;        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {            contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;        } else {            contentUri = MediaStore.Images.Media.INTERNAL_CONTENT_URI;        }        ContentValues contentValues = getImageContentValues(context);        Uri uri = context.getContentResolver().insert(contentUri, contentValues);        if (uri == null) {            return false;        }        OutputStream os = null;        try {            os = context.getContentResolver().openOutputStream(uri);            bitmap.compress(Bitmap.CompressFormat.JPEG, 50, os);//            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {//                Files.copy(bitmapFile.toPath(), os);//            }            contentValues.clear();            contentValues.put(MediaStore.MediaColumns.IS_PENDING, 0);            context.getContentResolver().update(uri, contentValues, null, null);            return true;        } catch (Exception e) {            context.getContentResolver().delete(uri, null, null);            e.printStackTrace();            return false;        } finally {            try {                if (os != null) {                    os.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }    }    private static boolean saveBitmapToAlbumBeforeQ(Context context, Bitmap bitmap) {        File picDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);        File destFile = new File(picDir, context.getPackageName() + File.separator + System.currentTimeMillis() + ".jpg");//            FileUtils.copy(imageFile, destFile.getAbsolutePath());        OutputStream os = null;        boolean result = false;        try {            if (!destFile.exists()) {                destFile.getParentFile().mkdirs();                destFile.createNewFile();            }            os = new BufferedOutputStream(new FileOutputStream(destFile));            result = bitmap.compress(Bitmap.CompressFormat.JPEG, 50, os);            if (!bitmap.isRecycled()) bitmap.recycle();        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                if (os != null) {                    os.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }        MediaScannerConnection.scanFile(                context,                new String[]{destFile.getAbsolutePath()},                new String[]{"image    @RequiresApi(api = Build.VERSION_CODES.Q)    public static ContentValues getImageContentValues(Context context) {        ContentValues contentValues = new ContentValues();        contentValues.put(MediaStore.Images.Media.DISPLAY_NAME, System.currentTimeMillis() + ".jpg");        contentValues.put(MediaStore.Images.Media.MIME_TYPE, "image    public static boolean saveVideoToAlbum(Context context, String videoFile) {        Log.d(TAG, "saveVideoToAlbum() videoFile = [" + videoFile + "]");        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {            return saveVideoToAlbumBeforeQ(context, videoFile);        } else {            return saveVideoToAlbumAfterQ(context, videoFile);        }    }    private static boolean saveVideoToAlbumAfterQ(Context context, String videoFile) {        try {            ContentResolver contentResolver = context.getContentResolver();            File tempFile = new File(videoFile);            ContentValues contentValues = getVideoContentValues(context, tempFile, System.currentTimeMillis());            Uri uri = contentResolver.insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, contentValues);            copyFileAfterQ(context, contentResolver, tempFile, uri);            contentValues.clear();            contentValues.put(MediaStore.MediaColumns.IS_PENDING, 0);            context.getContentResolver().update(uri, contentValues, null, null);            context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, uri));            return true;        } catch (Exception e) {            e.printStackTrace();            return false;        }    }    private static boolean saveVideoToAlbumBeforeQ(Context context, String videoFile) {        File picDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);        File tempFile = new File(videoFile);        File destFile = new File(picDir, context.getPackageName() + File.separator + tempFile.getName());        FileInputStream ins = null;        BufferedOutputStream ous = null;        try {            ins = new FileInputStream(tempFile);            ous = new BufferedOutputStream(new FileOutputStream(destFile));            long nread = 0L;            byte[] buf = new byte[1024];            int n;            while ((n = ins.read(buf)) > 0) {                ous.write(buf, 0, n);                nread += n;            }            MediaScannerConnection.scanFile(                    context,                    new String[]{destFile.getAbsolutePath()},                    new String[]{"video    public static ContentValues getVideoContentValues(Context context, File paramFile, long timestamp) {        ContentValues localContentValues = new ContentValues();        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {            localContentValues.put(MediaStore.Video.Media.RELATIVE_PATH, Environment.DIRECTORY_DCIM                    + File.separator + context.getPackageName());        }        localContentValues.put(MediaStore.Video.Media.TITLE, paramFile.getName());        localContentValues.put(MediaStore.Video.Media.DISPLAY_NAME, paramFile.getName());        localContentValues.put(MediaStore.Video.Media.MIME_TYPE, "video/mp4");        localContentValues.put(MediaStore.Video.Media.DATE_TAKEN, timestamp);        localContentValues.put(MediaStore.Video.Media.DATE_MODIFIED, timestamp);        localContentValues.put(MediaStore.Video.Media.DATE_ADDED, timestamp);        localContentValues.put(MediaStore.Video.Media.SIZE, paramFile.length());        return localContentValues;    }}

来源地址：https://blog.csdn.net/yzwfeng/article/details/127768671