java - 针对 Android 11 (Api 30) 重命名视频/图像

Question

我很难简单地重命名由应用程序创建但被放入文档文件夹的文件。
编辑:
碰巧视频不是由应用程序创建的，而是由应用程序重命名的。用户在开始时手动将视频放入文档文件夹中。我的错。
这是我的代码:

public static boolean renameVideoFile(Context c, File from, File to) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
        try {
            Uri fromUri = FileProvider.getUriForFile(c, c.getPackageName() + ".provider", new File(FileUtils.getVideosDir(), from.getName()));
            ContentResolver contentResolver = c.getContentResolver();
            ContentValues contentValues = new ContentValues();

            contentValues.put(MediaStore.Files.FileColumns.IS_PENDING, 1);
            contentResolver.update(fromUri, contentValues, null, null);
            contentValues.clear();
            contentValues.put(MediaStore.Files.FileColumns.DISPLAY_NAME, to.getName());
            contentValues.put(MediaStore.Files.FileColumns.IS_PENDING, 0);
            contentResolver.update(fromUri, contentValues, null, null);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    } else {
        if (from.renameTo(to)) {
            removeMedia(c, from);
            addMedia(c, to);
            return true;
        } else {
            return false;
        }
    }
}

我经历了一些错误，但我的最后一个错误是:
java.lang.UnsupportedOperationException:没有外部更新
这是 FileProvider 的内部问题
在 androidx.core.content.FileProvider.update(FileProvider.java:523)
编辑#2
这里还有我在 list 中的提供者声明:

 <provider
        android:name="androidx.core.content.FileProvider"
        android:authorities="${applicationId}.provider"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/file_paths">
        </meta-data>
    </provider>

这是我的路径声明。同样，这不会导致保存问题:

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-files-path
    name="internal_images"
    path="files/Pictures" />
<external-files-path
    name="internal_images_alternate"
    path="Pictures" />
<external-path
    name="external"
    path="." />
<external-files-path
    name="external_files"
    path="." />
<cache-path
    name="cache"
    path="." />
<external-cache-path
    name="external_cache"
    path="." />
<files-path
    name="files"
    path="." />
</paths>

Answer 1

编辑:我选择的外部文件夹是文档文件夹仅供引用
所以我终于让它工作了。这是重命名视频的代码(它可能不是最好的，但可以解决问题!)

private static void tryAddVideosToMediaStore(Activity context) {
    List<File> files = MediaUtils.getVideoFilesFromDirectory();
    for (File file : files) {
        try {
            Uri fromUri = FileProvider.getUriForFile(context, context.getPackageName() + ".provider", file);

            if (getRealPathFromURI(context, fromUri) == null) {

                String nameWoExtension = MediaUtils.getNameWithoutStatus(file.getAbsolutePath());
                ContentValues values = new ContentValues(3);
                values.put(MediaStore.Video.Media.TITLE, nameWoExtension);
                values.put(MediaStore.Video.Media.MIME_TYPE, "video/mp4");
                values.put(MediaStore.Video.Media.DATA, file.getAbsolutePath());
                context.getContentResolver().insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, values);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

public static String getRealPathFromURI(Context context, Uri contentUri) {
    Cursor cursor = null;
    try {
        String[] proj = {MediaStore.Images.Media.DATA};
        cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    } catch(Exception e) {
        return null;
    }finally {
        if (cursor != null) {
            cursor.close();
        }
    }
}

然后调用方法

public static String getVideoNameFromPath(String path) {
    return path.substring(path.lastIndexOf("/") + 1, path.indexOf(".mp4"));
}

public static boolean renameVideoFile(MainActivityViewModel viewModel, SharedPreferenceHelper sharedPreferenceHelper, Activity c, File from, File to) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
        tryAddVideosToMediaStore(c);
        Uri fromUri = MediaUtils.getVideoUriFromFS(c, from);
        try {
            ContentResolver contentResolver = c.getContentResolver();
            ContentValues contentValues = new ContentValues();

            contentValues.put(MediaStore.Files.FileColumns.IS_PENDING, 1);
            contentResolver.update(fromUri, contentValues, null, null);
            contentValues.clear();
            contentValues.put(MediaStore.Files.FileColumns.DISPLAY_NAME, to.getName());
            contentValues.put(MediaStore.Files.FileColumns.IS_PENDING, 0);
            contentResolver.update(fromUri, contentValues, null, null);
            return true;
        } catch (Exception securityException) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                sharedPreferenceHelper.get().edit().putString("from", from.getAbsolutePath()).putString("to", to.getAbsolutePath()).apply();
                RecoverableSecurityException recoverableSecurityException;
                viewModel.setContentUri(fromUri);

                if (securityException instanceof RecoverableSecurityException) {
                    recoverableSecurityException =
                            (RecoverableSecurityException) securityException;
                } else {
                    requestVideoWritePermissions(c, Uri.parse(MediaStore.Video.Media.EXTERNAL_CONTENT_URI + "/" + MediaUtils.getVideoId(c, from)));
                    return false;
                }
                IntentSender intentSender = recoverableSecurityException.getUserAction()
                        .getActionIntent().getIntentSender();

                try {
                    c.startIntentSenderForResult(intentSender, 55,
                            null, 0, 0, 0);
                } catch (Exception e) {
                    e.printStackTrace();
                    return false;
                }
            } else {
                throw new RuntimeException(
                        securityException.getMessage(), securityException);
            }
        }
        return false;
    } else {
        if (from.renameTo(to)) {
            removeMedia(c, from);
            addMedia(c, to);
            return true;
        } else {
            return false;
        }
    }
}


public static Uri getVideoUriFromFS(Context c, File file) {
    long id = getFilePathToMediaID(file, c);
    Uri fromUri = ContentUris.withAppendedId( MediaStore.Video.Media.EXTERNAL_CONTENT_URI,id);
    return fromUri;
}



public static long getFilePathToMediaID(File videoPath, Context context)
{
    Uri mainUri;
    Cursor cursor1 = context.getContentResolver().query(
            MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
            new String[]{MediaStore.Video.Media._ID},
            MediaStore.Video.Media.DATA + "=? ",
            new String[]{videoPath.getAbsolutePath()}, null);
    long id = 0;
    if (cursor1 != null && cursor1.moveToFirst()) {

        id = cursor1.getLong(cursor1.getColumnIndex(MediaStore.MediaColumns._ID));
        cursor1.close();
    }
    return id;
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 55) { //rename video request code
        if (resultCode == RESULT_OK) {
            //update UI
            String from = presenter.getFromFilePath();
            String to = presenter.getToFilePath();
            if (from != null && to != null) {
                Uri fromUri = MediaUtils.getVideoUriFromFS(this, new File(from));
                ContentResolver contentResolver = getContentResolver();
                    ContentValues contentValues = new ContentValues();

                    contentValues.put(MediaStore.Files.FileColumns.IS_PENDING, 1);
                    contentResolver.update(fromUri, contentValues, null, null);
                    contentValues.clear();
                    contentValues.put(MediaStore.Files.FileColumns.DISPLAY_NAME, new File(to).getName());
                    contentValues.put(MediaStore.Files.FileColumns.IS_PENDING, 0);
                    contentResolver.update(fromUri, contentValues, null, null);
                    //update UI
            }
        }
    }
}

如果我忘记了什么，请告诉我，我会在这里发布。确实花了几个小时的搜索才能找到这个解决方案。我对谷歌引入的简单性和复杂性感到非常不安。
编辑:我想我忘记了这个非常重要的方法

public static boolean requestVideoWritePermissions(Activity activity, Uri fromUri) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {

        boolean hasPermission = true;
        if (activity.checkUriPermission(fromUri, Binder.getCallingPid(), Binder.getCallingUid(),
                Intent.FLAG_GRANT_WRITE_URI_PERMISSION) != PackageManager.PERMISSION_GRANTED) {
            hasPermission = false;
        }

        List<Uri> uriList = new ArrayList<>();
        uriList.add(fromUri);

        if (!hasPermission) {
            PendingIntent pi = MediaStore.createWriteRequest(activity.getContentResolver(), uriList);
            try {
                activity.startIntentSenderForResult(pi.getIntentSender(), 55, null, 0, 0, 0);
            } catch (IntentSender.SendIntentException e) {
                e.printStackTrace();
            }
            return false;
        }
        return true;
    }
    return true;
}

我还应该提到每个视频都是这样的提示。用户选择是否允许您覆盖每个不是最佳的视频。我希望我可以只做一个外部访问的整个文件夹，但我猜这不会发生在范围存储更改中。