我试图使用MediaStore
. 这在 Android 10 API 29 上运行良好,但不适用于以前的 Android 版本。我附上了 Android 10 API 29 上工作示例的屏幕截图。
引起:android.database.sqlite.SQLiteException:没有这样的列:bucket_display_name(代码1 SQLITE_ERROR):,编译时:SELECT bucket_display_name,bucket_id FROM audio ORDER BY date_added ASC
日志猫。
Caused by: android.database.sqlite.SQLiteException: no such column: bucket_display_name (code 1 SQLITE_ERROR): , while compiling: SELECT bucket_display_name, bucket_id FROM audio ORDER BY date_added ASC
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:179)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
at android.content.ContentProviderProxy.query(ContentProviderNative.java:418)
at android.content.ContentResolver.query(ContentResolver.java:802)
at android.content.ContentResolver.query(ContentResolver.java:752)
at android.content.ContentResolver.query(ContentResolver.java:710)
at com.aisar.mediaplayer.fragments.AudioFolderFragment$AsyncVideoFolderLoader.doInBackground(AudioFolderFragment.java:148)
at com.aisar.mediaplayer.fragments.AudioFolderFragment$AsyncVideoFolderLoader.doInBackground(AudioFolderFragment.java:130)
at android.os.AsyncTask$2.call(AsyncTask.java:333)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:764)
代码:
class AsyncVideoFolderLoader extends AsyncTask<String, String, List<ModelAudioFolder>> {
private String sortBy;
public AsyncVideoFolderLoader(String sortBy) {
this.sortBy = sortBy;
}
@Override
protected List<ModelAudioFolder> doInBackground(String... strings) {
List<ModelAudioFolder> videoItems = new ArrayList<>();
videoItems.clear();
final HashMap<String, ModelAudioFolder> output = new HashMap<>();
final Uri contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
final String[] projection = {MediaStore.Audio.Media.BUCKET_DISPLAY_NAME, MediaStore.Audio.Media.BUCKET_ID};
try (final Cursor cursor = getActivity().getContentResolver().query(
contentUri,
projection,
null,
null,
"" + sortBy)) {
if ((cursor != null) && (cursor.moveToFirst())) {
final int columnBucketName = cursor.getColumnIndex(MediaStore.Audio.Media.BUCKET_DISPLAY_NAME);
final int columnBucketId = cursor.getColumnIndex(MediaStore.Audio.Media.BUCKET_ID);
do {
final String bucketName = cursor.getString(columnBucketName);
final String bucketId = cursor.getString(columnBucketId);
if (!output.containsKey(bucketId)) {
final int count = getCount(contentUri, bucketId);
final ModelAudioFolder item = new ModelAudioFolder(
"" + bucketId,
"" + bucketName,
"",
"" + getPath(bucketId),
"" + count
);
output.put(bucketId, item);
videoItems.add(item);
}
} while (cursor.moveToNext());
}
}
return videoItems;
}
private int getCount(@NonNull final Uri contentUri, @NonNull final String bucketId) {
try (final Cursor cursor = getActivity().getContentResolver().query(contentUri,
null, MediaStore.Audio.Media.BUCKET_ID + "=?", new String[]{bucketId}, null)) {
return ((cursor == null) || (cursor.moveToFirst() == false)) ? 0 : cursor.getCount();
}
}
private String getPath(String BUCKET_ID) {
String path = "";
String selection = null;
String[] projection = {
MediaStore.Audio.Media.DATA,
MediaStore.Audio.Media.BUCKET_ID
};
Cursor cursor = getActivity().getContentResolver().query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
projection,
selection,
null,
null);
while (cursor.moveToNext()) {
if (BUCKET_ID.equals(cursor.getString(1))) {
//add only those videos that are in selected/chosen folder
path = cursor.getString(0);
}
}
return path;
}
@Override
protected void onPostExecute(List<ModelAudioFolder> audioFolderList) {
super.onPostExecute(audioFolderList);
if (audioFolderList.size() <= 0) {
noFoldersRl.setVisibility(View.VISIBLE);
foldersRl.setVisibility(View.GONE);
} else {
noFoldersRl.setVisibility(View.GONE);
foldersRl.setVisibility(View.VISIBLE);
}
Log.d("FoldersSize", "onPostExecute: " + audioFolderList.size());
adapterAudioFolder = new AdapterAudioFolder(getActivity(), audioFolderList, dashboardActivity);
foldersRv.setAdapter(adapterAudioFolder);
}
}
...