我有以下问题:每次使用DownloadManager下载文件时,文件都会下载两次(以“文件名.扩展名”和“文件名-1.扩展名”的方式保存)。这是我的代码:
public void download() {
Request request = new Request(Uri.parse(_wrapper.getURL()));
request.setTitle(getFileName(_wrapper.getURL()));
request.setVisibleInDownloadsUi(false);
request.setDestinationInExternalFilesDir(_context, null, "/" + getFileName(_wrapper.getURL()));
_downloadID = _downloadManager.enqueue(request);
}
public BroadcastReceiver getDownloadFinishedBroadcastReceiver() {
BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context pContext, Intent pIntent) {
String action = pIntent.getAction();
if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
Query query = new Query();
query.setFilterById(_downloadID);
Cursor cursor = _downloadManager.query(query);
if (cursor.moveToFirst()) {
File file = new File(ScruloidConstants.APPLICATION_DIRECTORY);
int status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));
if (status == DownloadManager.STATUS_SUCCESSFUL) {
String path = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
_wrapper.setFilePath(path);
_wrapper.setLastDownloaded(new Date());
if (_listener != null) {
_listener.onDownloadProjectTaskFinished(new TaskResult<ProjectWrapper>(_wrapper));
}
}
else if (status == DownloadManager.STATUS_FAILED) {
int reason = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_REASON));
DownloadFailedException ex = new DownloadFailedException(reason);
if (_listener != null) {
_listener.onDownloadProjectTaskFinished(new TaskResult<ProjectWrapper>(ex));
}
}
}
}
}
};
return receiver;
}
ProjectWrapper _wrapper
是一个简单的类,它只存储数据,不执行逻辑操作。 _listener
在回调方法上显示一个小的 Toast 消息。我对我的应用程序进行了调试,确保 download()
方法只被调用一次。希望您能帮助我找到错误。