IDownloaderClient onServiceConnected未被调用

Question

我正在尝试让我的应用程序在启动时下载扩展文件。我跟踪了Android指南，有一段时间它将开始下载，然后以98%的速度停止，告诉我它无法验证该文件，但文件实际上就在那里。今天，我没有修改任何代码，它甚至没有尝试下载。我在整个类中都放置了断点，而且它永远不会到达来自onServiceConnected的IDownloaderClient方法。

在onCreate的末尾

initializeDownloadUI();

if (!expansionFilesDelivered()) {
    try {
        final Intent launchIntent = MainActivity.this.getIntent();
        final Intent intentToLaunchThisActivityFromNotification = new Intent(MainActivity.this, MainActivity.this.getClass());

        intentToLaunchThisActivityFromNotification.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intentToLaunchThisActivityFromNotification.setAction(launchIntent.getAction());

        if (launchIntent.getCategories() != null) {
            for (String category : launchIntent.getCategories())
                intentToLaunchThisActivityFromNotification.addCategory(category);
        }

        // Build PendingIntent used to open this activity from Notification.
        final PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, intentToLaunchThisActivityFromNotification, PendingIntent.FLAG_UPDATE_CURRENT);

        // Request to start the download.
        final int startResult = DownloaderClientMarshaller.startDownloadServiceIfRequired(this, pendingIntent, DownloaderServiceHelper.class);

        if (startResult != DownloaderClientMarshaller.NO_DOWNLOAD_REQUIRED) {
            initializeDownloadUI();
            return;
        }
    } catch (PackageManager.NameNotFoundException exc) {
        Log.wtf("MainActivity", "Cannot find own package.");
        exc.printStackTrace();
    }
} else validateXAPKZipFiles();

我的initializeDownloadUI()是

mDownloaderClientStub = DownloaderClientMarshaller.CreateStub(this, DownloaderService.class);
setContentView(R.layout.main);

mPB = (ProgressBar) findViewById(R.id.progressBar);
mStatusText = (TextView) findViewById(R.id.statusText);
mProgressFraction = (TextView) findViewById(R.id.progressAsFraction);
mProgressPercent = (TextView) findViewById(R.id.progressAsPercentage);
mAverageSpeed = (TextView) findViewById(R.id.progressAverageSpeed);
mTimeRemaining = (TextView) findViewById(R.id.progressTimeRemaining);
mDashboard = findViewById(R.id.downloaderDashboard);
mCellMessage = findViewById(R.id.approveCellular);
mPauseButton = (Button) findViewById(R.id.pauseButton);
mWiFiSettingButton = (Button) findViewById(R.id.wifiSettingsButton);

mPauseButton.setOnClickListener(this);
mWiFiSettingButton.setOnClickListener(this);
(findViewById(R.id.resumeOverCellular)).setOnClickListener(this);

另外，我的onResume是

if (null != mDownloaderClientStub) {
    mDownloaderClientStub.connect(this);
}

super.onResume();

它像预期的那样通过onCreate，但是由于某种原因它没有连接到服务。就像我说的，这几天前起作用了，我什么也没改变，但现在它不起作用了。

有什么帮助吗？

Answer 1

您的服务类名似乎是DownloaderServiceHelper，因此您需要更改initializeDownloadUi方法中的代码

从…

mDownloaderClientStub = DownloaderClientMarshaller.CreateStub(this, DownloaderService.class);

至

mDownloaderClientStub = DownloaderClientMarshaller.CreateStub(this, DownloaderServiceHelper.class);