我有以下代码可以成功下载扩展文件,但我不知道在哪里添加我的意图,以便expansion file is downloaded
我可以start my activity.
请帮忙。
try {
Intent launchIntent = ExpansionFilesActivity.this.getIntent();
Intent intentToLaunchThisActivityFromNotification = new Intent(ExpansionFilesActivity.this,
ExpansionFilesActivity.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
PendingIntent pendingIntent = PendingIntent.getActivity(ExpansionFilesActivity.this, 0,
intentToLaunchThisActivityFromNotification, PendingIntent.FLAG_UPDATE_CURRENT);
// Request to start the download
int startResult = DownloaderClientMarshaller.startDownloadServiceIfRequired(this, pendingIntent, SampleDownloaderService.class);
if (startResult != DownloaderClientMarshaller.NO_DOWNLOAD_REQUIRED) {
// The DownloaderService has started downloading the
// files,
// show progress
initializeDownloadUI();
return;
} // otherwise, download not needed so we fall through to
// starting the movie
} catch (NameNotFoundException e) {
Log.e(LOG_TAG, "Cannot find own package! MAYDAY!");
e.printStackTrace();
}
}
答案 0 :(得分:1)
Android开发者指南中的示例如下:
@Override
public void onCreate(Bundle savedInstanceState) {
// Check if expansion files are available before going any further
if (!expansionFilesDelivered()) {
// Build an Intent to start this activity from the Notification
Intent notifierIntent = new Intent(this, MainActivity.getClass());
notifierIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
Intent.FLAG_ACTIVITY_CLEAR_TOP);
...
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
notifierIntent, PendingIntent.FLAG_UPDATE_CURRENT);
// Start the download service (if required)
int startResult = DownloaderClientMarshaller.startDownloadServiceIfRequired(this,
pendingIntent, SampleDownloaderService.class);
// If download has started, initialize this activity to show download progress
if (startResult != DownloaderClientMarshaller.NO_DOWNLOAD_REQUIRED) {
// This is where you do set up to display the download progress (next step)
...
return;
} // If the download wasn't necessary, fall through to start the app
}
startApp(); // Expansion files are available, start the app
}
首先你看它是否可用。如果没有在服务中下载并在完成时向用户发出有关数据可用的通知。
答案 1 :(得分:0)
我正在探索另一种设计:
当newstate == STATE_COMPLETED时,从public void onDownloadStateChanged(int newState)
内调用startApp()。出于某些原因,我调用了两次onDownloadState()。我添加了一个标志downloadStateCompleted以避免双重调用startApp()。
清除STATE_COMPLETED上的通知。
用户的体验可能更好,因为下载完成后应用程序继续(进入startApp())。但我不确定这种方法是否与下载库的设计和使用方式相悖。在扩展文件文档中,我没有看到任何从onDownloadStateChanged
内调用startApp()的迹象。