接收器下载 - 安卓 [英] Receiver for download -- Android
问题描述
我在做研究哦如何触发我的应用程序,如果任何的下载发生在任何应用程序中。我有code段,它使用下载管理器,并且会通知我,只有当我的应用程序必须执行任何下载,但而我从来没有找到的任何下载发生在我的移动,那是否要通知我的应用程序的任何解决方案。 PL建议我,如果这将是可能的。谢谢
i am doing research oh how to trigger my application if any of download happens in any of application. I have code snippet which uses DownloadManager and that will notify me only when my application had perform any of download, but whereas i never find any solution on which any of download happens in my mobile, that has to notify my application. Pl suggest me if this will be possible. Thanks
推荐答案
1 - 你必须做的服务以下载背景中的任何文件。
1- You have to make Service for Download any file in Background.
public class DownloadService extends Service {
private static final String TAG = "DownloadService";
public static final int UPDATE_PROGRESS = 8344;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (intent == null) {
} else {
final String urlToDownload = intent.getStringExtra("url");
final ResultReceiver receiver = (ResultReceiver) intent
.getParcelableExtra("receiver");
new Thread(new Runnable() {
@Override
public void run() {
try {
URL url = new URL(urlToDownload);
URLConnection connection = url.openConnection();
connection.connect();
int fileLength = connection.getContentLength();
// download the file
InputStream input = new BufferedInputStream(url
.openStream());
String localPath = Environment
.getExternalStorageDirectory()
.getAbsoluteFile()
+ File.separator
+ Constant.ROOT_FOLDER_NAME
+ File.separator
+ Constant.FOLDER_IMAGE
+ File.separator
+ urlToDownload.substring(urlToDownload
.lastIndexOf('/') + 1);
AppLog.Log(TAG, "Path :: " + localPath);
OutputStream output = new FileOutputStream(localPath);
byte data[] = new byte[1024];
long total = 0;
int count;
while ((count = input.read(data)) != -1) {
total += count;
// publishing the progress....
Bundle resultData = new Bundle();
resultData.putInt("progress",
(int) (total * 100 / fileLength));
receiver.send(UPDATE_PROGRESS, resultData);
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
} catch (IOException e) {
AppLog.Log(TAG, "********* EXCEPTION *****");
e.printStackTrace();
}
Bundle resultData = new Bundle();
resultData.putInt("progress", 100);
receiver.send(UPDATE_PROGRESS, resultData);
stopSelf();
}
}).start();
}
return START_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
2 - 那么你必须做出 ResultReceiver 得到通知,而下载完毕。
2- Then you have to Make ResultReceiver to get notifying while download is completed.
private class DownloadReceiver extends ResultReceiver {
public DownloadReceiver(Handler handler) {
super(handler);
}
@Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
super.onReceiveResult(resultCode, resultData);
if (resultCode == DownloadService.UPDATE_PROGRESS) {
int progress = resultData.getInt("progress");
if (progress == 100) {
// Download Complete
}
}
}
}
3呼叫下载服务
3- Call Download Service
Intent intent = new Intent(context, DownloadService.class);
intent.putExtra("url", "url to download");
intent.putExtra("receiver", new DownloadReceiver(new Handler()));
startService(intent);
- 在变化的Manifest.xml
添加标签的清单文件中Application标签:
Add tag in manifest file inside Application tag:
<application >
------
------
<service android:name="PACKAGENAME.DownloadService" />
------
------
</application>
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