What I have is multiple buttons. Using if-else statements, I download a file to that corresponding button. Now, I also define what class to open via intent in the if-else statement. I need to have it so that it will begin downloading the file and then start a new activity. I used to do this with an AsyncTask, and start the new intent in the onPostExecute, but I decided it's better to use DownloadManager. So, you may be confused. So I'll explain through my code...
So, here I'm setting it all up:
BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
long downloadId = intent.getLongExtra(
DownloadManager.EXTRA_DOWNLOAD_ID, 0);
Query query = new Query();
query.setFilterById(enqueue);
Cursor c = dm.query(query);
if (c.moveToFirst()) {
int columnIndex = c
.getColumnIndex(DownloadManager.COLUMN_STATUS);
if (DownloadManager.STATUS_SUCCESSFUL == c
.getInt(columnIndex)) {
String uriString = c
.getString(c
.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
}
}
}
}
};
registerReceiver(receiver, new IntentFilter(
DownloadManager.ACTION_DOWNLOAD_COMPLETE));
Ok. Now, in my if-else I declare the url to download, as well as setting a string equal to a class, and another string equal to the output file:
if (andy != null){
className = "com.cydeon.plasmamodz.Softkeys";
fileName = "batterymod.zip";
dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
Request req = new Request(
Uri.parse("https://dl.dropbox.com/s/gfukrwqy4xqrnj9/Android.zip"));
req.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS,
fileName);
enqueue = dm.enqueue(req);
}
Ok. So all works good. Now, my showDownload:
public void showDownload(View view) {
Intent i = new Intent();
i.setAction(DownloadManager.ACTION_VIEW_DOWNLOADS);
startActivity(i);
Good. Now, it downloads. So, now that's it's downloading, I need to start a new activity. And, I've researched and tried some stuff, but nothing works. As you saw, I already set a class inside the string. I have this code which I used in the onPostExecute, so I know it works fine:
try {
Intent openNewIntent = new Intent(Bmod.this, Class.forName(className) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
So, I'll repeat what I want. I want to download a file, and then, after executing the download, start a new activity. Any help is greatly appreciated. Thanks!
Edit - Here's an updated code:
public void showDownload(View view) {
Context context = getApplicationContext();
CharSequence text = "Download complete";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
try {
Intent openNewIntent = new Intent(Bmod.this, Class.forName(className) );
startActivity( openNewIntent );
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
将startActivity()调用放入广播接收器的onReceive()中,以便在通知接收器下载完成时开始活动。
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.