Android Price 5_ Custom broadcast update the ListView adapter download management via broadcast

1, in processing the download management, the service runs in the background, after the download is completed to update the ListView list button, the "Download" to "open" such a feature.

Write a static inner class in activity that inherits the broadcast. Where the value of the property Text_button is the text that the button displays. Update the list data display with madapter.notifydatasetchanged ().

     Public Static classDownloadfinishreceiverextendsbroadcastreceiver{ Public Static FinalString download_receiver= "com. Downloadfinishreceiver "; @Override Public voidOnReceive (Context context, Intent Intent) {Try {                if(Intent.getaction (). Equals (Download_receiver)) {//Pass theString url = intent.getstringextra ("url");  for(Apply apply:mapplies) {if(Apply.getdownload_backup (). Equals (URL)) {Apply.settext_button (Open);                }} madapter.notifydatasetchanged (); }            } Catch(Exception e) {e.printstacktrace (); }        }    }

2. Registering and destroying the broadcast in the back-Office services service

Privatedownloadfinishreceiver Finishreceiver; Public voidonCreate () {System.out.println ("Create service"); Intentfilter Intentfilter=NewIntentfilter (Downloadfinishreceiver.download_receiver); Finishreceiver=NewDownloadfinishreceiver ();        Registerreceiver (Finishreceiver, Intentfilter); Super. OnCreate (); }     Public voidOnDestroy () {unregisterreceiver (finishreceiver); Super. OnDestroy (); }

3. Once the download is complete, send the broadcast.

New Intent (Downloadfinishreceiver.download_receiver); Intent.putextra ("url", "http://www.baidu.com/pic/ Qqq.png "); Sendbroadcast (intent) ;

Android Price 5_ Custom broadcast update the ListView adapter download management via broadcast