从我的应用程序中，我正在下载一些音乐文件并将其保存在文件夹中。在通知面板中显示下载进度。下载完成后，如果点击通知，我的Android设备应该直接浏览到目标文件夹，类似于＆＃34;转到文件夹＆＃34;任何下载完成后在PC上
我是从下面的代码尝试过的，但是它没有用。它只是打开应用程序。
public class Temp extends Activity {
String[] link;
String[] items;
String song_link;
String song_name;
int song_index;
int link_index;
String url_link;
Exception error;
private ProgressBar mProgress;
long total = 0;
boolean downloadStatus = false;
ProgressDialog progressBar;
private Handler progressBarHandler = new Handler();
int progressBarStatus = 0;
Uri selectedUri;
Intent intent;
PendingIntent resultPendingIntent;
NotificationCompat.Builder mBuilder=
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("My notification")
.setContentText("Downloading");
NotificationManager mNotificationManager;
int id=1;
private class DownloadFilesTask extends AsyncTask<String, Integer, Long> {
protected Long doInBackground(String... urls) {
mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// mProgress = (ProgressBar) findViewById(R.id.progress_bar);
url_link = urls[0];
try {
/* runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(getApplicationContext(),"link: "+url_link,Toast.LENGTH_SHORT).show();
}
});*/
int count;
URL url = new URL(url_link);
URLConnection conexion = url.openConnection();
conexion.connect();
// this will be useful so that you can show a typical 0-100% progress bar
final int lenghtOfFile = conexion.getContentLength();
// Download the file
InputStream input = new BufferedInputStream(url.openStream());
// String name = "first.mp3";
File folder = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_MUSIC), "Vaishnav Songs");
if (!folder.mkdirs()) {
Log.e(DOWNLOAD_SERVICE, "Directory not created");
}
File filename = new File(folder,song_name);
OutputStream output = null;
output = new BufferedOutputStream(new FileOutputStream(filename));
byte data[] = new byte[1024];
mBuilder.setContentTitle(song_name);
int percentage;
id = song_index*10 + link_index;
while ((count = input.read(data)) != -1) {
total += count;
// publishing the progress....
// publishProgress((int)(total*100/lenghtOfFile) );
percentage = (int)(total*100/lenghtOfFile) ;
if(percentage%5 ==0){
new Thread(new Runnable() {
public void run() {
mBuilder.setProgress(100, (int)total*100/lenghtOfFile, false);
// Displays the progress bar for the first time.
mNotificationManager.notify(id, mBuilder.build());
}
}).start();
}
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
mBuilder.setContentIntent(resultPendingIntent);
new Thread(new Runnable() {
public void run() {
mBuilder.setContentText("Download complete")
// Removes the progress bar
.setProgress(100,100,false);
mNotificationManager.notify(id, mBuilder.build());
}
}).start();
}
catch (Exception e) {
error = e;
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(getApplicationContext(),"Error: "+error,Toast.LENGTH_SHORT).show();
}
});
}
// Escape early if cancel() is called
// if (isCancelled()) break;
return total;
}
protected void onProgressUpdate(Integer... progress) {
progressBarStatus = progress[0];
}
protected void onPostExecute(Long result) {
/* Toast.makeText(getApplicationContext(),"Downloaded "+result+" bytes",Toast.LENGTH_SHORT).show();*/
Intent intent = getIntent();
finish();
//startActivity(intent);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
selectedUri = Uri.parse(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_MUSIC) + "/"+"Vaishnav Songs"+"/");
intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(selectedUri, "resource/folder");
resultPendingIntent =
PendingIntent.getActivity(
this,
0,
intent,
PendingIntent.FLAG_UPDATE_CURRENT
);
song_name = (String) getIntent().getExtras().getString("songName");
song_link = (String) getIntent().getExtras().getString("songLink");
song_index = getIntent().getIntExtra("songIndex",0);
link_index = getIntent().getIntExtra("position",0);
Toast.makeText(getApplicationContext(),"Download started. Check progress in notification panel",Toast.LENGTH_SHORT).show();
//new DownloadFilesTask().execute(song_link);
DownloadFilesTask task = new DownloadFilesTask();
task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,song_link);
finish();
}
}
答案 0 :(得分：0)
发现此https://developer.android.com/reference/android/app/Notification.Builder.html
您可以尝试将setContentIntent(PendingIntent intent)添加到您的通知中，同时执行文件管理器打开操作。