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以下は私のコードです。曲をダウンロードしながらプロセスを表示したい。このコードはSamsungTabとGrandで機能しますが、SamsungAcePlusでは機能しません。私を助けてください。前もって感謝します。

private void Notification() {
    Intent in = new Intent(this, DownloadSong.class);

    final NotificationManager mNotifyManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
            this);
    mBuilder.setContentTitle("Picture Download")
            .setContentText("Download in progress")
            .setSmallIcon(R.drawable.ic_launcher);

    // Start a lengthy operation in a background thread
    new Thread(new Runnable() {

        @Override
        public void run() {
            int incr;
            // Do the "lengthy" operation 20 times
            for (progress = 0; progress <= 100; progress += 5) {
                // Sets the progress indicator to a max value, the
                // current completion percentage, and "determinate"
                // state
                mBuilder.setProgress(100, progress, false);
                // Displays the progress bar for the first time.
                mNotifyManager.notify(0, mBuilder.build());
                // Sleeps the thread, simulating an operation
                // that takes time
                try {
                    // Sleep for 5 seconds
                    Thread.sleep(5 * 1000);
                } catch (InterruptedException e) {
                    Log.d(TAG, "sleep failure");
                }
            }
            // When the loop is finished, updates the notification
            mBuilder.setContentText("Download complete")
            // Removes the progress bar
                    .setProgress(0, 0, false);
            mNotifyManager.notify(1001, mBuilder.build());
        }
    }
    // Starts the thread by calling the run() method in its Runnable
    ).start();
}

以下は、サービスを使用した私のダウンロードコードです。プログレスダイアログの更新と通知領域でのダウンロードを関連付けたいのですが、正しいコードを実行していますか？

public class DownloadService extends IntentService {
    String urlPath;
    int next = -1;
    private int result = Activity.RESULT_CANCELED;

    public DownloadService() {
        super("DownloadService");
    }

    // Will be called asynchronously be Android
    @Override
    protected void onHandleIntent(Intent intent) {
        Uri data = intent.getData();
        urlPath = intent.getStringExtra("urlpath");
        String fileName = data.getLastPathSegment();
        final File output = new File(Environment.getExternalStorageDirectory(),
                fileName);
        if (output.exists()) {
            output.delete();
        }

        InputStream stream = null;
        FileOutputStream fos = null;
        try {

            URL url = new URL(urlPath);
            stream = url.openConnection().getInputStream();
            InputStreamReader reader = new InputStreamReader(stream);
            fos = new FileOutputStream(output.getPath());

            while ((next = reader.read()) != -1) {
                fos.write(next);

            }
            // Sucessful finished
            result = Activity.RESULT_OK;

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (stream != null) {
                try {
                    stream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        Bundle extras = intent.getExtras();
        if (extras != null) {
            Messenger messenger = (Messenger) extras.get("MESSENGER");
            Message msg = Message.obtain();
            msg.arg1 = result;
            msg.obj = output.getAbsolutePath();



            try {
                messenger.send(msg);

            } catch (android.os.RemoteException e1) {
                Log.w(getClass().getName(), "Exception sending message", e1);
            }

        }
    }


}
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1 に答える 1

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問題はではありませんNotificationCompat.Builder。そのとIntentService。私は次byte array and DataInputStreamの代わりに使用する必要がありInputStreamました：

URL url = new URL(urlPath);
            stream = url.openConnection().getInputStream();
            InputStreamReader reader = new InputStreamReader(stream);
             dis = new DataInputStream(url.openConnection().getInputStream());
            fileData = new byte[url.openConnection().getContentLength()];
             for (int x = 0; x < fileData.length; x++) { // fill byte array with bytes from the data input stream
                    fileData[x] = dis.readByte();

                }
             dis.close();
            fos = new FileOutputStream(output.getPath());
            fos.write(fileData);
于 2013-06-13T07:29:24.573 に答える