Android Open Source - android-token-sharing Upload Task

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License

The source code is released under:

Copyright 2011 SoundCloud Ltd., Jan Berkel. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions ...

Java Source Code

package com.soundcloud.android.examples.token;
//from   w  w w .  j  av  a 2 s  . co  m
import static com.soundcloud.android.examples.token.TokenSharing.TAG;

import com.soundcloud.api.Endpoints;
import com.soundcloud.api.Params;
import com.soundcloud.api.Request;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.Toast;

import java.io.File;
import java.io.IOException;
import java.lang.ref.WeakReference;


/**
 * An AsyncTask which shows how to upload a track to SoundCloud using the
 * <a href="https://github.com/soundcloud/java-api-wrapper">Java API wrapper</a>.
 */
public class UploadTask extends AsyncTask<File, Long, HttpResponse> {
    private Exception mException;
    private ProgressDialog mProgress;
    private WeakReference<Activity> mContext;

    public UploadTask(Activity context) {
       mContext = new WeakReference<Activity>(context);
    }

    @Override
    protected HttpResponse doInBackground(File... params) {
        final File file = params[0];

        try {
            return Api.wrapper.post(Request.to(Endpoints.TRACKS)
                    .withFile(Params.Track.ASSET_DATA, file)
                    .add(Params.Track.TITLE, file.getName())
                    .add(Params.Track.SHARING, Params.Track.PRIVATE)
                    .setProgressListener(new Request.TransferProgressListener() {
                        @Override
                        public void transferred(long l) throws IOException {
                            if (isCancelled()) throw new IOException("canceled");
                            publishProgress(l, file.length());
                        }
                    }));

        } catch (IOException e) {
            Log.w(TAG, "error", e);
            mException = e;
            return null;
        }
    }

   public void attachContext(Activity context) {
        if (getStatus() != Status.FINISHED) {
            mContext = new WeakReference<Activity>(context);
            onPreExecute();
        }
    }

    @Override
    protected void onPreExecute() {
        mProgress = new ProgressDialog(mContext.get());
        mProgress.setTitle(R.string.uploading);
        mProgress.setIndeterminate(false);
        mProgress.setCancelable(true);
        mProgress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        mProgress.setOnCancelListener(new ProgressDialog.OnCancelListener() {
            @Override public void onCancel(DialogInterface dialog) {
                cancel(true);
                dialog.dismiss();

                Context ctxt = mContext.get();
                if (ctxt != null) {
                    Toast.makeText(ctxt, R.string.canceled, Toast.LENGTH_SHORT).show();
                }
            }
        });
    }

    @Override
    protected void onProgressUpdate(Long... values) {
        if (!mProgress.isShowing()) mProgress.show();

        mProgress.setProgress(values[0].intValue());
        mProgress.setMax(values[1].intValue());
    }

    @Override
    protected void onPostExecute(HttpResponse response) {
        Activity activity = mContext.get();
        if (activity != null) {
            if (!activity.isFinishing()) mProgress.dismiss();

            if (response == null) {
                Toast.makeText(activity, "Error during upload: " + mException.getMessage(),
                        Toast.LENGTH_LONG).show();

            } else if (response.getStatusLine().getStatusCode() == HttpStatus.SC_CREATED) {
                Toast.makeText(activity, "File has been uploaded",
                        Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(activity, "Error uploading file: " + response.getStatusLine(),
                        Toast.LENGTH_LONG).show();
            }
        }
    }
}

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