Example usage for android.os Handler Handler

Introduction

In this page you can find the example usage for android.os Handler Handler.

Prototype

public Handler() 

Source Link

Document

Default constructor associates this handler with the Looper for the current thread.

Usage

From source file:com.mytutor.search.ImageLoader.java

public void fetchDrawableOnThread(final String urlString, final ImageView imageView) {
    if (drawableMap.containsKey(urlString)) {
        Log.d("IMG 1", "Getting Image");
        imageView.setImageDrawable(drawableMap.get(urlString));
    }/*from   w  w w. ja  v  a 2 s .  co  m*/

    final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message message) {
            imageView.setImageDrawable((Drawable) message.obj);
        }
    };

    Thread thread = new Thread() {
        @Override
        public void run() {
            //TODO : set imageView to a "pending" image
            Drawable drawable = fetchDrawable(urlString);
            Message message = handler.obtainMessage(1, drawable);
            handler.sendMessage(message);
        }
    };
    thread.start();
}

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From source file:com.example.hotelapp.DrawableManager.java

@SuppressLint("HandlerLeak")
public void fetchDrawableOnThread(final String urlString, final ImageView imageView) {
    if (drawableMap.containsKey(urlString)) {
        imageView.setImageDrawable(drawableMap.get(urlString));
    }/*from  w  w w .jav a2 s. co m*/

    final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message message) {
            imageView.setImageDrawable((Drawable) message.obj);
        }
    };

    Thread thread = new Thread() {
        @Override
        public void run() {
            //TODO : set imageView to a "pending" image
            Drawable drawable = fetchDrawable(urlString);
            Message message = handler.obtainMessage(1, drawable);
            handler.sendMessage(message);
        }
    };
    thread.start();
}

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From source file:com.oonusave.coupon.DrawableManager.java

public void fetchDrawableOnThread(final String urlString, final ImageView imageView) {
    if (drawableMap.containsKey(urlString)) {
        imageView.setImageDrawable(drawableMap.get(urlString));

        return;/*from   w ww .  jav a 2 s  . co m*/
    }

    if (urlString != null && "".equalsIgnoreCase(urlString)) {
        return;
    }

    final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message message) {
            imageView.setImageDrawable((Drawable) message.obj);
        }
    };

    Thread thread = new Thread() {
        @Override
        public void run() {
            //TODO : set imageView to a "pending" image
            Drawable drawable = fetchDrawable(urlString);
            drawableMap.put(urlString, drawable);
            Message message = handler.obtainMessage(1, drawable);
            handler.sendMessage(message);
        }
    };
    thread.start();
}

---

From source file:org.ligi.android.dubwise_uavtalk.dashboard.DownloadDashboardImagesStatusAlertDialog.java

/**
 * //from  w w  w.  j a  v  a  2  s  .c  o m
 * @param activity
 * @param autoclose - if the alert should close when connection is established
 * 
 */
public static void show(Context activity, boolean autoclose, Intent after_connection_intent) {

    LinearLayout lin = new LinearLayout(activity);
    lin.setOrientation(LinearLayout.VERTICAL);

    ScrollView sv = new ScrollView(activity);
    TextView details_text_view = new TextView(activity);

    LinearLayout lin_in_scrollview = new LinearLayout(activity);
    lin_in_scrollview.setOrientation(LinearLayout.VERTICAL);
    sv.addView(lin_in_scrollview);
    lin_in_scrollview.addView(details_text_view);

    details_text_view.setText("no text");

    ProgressBar progress = new ProgressBar(activity, null, android.R.attr.progressBarStyleHorizontal);
    progress.setMax(img_lst.length);

    lin.addView(progress);
    lin.addView(sv);

    new AlertDialog.Builder(activity).setTitle("Download Status").setView(lin)
            .setPositiveButton("OK", new DialogDiscardingOnClickListener()).show();

    class AlertDialogUpdater implements Runnable {

        private Handler h = new Handler();
        private TextView myTextView;
        private ProgressBar myProgress;

        public AlertDialogUpdater(TextView ab, ProgressBar progress) {
            myTextView = ab;
            myProgress = progress;

        }

        public void run() {

            for (int i = 0; i < img_lst.length; i++) {
                class MsgUpdater implements Runnable {

                    private int i;

                    public MsgUpdater(int i) {
                        this.i = i;
                    }

                    public void run() {
                        myProgress.setProgress(i + 1);
                        if (i != img_lst.length - 1)
                            myTextView.setText("Downloading " + img_lst[i] + ".png");
                        else
                            myTextView.setText("Ready - please restart DUBwise to apply changes!");
                    }
                }
                h.post(new MsgUpdater(i));

                try {
                    URLConnection ucon = new URL(url_lst[i]).openConnection();
                    BufferedInputStream bis = new BufferedInputStream(ucon.getInputStream());

                    ByteArrayBuffer baf = new ByteArrayBuffer(50);
                    int current = 0;
                    while ((current = bis.read()) != -1)
                        baf.append((byte) current);

                    File path = new File(
                            Environment.getExternalStorageDirectory() + "/dubwise/images/dashboard");
                    path.mkdirs();

                    FileOutputStream fos = new FileOutputStream(
                            new File(path.getAbsolutePath() + "/" + img_lst[i] + ".png"));
                    fos.write(baf.toByteArray());
                    fos.close();
                } catch (Exception e) {
                }

                try {
                    Thread.sleep(199);
                } catch (InterruptedException e) {
                }

            }
        }
    }

    new Thread(new AlertDialogUpdater(details_text_view, progress)).start();
}

---

From source file:com.facebook.android.friendsmash.ScoreboardFragment.java

@Override
public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    application = (FriendSmashApplication) getActivity().getApplication();

    // Instantiate the handler
    uiHandler = new Handler();

    setRetainInstance(true);/*from w ww. j  av  a  2  s.  co m*/
}

---

From source file:net.cs76.projects.student10792819.DrawableManager.java

/**
 * Fetch drawable on thread. Fetches drawable on a separate thread.
 *
 * @param urlString the url string// w ww  .j av a  2  s  . c  om
 * @param listingAdapter the listing adapter
 * @param thumbnailCache the image view
 * @param position the position
 */
public static void fetchDrawableOnThread(final String urlString, final ListingAdapter listingAdapter,
        final Drawable[] thumbnailCache, final int position) {
    if (drawableMap.containsKey(urlString)) {
        Drawable o = drawableMap.get(urlString).get();

        if (o != null) {
            thumbnailCache[position] = o;
            listingAdapter.notifyDataSetChanged();
            return;
        }
    }

    final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message message) {
            thumbnailCache[position] = (Drawable) message.obj;
            listingAdapter.notifyDataSetChanged();
        }
    };

    Thread thread = new Thread() {
        @Override
        public void run() {
            Drawable drawable = fetchDrawable(urlString);
            Message message = handler.obtainMessage(1, drawable);
            handler.sendMessage(message);
        }
    };
    thread.start();
}

---

From source file:com.cloudsynch.quickshare.http.AsyncHttpResponseHandler.java

/**
 * Creates a new AsyncHttpResponseHandler
 *///from w  ww. j a v  a 2 s  .  c o  m
public AsyncHttpResponseHandler(ResultParser<T> parser) {
    // Set up a handler to post events back to the correct thread if
    // possible
    mParser = parser;
    if (Looper.myLooper() != null) {
        handler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                AsyncHttpResponseHandler.this.handleMessage(msg);
            }
        };
    }
}

---

From source file:com.chuannuo.tangguo.net.TGHttpResponseHandler.java

/**
 * Creates a new AsyncHttpResponseHandler
 *//*from  w ww . j  ava 2 s . c o  m*/
public TGHttpResponseHandler() {
    // Set up a handler to post events back to the correct thread if possible
    if (Looper.myLooper() != null) {
        handler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                TGHttpResponseHandler.this.handleMessage(msg);
            }
        };
    }
}

---

From source file:com.android.mail.browse.AttachmentActionHandler.java

public AttachmentActionHandler(Context context, AttachmentViewInterface view) {
    mCommandHandler = new AttachmentCommandHandler(context);
    mView = view;//from ww w  .  j a v  a  2 s  .co  m
    mContext = context;
    mHandler = new Handler();
    mViewOnFinish = true;
}

---

From source file:com.nonstop.android.SoC.Facebook.Hackbook.java

/** Called when the activity is first created. */
@Override/*  w  w  w. ja v  a2s  .c o  m*/
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (APP_ID == null) {
        Util.showAlert(this, "Warning",
                "Facebook Applicaton ID must be " + "specified before running this example: see FbAPIs.java");
        return;
    }

    setContentView(R.layout.main);
    mHandler_facebook = new Handler();

    mText = (TextView) Hackbook.this.findViewById(R.id.txt);
    mUserPic = (ImageView) Hackbook.this.findViewById(R.id.user_pic);

    // Create the Facebook Object using the app id.
    Utility.mFacebook = new Facebook(APP_ID);
    // Instantiate the asynrunner object for asynchronous api calls.
    Utility.mAsyncRunner = new AsyncFacebookRunner(Utility.mFacebook);

    mLoginButton = (LoginButton) findViewById(R.id.login);

    // restore session if one exists
    SessionStore.restore(Utility.mFacebook, this);
    SessionEvents.addAuthListener(new FbAPIsAuthListener());
    SessionEvents.addLogoutListener(new FbAPIsLogoutListener());

    /*
     * Source Tag: login_tag
     */
    mLoginButton.init(this, AUTHORIZE_ACTIVITY_RESULT_CODE, Utility.mFacebook, permissions);

    if (Utility.mFacebook.isSessionValid()) {
        requestUserData();
    }

    list = (ListView) findViewById(R.id.main_list);

    list.setOnItemClickListener(this);
    list.setAdapter(new ArrayAdapter<String>(this, R.layout.main_list_item, main_items));

}

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