Examples with Loader android.content.Loader used on opensource projects

Example 1 with Loader

use of android.content.Loader in project android_frameworks_base by ParanoidAndroid.

the class LoaderTestCase method getLoaderResultSynchronously.

/**
     * Runs a Loader synchronously and returns the result of the load. The loader will
     * be started, stopped, and destroyed by this method so it cannot be reused.
     *
     * @param loader The loader to run synchronously
     * @return The result from the loader
     */
public <T> T getLoaderResultSynchronously(final Loader<T> loader) {
    // The test thread blocks on this queue until the loader puts it's result in
    final ArrayBlockingQueue<T> queue = new ArrayBlockingQueue<T>(1);
    // This callback runs on the "main" thread and unblocks the test thread
    // when it puts the result into the blocking queue
    final OnLoadCompleteListener<T> listener = new OnLoadCompleteListener<T>() {

        @Override
        public void onLoadComplete(Loader<T> completedLoader, T data) {
            // Shut the loader down
            completedLoader.unregisterListener(this);
            completedLoader.stopLoading();
            completedLoader.reset();
            // Store the result, unblocking the test thread
            queue.add(data);
        }
    };
    // This handler runs on the "main" thread of the process since AsyncTask
    // is documented as needing to run on the main thread and many Loaders use
    // AsyncTask
    final Handler mainThreadHandler = new Handler(Looper.getMainLooper()) {

        @Override
        public void handleMessage(Message msg) {
            loader.registerListener(0, listener);
            loader.startLoading();
        }
    };
    // Ask the main thread to start the loading process
    mainThreadHandler.sendEmptyMessage(0);
    // Block on the queue waiting for the result of the load to be inserted
    T result;
    while (true) {
        try {
            result = queue.take();
            break;
        } catch (InterruptedException e) {
            throw new RuntimeException("waiting thread interrupted", e);
        }
    }
    return result;
}

Example 2 with Loader

use of android.content.Loader in project android-demos by novoda.

the class ContactSelector method onActivityResult.

@Override
public void onActivityResult(int reqCode, int resultCode, Intent data) {
    super.onActivityResult(reqCode, resultCode, data);
    switch(reqCode) {
        case (PICK_CONTACT):
            if (resultCode == Activity.RESULT_OK) {
                Uri contactData = data.getData();
                CursorLoader loader = new CursorLoader(this, contactData, null, null, null, null);
                loader.registerListener(LOADER_ID_CONTACT, new Loader.OnLoadCompleteListener<Cursor>() {

                    @Override
                    public void onLoadComplete(final Loader<Cursor> loader, final Cursor data) {
                        if (data.moveToFirst()) {
                            int nameColumnIndex = data.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME_PRIMARY);
                            String name = data.getString(nameColumnIndex);
                            txtContacts.setText(name);
                        }
                    }
                });
                loader.startLoading();
            }
            break;
    }
}

Example 3 with Loader

use of android.content.Loader in project platform_frameworks_base by android.

the class LoaderTestCase method getLoaderResultSynchronously.

/**
     * Runs a Loader synchronously and returns the result of the load. The loader will
     * be started, stopped, and destroyed by this method so it cannot be reused.
     *
     * @param loader The loader to run synchronously
     * @return The result from the loader
     */
public <T> T getLoaderResultSynchronously(final Loader<T> loader) {
    // The test thread blocks on this queue until the loader puts it's result in
    final ArrayBlockingQueue<T> queue = new ArrayBlockingQueue<T>(1);
    // This callback runs on the "main" thread and unblocks the test thread
    // when it puts the result into the blocking queue
    final OnLoadCompleteListener<T> listener = new OnLoadCompleteListener<T>() {

        @Override
        public void onLoadComplete(Loader<T> completedLoader, T data) {
            // Shut the loader down
            completedLoader.unregisterListener(this);
            completedLoader.stopLoading();
            completedLoader.reset();
            // Store the result, unblocking the test thread
            queue.add(data);
        }
    };
    // This handler runs on the "main" thread of the process since AsyncTask
    // is documented as needing to run on the main thread and many Loaders use
    // AsyncTask
    final Handler mainThreadHandler = new Handler(Looper.getMainLooper()) {

        @Override
        public void handleMessage(Message msg) {
            loader.registerListener(0, listener);
            loader.startLoading();
        }
    };
    // Ask the main thread to start the loading process
    mainThreadHandler.sendEmptyMessage(0);
    // Block on the queue waiting for the result of the load to be inserted
    T result;
    while (true) {
        try {
            result = queue.take();
            break;
        } catch (InterruptedException e) {
            throw new RuntimeException("waiting thread interrupted", e);
        }
    }
    return result;
}

Example 4 with Loader

use of android.content.Loader in project android_frameworks_base by DirtyUnicorns.

the class LoaderTestCase method getLoaderResultSynchronously.

/**
     * Runs a Loader synchronously and returns the result of the load. The loader will
     * be started, stopped, and destroyed by this method so it cannot be reused.
     *
     * @param loader The loader to run synchronously
     * @return The result from the loader
     */
public <T> T getLoaderResultSynchronously(final Loader<T> loader) {
    // The test thread blocks on this queue until the loader puts it's result in
    final ArrayBlockingQueue<T> queue = new ArrayBlockingQueue<T>(1);
    // This callback runs on the "main" thread and unblocks the test thread
    // when it puts the result into the blocking queue
    final OnLoadCompleteListener<T> listener = new OnLoadCompleteListener<T>() {

        @Override
        public void onLoadComplete(Loader<T> completedLoader, T data) {
            // Shut the loader down
            completedLoader.unregisterListener(this);
            completedLoader.stopLoading();
            completedLoader.reset();
            // Store the result, unblocking the test thread
            queue.add(data);
        }
    };
    // This handler runs on the "main" thread of the process since AsyncTask
    // is documented as needing to run on the main thread and many Loaders use
    // AsyncTask
    final Handler mainThreadHandler = new Handler(Looper.getMainLooper()) {

        @Override
        public void handleMessage(Message msg) {
            loader.registerListener(0, listener);
            loader.startLoading();
        }
    };
    // Ask the main thread to start the loading process
    mainThreadHandler.sendEmptyMessage(0);
    // Block on the queue waiting for the result of the load to be inserted
    T result;
    while (true) {
        try {
            result = queue.take();
            break;
        } catch (InterruptedException e) {
            throw new RuntimeException("waiting thread interrupted", e);
        }
    }
    return result;
}

Example 5 with Loader

use of android.content.Loader in project android_frameworks_base by DirtyUnicorns.

the class RecentsCreateFragment method onCreateView.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    final Context context = inflater.getContext();
    final View view = inflater.inflate(R.layout.fragment_directory, container, false);
    mRecView = (RecyclerView) view.findViewById(R.id.dir_list);
    mRecView.setLayoutManager(new LinearLayoutManager(getContext()));
    mRecView.addOnItemTouchListener(mItemListener);
    mEmptyView = view.findViewById(android.R.id.empty);
    mAdapter = new DocumentStackAdapter();
    mRecView.setAdapter(mAdapter);
    final RootsCache roots = DocumentsApplication.getRootsCache(context);
    final State state = ((BaseActivity) getActivity()).getDisplayState();
    mCallbacks = new LoaderCallbacks<List<DocumentStack>>() {

        @Override
        public Loader<List<DocumentStack>> onCreateLoader(int id, Bundle args) {
            return new RecentsCreateLoader(context, roots, state);
        }

        @Override
        public void onLoadFinished(Loader<List<DocumentStack>> loader, List<DocumentStack> data) {
            mAdapter.update(data);
            // When launched into empty recents, show drawer
            if (mAdapter.isEmpty() && !state.hasLocationChanged() && state.action != ACTION_CREATE && context instanceof DocumentsActivity) {
                ((DocumentsActivity) context).setRootsDrawerOpen(true);
            }
        }

        @Override
        public void onLoaderReset(Loader<List<DocumentStack>> loader) {
            mAdapter.update(null);
        }
    };
    return view;
}