Android widget, launch a Fragment?

Question

I currentley have an adroid widget, that when clicked on launches an activity. I have changed my whole app to fragments in order to use the android navigation drawer, and I am not sure how to launch my fragment when my widget is clicked.

My widget code which launches an activity is:

public class SearchWidget extends AppWidgetProvider {

    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        final int N = appWidgetIds.length;

        // Perform this loop procedure for each App Widget that belongs to this provider
        for (int i=0; i<N; i++) {
            int appWidgetId = appWidgetIds[i];

            // Create an Intent to launch ExampleActivity
            Intent intent = new Intent(context, Search.class);
            PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);

            // Get the layout for the App Widget and attach an on-click listener
            // to the button
            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_search);
            views.setOnClickPendingIntent(R.id.searchclick, pendingIntent);

            // Tell the AppWidgetManager to perform an update on the current app widget
            appWidgetManager.updateAppWidget(appWidgetId, views);
        }

    }


}

How can I launch a fragment, but also launch it in my view which hold my drawer also?

I have a MainDrawer activity:

public class MainDrawer2 extends Activity {

    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    // nav drawer title
    private CharSequence mDrawerTitle;

    // used to store app title
    private CharSequence mTitle;

    // slide menu items
    private String[] navMenuTitles;
    private TypedArray navMenuIcons;

    private ArrayList<NavDrawerItem> navDrawerItems;
    private NavDrawerListAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fragment_main);

        mTitle = mDrawerTitle = getTitle();

        // load slide menu items
        navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);

        // nav drawer icons from resources


        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.drawer);

        navDrawerItems = new ArrayList<NavDrawerItem>();

        // adding nav drawer items to array
        // Home
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[0]));
        // Find People
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[1]));
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[2]));
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[3]));



        // setting the nav drawer list adapter
        adapter = new NavDrawerListAdapter(getApplicationContext(),
                navDrawerItems);
        mDrawerList.setAdapter(adapter);

        // enabling action bar app icon and behaving it as toggle button
        getActionBar().setDisplayHomeAsUpEnabled(true);

        mDrawerList.setOnItemClickListener(new SlideMenuClickListener());


        //getActionBar().setHomeButtonEnabled(true);

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.drawable.ic_drawer, //nav menu toggle icon
                R.string.app_name, // nav drawer open - description for accessibility
                R.string.app_name // nav drawer close - description for accessibility
        ){
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(mTitle);
                // calling onPrepareOptionsMenu() to show action bar icons
                invalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(mDrawerTitle);
                // calling onPrepareOptionsMenu() to hide action bar icons
                invalidateOptionsMenu();
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            // on first time display view for first nav item
            displayView(0);
        }


    }



    /**
     * Slide menu item click listener
     * */
    private class SlideMenuClickListener implements
            ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                                long id) {
            // display view for selected nav drawer item
            displayView(position);
        }
    }

    /**
     * Diplaying fragment view for selected nav drawer list item
     * */
    private void displayView(int position) {
        // update the main content by replacing fragments
        Fragment fragment = null;
        switch (position) {
            case 0:
                fragment = new StatisticsPage();
                break;
            case 1:
                fragment = new Discover();
                break;
            case 2:
                fragment = new Portfolio();
                break;
            case 3:
                fragment = new NewsWeb();
                break;

            default:
                break;
        }

        if (fragment != null) {
            FragmentManager fragmentManager = getFragmentManager();
            fragmentManager.beginTransaction()
                    .replace(R.id.main, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            mDrawerList.setSelection(position);
            setTitle(navMenuTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
        } else {
            // error in creating fragment
            Log.e("MainActivity", "Error in creating fragment");
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // toggle nav drawer on selecting action bar app icon/title
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        // Handle action bar actions click
        switch (item.getItemId()) {
            //case R.id.menu_search2:



                //return true;

            default:
                return super.onOptionsItemSelected(item);
        }
    }

    /***
     * Called when invalidateOptionsMenu() is triggered
     */
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        // if nav drawer is opened, hide the action items
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        //menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public void setTitle(CharSequence title) {
        mTitle = title;
        getActionBar().setTitle(mTitle);
    }

    /**
     * When using the ActionBarDrawerToggle, you must call it during
     * onPostCreate() and onConfigurationChanged()...
     */

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggls
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    public void goToSearch(MenuItem item){

        //go to search page
        //Intent i = new Intent(this,Search.class);
        //startActivity(i);

        FragmentManager man=getFragmentManager();
        FragmentTransaction tran=man.beginTransaction();
        Fragment Fragment_four= new Search();
        tran.replace(R.id.main, Fragment_four);//tran.
        tran.addToBackStack(null);
        tran.commit();

    }



}

The main drawer uses this xml which has a fragment for the navigation drawer and one for the actual fragments that get loaded. The MainDrawer activity above initiates with the statistics fragment. I want my widget to launch with the below xml but not initiate the statistics fragment. I want it to load another fragments.

XML:

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <FrameLayout
        android:id="@+id/main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </FrameLayout>

    <ListView
        android:id="@+id/drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:divider="@android:color/white"
        android:background="@android:color/black"
        android:choiceMode="singleChoice"/>

</android.support.v4.widget.DrawerLayout>

UPDATE:

public class MainDrawer2 extends Activity {

    public static final String EXTRA_DEFAULT_FRAGMENT = "com.beerportfolio.beerportfoliopro.EXTRA_DEFAULT_FRAGMENT";

    public static final int FRAGMENT_STATISTICS = 0;
    public static final int FRAGMENT_DISCOVER = 1;

    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    // nav drawer title
    private CharSequence mDrawerTitle;

    // used to store app title
    private CharSequence mTitle;

    // slide menu items
    private String[] navMenuTitles;
    private TypedArray navMenuIcons;

    private ArrayList<NavDrawerItem> navDrawerItems;
    private NavDrawerListAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fragment_main);

        mTitle = mDrawerTitle = getTitle();

        // load slide menu items
        navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);

        // nav drawer icons from resources


        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.drawer);

        navDrawerItems = new ArrayList<NavDrawerItem>();

        // adding nav drawer items to array
        // Home
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[0]));
        // Find People
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[1]));
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[2]));
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[3]));



        // setting the nav drawer list adapter
        adapter = new NavDrawerListAdapter(getApplicationContext(),
                navDrawerItems);
        mDrawerList.setAdapter(adapter);

        // enabling action bar app icon and behaving it as toggle button
        getActionBar().setDisplayHomeAsUpEnabled(true);

        mDrawerList.setOnItemClickListener(new SlideMenuClickListener());


        //getActionBar().setHomeButtonEnabled(true);

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.drawable.ic_drawer, //nav menu toggle icon
                R.string.app_name, // nav drawer open - description for accessibility
                R.string.app_name // nav drawer close - description for accessibility
        ){
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(mTitle);
                // calling onPrepareOptionsMenu() to show action bar icons
                invalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(mDrawerTitle);
                // calling onPrepareOptionsMenu() to hide action bar icons
                invalidateOptionsMenu();
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            Intent i = getIntent();

            // Default to the stats fragment if a default wasn't supplied
            int defaultView = i.getIntExtra(EXTRA_DEFAULT_FRAGMENT, FRAGMENT_STATISTICS);
            displayView(defaultView);
        }


    }



    /**
     * Slide menu item click listener
     * */
    private class SlideMenuClickListener implements
            ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                                long id) {
            // display view for selected nav drawer item
            displayView(position);
        }
    }

    /**
     * Diplaying fragment view for selected nav drawer list item
     * */
    private void displayView(int position) {
        // update the main content by replacing fragments
        Fragment fragment = null;
        switch (position) {
            case 0:
                fragment = new StatisticsPage();
                break;
            case 1:
                fragment = new Discover();
                break;
            case 2:
                fragment = new Portfolio();
                break;
            case 3:
                fragment = new NewsWeb();
                break;

            default:
                break;
        }

        if (fragment != null) {
            FragmentManager fragmentManager = getFragmentManager();
            fragmentManager.beginTransaction()
                    .replace(R.id.main, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            mDrawerList.setSelection(position);
            setTitle(navMenuTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
        } else {
            // error in creating fragment
            Log.e("MainActivity", "Error in creating fragment");
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // toggle nav drawer on selecting action bar app icon/title
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        // Handle action bar actions click
        switch (item.getItemId()) {
            //case R.id.menu_search2:



                //return true;

            default:
                return super.onOptionsItemSelected(item);
        }
    }

    /***
     * Called when invalidateOptionsMenu() is triggered
     */
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        // if nav drawer is opened, hide the action items
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        //menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public void setTitle(CharSequence title) {
        mTitle = title;
        getActionBar().setTitle(mTitle);
    }

    /**
     * When using the ActionBarDrawerToggle, you must call it during
     * onPostCreate() and onConfigurationChanged()...
     */

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggls
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    public void goToSearch(MenuItem item){

        //go to search page
        //Intent i = new Intent(this,Search.class);
        //startActivity(i);

        FragmentManager man=getFragmentManager();
        FragmentTransaction tran=man.beginTransaction();
        Fragment Fragment_four= new Search();
        tran.replace(R.id.main, Fragment_four);//tran.
        tran.addToBackStack(null);
        tran.commit();

    }



}

Answer 1

Here's an example of doing what you want.

https://docs.google.com/file/d/0BxaaQ-XiIcHAakxVSTZYMURlYm8/

Answer 2

So it looks like you already have a good framework in place that'll make this easy. First, define a value for an extra to pass in with your launch intent:

public class MainDrawer2 extends Activity {
    public static final String EXTRA_DEFAULT_FRAGMENT = "my.package.name.EXTRA_DEFAULT_FRAGMENT";

    public static final int FRAGMENT_STATISTICS = 0;
    public static final int FRAGMENT_DISCOVER = 1;
    //... etc.

Then, in your onCreate(), where you current call displayView(0), do something like:

if (savedInstanceState == null) {
    Intent i = getIntent();
    // Default to the stats fragment if a default wasn't supplied
    int defaultView = i.getIntExtra(EXTRA_DEFAULT_FRAGMENT, FRAGMENT_STATISTICS);
    displayView(defaultView);
}

This way, you can create your PendingIntent with your Activity launch Intent, but when you do so, simply include the default fragment extra:

Intent i = new Intent(context, MainDrawer2.class);
i.putExtra(MainDrawer2.EXTRA_DEFAULT_FRAGMENT, MainDrawer2.FRAGMENT_DISCOVER);
PendingIntent pi = PendingIntent.getActivity(context, 0, i, 0);