Configuring specific widgets with intents

Question

I have widgets that are automatically added to the launcher, but some of these widgets need to be configured so I set an onClick listener to get the id and get the widget info to launch the Activity to configure the widget, but the problem I am having is when I return from the Activity of say a weather widget, the part where it is failing is in the create method , when I try get the appWidgetInfo by the widget id, but the id comes back with the intent. I dont know what is going wrong can anyone help me with this problem please??

    AppWidgetManager mAppWidgetManager;
    AppWidgetHost mAppWidgetHost;
    LinearLayout mainlayout;
    ComponentName cn = null;


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mainlayout = (LinearLayout) findViewById(R.id.mylauncher);
    mainlayout.setOnClickListener(this);

    mAppWidgetManager = AppWidgetManager.getInstance(this);
    mAppWidgetHost = new AppWidgetHost(this, R.id.APPWIDGET_HOST_ID);

    // search widgets
    searchWidgets();

}





public void searchWidgets() {
    String widget = "com.weather.Weather.widgets.WeatherWidgetProvider4x1";
    try {

        mAppWidgetManager = AppWidgetManager.getInstance(getBaseContext());
        final List infos = mAppWidgetManager
                .getInstalledProviders();
        AppWidgetProviderInfo appWidgetInfo = null;
        for (final AppWidgetProviderInfo info : infos) {
            Log.v("Available Widgets", "label " + info.label + " ::"
                    + info.provider.getPackageName() + " / "
                    + info.provider.getClassName());
        }

        for (final AppWidgetProviderInfo info : infos) {
            Log.v("Searching for Widget class",
                    info.provider.getPackageName() + " / "
                            + info.provider.getClassName());

            if (widget.equals(info.provider.getClassName())) {
                String packageName = info.provider.getPackageName()
                        .toString();
                cn = new ComponentName(packageName, widget);
                // found it
                appWidgetInfo = info;
                Log.d("FOUND !!!!!!!!!", "Widget class " + packageName);

                break;
            }

        }

        mAppWidgetHost = new AppWidgetHost(getBaseContext(),
                R.id.APPWIDGET_HOST_ID);

        if (appWidgetInfo == null) {
            Log.d(TAG, cn + " No such widget available returning view");

            // return; // stop here
        } else {

            int appWidgetId = mAppWidgetHost.allocateAppWidgetId();

            AppWidgetHostView hostView = mAppWidgetHost.createView(this,
                    appWidgetId, appWidgetInfo);
            hostView.setAppWidget(appWidgetId, appWidgetInfo);

            AppWidgetHostView hostViewsecond = mAppWidgetHost.createView(
                    this, appWidgetId, appWidgetInfo);
            hostView.setAppWidget(appWidgetId, appWidgetInfo);

            hostView.setId(appWidgetInfo.previewImage);

            Drawable draw = null;
            String packageName = appWidgetInfo.provider.getPackageName();
            try {
                draw = this.getPackageManager().getDrawable(packageName,
                        appWidgetInfo.previewImage,
                        this.getPackageManager().getApplicationInfo(packageName,
                                0));
            } catch (NameNotFoundException e) {
                Log.d(TAG, "drawable not found",e);
            }

            ImageView preViewWigdet = new ImageView(this);
            preViewWigdet.setImageDrawable(draw);
            preViewWigdet.setId(appWidgetInfo.previewImage);


            mainlayout.addView(preViewWigdet);

        }

    } catch (SecurityException securityEx) {
        Log.e("Bind Widget",
                "Error device not rooted,  returning view, Security exception:- ",
                securityEx);

    }
}



@Override
public void onClick(View v) {
    AppWidgetProviderInfo widgetItem = null;
    mAppWidgetHost = new AppWidgetHost(this, R.id.APPWIDGET_HOST_ID);
    int appWidgetId = mAppWidgetHost.allocateAppWidgetId();

    if (view.getClass().equals(ImageView.class)){
    // putting installed Providers in a list
    final List infos = mAppWidgetManager
            .getInstalledProviders();
    for (int i = 0; i < infos.size(); i++) {
        if (infos.get(i).previewImage == view.getId()) {
            widgetItem = (AppWidgetProviderInfo) infos.get(i);
        }
    }
    ComponentName cn = new ComponentName(
            widgetItem.provider.getPackageName(),
            widgetItem.provider.getClassName());

    int[] ids;
    ids = mAppWidgetManager.getAppWidgetIds(cn);
    Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);

    intent.setComponent(widgetItem.configure);
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);

    if (widgetItem.configure != null) {
        Log.d(TAG, "widget to be configured " + widgetItem.label);
        ((Activity) this).startActivityForResult(intent,
                R.id.REQUEST_CREATE_APPWIDGET);
    }

}
}



/**
 * If the user has selected an widget, the result will be in the 'data' when
 * this function is called.
 */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.d(TAG, "" + resultCode);
    if (resultCode == RESULT_OK) {
        if (requestCode == R.id.REQUEST_PICK_APPWIDGET) {
            configureWidget(data);
        }
        if (requestCode == R.id.REQUEST_CREATE_APPWIDGET) {
            mAppWidgetManager = AppWidgetManager.getInstance(this);
            createWidget(data);
        }
    } else if (resultCode == RESULT_CANCELED && data != null) {
        int appWidgetId = data.getIntExtra(
                AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
        if (appWidgetId != -1) {
            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
        }
    }
}

/**
 * Checks if the widget needs any configuration. If it needs, launches the
 * configuration activity.
 */
private void configureWidget(Intent data) {
    Bundle extras = data.getExtras();
    int appWidgetId = extras
            .getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
    AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager
            .getAppWidgetInfo(appWidgetId);
    if (appWidgetInfo.configure != null) {
        Intent intent = new Intent(
                AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
        intent.setComponent(appWidgetInfo.configure);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
        startActivityForResult(intent, R.id.REQUEST_CREATE_APPWIDGET);
    } else {
        createWidget(data);
    }
}

/**
 * Creates the widget and adds to our view layout.
 */
public void createWidget(Intent data) {
    Bundle extras = data.getExtras();
    int appWidgetId = extras
            .getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);

  //this is where I am having the problem, appWidgetInfo returns null
    AppWidgetProviderInfo appWidgetInfo = this.mAppWidgetManager
            .getAppWidgetInfo(appWidgetId);

    AppWidgetHostView hostView = mAppWidgetHost.createView(this,
            appWidgetId, appWidgetInfo);
    hostView.setAppWidget(appWidgetId, appWidgetInfo);
    mainlayout.addView(hostView);

    Log.i(TAG, "The widget size is: " + appWidgetInfo.minWidth + "*"
            + appWidgetInfo.minHeight);
}

Configuring specific widgets with intents

Answers (1)

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