android.appwidget.AppWidgetHostView#setAppWidget ( )源码实例Demo

private AppWidgetHostView createWidgetFromId(int widget_id) {
    AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(widget_id);

    if (appWidgetInfo==null) {
        return null;
    }
    // if (checkBindPermission(widget_id, appWidgetInfo.provider)) return null;

    AppWidgetHostView hostView = getLoadedAppWidgetHostView(appWidgetInfo.provider);

    if (hostView==null || hostView.getAppWidgetId()!=widget_id) {
        // Create the host view
        hostView = mAppWidgetHost.createView(mContext, widget_id, appWidgetInfo);
        hostView.setAppWidget(widget_id, appWidgetInfo);
    }

    return hostView;
}
 

public void updateWidgetId(int oldId, int newId) {
    AppWidgetProviderInfo provider = mAppWidgetManager.getAppWidgetInfo(newId);
    AppWidgetHostView w = mLoadedWidgets.get(provider.provider);
    if (w!=null) {
        w.setAppWidget(newId, provider);
    }
    saveWidgetId(provider.provider, newId);
    mAppWidgetHost.deleteAppWidgetId(oldId);
}
 

/**
 * Adds a widget to the desktop.
 *
 * @param data Intent used to receive the ID of the widget being added.
 */
private void addWidget(Intent data, int index, boolean newWidget) {
    int widgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
            WIDGET_CONFIG_DEFAULT_CODE);
    AppWidgetProviderInfo appWidgetInfo = appWidgetManager.getAppWidgetInfo(widgetId);
    AppWidgetHostView appWidgetHostView = appWidgetHost.createView(
            requireActivity().getApplicationContext(),
            widgetId, appWidgetInfo);

    // Prevents crashing when the widget info can't be found.
    // https://github.com/Neamar/KISS/commit/f81ae32ef5ff5c8befe0888e6ff818a41d8dedb4
    if (appWidgetInfo == null) {
        removeWidget(appWidgetHostView, widgetId);
    } else {
        // Notify widget of the available minimum space.
        appWidgetHostView.setMinimumHeight(appWidgetInfo.minHeight);
        appWidgetHostView.setAppWidget(widgetId, appWidgetInfo);
        if (Utils.sdkIsAround(16)) {
            appWidgetHostView.updateAppWidgetSize(null, appWidgetInfo.minWidth,
                    appWidgetInfo.minHeight, appWidgetInfo.minWidth, appWidgetInfo.minHeight);
        }

        // Remove existing widget if any and then add the new widget.
        appWidgetContainer.addView(appWidgetHostView, index);

        // Immediately listens for the widget.
        appWidgetHost.startListening();
        addWidgetActionListener(index);
        registerForContextMenu(appWidgetContainer.getChildAt(index));

        if (newWidget) {
            // Update our list.
            widgetsList.add(String.valueOf(widgetId));

            // Apply preference changes.
            PreferenceHelper.updateWidgets(widgetsList);
        }
    }
}
 

/**
 * Adds a widget to the desktop.
 *
 * @param data Intent used to receive the ID of the widget being added.
 */
private void addWidget(Intent data, int index, boolean newWidget) {
    int widgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
            WIDGET_CONFIG_DEFAULT_CODE);
    AppWidgetProviderInfo appWidgetInfo = appWidgetManager.getAppWidgetInfo(widgetId);
    AppWidgetHostView appWidgetHostView = appWidgetHost.createView(
            requireActivity().getApplicationContext(),
            widgetId, appWidgetInfo);

    // Prevents crashing when the widget info can't be found.
    // https://github.com/Neamar/KISS/commit/f81ae32ef5ff5c8befe0888e6ff818a41d8dedb4
    if (appWidgetInfo == null) {
        removeWidget(appWidgetHostView, widgetId);
    } else {
        // Notify widget of the available minimum space.
        appWidgetHostView.setMinimumHeight(appWidgetInfo.minHeight);
        appWidgetHostView.setAppWidget(widgetId, appWidgetInfo);
        if (Utils.sdkIsAround(16)) {
            appWidgetHostView.updateAppWidgetSize(null, appWidgetInfo.minWidth,
                    appWidgetInfo.minHeight, appWidgetInfo.minWidth, appWidgetInfo.minHeight);
        }

        // Remove existing widget if any and then add the new widget.
        appWidgetContainer.addView(appWidgetHostView, index);

        // Immediately listens for the widget.
        appWidgetHost.startListening();
        addWidgetActionListener(index);
        registerForContextMenu(appWidgetContainer.getChildAt(index));

        if (newWidget) {
            // Update our list.
            widgetsList.add(String.valueOf(widgetId));

            // Apply preference changes.
            PreferenceHelper.updateWidgets(widgetsList);
        }
    }
}
 

private AppWidgetHostView loadWidget(Activity parent, AppWidgetProviderInfo appWidgetInfo) {

        // Allocate the hosted widget id
        int appWidgetId = mAppWidgetHost.allocateAppWidgetId();

        if (checkBindPermission(parent, appWidgetId, appWidgetInfo)) return null;

        Log.d(TAG, "Allowed to bind");
        Log.d(TAG, "creating widget");


        // Create the host view
        AppWidgetHostView hostView = mAppWidgetHost.createView(mContext, appWidgetId, appWidgetInfo);

        // Set the desired widget
        hostView.setAppWidget(appWidgetId, appWidgetInfo);

        return hostView;
    }
 

private void addWidget(int appWidgetId, int cellId, boolean shouldSave) {
    AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);

    final DashboardCell cellLayout = cells.get(cellId);
    final AppWidgetHostView hostView = mAppWidgetHost.createView(context, appWidgetId, appWidgetInfo);
    hostView.setAppWidget(appWidgetId, appWidgetInfo);

    Bundle bundle = new Bundle();
    bundle.putInt("cellId", cellId);
    hostView.setTag(bundle);

    cellLayout.findViewById(R.id.empty).setVisibility(View.GONE);
    cellLayout.findViewById(R.id.placeholder).setVisibility(View.GONE);
    cellLayout.setOnLongClickListener(olcl);
    cellLayout.setOnGenericMotionListener(ogml);
    cellLayout.setOnInterceptedLongPressListener(listener);

    LinearLayout linearLayout = cellLayout.findViewById(R.id.dashboard);
    linearLayout.addView(hostView);

    Bundle bundle2 = (Bundle) cellLayout.getTag();
    bundle2.putInt("appWidgetId", appWidgetId);
    cellLayout.setTag(bundle2);

    widgets.put(cellId, hostView);

    if(shouldSave) {
        SharedPreferences pref = U.getSharedPreferences(context);
        SharedPreferences.Editor editor = pref.edit();
        editor.putInt("dashboard_widget_" + cellId, appWidgetId);
        editor.putString("dashboard_widget_" + cellId + "_provider", appWidgetInfo.provider.flattenToString());
        editor.remove("dashboard_widget_" + cellId + "_placeholder");
        editor.apply();
    }

    new Handler().post(() -> {
        ViewGroup.LayoutParams params = hostView.getLayoutParams();
        params.width = cellLayout.getWidth();
        params.height = cellLayout.getHeight();
        hostView.setLayoutParams(params);
        hostView.updateAppWidgetSize(null, cellLayout.getWidth(), cellLayout.getHeight(), cellLayout.getWidth(), cellLayout.getHeight());
    });
}