java - Android 以编程方式向应用程序添加小部件警告消息

Question

我创建了一个测试 Android 启动器应用程序，并将其作为系统应用程序安装在已 root 的设备上。该应用程序的目标是将所有已安装的小部件放置在 View 页面的 fragment 上。这已经成功完成；但是，每次显示新页面时都会向用户显示一条消息。

即使用户选中该框，每次添加小部件时仍会显示该消息。

我通常遵循 Hosting widgets in an android launcher 中的步骤和 Adding widgets to a launcher page without bindAppWidgetId()将小部件添加到应用程序。

首先，我在扩展应用程序的类中获取小部件列表，并将其存储在公共(public)静态变量中

AppWidgetManager manager = AppWidgetManager.getInstance(this); 
widgetList = manager.getInstalledProviders();

接下来我使用绑定(bind) Intent 来获取小部件

appWidgetManager = AppWidgetManager.getInstance(this.getActivity());
appWidgetHost = new AppWidgetHost(this.getActivity(), APPWIDGET_HOST_ID);
int id = appWidgetHost.allocateAppWidgetId();
Intent bindIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_BIND);
bindIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id);
bindIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER,LauncherExperiment.widgetList.get(mParam1).provider);
startActivityForResult(bindIntent, REQUEST_BIND_APPWIDGET);

然后根据 Activity 结果我创建小部件

Bundle extras = data.getExtras();
int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
AppWidgetProviderInfo appWidgetInfo = appWidgetManager.getAppWidgetInfo(appWidgetId);

AppWidgetHostView hostView = appWidgetHost.createView(this.getActivity(), appWidgetId, appWidgetInfo);
hostView.setAppWidget(appWidgetId, appWidgetInfo);
// Add  it on the layout you want
myLayout.addView(hostView);

我再次对设备进行了 root 操作，并通过更新 list 将该应用程序安装为系统应用程序

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.launcherexperiment"
android:sharedUserId="android.uid.system" >

并按照此处的步骤操作: How can I sign my application with the system signature key?

综上所述，我已经能够成功绑定(bind)应用程序并显示它们；但问题是警告消息最多只能显示一次。

Answer 1

我们开始吧!使用此代码，用户只会看到该对话框一次。 它还展示了以编程方式添加小部件的完整解决方案。

由于我将在我的 github 上更新此内容，请在此处查找最新版本，https://github.com/DagW/FragmentHomescreen/blob/master/app/src/main/java/se/dw/fragmenthomescreen/widget/WidgetFragment.java .

但出于存档目的，我现在这样做。

/**
 * checkToAddWidget
 * <p/>
 * At the creation of WidgetFragment,
 * add a default widget so that the homescreen is not empty
 * shows how to add widgets programmatically
 */
private void checkToAddWidget () {
        MainActivity m = (MainActivity) getActivity();
        AppWidgetManager manager = m.getAppWidgetManager();
        AppWidgetHost host = m.getAppWidgetHost();

        List<AppWidgetProviderInfo> widgetList = manager.getInstalledProviders();

        AppWidgetProviderInfo searchProvider = null;
        AppWidgetProviderInfo search2Provider = null;
        AppWidgetProviderInfo clockProvider = null;

        for ( AppWidgetProviderInfo info : widgetList ) {
            Log.d(TAG, info.provider.getPackageName() + " " + info.provider.getClassName());
            if ( info.provider.getClassName().equals("com.google.android.googlequicksearchbox.SearchWidgetProvider") ) {
                searchProvider = info;
                break;
            }
            if ( info.provider.getClassName().equals("com.android.alarmclock.AnalogAppWidgetProvider") ) {
                clockProvider = info;
            }
            if ( info.provider.getClassName().equals("com.android.alarmclock.DigitalAppWidgetProvider") ) {
                clockProvider = info;
            }
            if ( info.provider.getClassName().equals("com.android.quicksearchbox.SearchWidgetProvider") ) {
                search2Provider = info;
            }
        }
        if ( searchProvider != null || search2Provider != null || clockProvider != null ) {
            AppWidgetProviderInfo provider = null;
            if ( searchProvider != null ) {
                provider = searchProvider;
            } else if ( clockProvider != null ) {
                provider = clockProvider;
            } else {
                provider = search2Provider;
            }

            addProvider(m, host, manager, provider);
        }
    }



public void addProvider (MainActivity m, AppWidgetHost host, AppWidgetManager manager, AppWidgetProviderInfo provider) {
    int id = host.allocateAppWidgetId();
    boolean success = false;
    success = manager.bindAppWidgetIdIfAllowed(id, provider.provider);

    if ( success ) {
        AppWidgetHostView hostView = host.createView(getActivity(), id, provider);
        AppWidgetProviderInfo appWidgetInfo = manager.getAppWidgetInfo(id);

        LauncherAppWidgetInfo info = new LauncherAppWidgetInfo(id);
        info.setHostView(hostView);
        info.getHostView().setAppWidget(id, appWidgetInfo);

        ItemInfo launcherInfo = attachWidget(info);
        if ( launcherInfo != null ) {
            WidgetPersistance.addDesktopAppWidget(screen, launcherInfo);
        }

    } else {
        Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_BIND);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER, provider.provider);
        m.startActivityForResult(intent, MainActivity.REQUEST_BIND_APPWIDGET);
    }

}

您可能还需要

<uses-permission android:name="android.permission.BIND_APPWIDGET"
                 tools:ignore="ProtectedPermissions"/>