Android - 将 AppWidgets 添加到 Activity

问题描述

我最初的目标是将 Google 搜索小部件添加到活动的线性布局中.我需要包含它，就像它在启动器中显示和工作一样(这就是我需要能够添加小部件的原因).

我想在我的活动中添加小部件，而不必启动小部件选择器活动.我尝试过了:

1.直接指定一个整数 id(我总是得到 inflate 错误)

I would like to add widgets to my activity whithout having to launch the widget picker activity. I tried to:

1. directly specify an integer id (I always get inflate errors)

2.像这样获取 id:

2. get the id like this:

  ComponentName cn = new ComponentName(getBaseContext(), "com.android.quicksearchbox.SearchWidgetProvider");
  int[] ids = AppWidgetManager.getInstance(getApplicationContext()).getAppWidgetIds (cn);

(数组始终为空)

这些都不起作用.

在此之后，我有了这段代码，以使用 ID(如果我从小部件选择器活动中获取 ID，它就可以工作):

After this I have this code, to use the ID (it works if I get the ID from the widget picker activity):

    AppWidgetProviderInfo withWidgetInfo = AppWidgetManager.getInstance(getApplicationContext()).getAppWidgetInfo(appWidgetId);
    AppWidgetHostView hostView = myWidgetHost.createView(getBaseContext(), appWidgetId, withWidgetInfo);
    hostView.setAppWidget(appWidgetId, withWidgetInfo);
    LinearLayout ll = (LinearLayout) findViewById(R.id.ll);
    ll.addView(hostView);

我该怎么做?谢谢！

推荐答案

试试这个:

// APPWIDGET_HOST_ID is any number you like
appWidgetManager = AppWidgetManager.getInstance(this);
appWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);
AppWidgetProviderInfo newAppWidgetProviderInfo = new AppWidgetProviderInfo();

// Get an id
int appWidgetId = appWidgetHost.allocateAppWidgetId();

// Get the list of installed widgets
List<AppWidgetProviderInfo> appWidgetInfos = new ArrayList<AppWidgetProviderInfo>();
appWidgetInfos = appWidgetManager.getInstalledProviders();

for(int j = 0; j < appWidgetInfos.size(); j++)
{
    if (appWidgetInfos.get(j).provider.getPackageName().equals("com.android.quicksearchbox") && appWidgetInfos.get(j).provider.getClassName().equals("com.android.quicksearchbox.SearchWidgetProvider"))
    {
        // Get the full info of the required widget
        newAppWidgetProviderInfo = appWidgetInfos.get(j);
        break;
    }
 }

// Create Widget
AppWidgetHostView hostView = appWidgetHost.createView(this, appWidgetId, newAppWidgetProviderInfo);
hostView.setAppWidget(appWidgetId, newAppWidgetProviderInfo);

// Add it to your layout
LinearLayout ll = (LinearLayout) findViewById(R.id.ll);
ll.addView(hostView);

编辑:

要绑定小部件 ID，即让小部件更新并响应用户交互，请参阅此处的解决方案:小部件在重新时不响应- 通过代码添加

To bind widget IDs, i.e. make widgets update and respond to user interaction, refer the solution here: Widgets don't respond when re-added through code

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