为什么小部件不更新以及如何将图像按钮设置为选中

Question

XML:

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:minWidth="294dp"
    android:minHeight="72dp"
    android:updatePeriodMillis="1"
    android:initialLayout="@layout/activity_widget" >
</appwidget-provider>

代码：

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

    Log.i("ExampleWidget",  "Updating widgets " + Arrays.asList(appWidgetIds));

    // Perform this loop procedure for each App Widget that belongs to this
    // provider
    for (int i = 0; i < N; i++) {
        int appWidgetId = appWidgetIds[i];
        int k, p;
        k = 0;
        Log.d("Current SYSTEM", k+"");
    }
    appWidgetManager.updateAppWidget(appWidgetId, views); //even though it is being called here, the function itself is greyed out, stating the method is never used.
}
...
//this function is greyed out stating, this method is never used... how come?
public static void updateAppWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
        RemoteViews updateViews = new RemoteViews(context.getPackageName(), R.layout.activity_widget);
        appWidgetManager.updateAppWidget(appWidgetId, updateViews);
        Log.d("UPDATED", "testing");
    }

当我将小部件添加到主屏幕时，我看到 Log，但即使我将 updatePeriodMillis 设置为 1，Log 也不再显示（除非我删除小部件并重新添加它）。

如何根据 updatePeriodMillis

显示 Log

我的第二期：

我在 Activity 中有以下内容：

if (int u <= 0) {
    imageButton1.setSelected(true);
    ImageButton2.setSelected(false);
}

如何在 Widget 中模仿相同的内容。

Answer 1

该函数显示为灰色，因为您正在调用该方法的重载版本，请仔细检查您传递的参数

appWidgetManager.updateAppWidget(appWidgetId, views);

和

updateAppWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId)

更精准的提示

appWidgetId, views 不同于 Context context, AppWidgetManager appWidgetManager, int appWidgetId

为什么小部件不更新以及如何将图像按钮设置为选中

Why isn't the widget updating and how to set an imagebutton as selected

android

widget