Question

我试图用几张图片展示最简单的小部件，每次我试图显示应用程序崩溃，我得到空字符串引用

body = %q(
  Hello <%= Name %>,
  This is a test. hello test
  some more stuff here 
  and here.

  <%= Name %>
)

parsed_body = body.gsub(/\A<%= Name %>\Z/, "Some person")
puts parsed_body

我在小部件代码中切换了所有的tostrings和字符串实现，但它仍然没有帮助。

这是我的 MainClockWidget：

parsed_body

}

MainClockWidgetConfigureActivity：

Attempt to invoke interface method 'java.lang.String java.lang.CharSequence.toString()' on a null object reference
                                                 at java.lang.String.contains(String.java:2078)
                                                 at com.sec.location.nsflp2.a.a.c.b()
                                                 at com.sec.location.nsflp2.a.a.c.onForegroundActivitiesChanged()
                                                 at android.app.IProcessObserver$Stub.onTransact(IProcessObserver.java:55)
                                                 at android.os.Binder.execTransact(Binder.java:573)

和我的小部件xml

public class MainClockWidget extends AppWidgetProvider {

static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
                            int appWidgetId) {

    CharSequence widgetText = MainClockWidgetConfigureActivity.loadTitlePref(context, appWidgetId);
    // Construct the RemoteViews object
    RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.main_clock_widget);
    views.setTextViewText(R.id.appwidget_text, "hellow");

    // Instruct the widget manager to update the widget
    appWidgetManager.updateAppWidget(appWidgetId, views);
}

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    // There may be multiple widgets active, so update all of them
    for (int appWidgetId : appWidgetIds) {
        updateAppWidget(context, appWidgetManager, appWidgetId);
    }
}

@Override
public void onDeleted(Context context, int[] appWidgetIds) {
    // When the user deletes the widget, delete the preference associated with it.
    for (int appWidgetId : appWidgetIds) {
        MainClockWidgetConfigureActivity.deleteTitlePref(context, appWidgetId);
    }
}

@Override
public void onEnabled(Context context) {
    // Enter relevant functionality for when the first widget is created
}

@Override
public void onDisabled(Context context) {
    // Enter relevant functionality for when the last widget is disabled
}

可能是什么问题？

Answer 1

从一些奇怪的原因修复它，这只是图像太大时的错误。 <调整图像大小>解决了问题

尝试显示窗口小部件时的null对象引用

1 个答案: