小编Hem*_*mul的帖子

second_fragment.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/f2_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/f2_textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/f2_tv" />

<Button
    android:id="@+id/f2_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:onClick="button"
    android:text="@string/f2_bttn" />

SecondFragment.java

   public class SecondFragment extends Fragment {

    FragmentInterface iface;

    public interface FragmentInterface {
        public void buttonPressed();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        return inflater.inflate(R.layout.second_fragment, container, false);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);

        // This makes sure that the container activity has implemented
        // the callback interface. If not, it throws an …

我有一些带有源代码的字符串，例如

var newSource = @"
int a = 5;
int b = 10;
Console.WriteLine(a + b);";

我尝试使用解析的代码创建BlockSyntax对象

var newTokens = SyntaxFactory.ParseTokens(newSource);
var newBody = SyntaxFactory.Block();
newBody = newBody.InsertTokensAfter(
  newBody.OpenBraceToken, // or newBody.ChildTokens().First()
  newTokens
);

但是方法InsertTokenAfter方法引发System.InvalidOperationException'指定的项目不是列表的元素。'

据我了解，该方法无法在ChildTokens（）中找到令牌，但是为什么会发生呢？

.NET Core 1.0.4

 public void SetAlarm(Context context, int sec)
 {
     AlarmManager am=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
     Intent i = new Intent(context, Alarm.class);
     PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
     am.set(AlarmManager.RTC, System.currentTimeMillis()+1000*5 , pi);
     i = new Intent(context, Alarm.class);
     pi = PendingIntent.getBroadcast(context, 0, i, 0);   
     am.set(AlarmManager.RTC, System.currentTimeMillis()+1000*10 , pi); 

 }

为什么onReceive只在10秒后工作一次？