我想在一个Fragment中使用CalendarView,但是我找不到如何通过Java访问它的方法。首先,我只是想在烤面包中显示选定的日期,但是如果我单击一个日期,该函数似乎没有被调用。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Fragments.SchedulerFragment">
<CalendarView
android:id="@+id/scheduler_calendar"
android:layout_width="match_parent"
android:layout_height="match_parent"></CalendarView>
</RelativeLayout>
public class SchedulerActivity extends AppCompatActivity {
private CalendarView calendarView;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
calendarView = (CalendarView) findViewById(R.id.scheduler_calendar);
calendarView.setOnDateChangeListener(new CalendarView.OnDateChangeListener() {
@Override
public void onSelectedDayChange(CalendarView calendarView, int i, int i1, int i2) {
Toast.makeText(SchedulerActivity.this, "Date changed to" + i2 + "." + i1 + "." + i, Toast.LENGTH_SHORT).show();
}
});
}
}
最佳答案
在setOnDateChangeListener
方法中设置onViewCreated
并在Toast中使用getActivity()
。我测试了下面的代码,它正在工作。
public class SchedulerFragment extends Fragment {
private CalendarView calendarView;
public SchedulerFragment() {
// Required empty public constructor
}
@Override
public void onViewCreated(@NonNull final View view, @Nullable final Bundle savedInstanceState) {
calendarView = view.findViewById(R.id.scheduler_calendar);
calendarView.setOnDateChangeListener(new OnDateChangeListener() {
@Override
public void onSelectedDayChange(@NonNull final CalendarView view, final int year, final int month,
final int dayOfMonth) {
Toast.makeText(getActivity(), "Date changed to" + dayOfMonth + "." + month + "." + year, Toast.LENGTH_SHORT).show();
}
});
}
@Override
public View onCreateView(
@NonNull LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_scheduler, container, false);
return root;
}
}