通过Java访问片段中的CalendarView
通过Java访问片段中的CalendarView
提问于 2019-07-23 17:10:02
我想在片段中使用CalendarView，但是我不知道如何通过Java访问它。开始的时候，我只是想在一个toast中显示所选的日期，但是如果我单击一个日期，函数似乎不会被调用。
<?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();
}
});
}
}回答 2
Stack Overflow用户
回答已采纳
发布于 2019-07-23 22:17:26
在onViewCreated方法中设置setOnDateChangeListener，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;
}
}Stack Overflow用户
发布于 2019-07-23 17:28:33
下面是为您提供的有效解决方案。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<CalendarView
android:id="@+id/scheduler_calendar"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>活动如下
public class SchedulerActivity extends AppCompatActivity {
private CalendarView calendarView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
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();
}
});
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/57160618
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