我已经在viewpager适配器中添加了两个片段..我只添加了一个带简单吐司的按钮... onclick方法没有触发
我已经设置了可点击,可聚焦的所有属性在xml中没有任何作用。
设置viewpager适配器
ViewPagerAdapter viewPagerAdapter=new
ViewPagerAdapter(getSupportFragmentManager(),contactModels);
viewPager=findViewById(R.id.loc_viewPager);
viewPager.setAdapter(viewPagerAdapter);
viewPager.setCurrentItem(0);
viewPager.setOffscreenPageLimit(2);
tabLayout.setupWithViewPager(viewPager);
Viewpager适配器
public class ViewPagerAdapter extends FragmentStatePagerAdapter
{
private static final String TAG = "ViewPagerAdapter";
ArrayList<ContactModel> arrayList=new ArrayList<>();
public ViewPagerAdapter(FragmentManager fm,ArrayList<ContactModel> arrayList ) {
super(fm);
this.arrayList=arrayList;
}
@Override
public Fragment getItem(int i) {
Fragment selectedFragment=null;
switch (i)
{
case 0:
selectedFragment=ListOfContacts.newInstance(arrayList);
break;
case 1:
selectedFragment= DueList.getInstance();
break;
}
return selectedFragment;
}
@Override
public int getCount() {
return 2;
}
@Override
public CharSequence getPageTitle(int position) {
String s=null;
switch (position)
{
case 0:
s="List of contacts";
break;
case 1:
s="Due list";
break;
}
return s;
}
}
Vieppager hml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:focusable="true"
tools:context=".activities.MainActivity">
<ImageView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:scaleType="centerCrop"
android:src="@drawable/account_circle"
app:layout_constraintBottom_toTopOf="@+id/guideline15"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="@+id/guideline16"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.45" />
<android.support.constraint.Guideline
android:id="@+id/guideline15"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.1" />
<android.support.constraint.Guideline
android:id="@+id/guideline16"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.8" />
<android.support.design.widget.TabLayout
android:id="@+id/tabLayout"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toTopOf="@+id/guideline17"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/guideline15" />
<android.support.constraint.Guideline
android:id="@+id/guideline17"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.2" />
<android.support.v4.view.ViewPager
android:id="@+id/loc_viewPager"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tabLayout" />
</android.support.constraint.ConstraintLayout>
我的Duelist片段添加了一些onclick方法
public class DueList extends Fragment implements View.OnClickListener {
private static final String TAG = "DueList";
Button button;
public static DueList getInstance()
{
DueList dueList=new DueList();
Bundle bundle=new Bundle();
dueList.setArguments(bundle);
return dueList;
}
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_due_list, container, false);
button=view.findViewById(R.id.button);
button.setOnClickListener(this);
return view;
}
@Override
public void onClick(View v) {
Log.d(TAG, "onClick: ");
Toast.makeText(getActivity(), "clicked", Toast.LENGTH_SHORT).show();
}
}
到期清单xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
您无法确定该视图是否已在onCreateView
中膨胀。
尝试在qazxsw poi中设置click Listener
尝试首先获取视图寻呼机适配器哪个片段在该片段内部加载点击事件后加载..将这两个方法添加到viewpager适配器中..
onViewCreated()
在使用viewpager之后获取片段之后...
fun getCurrentFragment(): Fragment? {
return mCurrentFragment
}
override fun setPrimaryItem(container: ViewGroup, position: Int, `object`: Any) {
if (getCurrentFragment() !== `object`) {
mCurrentFragment = `object` as Fragment
}
super.setPrimaryItem(container, position, `object`)
}