Je veux ajouter des éléments d'onglet dynamiques. J'ai un fragment qui est FragmentOne et il a un TextView. J'essaie de créer FragmentOne dans foreach et d'ajouter des onglets. J'ai testé le code qui est dans setupViewPager mais cela ne fonctionne pas. Comment puis-je éditer TextView qui en fragments?
si je supprime ces lignes cela fonctionne mais le contenu de fragment indique toujours par défaut que = "TAB ONE". Je veux éditer tout TextView qui est dans des fragments qui ont été créés au moment de l'exécution;
View view = fView.getView();
TextView txtTabItemNumber = (TextView)view.findViewById(R.id.txtTabItemNumber);
txtTabItemNumber.setText("TAB " + i);
DynamicTabsActivity.Java
public class DynamicTabsActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dynamic_tabs);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
LayoutInflater inflator = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
int count = 10;
for (int i=0; i<count; i++){
OneFragment fView = new OneFragment();
View view = fView.getView();
TextView txtTabItemNumber = (TextView)view.findViewById(R.id.txtTabItemNumber);
txtTabItemNumber.setText("TAB " + i);
adapter.addFrag(fView,"TAB " + i);
}
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
activity_dynamic_tabs.xml
<Android.support.design.widget.CoordinatorLayout 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">
<Android.support.design.widget.AppBarLayout
Android:layout_width="match_parent"
Android:layout_height="wrap_content"
Android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<Android.support.v7.widget.Toolbar
Android:id="@+id/toolbar"
Android:layout_width="match_parent"
Android:layout_height="?attr/actionBarSize"
Android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
<Android.support.design.widget.TabLayout
Android:id="@+id/tabs"
Android:layout_width="match_parent"
Android:layout_height="wrap_content"
app:tabMode="scrollable"/>
</Android.support.design.widget.AppBarLayout>
<Android.support.v4.view.ViewPager
Android:id="@+id/viewpager"
Android:layout_width="match_parent"
Android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</Android.support.design.widget.CoordinatorLayout>
OneFragment.Java
public class OneFragment extends Fragment{
public OneFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_one, container, false);
}
}
fragment_one.xml
<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="info.androidhive.materialtabs.fragments.OneFragment">
<TextView
Android:id="@+id/txtTabItemNumber"
Android:layout_width="wrap_content"
Android:layout_height="wrap_content"
Android:text="TAB ONE"
Android:textSize="40dp"
Android:textStyle="bold"
Android:layout_centerInParent="true"/>
</RelativeLayout>
La disposition du fragment n'a pas été créée au point que vous appelez findViewById
ci-dessous:
OneFragment fView = new OneFragment();
View view = fView.getView();
TextView txtTabItemNumber = (TextView)view.findViewById(R.id.txtTabItemNumber);
Ce qui suit est plus généralement la façon dont cela est codé:
public static class OneFragment extends Fragment {
private static final String ARG_SECTION_NUMBER = "section_number";
private int sectionNumber;
public OneFragment() {
}
public static OneFragment newInstance(int sectionNumber) {
OneFragment fragment = new OneFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_one, container, false);
sectionNumber = getArguments().getInt(ARG_SECTION_NUMBER);
TextView textView = (TextView) rootView.findViewById(R.id.txtTabItemNumber);
textView.setText("TAB " + sectionNumber);
return rootView;
}
}
vous pouvez également vouloir déplacer la création de fragments vers l'adaptateur ... par exemple:
public Fragment getItem(int position) {
return OneFragment.newInstance(position + 1);
}
Essaye ça,
LinearLayout main = new LinearLayout(this);
main.setOrientation(LinearLayout.VERTICAL);
TextView textView = new TextView(this);
textView .setText("TAB " + i);
main .addView(textView );
Après avoir essayé longtemps ... je suis arrivé à la solution suivante: DynamicTabsActivity est mon activité principale, ressemble à ceci:
public class DynamicTabsActivity extends AppCompatActivity {
private TabLayout tabLayout;
private ViewPager viewPager;
private ViewPagerAdapter viewPagerAdapter;
private int noOfTabs = 10;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dynamic_tabs);
viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager(), noOfTabs);
viewPager = findViewById(R.id.viewpager);
viewPager.setAdapter(viewPagerAdapter);
tabLayout = findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
}
Mon fragment ressemble à ceci:
public class DynamicFragment extends Fragment {
private static final String ARG_SECTION_NUMBER = "section_number";
private int sectionNumber;
public DynamicFragment() {
// Required empty public constructor
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
sectionNumber = getArguments() != null ? getArguments().getInt(ARG_SECTION_NUMBER) : 1;
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_dynamic, container, false);
TextView textView = view.findViewById(R.id.txtTabItemNumber);
textView.setText("TAB " + sectionNumber);
return view;
}
public static DynamicFragment newInstance(int sectionNumber) {
DynamicFragment fragment = new DynamicFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
}
Ma classe ViewPager ressemble à ceci:
public class ViewPagerAdapter extends FragmentStatePagerAdapter {
private int noOfItems;
public ViewPagerAdapter(FragmentManager fm, int noOfItems) {
super(fm);
this.noOfItems = noOfItems;
}
@Override
public Fragment getItem(int position) {
return DynamicFragment.newInstance(position + 1);
}
@Override
public int getCount() {
return noOfItems;
}
@Override
public CharSequence getPageTitle(int position) {
return "TAB "+(position+1);
}
}
Layout DynamicTabsActivity:
<?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"
tools:context=".DynamicTabsActivity">
<Android.support.design.widget.AppBarLayout
Android:layout_width="match_parent"
Android:layout_height="wrap_content"
Android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<Android.support.v7.widget.Toolbar
Android:id="@+id/toolbar"
Android:layout_width="match_parent"
Android:layout_height="?attr/actionBarSize"
Android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
<Android.support.design.widget.TabLayout
Android:id="@+id/tabs"
Android:layout_width="match_parent"
Android:layout_height="wrap_content"
app:tabMode="scrollable"/>
</Android.support.design.widget.AppBarLayout>
<Android.support.v4.view.ViewPager
Android:id="@+id/viewpager"
Android:layout_width="match_parent"
Android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</Android.support.constraint.ConstraintLayout>
Fragment layout:
<?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=".DynamicFragment">
<TextView
Android:id="@+id/txtTabItemNumber"
Android:layout_width="wrap_content"
Android:layout_height="wrap_content"
Android:layout_centerInParent="true"
Android:text="TAB ONE"
Android:textSize="40dp"
Android:textStyle="bold" />
</RelativeLayout>
J'espère que ça aide...