TabLayout 始终显示最后一个片段
TabLayout always shows the last fragment
我正在尝试根据参数 Radios.newInstance(int type)
的值(0 或 1)从 2 个不同的片段中填充 Tablayout
第一个片段包含所有电台,第二个片段包含最喜欢的电台
但它总是向我显示包含 最喜欢的电台
的片段
public class HomeFragment extends Fragment {
public static final String TAG = "HomeFragment";
private SectionsPagerAdapter mSectionsPagerAdapter;
private ProgressBar mProgressView;
private ViewGroup mContainer;
private BaseActivity activity;
public HomeFragment() {
}
public static HomeFragment newInstance() {
return new HomeFragment();
}
public void showProgress(final boolean show) {
mContainer.setVisibility(show ? View.GONE : View.VISIBLE);
mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
activity = (BaseActivity) getActivity();
activity.findViewById(R.id.tabs).setVisibility(View.VISIBLE);
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
activity.getSupportActionBar().show();
mProgressView = (ProgressBar) activity.findViewById(R.id.progress);
mContainer = container;
showProgress(true);
ViewPager mViewPager = (ViewPager) view.findViewById(R.id.container);
List<Fragment> fragments = new Vector<Fragment>();
fragments.add(RadiosFragment.newInstance(0));
fragments.add(RadiosFragment.newInstance(1));
mSectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager(), fragments);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) activity.findViewById(R.id.tabs);
tabLayout.setVisibility(View.VISIBLE);
tabLayout.setTabMode(TabLayout.GRAVITY_CENTER);
tabLayout.setupWithViewPager(mViewPager);
showProgress(false);
return view;
}
public class SectionsPagerAdapter extends FragmentStatePagerAdapter {
private List<Fragment> mFragments;
public SectionsPagerAdapter(FragmentManager fm, List<Fragment> fragments) {
super(fm);
mFragments = fragments;
}
@Override
public Fragment getItem(int position) {
return mFragments.get(position);
}
@Override
public int getCount() {
return 2;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "RADIOS";
case 1:
return "FAVORITES";
default:
return null;
}
}
}
}
这是我要显示的片段,如果type == 0
它显示所有电台,如果type == 1
它显示最喜欢的电台
public class RadiosFragment extends Fragment {
private static String TYPE = "NONE";
private FirebaseRecyclerAdapter<FireBaseManager.Radio, ViewHolder> mAdapter = null;
private FirebaseRecyclerAdapter<FireBaseManager.Favorites, ViewHolder> mAdapter_fav = null;
private RecyclerView recyclerView;
public ArrayList<FireBaseManager.Favorites> listOrder;
public RadiosFragment() { }
public static RadiosFragment newInstance(int type) {
if (type == 1 )
TYPE = "favorite";
else
TYPE = "radios";
RadiosFragment fragment = new RadiosFragment();
Bundle args = new Bundle();
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_item_list, container, false);
final Context context = view.getContext();
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
recyclerView = (RecyclerView) view.findViewById(R.id.list);
recyclerView.setLayoutManager(new LinearLayoutManager(context));
Query query = FireBaseManager.Radio.Ref.orderByChild(FireBaseManager.Radio.Table.Name.text);
ProgressDialog progressDialog = new ProgressDialog(getContext());
if (TYPE == "favorite"){
....
@Override
protected void populateViewHolder(ViewHolder viewHolder, FireBaseManager.Favorites model, int position) {
...
viewHolder.Initialize(Data);
...
}
};
recyclerView.setAdapter(mAdapter_fav);
}
});
}
else if(TYPE == "radios") {
....
@Override
protected void populateViewHolder(ViewHolder viewHolder, FireBaseManager.Radio model, int position) {
...
viewHolder.Initialize(Data);
...
});
}
};
recyclerView.setAdapter(mAdapter);
});
}
return view;
}
}
我认为问题与 onCreateView / onCreate 有关,但我不确定,请你帮帮我。
这可能对您有所帮助。
mViewPager.setCurrentItem(0);
在使用 viewpager
设置 tabLayout
后添加此行
非常感谢您的回答,我找到了解决问题的方法。
解决方法是在Tablayout上添加Listener,拦截事件
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
if (tab.getPosition() == 0)
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.flContent, RadiosFragment.newInstance(0), FavoriteActivity.TAG).addToBackStack(null).commit();
if (tab.getPosition() == 1)
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.flContent, RadiosFragment.newInstance(1), FavoriteActivity.TAG).addToBackStack(null).commit();
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
我正在尝试根据参数 Radios.newInstance(int type)
Tablayout
第一个片段包含所有电台,第二个片段包含最喜欢的电台
但它总是向我显示包含 最喜欢的电台
的片段public class HomeFragment extends Fragment {
public static final String TAG = "HomeFragment";
private SectionsPagerAdapter mSectionsPagerAdapter;
private ProgressBar mProgressView;
private ViewGroup mContainer;
private BaseActivity activity;
public HomeFragment() {
}
public static HomeFragment newInstance() {
return new HomeFragment();
}
public void showProgress(final boolean show) {
mContainer.setVisibility(show ? View.GONE : View.VISIBLE);
mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
activity = (BaseActivity) getActivity();
activity.findViewById(R.id.tabs).setVisibility(View.VISIBLE);
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
activity.getSupportActionBar().show();
mProgressView = (ProgressBar) activity.findViewById(R.id.progress);
mContainer = container;
showProgress(true);
ViewPager mViewPager = (ViewPager) view.findViewById(R.id.container);
List<Fragment> fragments = new Vector<Fragment>();
fragments.add(RadiosFragment.newInstance(0));
fragments.add(RadiosFragment.newInstance(1));
mSectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager(), fragments);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) activity.findViewById(R.id.tabs);
tabLayout.setVisibility(View.VISIBLE);
tabLayout.setTabMode(TabLayout.GRAVITY_CENTER);
tabLayout.setupWithViewPager(mViewPager);
showProgress(false);
return view;
}
public class SectionsPagerAdapter extends FragmentStatePagerAdapter {
private List<Fragment> mFragments;
public SectionsPagerAdapter(FragmentManager fm, List<Fragment> fragments) {
super(fm);
mFragments = fragments;
}
@Override
public Fragment getItem(int position) {
return mFragments.get(position);
}
@Override
public int getCount() {
return 2;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "RADIOS";
case 1:
return "FAVORITES";
default:
return null;
}
}
}
}
这是我要显示的片段,如果type == 0
它显示所有电台,如果type == 1
它显示最喜欢的电台
public class RadiosFragment extends Fragment {
private static String TYPE = "NONE";
private FirebaseRecyclerAdapter<FireBaseManager.Radio, ViewHolder> mAdapter = null;
private FirebaseRecyclerAdapter<FireBaseManager.Favorites, ViewHolder> mAdapter_fav = null;
private RecyclerView recyclerView;
public ArrayList<FireBaseManager.Favorites> listOrder;
public RadiosFragment() { }
public static RadiosFragment newInstance(int type) {
if (type == 1 )
TYPE = "favorite";
else
TYPE = "radios";
RadiosFragment fragment = new RadiosFragment();
Bundle args = new Bundle();
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_item_list, container, false);
final Context context = view.getContext();
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
recyclerView = (RecyclerView) view.findViewById(R.id.list);
recyclerView.setLayoutManager(new LinearLayoutManager(context));
Query query = FireBaseManager.Radio.Ref.orderByChild(FireBaseManager.Radio.Table.Name.text);
ProgressDialog progressDialog = new ProgressDialog(getContext());
if (TYPE == "favorite"){
....
@Override
protected void populateViewHolder(ViewHolder viewHolder, FireBaseManager.Favorites model, int position) {
...
viewHolder.Initialize(Data);
...
}
};
recyclerView.setAdapter(mAdapter_fav);
}
});
}
else if(TYPE == "radios") {
....
@Override
protected void populateViewHolder(ViewHolder viewHolder, FireBaseManager.Radio model, int position) {
...
viewHolder.Initialize(Data);
...
});
}
};
recyclerView.setAdapter(mAdapter);
});
}
return view;
}
}
我认为问题与 onCreateView / onCreate 有关,但我不确定,请你帮帮我。
这可能对您有所帮助。
mViewPager.setCurrentItem(0);
在使用 viewpager
tabLayout
后添加此行
非常感谢您的回答,我找到了解决问题的方法。
解决方法是在Tablayout上添加Listener,拦截事件
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
if (tab.getPosition() == 0)
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.flContent, RadiosFragment.newInstance(0), FavoriteActivity.TAG).addToBackStack(null).commit();
if (tab.getPosition() == 1)
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.flContent, RadiosFragment.newInstance(1), FavoriteActivity.TAG).addToBackStack(null).commit();
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});