我试图在没有任何答案的情况下发布类似的问题，但是再次发布。
我遇到的问题是通过Tabs查看Fragment，我在ViewPar＆amp;显示的AppBar中有3个Tabs。 FragmentPagerAdapter。
问题是当活动开始时，其中一个选项卡在登录到应用程序时没有以一致的方式运行。活动第一次它会显示片段的内容（视频剪辑），但在应用程序中的活动之间切换，并返回到包含3个选项卡的活动，选择特定的选项卡不显示任何内容，在Logcat中，我可以告诉它正在检索与应该显示的Vid Clip相关的数据，也回到我在Logcat中看到的Activity，即使我选择了不同的Tab，（图片）正在检索来自其他2个Tab的数据！ ？
设置如下;
主要活动;
public class Member extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.member);
Firebase.setAndroidContext(this);
ButterKnife.bind(this);
// Adding Toolbar to Main screen
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Setting ViewPager for each Tabs
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
// Set Tabs inside Toolbar
TabLayout tabs = (TabLayout) findViewById(R.id.tabs);
tabs.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
Adapter adapter = new Adapter(getSupportFragmentManager());
adapter.addFragment(new PicContentMMFragment(), "Pictures");
adapter.addFragment(new VidContentFragment(), "Videos");
adapter.addFragment(new LocationsContentFragment(), "Locations");
viewPager.setAdapter(adapter);
}
static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public Adapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
好吧，正如其中一位评论帖子的用户指出，问题可能来自特定的fragemnt本身而不是Tabs和Viewpager跟随的方式是VidContentFragment;
public class VidContentFragment extends android.support.v4.app.Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final RecyclerView recyclerView = (RecyclerView) inflater.inflate(
R.layout.recycler_view, container, false);
Log.i("MyTag_onCreate","vidContentFragment_Loaded");
ContentAdapter adapter = new ContentAdapter(recyclerView.getContext());
recyclerView.setAdapter(adapter);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
return recyclerView;
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public VideoView video;
public TextView authorName;
public TextView ratingValue;
public TextView locationValue;
public RatingBar ratingB;
public Button submitRating;
public LinearLayout placeNameHolder;
public int newRating;
public ViewHolder(LayoutInflater inflater, ViewGroup parent) {
super(inflater.inflate(R.layout.item_card_vid, parent, false));
authorName = (TextView) itemView.findViewById(R.id.card_title);
ratingValue = (TextView) itemView.findViewById(R.id.ratingValue);
locationValue = (TextView) itemView.findViewById(R.id.locationValue);
video = (VideoView) itemView.findViewById(R.id.placeVid);
ratingB = (RatingBar)itemView.findViewById(R.id.ratingBarMM);
ratingB.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
newRating = (int) ratingB.getRating();
}
});
submitRating = (Button) itemView.findViewById(R.id.submitRatingMM);
submitRating.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
public_id = publicID[getPosition()];
Log.i("MyTag_Rating",public_id);
public static class ContentAdapter extends RecyclerView.Adapter<ViewHolder> {
// Set numbers of List in RecyclerView.
private Context mContext;
public ContentAdapter(Context context) {
this.mContext = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new ViewHolder(LayoutInflater.from(parent.getContext()), parent);
}
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
holder.authorName.setText(author[position]);
holder.ratingValue.setText(ratingV[position]);
holder.locationValue.setText(locationV[position]);
Uri video = Uri.parse(mVideos[position]);
holder.video.setVideoURI(video);
holder.video.setMediaController(new MediaController(mContext));
holder.video.requestFocus();
holder.video.seekTo(1000);
holder.video.pause();
try{
String url1 = mVideos[position];
URL ulrn = new URL(url1);
HttpURLConnection con = (HttpURLConnection)ulrn.openConnection();
InputStream is = con.getInputStream();
Bitmap bmp = BitmapFactory.decodeStream(is);
if (null != bmp)
Palette.generateAsync(bmp, new Palette.PaletteAsyncListener() {
public void onGenerated(Palette palette) {
int bgColor = palette.getVibrantColor(mContext.getResources().getColor(android.R.color.black));
holder.placeNameHolder.setBackgroundColor(bgColor);
}
});
else
Log.e("MyTag_BMP","The Bitmap is NULL");
}catch (Exception e){
}
}
@Override
public int getItemCount() {
return LENGTH;
}
}
}
代码的某些部分（与从firebase检索数据有关）被省略以缩短它。
虽然其他2个片段的组织方式相同，但这个片段的行为是不一致的？
答案 0 :(得分：1)
以下是带有viewholder的适配器版本，我知道这对您说可能有帮助的recyclerview。您需要重构以根据您的情况进行调整。我主要是为了帮助展示裸露的互动而扼杀它。
public class AnimalAdapter extends RecyclerView.Adapter<AnimalAdapter.AnimalCardViewHolder>{
private List<Animals> animalList;
public AnimalAdapter adapter = this;
Context context;
public AnimalAdapter(List<Animals> animalList, Context context) {
this.animalList = animalList;
this.context = context;
this.setInterface((iAdapterInterface) context);
}
@Override
public int getItemCount() {
return animalList.size();
}
@Override
public void onBindViewHolder(AnimalCardViewHolder holder, int position) {
Animals animal = animalList.get(position);
holder.txtName.setText(animal.getName());
holder.txtType.setText(animal.getType());
}
@Override
public AnimalCardViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.animal_card_view, parent, false);
return new AnimalCardViewHolder(itemView);
}
public class AnimalCardViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
protected TextView txtName;
protected TextView txtType;
public AnimalCardViewHolder(final View itemView) {
super(itemView);
txtName = (TextView) itemView.findViewById(R.id.txtName);
txtType = (TextView) itemView.findViewById(R.id.txtType);
imgClose = (ImageView) itemView.findViewById(R.id.txtRemove);
listItem = itemView.findViewById(R.id.list_item);
listItem.setOnClickListener(this);
imgClose.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.txtRemove:
break;
case R.id.list_item:
break;
}
}
}
}