Android 问题:通过选项卡查看片段
我试着在没有任何答案的情况下发布类似的问题,尽管我想再次发布 我遇到的问题是通过选项卡查看片段,我在一个应用程序栏中有3个选项卡显示为ViewPager和FragmentPagerAdapter 问题在于,当活动开始时,其中一个选项卡的行为不一致,在首次登录到应用程序和活动时,它将显示片段(视频剪辑)的内容,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,选择该特定选项卡不会显示任何内容,尽管在Logcat中,我可以看出它正在检索与应该显示的视频剪辑相关的数据,也可以追溯到我在Logcat中看到的活动,即即使我选择了另一个选项卡,也正在检索来自其他两个选项卡的(图片)数据 设置如下: 主要活动Android 问题:通过选项卡查看片段,android,android-fragments,tabs,Android,Android Fragments,Tabs,我试着在没有任何答案的情况下发布类似的问题,尽管我想再次发布 我遇到的问题是通过选项卡查看片段,我在一个应用程序栏中有3个选项卡显示为ViewPager和FragmentPagerAdapter 问题在于,当活动开始时,其中一个选项卡的行为不一致,在首次登录到应用程序和活动时,它将显示片段(视频剪辑)的内容,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,选择该特定选项卡不会显示任何内容,尽管在Logcat中,我可以看出它正在检索与应该显示的视频剪辑相关的数据,也可以追溯到我在Log
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);
}
}
公共类成员扩展了AppCompatActivity{
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.member);
Firebase.setAndroidContext(this);
把(这个)绑起来;
//将工具栏添加到主屏幕
Toolbar Toolbar=(Toolbar)findViewById(R.id.Toolbar);
设置支持操作栏(工具栏);
//为每个选项卡设置ViewPager
ViewPager ViewPager=(ViewPager)findViewById(R.id.ViewPager);
设置viewPager(viewPager);
//在工具栏内设置选项卡
TabLayout tabs=(TabLayout)findviewbyd(R.id.tabs);
选项卡。使用viewPager进行设置(viewPager);
}
专用无效设置ViewPager(ViewPager ViewPager){
适配器适配器=新适配器(getSupportFragmentManager());
addFragment(新的PicContentMMFragment(),“图片”);
addFragment(新的VidContentFragment(),“视频”);
addFragment(新位置contentFragment(),“位置”);
viewPager.setAdapter(适配器);
}
静态类适配器扩展FragmentPagerAdapter{
私有最终列表MFFragmentList=new ArrayList();
私有最终列表MFFragmentTitleList=new ArrayList();
公共适配器(碎片管理器){
高级经理;
}
@凌驾
公共片段getItem(int位置){
返回MFFragmentList.get(位置);
}
@凌驾
public int getCount(){
返回MFFragmentList.size();
}
public void addFragment(片段片段,字符串标题){
添加(片段);
MFFragmentTitleList.add(标题);
}
@凌驾
公共字符序列getPageTitle(int位置){
返回MFFragmentTitleList.get(位置);
}
}
好吧,正如一位用户在帖子上评论的那样,问题可能来自特定的片段本身,而不是标签和Viewpager下面的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;
}
}
公共类VidContentFragment扩展了android.support.v4.app.Fragment{
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
最终回收视图回收视图=(回收视图)充气器。充气(
R.layout.recycler_视图,容器,假);
Log.i(“MyTag_onCreate”、“vidContentFragment_Loaded”);
ContentAdapter=新的ContentAdapter(recyclerView.getContext());
recyclerView.setAdapter(适配器);
recyclerView.setHasFixedSize(true);
setLayoutManager(新的LinearLayoutManager(getActivity());
返回回收视图;
}
公共静态类ViewHolder扩展了RecyclerView.ViewHolder{
公共视频浏览视频;
公共文本视图authorName;
公共文本视图评级值;
公共文本视图位置值;
公共评级杆评级B;
公共按钮提交;
公共线路布局地名持有人;
公共评级;
公共视口保持架(更平坦的充气器、视口组父视图){
超级(充气机。充气(右布局。项目卡,父项,假));
authorName=(TextView)itemView.findViewById(R.id.card\u title);
ratingValue=(TextView)itemView.findViewById(R.id.ratingValue);
locationValue=(TextView)itemView.findViewById(R.id.locationValue);
video=(VideoView)itemView.findviewbyd(R.id.placeVid);
ratingB=(RatingBar)itemView.findViewById(R.id.ratingBarMM);
ratingB.setOnRatingBarChangeListener(新RatingBar.OnRatingBarChangeListener(){
@凌驾
更改了公共无效率(率条率条、浮动率条、布尔值fromUser){
newRating=(int)ratingB.getRating();
}
});
Submitting=(按钮)itemView.findViewById(R.id.SubmittingMM);
submitting.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图v){
public_id=publicID[getPosition()];
Log.i(“MyTag_Rating”,public_id);
公共静态类ContentAdapter扩展了RecyclerView.Adapter{
//在RecyclerView中设置列表的编号。
私有上下文;
公共内容适配器(上下文){
this.mContext=上下文;
}
@凌驾
public ViewHolder onCreateViewHolder(视图组父级,int-viewType){
返回新的ViewHolder(LayoutInflater.from(parent.getContext()),parent);
}
@凌驾
公共无效onBindViewHolder(最终ViewHolder,内部位置){
holder.authorName.setText(作者[职位]);
holder.ratingValue.setText(ratingV[位置]);
holder.locationValue.setText(locationV[position]);
urivideo=Uri.parse(mVideos[position]);
holder.video.setVideoURI(视频);
holder.video.setMediaController(新MediaController(mContext));
holder.video.requestFocus();
支架。视频。seekTo(1000);
holder.video.pause();
试一试{
字符串url1=mVideos[position];
URL ulrn=新URL(url1);
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;
}
}
}
}