[英]How to handle recyclerview click event on fragment?
我知道这个问题已经在社区中提出了,但我仍然无法解决我的问题。 这就是为什么再次发布这个。 如何将数据从 recyclerview 适配器传递到片段。 我已成功将数据从适配器传递到活动。 但无法获得如何将数据从适配器传递到片段。 我的数据库中有两个参数 (1) mSliderImage 和 (2) mTitle。 mSliderImage 显示在主页片段上。 但现在我想要当用户点击滑块的特定图像时,会打开一个新片段并显示 mTitle。 我能够根据图像位置单击图像滑块成功打开新片段。 但不知道如何在该片段中传递 mTitle。 请有人帮我完成整个代码,因为我必须在 1 月 17 日之前提交这个大学水平的项目。 我只发布重要的代码而不是我的整个代码。 我只想要如何将 mSliderTitle 从适配器传递到片段的编码解决方案。 当我单击 Image Slider 的某些图像时。
下面是我的代码:
在模型中,我已经通过了上面已经提到的 2 个 Getter 和 Setter。 (1) mSliderImage 和 (2) mTitle。
滑块适配器:
public class SliderImageAdapter extends SliderViewAdapter<SliderImageAdapter.SliderAdapterVH>{
public List<Banner> bannerList;
public Context context;
private OnItemClicked onClick;
public interface OnItemClicked {
void onItemClick(int position);
}
public SliderImageAdapter(Context context, List<Banner> bannerList, OnItemClicked onClick) {
this.bannerList = bannerList;
this.context = context;
this.onClick = onClick;
}
@Override
public SliderAdapterVH onCreateViewHolder(ViewGroup parent) {
View inflate = LayoutInflater.from(parent.getContext()).inflate(R.layout.image_slider_myshop, parent, false);
return new SliderAdapterVH(inflate);
}
@Override
public void onBindViewHolder(final SliderAdapterVH viewHolder, final int position) {
Glide.with(viewHolder.itemView)
.load(bannerList.get(position).getmSliderImage())
.into(viewHolder.imageViewBackground);
viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onClick.onItemClick(position);
}
});
}
@Override
public int getCount() {
return bannerList.size();
}
public int getItemPosition (Object object) {
return POSITION_NONE;
}
public void setOnClick(OnItemClicked onClick) {
this.onClick = onClick;
}
class SliderAdapterVH extends SliderViewAdapter.ViewHolder {
View itemView;
ImageView imageViewBackground;
public SliderAdapterVH(View itemView) {
super(itemView);
imageViewBackground = itemView.findViewById(R.id.iv_auto_image_slider);
this.itemView = itemView;
}
}
主页片段:(此处显示了图像滑块。我希望当用户单击新片段时打开并显示 mTitle)。
public class HomeFragment extends Fragment implements SliderImageAdapter.OnItemClicked {
private SliderImageAdapter sliderImageAdapter;
private List<Banner> bannerList;
bannerList = new ArrayList<>();
sliderImageAdapter = new SliderImageAdapter(getActivity(), bannerList, this);
@Override
public void onItemClick(int position) {
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.add(R.id.fragment_container_dashboard, SliderClickFragment.newInstance());
ft.addToBackStack(null);
ft.commit();
}
滑块单击片段 XML:
<androidx.coordinatorlayout.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">
<TextView
android:id="@+id/mSliderTitle"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
Slider Click Fragment Java:(这里我想在用户单击图像时显示 mTitle)
public class SliderClickFragment extends Fragment {
public static SliderClickFragment newInstance() {
Bundle args = new Bundle();
SliderClickFragment fragment = new SliderClickFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.slider_click_listner,container,false);
return view;
}
}
尝试这个。 我还没有测试过,但这个流程应该能达到你想要实现的目标。
HomeFragment.java
public class HomeFragment extends Fragment implements SliderImageAdapter.OnItemClicked {
private SliderImageAdapter sliderImageAdapter;
private List<Banner> bannerList;
bannerList = new ArrayList<>();
sliderImageAdapter = new SliderImageAdapter(getActivity(), bannerList, this);
@Override
public void onItemClick(int position) {
//GET THE TITLE STRING HERE
String title = bannerList.get(position).getmSliderTitle();
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
//PASS THIS TITLE TO THE FRAGMENT INSTANCE LIKE THIS
ft.add(R.id.fragment_container_dashboard, SliderClickFragment.newInstance(title));
ft.addToBackStack(null);
ft.commit();
}
SliderClickFragment.java
public class SliderClickFragment extends Fragment {
//EDIT the newInstance Method definition to include title like this:
public static SliderClickFragment newInstance(String title) {
Bundle args = new Bundle();
//PASS THE STRING IN THE BUNDLE WHICH WILL THEN BE FETCHED IN ONCREATEVIEW LATER LIKE THIS
args.putString("title", title);
SliderClickFragment fragment = new SliderClickFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.slider_click_listner,container,false);
//GET THE STRING HERE AND THEN USE IT HOWEVER YOU LIKE
String title = getArguments().getString("title");
return view;
}
}
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