我想将数据从Parent Fragment传递给Tabbed Fragment(子)以进行初始数据传递(当父片段第一次加载时)我使用了Bundle数据。当在子片段中的嵌套片段中时,我调用PopbackStack()以便返回按钮单击。在那里我需要更新之前传递到子选项卡片段的包数据。捆绑数据没有获得更新的数据集
父片段 - 初始状态
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
ViewPager viewPager = (ViewPager) getView().findViewById(R.id.pager);
CropFragAdapter adapter = new CropFragAdapter(getChildFragmentManager());
Fragment tabfragment1 = new CropAlreadyPlantedFragment();
Fragment tabfragment2 = new FuturePlantedFragment();
Bundle b = new Bundle();
b.putString("RAWJsonArr", INITAL_DATA_FOR_TAB_1);
tabfragment1.setArguments(b);
b.putString("RAWJsonArr", INITAL_DATA_FOR_TAB_2);
tabfragment2.setArguments(b);
adapter.addFragment(tabfragment1, "Already Planted");
adapter.addFragment(tabfragment2, "Future Planted");
viewPager.setAdapter(adapter);
TabLayout tabLayout = (TabLayout) getView().findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
儿童片段 - 标签片段
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
cropAlreadyPlantedModel = new CropAlreadyPlantedModel();
String RAWJsonArr =null;
Bundle b = getArguments();
if (b != null) {
RAWJsonArr = b.getString("RAWJsonArr");
JSONOBJ = null;
try {
DATASET = new JSONArray(RAWJsonArr);
} catch (JSONException e) {
e.printStackTrace();
}
}
View view = cropAlreadyPlantedModel.getCropItems(inflater, container, getContext(), DATASET);
return view;
}
儿童 - >儿童片段按钮单击
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
saveBtn = (Button) getView().findViewById(R.id.button);
saveBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
JSONObject obj = new JSONObject();
try {
obj.put("crop_details",DATASETARRY);
} catch (JSONException e) {
e.printStackTrace();
}
if(SELECTED_TAB ==0) {
childDataCropDetails = obj; //static variable in Parent Fragment
}
else if(SELECTED_TAB ==1){
Future_childDataCropDetails = obj; //static variable in Parent Fragment
}
FragmentManager manager = getActivity().getSupportFragmentManager();
manager.popBackStack();
}
});
}
我想念的是什么?请帮忙
答案 0 :(得分:0)
问题是我在Child Fragment中谈论的范围是错误的(不是当前范围)。
Bundle b = this.getArguments();