I post API in HomePageActivity and get the Data, and I use the parameters to pass the data to NewFragment and show it.
Now, what I want is that when the user in NewFragment uses the swiperefresh, NewFragment will call the function in HomePageActivty, and the function will clean the data and recall the post API to get the new data and write into the parameters to send to NewFragment, then NewFragment will reload the new data and show it.
I can call the function in HomePageActivty and recall the post API, but when I want to reload the data to NewFragment, it can't show it!
How can I fix this issue?
Here is my HomePageActivity:
public class HomePageActivity extends AppCompatActivity {
public static String TAG = "HomePageActivity";
private postSectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;
public static String[] HomeToNew_user_icon, HomeToNew_user_name, HomeToNew_post_time, HomeToNew_post_text, HomeToNew_post_img, HomeToNew_post_likes, HomeToNew_post_comments, HomeToNew_post_pid = null;
public static int NewArrayLength;
private static String token;
public static Context context;
@SuppressLint("ResourceType")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_page);
context = HomePageActivity.this;
mSectionsPagerAdapter = new postSectionsPagerAdapter(getSupportFragmentManager());
mViewPager = findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
token = MainActivity.memoryToken;
Toast.makeText(this,"Token in HomePage: " + token, Toast.LENGTH_SHORT).show();
new JSONTask_New(HomePageActivity.this, token, "0", block).execute("api");
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
tabLayout.getTabAt(0).setText(R.string.New_Tab);
tabLayout.getTabAt(1).setText(R.string.Hot_Tab);
}
public static void refresh_New_Data(){
initData();
reLoad();
}
public static void initData(){
HomeToNew_user_icon = null;
HomeToNew_user_name = null;
HomeToNew_post_time = null;
HomeToNew_post_text = null;
HomeToNew_post_img = null;
HomeToNew_post_likes = null;
HomeToNew_post_comments = null;
HomeToNew_post_pid = null;
NewArrayLength = 0;
}
public static void reLoad(){
new JSONTask_New(context, token, "0", "1").execute("http://52.69.75.199/cp/posts/");
Log.e(TAG, "REFRESH New(HomePage) ApiCall posts!");
}
public class postSectionsPagerAdapter extends FragmentPagerAdapter {
public postSectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public int getCount() {
return 2;
}
@Override
public Fragment getItem(int position) {
switch (position){
case 0:
return new NewFragment();
case 1:
return new HotFragment();
}
return null;
}
}
// Post New (GET).
public static class JSONTask_New extends AsyncTask<String, String, String> {
private Context context;
private String token;
private String type;
private String block;
public JSONTask_New(Context context, String token, String type, String block) {
this.context = context;
this.token = token;
this.type = type;
this.block = block;
}
@Override
protected String doInBackground(String... params) {
try {
String SERVER_WS_URL = params[0];
LinkedHashMap<String, String> parameter = new LinkedHashMap<>();
parameter.put("token", token);
parameter.put("type", "0");
parameter.put("block", "0");
return ApiCall.getWebserviceCall(SERVER_WS_URL, parameter);
} catch (Exception e) {
return null;
}
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
try {
if (result != null) {
JSONObject jsonObject = new JSONObject(result.toString());
String code = jsonObject.getString("code");
String desc = jsonObject.getString("desc");
if (Integer.valueOf(code) == 1) {
JSONArray jsonArray = jsonObject.getJSONArray("list");
HomeToNew_user_icon = new String[jsonArray.length()];
HomeToNew_user_name = new String[jsonArray.length()];
HomeToNew_post_time = new String[jsonArray.length()];
HomeToNew_post_text = new String[jsonArray.length()];
HomeToNew_post_img = new String[jsonArray.length()];
HomeToNew_post_likes = new String[jsonArray.length()];
HomeToNew_post_pid = new String[jsonArray.length()];
HomeToNew_post_comments = new String[jsonArray.length()];
NewArrayLength = jsonArray.length();
for(int i = 0; i < jsonArray.length(); i++){
JSONObject jsonObject_item = jsonArray.getJSONObject(i);
HomeToNew_user_icon[i] = jsonObject_item.getString("head");
HomeToNew_user_name[i] = jsonObject_item.getString("name");
HomeToNew_post_time[i] = jsonObject_item.getString("created");
HomeToNew_post_text[i] = jsonObject_item.getString("txt");
HomeToNew_post_img[i] = jsonObject_item.getString("img");
HomeToNew_post_likes[i] = jsonObject_item.getString("gd");
HomeToNew_post_comments[i] = jsonObject_item.getString("co");
HomeToNew_post_pid[i] = jsonObject_item.getString("pid");
}
} else {
Toast.makeText(context, "NewPost API code: " + code + ", desc: " + desc, Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(context, "NewPost data null!", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
Here is my NewFragment:
public class NewFragment extends Fragment {
public static String TAG = "NewFragment";
private RecyclerView postcardRecycler;
private ArrayList<PostCard> post_data = new ArrayList<>();
private PostCardImageAdapter adapter;
private String[] user_icon, user_name, post_time, post_text, post_img, post_likes, post_comments, post_pid = null;
private SwipeRefreshLayout swipeRefreshLayout;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.new_layout, container, false);
user_icon = HomePageActivity.HomeToNew_user_icon;
user_name = HomePageActivity.HomeToNew_user_name;
post_time = HomePageActivity.HomeToNew_post_time;
post_text = HomePageActivity.HomeToNew_post_text;
post_img = HomePageActivity.HomeToNew_post_img;
post_likes = HomePageActivity.HomeToNew_post_likes;
post_comments = HomePageActivity.HomeToNew_post_comments;
post_pid = HomePageActivity.HomeToNew_post_pid;
postcardRecycler = view.findViewById(R.id.new_layout_recycler);
for(int i = 0; i < HomePageActivity.NewArrayLength; i++){
post_data.add(new PostCard(user_icon[i], user_name[i], post_time[i], post_text[i], post_img[i], post_likes[i], post_comments[i], post_pid[i]));
}
final LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
postcardRecycler.setLayoutManager(layoutManager);
adapter = new PostCardImageAdapter(getActivity(), post_data);
postcardRecycler.setAdapter(adapter);
swipeRefreshLayout = view.findViewById(R.id.new_layout_swipe_refresh);
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@SuppressLint("ResourceType")
@Override
public void onRefresh() {
Log.e(TAG, "Enter New onRefresh!");
HomePageActivity.refresh_New_Data();
NewFragment fragment = new NewFragment();
getFragmentManager().beginTransaction().replace(R.id.container, fragment).commit();
swipeRefreshLayout.setRefreshing(false);
}
});
return view;
}
}
Here is my new_layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/new_layout_swipe_refresh"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/new_layout_recycler"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" />
</android.support.v4.widget.SwipeRefreshLayout>
Any help would be highly appreciated.
