 Add fragments before main activity shows main content view
By : MintyFresh314
Date : March 29 2020, 07:55 AM
hop of those help? You could try replacing your fragments in your FragmentActivity, here is the idea partially coded: Suppose you have your fragments layout like this (main.xml): code :
<LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal">
<LinearLayout android:id="@+id/waiting" ...>
</LinearLayout>
<!-- hidden layout -->
<LinearLayout>
<LinearLayout android:id="@+id/layout_list_items" ...>
</LinearLayout>
<LinearLayout android:id="@+id/layout_detail" ...>
</LinearLayout>
</LinearLayout>
</LinearLayout>
public class FragmentsActivity extends FragmentActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.main);
Fragment fragA = new WaitingTransaction();
FragmentTransaction fragTrans = this.getSupportFragmentManager().beginTransaction();
fragTrans.add(R.main.waiting, fragA);
fragTrans.commit();
}
private void afterProcessing(){
//show hidden layout and make the waiting hidden through visibility, then add the fragment bellow...
FragmentTransaction fragTrans = this.getSupportFragmentManager().beginTransaction();
fragTrans.add(R.main.layout_list_items,
new FragmentList());
fragTrans.replace(R.main.layout_detail,
new FragmentB());
fragTrans.commit();
}
}
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 Load custom fragments in Navigation-Drawer's drawer and open corresponding fragments in the main layout
By : Rumeysa Nur Ozbay
Date : March 29 2020, 07:55 AM
may help you . You should create interfaces for your fragments and then use callback methods to alert the activity. Here is a sample code for you. code :
public class FirstDrawerFragment extends Fragment {
FirstDrawerListener mListener;
public interface FirstDrawerListener{
public void onSomeThingHappend(Data youWantToPass);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mListener = (FirstDrawerListener)activity;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragnavfirst, container , false);
v.findViewById(R.id.someview).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mListener.onSomeThingHappend(data);
}
});
return super.onCreateView(inflater, container, savedInstanceState);
}
}
public class SecondDrawerFragment extends Fragment {
SecondDrawerListener mListener;
public interface SecondDrawerListener{
public void onSomeThingHappendSecond(Data youWantToPass);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mListener = (SecondDrawerListener)activity;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragnavfirst, container , false);
v.findViewById(R.id.someview).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mListener.onSomeThingHappend(data);
}
});
return super.onCreateView(inflater, container, savedInstanceState);
}
}
public class YourActivity extends Activity FirstDrawerListener ,SecondDrawerListner{
@Override
public void onSomeThingHappend(Data youWantToPass){
//do your thing and add some fragments
//close drawer
}
@Override
public void onSomeThingHappendSecond(Data youWantToPass){
//do yout thing and add some fragments
//close drawer
}
}
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pass string from fragment main activity to fragments activity in viewpager
By : Nico De Niro
Date : March 29 2020, 07:55 AM
I hope this helps you . You don't have access directly to your fragments that reside in ViewPager so you can't reference them directly. What I am doing in these cases is send a broadcast message from Activity to Fragments. For this reason register a BroadcatReceiver in the fragment (either in onCreate or onCreateView - your decision)m, set a custom action for that receiver (ex. "my_package.actions.internal.BROADCAST_ACTION"), don't forget to unregister the receiver from complementary method. code :
public class Store_Swipe extends Fragment {
public static final String ACTION_INTENT = "my_package.action.UI_UPDATE";
protected BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if(ACTION_INTENT.equals(intent.getAction())) {
String value = intent.getStringExtra("UI_KEY");
updateUIOnReceiverValue(value);
}
}
};
private void updateUIOnReceiverValue(String value) {
// you probably want this:
kata_keyword.setText(value);
}
String KeyWord;
private TextView kata_keyword;
public static Fragment newInstance(Context context) {
Store_Swipe f = new Store_Swipe();
return f;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
IntentFilter filter = new IntentFilter(ACTION_INTENT);
LocalBroadcastManager.getInstance(getActivity()).registerReceiver(receiver, filter);
}
@Override
public void onDestroy() {
LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(receiver);
super.onDestroy();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Bundle bundle = this.getArguments();
KeyWord = bundle.getString("keyword");
View view = inflater.inflate(R.layout.store_swipe, container, false);
init(view);
return view;
}
void init(View view) {
kata_keyword = (TextView) view.findViewById(R.id.keyword);
ImageView image = (ImageView) view.findViewById(R.id.image_error);
kata_keyword.setText(KeyWord);
}
}
protected void sendValueToFragments(String value) {
// it has to be the same name as in the fragment
Intent intent = new Intent("my_package.action.UI_UPDATE");
intent.putExtra("UI_KEY", value);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
findViewById(R.id.button_id).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String valueThatYouWantToSend = null; /// just the value
sendValueToFragments(valueThatYouWantToSend);
}
});
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i have a floating button in main activity.i want to clear all fragments and return to Main Activity
By : sree sanjeev
Date : March 29 2020, 07:55 AM
I hope this helps . Trick is simply you start main activity on FloatingActionButton onClick event code :
bt_home.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(getActivity(), MAinActivity.class));
//or start home fragment
Fragment home = new HomeFragment();
FragmentManager FM = getFragmentManager();
FM.beginTransaction().replace(R.id.content_frame, home).commit();
}
});
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How to make the fragments load data from a service even before they are being displayed in the main activity?
By : Fear Cindy
Date : March 29 2020, 07:55 AM
To fix this issue I solved it following this guide: https://medium.com/@oluwabukunmi.aluko/bottom-navigation-view-with-fragments-a074bfd08711Instead of replace(), it says I have to use show() and hide(). I only had to modify my MainActivity: code :
final ColorsFragment colorsFragment = new ColorsFragment();
final LyricsFragment lyricsFragment = new LyricsFragment();
final LastFmFragment lastFmFragment = new LastFmFragment();
final FragmentManager fragmentManager = getSupportFragmentManager();
Fragment activeFragment = colorsFragment;
BottomNavigationView bottomNavigationView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (!isNotificationServiceRunning()) {
startActivity(new Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS"));
}
bottomNavigationView = (BottomNavigationView) findViewById(R.id.bottom_navigation);
bottomNavigationView.setOnNavigationItemSelectedListener(menuItem -> {
switch (menuItem.getItemId()) {
case R.id.nav_colors:
fragmentManager.beginTransaction().hide(activeFragment).show(colorsFragment).commit();
activeFragment = colorsFragment;
break;
case R.id.nav_lyrics:
fragmentManager.beginTransaction().hide(activeFragment).show(lyricsFragment).commit();
activeFragment = lyricsFragment;
break;
case R.id.nav_last_fm:
fragmentManager.beginTransaction().hide(activeFragment).show(lastFmFragment).commit();
activeFragment = lastFmFragment;
break;
}
return true;
});
fragmentManager.beginTransaction().add(R.id.fragment_container, lastFmFragment, "2").hide(lastFmFragment).commit();
fragmentManager.beginTransaction().add(R.id.fragment_container, lyricsFragment, "1").hide(lyricsFragment).commit();
fragmentManager.beginTransaction().add(R.id.fragment_container, colorsFragment, "0").commit();
}
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code :
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