Actually i am sending bundle from my base adapter to a new fragment. how I send bundle from adapter to frament.
here is my adapter code:
textViewItemName.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ExpandableCategoryList fragment = new ExpandableCategoryList();
Bundle bundle = new Bundle();
bundle.putInt("Id",Id);
fragment.setArguments(bundle);
((MainActivity)context).replaceFragment(fragment,
"TAG",null,false);
//Log.e("Hello",fragment.toString());
}
});
and i am receiving mu bundle as
int id = getArguments().getInt("Id",0);
but i am getting that getArguments().getInt() throws null point exception. How I handle it
In your Adapter, write the code
ExpandableCategoryList fragmentProductLaptop = new ExpandableCategoryList();
FragmentTransaction fragmentTransaction=context.getSupportFragmentManager().beginTransaction();
Bundle args = new Bundle();
args.putString("Name",category.getCategoryName());
args.putInt("Id",category.getId());
fragmentProductLaptop.setArguments(bundle);
fragmentTransaction.replace(R.id. homeFrameLayout, fragmentProductLaptop);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
In your Fragment Class, write the below code :
public class ExpandableCategoryList extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
String name = getArguments().getString("Name");
String Id = getArguments().getInt("Id",0);
return inflater.inflate(R.layout.fragment, container, false);
}
}
Related
I want to pass data from Activity to Fragment using Bundle (I used Bundle to passing data between 2 Fragment, and that's worked).
In my Activity I have a ListView, in the OnItemClickListener I want to open a new Fragment, and the Item, which clicked pass through the Activity to this Fragment. But the Item is null, so basically nothing is send to the Fragment.
Here is my Activity:
public class Jegyek extends AppCompatActivity {
View v;
DB mydb;
ListView listView;
private String teszt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_jegyek);
listView = (ListView)findViewById(R.id.jegyekLista);
mydb = new DB(this);
final ArrayList<String> thelist = new ArrayList<>();
Cursor data = mydb.getTantargynev();
if (data.getCount() == 0) {
Toast.makeText(this, "Nincs jegyek hozzáadva", Toast.LENGTH_SHORT).show();
}
else {
while (data.moveToNext()) {
thelist.add(data.getString(0));
ListAdapter listadapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, thelist);
listView.setAdapter(listadapter);
}
listView.setOnItemClickListener(
new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
teszt = thelist.get(i);
Bundle bundle = new Bundle();
bundle.putString("Tantárgy neve", teszt);
Toast.makeText(Jegyek.this, teszt, Toast.LENGTH_SHORT).show();
Fragment jegyekAllando = new jegyekAllando();
jegyekAllando.setArguments(bundle);
FragmentTransaction FragTan = getSupportFragmentManager().beginTransaction();
FragTan.replace(R.id.jegyekMenu, jegyekAllando);
ListView listaNezet = (ListView) findViewById(R.id.jegyekLista);
listaNezet.setVisibility(View.GONE);
FragTan.commit();
}
}
);
}
}
public String getTanNev () {
System.out.println("WARNING: "+ teszt);
return teszt;
}
}
And my Fragment:
public class jegyekAllando extends Fragment {
DB mydb;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_jegyek_allando, container, false);
Bundle bundle = new Bundle();
String tanNev = bundle.getStrin
g("Tantárgy neve");
Jegyek jegyAct = new Jegyek();
String tanNevv = jegyAct.getTanNev();
mydb = new DB(getActivity());
String jegyAtlag =String.valueOf(mydb.JegyekAtlaga(tanNev));
String jegyDarab =String.valueOf(mydb.JegyekDarabszama(tanNev));
return rootView;
}
}
When I realized, that the bundle is null, I try to pass that List Item through getter, so I changed my Fragment code for that:
Jegyek jegyek = new Jegyek();
String jegy = jegyek.getTanNev();
But that's not solved my problem, so I back to the Bundle, which also have some problem, but I can't find it. Intresting, that in the OnItemClickListener when I Toast the Item it's correct and works, but when I want to display in the console or pass to the Fragment, the value's is null.
From Activity you send data with intent as:
Bundle bundle = new Bundle();
bundle.putString("edttext", "From Activity");
// set Fragmentclass Arguments
Fragmentclass fragobj = new Fragmentclass();
fragobj.setArguments(bundle);
and in Fragment onCreateView method:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
String strtext = getArguments().getString("edttext");
return inflater.inflate(R.layout.fragment, container, false);
}
Hope this helps
Please follow this example:
In your activity, Pass data like
Bundle bundle = new Bundle();
bundle.putString("test", "Test Data");
// set in your testFragment Arguments
TestFragment testFragment = new TestFragment();
testFragment.setArguments(bundle);
And Receive Data from your TestFragment Like
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
String text = getArguments().getString("test");
return inflater.inflate(R.layout.fragment, container, false);
}
In fragment "jegyekAllando" you must get your string from onCreate() with Bundle data = getArguments(), but you create new bundle.
I'm trying to pass a CategoryID from Firebase from one fragment to another
using an ImageView Click but my app crashes when an ImageView is clicked.
Here is my code;
MenuFragment.java
FirebaseRecyclerAdapter<Category, MenuViewHolder> adapter;
viewHolder.setItemClickListener(new ItemClickListener() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
CarListFragment cfragment= new CarListFragment ();
Bundle bundle = new Bundle();
bundle.putString("CategoryID",adapter.getRef(position).getKey());
cfragment.setArguments(bundle);
getFragmentManager().beginTransaction()
.replace(R.id.frame_main, cfragment, cfragment.getTag())
.addToBackStack(null)
.commit();
}
});
CarListFragment.java
String CategoryID="";
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v= inflater.inflate(R.layout.fragment_car_list, container, false);
Bundle bundle = this.getArguments();
if (bundle != null) {
CategoryID=getActivity().getIntent().getStringExtra("CategoryID");
}
if(!CategoryID.isEmpty()&& CategoryID!=null){
loadCarList(CategoryID);
}
return v;
}
Logcat
Use bundlebecause it has the data
Bundle bundle = this.getArguments();
if (bundle != null) {
CategoryID = bundle.getString("CategoryID");
// ^^^^^^
}
instead of
CategoryID=getActivity().getIntent().getStringExtra("CategoryID");
because getActivity().getIntent() will give you an Intent object which was previously used to start your activity
use this:
CarListFragment cfragment= new CarListFragment ();
Bundle bundle = new Bundle();
bundle.putString("CategoryID", adapter.getRef(position));
cfragment.setArguments(bundle);
getFragmentManager().beginTransaction()
.replace(R.id.frame_main, cfragment, cfragment.getTag())
.addToBackStack(null)
.commit();
get String:
String str = getArguments().getString("my_string");
I have a web-view in a fragment. I want to load the webview by selecting a url from the main activity. For example my webview is loading the url http://google.com/ ,which is from (url) my main activity. In other words, I have a string like below in my main activity , I want to use it to load my web-view which is in the fragment , how can I do that?
Please help me to solve this problem
String url="http://google.com/";
Use this to send data to fragment from activity
Bundle bundle=new Bundle();
bundle.putString("url", "http://google.com/");
//set Fragmentclass Arguments
Fragmentclass fragobj=new Fragmentclass();
fragobj.setArguments(bundle);
And then recieve in fragment's onCreateView method
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
String strtext=getArguments().getString("url");
return inflater.inflate(R.layout.fragment, container, false);
}
You can do that by two ways.
1) By making the setter method for url.
public class WebViewFragment extends Fragment {
private String url;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup
container, #Nullable Bundle savedInstanceState) {
return rootView;
}
public void setUrl(String url){
this.url = url;
}
}
Call that methord before adding fragment:
WebViewFragment fragment = new WebViewFragment();
fragment.setUrl(url);
getSupportFragmentManager().beginTransaction()
.replace(R.id.container,fragment).commit();
2) You can use that bu intent bundle
Bundle bundle = new Bundle();
bundle.putString("url", "www.google.com");
Fragment fragment = new Fragment();
fragment.setArguments(bundle);
getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit();
Parse it in fragment:
public class WebViewFragment extends Fragment {
private String url;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup
container, #Nullable Bundle savedInstanceState) {
url = getArguments().getString("url");
return rootView;
}
}
try this:
Fragment homeFragment = new LotteryDetailFragment();
FragmentTransaction homeTransaction = getFragmentManager().beginTransaction();
String str = "you string";
Bundle bundle = new Bundle();
bundle.putString("param_str", str);
homeFragment.setArguments(bundle);
homeTransaction.addToBackStack("HomeFragment");
homeTransaction.replace(R.id.frame_container, homeFragment, "HomeFragment");
homeTransaction.commit();
in on onCreateView of destination fragment
String str=getArguments().getString("param_str");
Try this :
1 - From Activity :
Bundle bundle = new Bundle();
bundle.putString("url", "www.google.com");
Fragment fragment = new YourFragment();
fragment.setArguments(bundle);
getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit();
2 - In Fragment :
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View layoutView = inflater.inflate(R.layout.your_layout, container, false);
this.activity = getActivity();
String url = getArguments().getString("url");
return layoutView;
}
Try
Send data from Activity
Bundle data = new Bundle();
data.putString("url", "http://www.google.com");
MyFragment frg = new MyFragment();
frg.setArguments(data);
Receive data in Fragment
String url = getArguments().getString("url");
i must pass two parameters from fragment to another fragment. First parameter is type String and second parameter is type int. i want pass parameters with bundle but doesn't work.
FIRST FRAGMENT
Fragment fragment = new Fragment();
Bundle bundle = new Bundle();
bundle.putInt("totale", totalAmount);
fragment.setArguments(bundle);
SECOND FRAGMENT
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
TextView titolo2 = (TextView) getView().findViewById(R.id.quantità2);
Bundle bundle=this.getArguments();
int myInt = bundle.getInt("totale", 0);
titolo2.setText(myInt);
return inflater.inflate(R.layout.fragment_two, container, false);
}
Change Second Fragment like this:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_two, container, false);
TextView titolo2 = rootView.findViewById(R.id.quantità2);
Bundle bundle=this.getArguments();
int myInt = bundle.getInt("totale", 0);
titolo2.setText(myInt + "");
return rootView;
}
In first fragment write this:
TwoFragment fragment = new TwoFragment ();
Bundle bundle = new Bundle();
bundle.putInt("totale", totalAmount);
fragment.setArguments(bundle);
Second fragmnent:
Bundle bundle=getArguments();
int myInt = bundle.getInt("totale", 0);
titolo2.setText(myInt);
Create a public class with two static members like this :
public class SomeClass {
public static String stringValue="";
public static int integerValue=0;
}
Then from your first fragment just set values like this :
SomeClass.stringValue="yourValue";
SomeClass.integerValue=yourIntegerValue;
You can use these variable from your second fragment where you want :
int a =SomeClass.integerValue;
String str=SomeClass.stringValue;
If both fragments belong to the same activity, better to use this approach:
In activity you should save references to fragments, and all comunications between this fragments should be through activity, let's name it BaseActivity. For example add to activity method which will pass params to second fragment:
void updateSecondFragment(int param1, String param2){
mFragment2.updateTitle(param2);
}
In second fragment:
void updateTitle(String title){
mTextView.setText(title);
}
And in first fragment:
BaseActivity mActivity;
#Override
void onAttach(Activity activity) {
if (activity instanceOf BaseActivity){
mActivity = (BaseActivity) activity;
}
}
private void updateSecondFragment(){
if (mActivity != null){
mActivity.updateSecondFragment(int param1, String param2);
}
}
You should do the work of second fragment as:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_two, container, false);
}
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
TextView titolo2 = view.findViewById(R.id.quantità2);
Bundle bundle=getArguments();
int myInt = bundle.getInt("totale", 0);
titolo2.setText(String.valueOf(myInt));
}
I don't understand how to transfer data between two fragments. I've tried this:
public class Connection extends Fragment
{
SendMessage sender;
public interface SendMessage
{
public void send(String one, String two);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState)
{
//my data
}
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
send = (SendMessage) getActivity();
}
private class AlarmReceiver extends BroadcastReceiver
{
public void onReceive(final Context context, Intent intent)
{
if(message.equals("POS"))
{
sender.send(position,id);
}
}
}
in the first fragment; in the MainActivity:
public class MainActivity extends FragmentActivity implements Connection.SendMessage
{
protected void onCreate(Bundle savedInstanceState)
{
//my code
}
#Override
public void send(String one, String two)
{
Map map = new Map();
final Bundle bundle = new Bundle();
bundle.putString("Position",one);
bundle.putString("ID:",two);
map.setArguments(bundle);
}
}
and in the Map fragment(it need to receive this data):
public class Map extends Fragment
{
public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
Bundle bundle = new Bundle();
bundle.getArguments();
if (bundle != null)
{
String pos = bundle.getString("Position");
String id = bundle.getString("ID");
}
//then show this on googleMaps
}
}
but I don't understand why this code doesn't work..could you help me? thanks...
1) Please change your class name from Map.java to anything else. Because in java map is imported as java.util Package.
2)
Fragment map = new Fragment ();
final Bundle bundle = new Bundle();
bundle.putString("Position",one);
bundle.putString("ID:",two);
map.setArguments(bundle);
map.setArguments(arguments);
getSupportFragmentManager().beginTransaction()
.replace(R.id.item_detail_container, map).commit();
and in recieve
Bundle bundle = getArguments();
if (bundle != null)
{
String pos = bundle.getString("Position");
String id = bundle.getString("ID:"); (You miss : in ID)
}
Do This send fragment
String cid=id.getText().toString();
Fragment fr=new friendfragment();
FragmentManager fm=getFragmentManager();
android.app.FragmentTransaction ft=fm.beginTransaction();
Bundle args = new Bundle();
args.putString("CID", cid);
fr.setArguments(args);
ft.commit();
Received fragment
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
String strtext = getArguments().getString("CID");
return inflater.inflate(R.layout.fragment, container, false);
}
Well, firstly. Your receiving fragment is actually accessing an empty bundle. You are doing this:
Bundle bundle = new Bundle();
bundle.getArguments();
Instead of:
Bundle bundle = getArguments();
Secondly, a good way to communicate between two fragments is by using an interface. The interface communicates with the activity and the activity with the second fragment.
Here's google's tutorial:
http://developer.android.com/training/basics/fragments/communicating.html
Also, it doesn't seem like you are inflating any xml layout file for your Map Fragment or even adding it with FragmentTransaction after you have created it. Here is a short and sweet tutorial for that as well:
http://android-er.blogspot.com/2011/12/programmatically-add-fragment.html