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How to refresh the data after click the item on listview for fragment

I have two fragments both AFragment and BFragment. The AFragment has a ListView. The BFragment has a Texview and a Button. The Afragment will change the fragment and putString to BFragment when the user clicked the item on ListView. The BFragment got the data from Afragment and display the date to TextView. How can I do?
The sample is like that

You can use libs https://github.com/greenrobot/EventBus . very easy!!!
EventBus in 3 steps
Define events:
public static class MessageEvent { /* Additional fields if needed */ }
Prepare subscribers: Declare and annotate your subscribing method, optionally specify a thread mode:
#Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(MessageEvent event) {/* Do something */};
Register and unregister your subscriber. For example on Android, activities and fragments should usually register according to their life cycle:
#Override
public void onStart() {
super.onStart();
EventBus.getDefault().register(this);
}
#Override
public void onStop() {
super.onStop();
EventBus.getDefault().unregister(this);
}
Post events:
EventBus.getDefault().post(new MessageEvent());

You can use Interface and LocalBroadcastReceiver both for refreshing the Fragment.
Create one LocalBroadcastReceiver
LocalBroadcastManager.getInstance(context).registerReceiver(refreshFragment ,
new IntentFilter("refreshFragment"));
and its Method in BFragment
private BroadcastReceiver refreshFragment = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// Do The Changes You Want To Refresh BFragment
}
};
And Than Call This LocalBroadcastReceiver in OnClick Event of the Button in AFragment.
Intent intent =new Intent("refreshFragment");
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);

You can do this by below approach without using external libraries:
Assume you've a MainActivity which hosts the two fragments FragmetA (which has a ListView) and FragmentB (which has the TextView)
Here's the full scenario:
Create an interface # FragmentB which will be used by MainActivity to know when a list item is selected
MainActivity will register a listener to FragmentA by overriding onAttachFramemnt() and implementing this interface
When the user selects a list item from FragmentA; FragmentB will trigger the callback back to MainActivity
MainActivity will forward the trigger to a public method in FragmentB which is used to set the text of the TextView to the current item.
Here is the code:
1. Layout
1.1 activity_main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<fragment
android:id="#+id/fragment_b"
android:name="com.example.android.sendingdatafromfragmenta_to_fragmentb.FragmentB"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<fragment
android:id="#+id/fragment_a"
android:name="com.example.android.sendingdatafromfragmenta_to_fragmentb.FragmentA"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
1.2 fragment_a
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
1.3 fragment_b
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/tvSelectedItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="No Item selected" />
</LinearLayout>
2. Java
2.1 MainActivity
public class MainActivity extends AppCompatActivity implements FragmentA.OnListItemClickListener {
private static final String LOG_TAG = "LOG_TAG";
private FragmentB mFragmentB;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// inflating fragment B from xml
mFragmentB = (FragmentB) getSupportFragmentManager().findFragmentById(R.id.fragment_b);
}
#Override
public void onAttachFragment(Fragment fragment) {
Log.i(LOG_TAG, "onAttachFragment");
super.onAttachFragment(fragment);
if (fragment instanceof FragmentA) {
((FragmentA) fragment).setOnListItemClickListener(this);
}
}
#Override
public void onListItemClick(String selectedITem) {
mFragmentB.setSelectedITemText(selectedITem);
}
}
2.2 FragmentA
public class FragmentA extends Fragment {
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_a, container, false);
final String[] data = {"item 1", "item 2", "item 3", "item 4", "item 5"};
ListView listView = view.findViewById(R.id.listView);
ArrayAdapter adapter = new ArrayAdapter(requireContext(), android.R.layout.simple_list_item_1, data);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (mOnListItemClickListener != null) {
mOnListItemClickListener.onListItemClick(data[position]);
}
}
});
return view;
}
interface OnListItemClickListener {
void onListItemClick(String selectedITem);
}
OnListItemClickListener mOnListItemClickListener;
public void setOnListItemClickListener(OnListItemClickListener listener) {
mOnListItemClickListener = listener;
}
}
2.3 FragmentB
public class FragmentB extends Fragment {
View view;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_b, container, false);
return view;
}
public void setSelectedITemText(String text) {
TextView selectedItemTextView = view.findViewById(R.id.tvSelectedItem);
selectedItemTextView.setText(text);
}
}
Results

Add item to RecyclerView when a Button is clicked

I want to add items to RecyclerView when I click the "Add" button
This currently works but only once , meaning if I click the Add button the first time, the item is added and visible, but after that, nothing is added.
Here is my code for RecyclerView Adapter
public class Adapter extends RecyclerView.Adapter<Adapter.myViewHolder> {
List<Integer> listItem;
public Adapter(List<Integer> passedListItem){
this.listItem = passedListItem;
}
#Override
public myViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.recyclerview_layout, parent, false);
myViewHolder holder = new myViewHolder(itemView);
return holder;
}
#Override
public void onBindViewHolder(myViewHolder holder, int position) {
int itemNumber = position+1;
holder.itemTextView.setText("Item Number " + itemNumber + ": " + listItem.get(position));
}
#Override
public int getItemCount() {
return listItem.size();
}
public class myViewHolder extends RecyclerView.ViewHolder {
TextView itemTextView;
public myViewHolder(View view){
super(view);
itemTextView = view.findViewById(R.id.tv_itemTextView);
}
}
}
Here's my MainActivity
public class MainActivity extends AppCompatActivity {
List<Integer> itemList = new ArrayList<>();
EditText itemEditText;
RecyclerView recyclerView;
Adapter rvAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView)findViewById(R.id.rv_itemsRecyclerView);
itemEditText = (EditText)findViewById(R.id.et_editText);
//Setting the layout and Adapter for RecyclerView
recyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
rvAdapter = new Adapter(itemList);
recyclerView.setAdapter(rvAdapter);
}
//Click listener for "Add" Button
public void onAddButtonClicked(View view) {
try {
int IntegerFormat = Integer.valueOf(itemEditText.getText().toString());
itemList.add(IntegerFormat);
rvAdapter.notifyItemInserted(itemList.size() - 1);
itemEditText.setText("");
} catch(NumberFormatException e) {
Toast.makeText(getApplicationContext(), "The field is empty",
Toast.LENGTH_SHORT).show();
}
}
}
When i click the Add button, the first item is added and is visible, but when I click the Add button second time, nothing happens.
Solved
EDIT: Apparently, my Recycler view layout had its width and height set to match_parent instead of wrap_content, so the second item was getting added after clicking the button but it was added way way below. And I was stupid enough to not even try to scroll down. Everything was just working fine but I was ignorent.

I just checked your code and it is working fine. The mistake is in the recyclerview_layout.xml file which you havent posted. What you have is this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/tv_itemTextView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="TextView" />
</LinearLayout>
Please change this to:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/tv_itemTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TextView" />
</LinearLayout>
Your first list item is filling the entire recycler view because your linear layout has android:layout_height="match_parent" instead of android:layout_height="wrap_content" so the first item is hiding the other items but they are there in the adapter. You can confirm this by logging in logcat.

setOnItemClickListener not working

My Listview app gets its data and background color of itemview from custom adapter ListAdapter.class.i also need to set the currently selected list items value in a textview below listview,but the setOnItemClickListener in MAinActivity is not executing.pls help.
This is my list view app:
Layout image
MainActivity.java
public class MainActivity extends Activity {
private static ListAdapterclass adapter;
ListView lv;
TextView tv2;
private final String android_versions[]={
"Donut",
"Eclair",
"Froyo",
"Gingerbread",
"Honeycomb",
"Ice Cream Sandwich",
"Jelly Bean",
"KitKat",
"Lollipop",
"Marshmallow"
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initViews();
}
private void initViews() {
lv = (ListView) findViewById(R.id.listView1);
tv2 = (TextView) findViewById(R.id.selected);
adapter = new ListAdapterclass(getApplicationContext(), android_versions);
lv.setAdapter(adapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(getApplicationContext(), "hiiiiiiiii", Toast.LENGTH_SHORT).show();
System.out.println("********************** INSIDE ONITEMCLICKLISTNER IN MAIN ACTIVITY ******************");
String ver_name = (lv.getItemAtPosition(i)).toString();
tv2 = (TextView) findViewById(R.id.selected);
tv2.setText(ver_name);
}
});
}
}
ListAdapter.class
public class ListAdapterclass extends ArrayAdapter implements AdapterView.OnItemClickListener{
private String android_versionNames[];
Context mContext;
public int row_index=-1;
#Override
public void onItemClick(AdapterView<?> adapterView, View v, int i, long l) {
int position=(Integer)v.getTag();
String ver_name=getItem(position).toString();
}
private static class ViewHolder{
TextView tv;
LinearLayout LL;
TextView tv2;
}
public ListAdapterclass(Context context,String android_versionnames[]) {
super(context, R.layout.list_item,android_versionnames);
this.android_versionNames=android_versionnames;
this.mContext=context;
System.out.println(" ???????????????????????? Inside dataadapter,Android names : ?????????????????????????????\n ");
for(int i=0;i<android_versionnames.length;i++){
System.out.println("\n"+android_versionnames[i]);
}
}
private int lastPosition=-1;
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
String ver_name=getItem(position).toString();
final ViewHolder viewHolder;
final View result;
if(convertView==null){
viewHolder=new ViewHolder();
LayoutInflater inflater=LayoutInflater.from(getContext());
convertView=inflater.inflate(R.layout.list_item,parent,false);
viewHolder.tv=(TextView)convertView.findViewById(R.id.label);
viewHolder.LL=(LinearLayout) convertView.findViewById(R.id.linearLayout_1);
viewHolder.tv2=(TextView)convertView.findViewById(R.id.selected);
result=convertView;
convertView.setTag(viewHolder);
}else{
viewHolder=(ViewHolder) convertView.getTag();
result=convertView;
}
lastPosition=position;
viewHolder.tv.setText(ver_name);
viewHolder.LL.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
row_index=position;
notifyDataSetChanged();
}
});
if(row_index==position){
viewHolder.LL.setBackgroundColor(Color.parseColor("#409de1"));
viewHolder.tv.setTextColor(Color.parseColor("#ffffff"));
}
else
{
viewHolder.LL.setBackgroundColor(Color.parseColor("#ffffff"));
viewHolder.tv.setTextColor(Color.parseColor("#000000"));
}
return convertView;
}
}
ActivityMain.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.cybraum.test.listviewcolorchange.MainActivity"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:clickable="true"
android:layout_weight="1"
>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/listView1"
>
</ListView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight=".2"
android:id="#+id/linearLayout_2"
android:orientation="horizontal"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Selected : "
android:textStyle="bold"
android:layout_gravity="center"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:text="text"
android:id="#+id/selected"
android:layout_gravity="center"/>
</LinearLayout>
</LinearLayout>
listitem.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:id="#+id/linearLayout_1"
android:padding="10dp">
<TextView
android:id="#+id/label"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dip"
android:textSize="16dip"
android:textStyle="bold"
android:textColor="#000000"
android:gravity="center">
</TextView>
</LinearLayout>
what is the problem?

Remove viewHolder.LL.setOnClickListener listener from adapter and
In your adapter add a method to update row_index:
public void changeIndex(int rowIndex){
this.row_index = rowIndex;
notifyDataSetChanged();
}
Call this method from onItemClickListener event:
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
adapter.changeIndex(i);//This will give you the same result of viewHolder.LL.setOnClickListener as you are doing
//Do whatever you are doing previously
}
});

If you take click event from adapter then listview itemclick could not work if you need adapter click event and listview item click please refer the link,
How to make imageView clickable from OnItemClickListener?
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
long viewId = view.getId();
if (viewId == R.id.button1) {
Toast.makeText(this, "Button 1 clicked", Toast.LENGTH_SHORT).show();
} else if (viewId == R.id.button2) {
Toast.makeText(this, "Button 2 clicked", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "ListView clicked" + id, Toast.LENGTH_SHORT).show();
}
}
In adapter:
viewHolder.Btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
((ListView) parent).performItemClick(v, position, 0); // Let the event be handled in onItemClick()
}

Use:
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(getApplicationContext(), "hiiiiiiiii", Toast.LENGTH_SHORT).show();
System.out.println("********************** INSIDE ONITEMCLICKLISTNER IN MAIN ACTIVITY ******************");
String ver_name = (lv.getItemAtPosition(i)).toString();
tv2 = (TextView) findViewById(R.id.selected);
tv2.setText(ver_name);
}
});
And from adapter remove
implements AdapterView.OnItemClickListener

You need to remove your adaptor from the setOnClickListner()
Try to change Your method with
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Object o = prestListView.getItemAtPosition(position);
prestationEco str=(prestationEco)o;//As you are using Default String Adapter
Toast.makeText(getBaseContext(),str.getTitle(),Toast.LENGTH_SHORT).show();
}
});

change listview xml
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"></ListView>
remove AdapterView.OnItemClickListener from adapter class
public class ListAdapterclass extends ArrayAdapter {
}

change listview xml
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true">
</ListView>
remove AdapterView.OnItemClickListener from adapter class
public class ListAdapterclass extends ArrayAdapter {
}

How to make card style menu in android

I want to add card style in my app like this
i use in my app mysql database so i need to make like this cards and put my data from database in it now i use ListView with this code
public void listAllItme() {
ListAdapter lA = new listAdapter(listitems);
listView.setAdapter(lA);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent open = new Intent(R_arabic.this, rewaya_show.class);
open.putExtra("name", listitems.get(position).name);
open.putExtra("url", listitems.get(position).url);
open.putExtra("img", listitems.get(position).img);
open.putExtra("num", listitems.get(position).num);
startActivity(open);
}
}
});
}
class listAdapter extends BaseAdapter {
ArrayList<listitem_gib> lista = new ArrayList<listitem_gib>();
public listAdapter(ArrayList<listitem_gib> lista) {
this.lista = lista;
}
#Override
public int getCount() {
return lista.size();
}
#Override
public Object getItem(int position) {
return lista.get(position).name;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
LayoutInflater layoutInflater = getLayoutInflater();
View view = layoutInflater.inflate(R.layout.row_item_gib, null);
TextView name = (TextView) view.findViewById(R.id.textView_gib);
ImageView img = (ImageView) view.findViewById(R.id.imageView_gib);
TextView num = (TextView) view.findViewById(R.id.textView_gib2);
TextView size = (TextView) view.findViewById(R.id.textView_gib3);
name.setText(lista.get(position).name);
num.setText(lista.get(position).num);
size.setText(lista.get(position).size);
Picasso.with(R_arabic.this).load("http://grassyhat.com/android/image/" + lista.get(position).img).into(img);
return view;
}
}
first i want to know how i can make like this card style
second how i can use this code with card menu not listview
sorry im new in android and sorry for my bad english

What do you mean by card menu? because the example in the image is a recyclerview with a cardview item, you can achieve this by doing something like this
This will be your activity
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView)findViewById(R.id.recyclerView);
//Just your list of objects, in your case the list that comes from the db
List<Items> itemsList = new ArrayList<>();
CardAdapter adapter = new CardAdapter(this, itemsList);
//RecyclerView needs a layout manager in order to display data so here we create one
StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL);
//Here we set the layout manager and the adapter to the listview
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);
}
Inside the layout file you just have to place the recyclerview like this
<RelativeLayout
android:id="#+id/activity_main"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="jsondh.myapplication.MainActivity">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
Then your adapter will be something like this
public class CardAdapter extends RecyclerView.Adapter<CardAdapter.CardViewHolder> {
private List<Items> itemsList;
private Activity activity;
public CardAdapter(Activity activity, List<Items> items){
this.activity = activity;
this.itemsList = items;
}
#Override
public CardViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = activity.getLayoutInflater().inflate(R.layout.cardview_layout, parent, false);
return new CardViewHolder(itemView);
}
#Override
public void onBindViewHolder(CardViewHolder holder, int position) {
//Here you bind your views with the data from each object from the list
}
#Override
public int getItemCount() {
return itemsList.size();
}
public class CardViewHolder extends RecyclerView.ViewHolder {
public ImageView bookImage;
public TextView bookLabel01, bookLabel02;
public CardViewHolder(View itemView) {
super(itemView);
bookImage = (ImageView)itemView.findViewById(R.id.image);
bookLabel01 = (TextView)itemView.findViewById(R.id.label01);
bookLabel02 = (TextView)itemView.findViewById(R.id.label02);
}
}
And the last one will be the layout from each item on the list, like this
<RelativeLayout
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"
android:layout_margin="10dp">
<android.support.v7.widget.CardView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:cardElevation="15dp"
app:cardBackgroundColor="#3369Ed">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/image"
android:layout_width="150dp"
android:layout_height="130dp"/>
<TextView
android:id="#+id/label01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Label"
android:layout_gravity="right"
android:padding="5dp"
android:textColor="#ffffff"/>
<TextView
android:id="#+id/label02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="LongerLabel"
android:layout_gravity="right"
android:padding="5dp"
android:textColor="#ffffff"/>
</LinearLayout>
</android.support.v7.widget.CardView>
You also have to add this to your gradle file:
compile 'com.android.support:recyclerview-v7:25.0.0'
compile 'com.android.support:cardview-v7:25.0.0'
Hope it helps!

It's pretty simple. You will have to use a RecyclerView with GridLayoutManager and add a cardView to it.
Then, use an Adapter and ViewHolder to feed the data.
I suggest you to check this out:
https://developer.android.com/training/material/lists-cards.html

New to Android - Fragments

New to android programming. For the past 3 days I've been going through tutorials and feel like I get the major parts of it. Every time I try to run the following code, android causes it to force quit before even opening up. I've gotten other more simpler fragments to work with little effort, but this is confusing me. There is no error being printed at all, probably because it shuts down immediately. Any help would be much aprreciated.
EDIT: Using the debugger I was able to get an
"InflateException: Binary XML file #9: Error inflating class fragment.
It stops after the follwing code:
lv = (ListView) view.findViewById(R.id.lvMain);
Frag_MainList.java
public class Frag_MainList extends Fragment implements OnItemClickListener, OnItemLongClickListener{
ListView lv;
ImageView ivAddNote;
Communicator communicator;
Adapter_SQL database = new Adapter_SQL(getActivity());
ArrayList<Element> list;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.frag_mainlist, container, false);
lv = (ListView) view.findViewById(R.id.lvMain);
database.open();
list = database.getChildrenLess();
database.close();
Adapter_List adapter = new Adapter_List(getActivity(), list);
lv.setAdapter(adapter);
lv.setOnItemClickListener(this);
lv.setOnItemLongClickListener(this);
return view;
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
#Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int pos, long arg3) {
communicator.SendID(pos);
return true;
}
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int pos, long arg3) {
database.open();
database.switchComplete(list.get(pos).id);
database.close();
}
public void setCommunicator(Communicator communicator){
this.communicator = communicator;
}
public interface Communicator{
public void SendID(int index);
}
}
Activity_Main.java
public class Activity_Main extends Activity implements Frag_MainList.Communicator{
Frag_MainList frag1;
Frag_ListChildren frag_children;
FragmentManager manager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
manager = getFragmentManager();
frag1 = (Frag_MainList) manager.findFragmentById(R.id.fMainList);
frag1.setCommunicator(this);
}
#Override
public void SendID(int index) {
frag_children = (Frag_ListChildren) manager.findFragmentById(R.id.fListChildren);
if (frag_children != null && frag_children.isVisible()){
frag_children.displayChildren(index);
}else{
Intent intent = new Intent("com.likwid.wishlist.LISTCHILDREN");
intent.putExtra("id", index);
startActivity(intent);
}
}
}
frag_mainlist.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/lvMain"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00BBFF"
android:orientation="horizontal"
android:id="#+id/main_layout" >
<fragment
android:id="#+id/fMainList"
android:name="com.likwid.wishlist.Frag_MainList"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
</LinearLayout>

I figured it out. It seems the problem was with the database. getActivity in Frag_MainList would be called before the activity was actually created. Putting getActivity in the the "onActivityCreated" method allowed for getActivity to be properly called and seemed to take away all the problems it was causing. I think the reason it was showing a fragment error is because the fragment was faulty, making inflating in it impossible. Thanks everyone!