showing ClassCastException when i am loading Listview on Fragment

showing ClassCastException when i am loading Listview on Fragment - android

In my project I have inserted "Two" Fragments on my MainActivity:
And on "leftside" fragment I want to load Listview and "Rightside" fragment I want to load just one empty view.
For this, I have tried the code below, but I it's showing an exception:
ClassCaste Exception
What did I do wrong here?
activity_main.xml:
<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:padding="10dp">
<fragment
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
class="com.example.ram_ramadevi.fragmentexample4.MenuFragment"
android:id="#+id/fragment1"
/>
<fragment
android:layout_marginLeft="10dp"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
class="com.example.ram_ramadevi.fragmentexample4.RightSideFragment"
android:id="#+id/fragment2"/>
</LinearLayout>
MainActivity:
package com.example.ram_ramadevi.fragmentexample4;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
MenuList.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#+id/ListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"></ListView>
</LinearLayout>
MenuFragment:
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MenuFragment extends Activity {
ListView list;
ArrayAdapter<String> adaapter;
String[] android_Versions = {"1","2","3","4","5","6","7","8","9","10"
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.MenuList);
list = (ListView)findViewById(R.id.ListView);
adaapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,android_Versions);
list.setAdapter(adaapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener(){
#Override
public void onItemClick(AdapterView parent, View v, int position, long id) {
Toast.makeText(getBaseContext(), parent.getItemAtPosition(position) + "is selected", Toast.LENGTH_SHORT).show();
}
});
}
}
RightsideFragment.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00ffff"
>
</LinearLayout>
RightSideFragment:
import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class RightSideFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.RightsideFragment, container, false);
}
}

In menu fragment change Fragment instead of Activity
public class MenuFragment extends Fragment{
//your logic
}

Try below code:
activity_main.xml
<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:weightSum="2"
tools:context="com.example.newfragment.MainActivity" >
<fragment
android:id="#+id/fragment1"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
class="com.example.newfragment.MenuFragment" />
<fragment
android:id="#+id/fragment2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_marginLeft="10dp"
android:layout_weight="1"
class="com.example.newfragment.RightSideFragment" />
</LinearLayout>
MainActivity:-
package com.example.newfragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
menulist.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/ListView"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
MenuFragment:-
package com.example.newfragment;
import android.app.Fragment;</n>
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MenuFragment extends Fragment {
View view;
ListView list;
ArrayAdapter<String> adaapter;
String[] android_Versions = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" };
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.menulist, container, false);
list = (ListView) view.findViewById(R.id.ListView);
adaapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, android_Versions);
list.setAdapter(adaapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView parent, View v, int position, long id) {
Toast.makeText(getActivity(), parent.getItemAtPosition(position) + "is selected", Toast.LENGTH_SHORT)
.show();
}
});
return view;
}
}
rightsidefragment.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00ffff">
</LinearLayout>
RightSideFragment:-
package com.example.newfragment;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class RightSideFragment extends Fragment{
View rightView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// TODO Auto-generated method stub
rightView=inflater.inflate(R.layout.rightsidefragment, container, false);
return rightView;
}
}

Related

I am unable to access another class in my main activity in android

Problem: I want to implement RecyclerView in my main activity but when I want to set adapter for that, the compiler provides me red line error. I am unable to access another class in my main activity in android:
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
MainActivity.java
package com.example.mypc.recyclerview;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.*;
public class MainActivity extends AppCompatActivity {
RecyclerView rv;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rv=(RecyclerView)findViewById(R.id.recycler);
rv.setLayoutManager(new LinearLayoutManager(this));
String [] lang=
{"Hindi","English","Gujarati","Marathi","Punjabi","Tamil","Telgu"};
rv.setAdapter(new ***RecyclerAdapter***(lang)); //Here comes the
//error
}
}
layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:orientation="horizontal"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/img"
android:layout_width="82dp"
android:layout_height="match_parent"
android:src="#mipmap/ic_launcher"
tools:layout_editor_absoluteY="35dp" />
<TextView
android:id="#+id/tv"
android:layout_width="627dp"
android:layout_height="match_parent"
android:text="#string/app_name" />
</LinearLayout>
RecyclerAdapter.java
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.example.mypc.recyclerview.MainActivity;
import com.example.mypc.recyclerview.R;
import java.util.zip.Inflater;
public class RecyclerAdapter extends
RecyclerView.Adapter<RecyclerAdapter.MyClass>{
String[] arr;
public RecyclerAdapter(String []arr) {
this.arr=arr;
}
#NonNull
#Override
public MyClass onCreateViewHolder( ViewGroup viewGroup, int i) {
LayoutInflater inflater=LayoutInflater.from(viewGroup.getContext());
View view=inflater.inflate(R.layout.list,viewGroup,false);
return new MyClass(view);
}
#Override
public void onBindViewHolder(#NonNull MyClass viewHolder, int i) {
String title=arr[i];
viewHolder.tv.setText(title);
}
#Override
public int getItemCount() {
return arr.length;
}
public class MyClass extends RecyclerView.ViewHolder{
ImageView img;
TextView tv;
public MyClass(#NonNull View itemView) {
super(itemView);
img=(ImageView) itemView.findViewById(R.id.img);
tv=(TextView) itemView.findViewById(R.id.tv);
}
}
}

gridview material design in android studio

I have a problem
See the image
I want such a picture
My experience
custom layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/back"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
app:srcCompat="#drawable/car" />
</RelativeLayout>
activity main
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.user.wallpaper.MainActivity">
<GridView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/lv"
android:numColumns="2"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
</RelativeLayout>
list adapter
package com.example.user.wallpaper;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.support.annotation.LayoutRes;
import android.support.annotation.NonNull;
import android.support.v7.widget.CardView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.ArrayList;
public class list_adapter extends ArrayAdapter<String>{
Activity activity;
ArrayList<Integer> list_photo;
ArrayList<String> list_title;
public list_adapter(Activity activity, ArrayList<Integer> list_photo, ArrayList<String> list_title) {
super(activity, R.layout.custom,list_title);
this.activity=activity;
this.list_photo=list_photo;
this.list_title=list_title;
}
#NonNull
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater= activity.getLayoutInflater();
View v=inflater.inflate(R.layout.custom,parent,false);
ImageView iv=(ImageView) v.findViewById(R.id.imageView);
iv.setImageResource(list_photo.get(position));
return v;
}
}
main activity
package com.example.user.wallpaper;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.GridView;
import android.widget.ListView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
ArrayList<Integer> list_photo = new ArrayList<>();
ArrayList<String> list_title = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list_photo.add(R.drawable.car);
list_photo.add(R.drawable.mta);
list_photo.add(R.drawable.car);
list_title.add("#FF1E7DA9");
list_title.add("#FF1E7DA9");
list_title.add("#FF1E7DA9");
GridView lv = (GridView) findViewById(R.id.lv);
list_adapter ad = new list_adapter(MainActivity.this,list_photo,list_title);
lv.setAdapter(ad);
}
}
I hope dont ignored me please help me :(

Trouble setting a ListView / DialogFragment to full screen

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="15dp"
android:padding="10dp"
android:src="#drawable/arteta"/>
<TextView
android:id="#+id/nameTv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="27dp"
android:layout_marginTop="10dp"
android:layout_toRightOf="#id/imageView1"
android:text="name"/>
</RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:layout_width="150dp"
android:layout_height="100dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="15dp"
android:padding="10dp"
android:id="#+id/imageView1"
android:src="#drawable/arteta"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="27dp"
android:layout_marginTop="10dp"
android:layout_toRightOf="#+id/imageView1"
android:text="Name"
android:id="#+id/nameTv" />
</RelativeLayout>
RelativeLayout 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:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context=".MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show"
android:id="#+id/button1"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:onClick="setContentView" />
</RelativeLayout>
I have made a ListView with a DialogFragment and I am trying to display this in full screen.
However, when I run it on a device, there is always a border around the edges of the ListView, like a box within a box and cant seem to set it to fill the screen!
I have tried many routes to make this ListView cover the entire screen to no avail.
I would really like and appreciate some help with this.
Layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/listView1"
android:layout_alignParentTop="true"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
></ListView>
</RelativeLayout>
MainActivity
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.app.FragmentManager;
public class MainActivity extends FragmentActivity {
Button showBtn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final android.support.v4.app.FragmentManager fm = getSupportFragmentManager();
final PlayersFragment p = new PlayersFragment();
showBtn = (Button) findViewById(R.id.button1);
showBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
p.show(fm, "Players Fragment");
}
});
}
}
PlayersFragment
import android.app.DialogFragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;
public class PlayersFragment extends android.support.v4.app.DialogFragment {
ListView lv;
String[] players = {"micheal arteta", "deago costa", "andy reid", "scum degea", "scum rooney", "john terry"};
int[] images = {R.drawable.arteta, R.drawable.costa, R.drawable.reid, R.drawable.degea,
R.drawable.rooney, R.drawable.terry};
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.dialog, container, false);
//initialize listview
lv = (ListView) rootView.findViewById(R.id.listView1);
//set dialog title
getDialog().setTitle("Soccer SuperStars");
//create adapter obj and set list view to it
Adapter adapter = new Adapter(getActivity(), players);
lv.setAdapter(adapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> a, View v, int pos, long id) {
Toast.makeText(getActivity(), players[pos], Toast.LENGTH_SHORT).show();
}
});
return rootView;
}
}
Adapter
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class Adapter extends ArrayAdapter<String>{
Context c;
String[] players;
int[] images;
LayoutInflater inflater;
public Adapter(Context context, String[] players) {
super(context, R.layout.rowmodel,players);
this.c=context;
this.players = players;
this.images = images;
}
#Override
public View getView(int position,View convertView, ViewGroup parent){
if(convertView==null)
{
inflater= (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.rowmodel,null);
}
TextView nameTv = (TextView) convertView.findViewById(R.id.nameTv);
ImageView img = (ImageView) convertView.findViewById(R.id.imageView1);
nameTv.setText(players[position]);
img.setImageResource(images[position]);
return convertView;
}
}

I think that you should use a FrameLayout in your main_activity layout. Something like this:
<RelativeLayout
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=".MainActivity">
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show"
android:id="#+id/button1"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:onClick="setContentView" />
</FrameLayout>
</RelativeLayout>
Then, in your MainActivity, try this:
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends FragmentActivity {
Button showBtn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final android.support.v4.app.FragmentManager fm = getSupportFragmentManager();
final PlayersFragment p = new PlayersFragment();
showBtn = (Button) findViewById(R.id.button1);
showBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
final FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
showBtn.setVisibility(View.GONE);
transaction.replace(R.id.fragment_container, p);
transaction.addToBackStack(null);
transaction.commit();
}
});
}
#Override
public void onBackPressed() {
if (showBtn != null) {
showBtn.setVisibility(View.VISIBLE);
}
super.onBackPressed();
}
}
Your adapter:
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class Adapter extends ArrayAdapter<String>{
Context c;
String[] players;
int[] images;
LayoutInflater inflater;
public Adapter(Context context, String[] players, int[] images) {
super(context, R.layout.simplerow,players);
this.c=context;
this.players = players;
this.images = images;
}
#Override
public View getView(int position,View convertView, ViewGroup parent){
if(convertView==null)
{
inflater= (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.simplerow,null);
}
TextView nameTv = (TextView) convertView.findViewById(R.id.nameTv);
ImageView img = (ImageView) convertView.findViewById(R.id.imageView1);
nameTv.setText(players[position]);
img.setImageResource(images[position]);
return convertView;
}
}
Your dialog layout:
<?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:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Soccer SuperStars"
android:layout_gravity="center"/>
<View
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#android:color/black"/>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/listView1"
android:layout_alignParentTop="true"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
></ListView>
</LinearLayout>
And your PlayerFragment:
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;
public class PlayersFragment extends android.support.v4.app.DialogFragment {
ListView lv;
String[] players = {"micheal arteta", "deago costa", "andy reid", "scum degea", "scum rooney", "john terry"};
int[] images = {R.drawable.arteta, R.drawable.costa, R.drawable.reid, R.drawable.degea,
R.drawable.rooney, R.drawable.terry};
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.dialog, container, false);
//initialize listview
lv = (ListView) rootView.findViewById(R.id.listView1);
//create adapter obj and set list view to it
Adapter adapter = new Adapter(getActivity(), players, images);
lv.setAdapter(adapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> a, View v, int pos, long id) {
Toast.makeText(getActivity(), players[pos], Toast.LENGTH_SHORT).show();
}
});
return rootView;
}
}
I removed some come (paddings) from your main_activity layout and included some code show the "dialog" (that is now a fragment) full screen.

1) First method
public class PlayersFragment extends DialogFragment {
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(DialogFragment.STYLE_NO_TITLE, android.R.style.Theme_NoTitleBar_Fullscreen);
}
}
2) Second method
public class PlayersFragment extends DialogFragment {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(DialogFragment.STYLE_NO_TITLE, R.style.myCustomStyle);
}
}
in values add style
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="AppBaseTheme" parent="Theme.AppCompat.Light.NoActionBar">
</style>
<!-- Application theme. -->
<style name="AppTheme" parent="AppBaseTheme">
</style>
<style name="GalleryDialogStyle" parent="AppTheme">
<item name="android:windowActionBar">false</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowContentOverlay">#null</item>
</style>
</resources>

Fragment with ListView: NullPointerException on setAdapter

I have the Problem, that I get a NullPointExeption when I want to set a adapter on my ListView.
Before I had the Fragment extended with ListFragment and a simple Adapter, that works but the problem was, that I have 3 Fragments in this activity all with ListViews and I got display errors (shows the wrong list in a fragment). So I decided to set for every Fragment own ids on the Listview but now it doesnt work.
Error listview.setAdapter(adapter):
java.lang.NullPointerException at
de.resper.e2cast.MainFragmentLive.onCreateView(MainFragmentLive.java:46)
Fragment:
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
import de.resper.e2cast.classes.globalBox;
import de.resper.e2cast.helper.getXml;
import de.resper.e2cast.helper.parseXml;
public class MainFragmentLive extends android.support.v4.app.Fragment {
private List<String> bouquetListString;
private ArrayAdapter<String> adapter;
private globalBox activeBox;
private ListView listview;
#Override
public View onCreateView(LayoutInflater inflater,ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_main_live, container, false);
activeBox = ((globalBox) getActivity().getApplicationContext());
bouquetListString = new ArrayList<String>();
bouquetListString.add("loading...");
if(activeBox.isInit()){
if(activeBox.getBouquets().size() > 0 && activeBox.getBouquets().get(2).size() > 0){
bouquetListString = activeBox.getBouquets().get(2);
}else{
Log.d("Load Bouquet", "XML");
getBouquetBox();
}
}
listview = (ListView) getActivity().findViewById(R.id.listLive);
adapter = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1, bouquetListString);
listview.setAdapter(adapter);
ImageButton reloadBouquet = (ImageButton) view.findViewById(R.id.reloadBouquet);
reloadBouquet.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View arg0) {
getBouquetBox();
}
});
setHasOptionsMenu(true);
return view;
}
public void getBouquetBox(){
getXml.DownloadCompleteListener dcl = new getXml.DownloadCompleteListener() {
#Override
public void onDownloadComplete(String result) {
bouquetListString.clear();
String [] tags = {"e2servicereference", "e2servicename"};
List<List<String>> bouquetsList = parseXml.parseXmlByTag(result, tags);
activeBox.addBouquets(bouquetsList);
bouquetListString.addAll(activeBox.getBouquets().get(2));
adapter.notifyDataSetChanged();
}
};
Log.d("MyLogger", "XML Request GET BOUQUET");
getXml downloader = new getXml(dcl);
downloader.execute("http://" + activeBox.getIpPort() + "/web/getservices");
}
}
Fragment XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_margin="8dp">
<TextView
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="0.8"
android:text="#string/selectBouquet"
style="#style/header1"/>
<ImageButton
android:layout_width="0dip"
android:layout_height="wrap_content"
android:id="#+id/reloadBouquet"
android:src="#drawable/ic_action_refresh"
android:contentDescription="#string/search"
android:layout_weight=".20"
android:layout_gravity="bottom"/>
</LinearLayout>
<View
android:layout_width="fill_parent"
android:layout_height="1dp"
android:background="#android:color/darker_gray"/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/listLive" />
</LinearLayout>

Use view instead of getActivity() to initializing ListView because ListView is inside Fragment layout instead of Activity :
listview = (ListView) view.findViewById(R.id.listLive);

Refresh Fragment View inside itself

I have a big request for any of You. I would like to create a third Fragment in my simple application. Everything works fine, no error. I would like to make the last Fragment it is: "TestFragment" when I click that button inside that Fragment I'd like to refresh its View (on click button) and load another view inside this fragment (the same fragment). Please help me do this, show how to get it. I have read in Google but can not find the solution appropriate for this application.
Here is simple code:
MAIN ACTIVITY:
package com.example.viewpagerexample;
import com.example.viewpagerexample.R;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
public class MainActivity extends FragmentActivity {
private MyAdapter mAdapter;
private ViewPager mPager;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAdapter = new MyAdapter(getSupportFragmentManager());
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(mAdapter);
}
public static class MyAdapter extends FragmentPagerAdapter {
public MyAdapter(FragmentManager fm) {
super(fm);
}
#Override
public int getCount() {
return 2;
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new TestFragment();
// case 1:
// return new ImageFragment();
case 1:
return new TestFragment();
//
default:
return null;
}
}
}
}
TEST FRAGMENT:
package com.example.viewpagerexample;
import com.example.viewpagerexample.R;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class TestFragment extends Fragment {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.e("Test", "hello");
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.test, container, false);
// TextView textView = (TextView) view.findViewById(R.id.detailsText);
// textView.setText("Testing");
return view;
}
}
TEST LAYOUT:
<?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/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="QUIZ IMPORTANT TAKE A LOOK AT THIS!!!!!"
android:textSize="30dp" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
android:layout_marginLeft="30dp" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="asdjiasdjasoldjasjdasjdlasjdksahfkadshfalidshfladshfladsfhlasdfgjl;adkglkafdgnklfdsgjpfasmga.dsnvlkasdnvkldsnflkdasjflkasdnvlkadjvodsijfosdjv;lasdvlasdjvladosijao" />
DETAILS FRAGMENT:
package com.example.viewpagerexample;
import com.example.viewpagerexample.R;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class Details extends Fragment {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.e("Test", "hello");
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.details, container, false);
TextView textView = (TextView) view.findViewById(R.id.detailsText);
textView.setText("Testing");
return view;
}
}
ACTIVITY_MAIN LAYOUT:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
DETAILS LYOUT:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
How to do this refresh inside the same fragment?

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

showing ClassCastException when i am loading Listview on Fragment - android

In menu fragment change Fragment instead of Activity public class MenuFragment extends Fragment{ //your logic }

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Fragment with ListView: NullPointerException on setAdapter

Refresh Fragment View inside itself

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