Android gridview in a fragment showing nothing

Android gridview in a fragment showing nothing - android

I am creating a gridview with different images and texts from a class containing those images and texts in a fragment. The GridView is inside a TabHost. The TabHost is working fine. I can see other buttons in the same view. But nothing is inside the GridView. Here is the code:
public class MenuPage extends Fragment{
GridView CategoryGridview;
View MainMenuView, HomePageView, GalleryView;
#Override
public void onAttach(Activity activity) {
// TODO Auto-generated method stub
super.onAttach(activity);
}
#Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final Context context = getActivity();
this.MainMenuView = inflater.inflate(R.layout.mainmenupage, container, false);
this.GalleryView = inflater.inflate(R.layout.gallery, container, false);
this.CategoryGridview = (GridView)GalleryView.findViewById(R.id.gridViewGallery);
CategoryGridview.setAdapter(new GalleryAdapter(getActivity()));
:
:
:
return MainMenuView;
}
Adapter:
public class GalleryAdapter extends BaseAdapter{
ArrayList<Gallery> list;
Context context;
GalleryAdapter(Context context){
this.context = context;
list = new ArrayList<Gallery>();
int[] TempGalleryId = {R.drawable.a, R.drawable.b, R.drawable.c, R.drawable.d, R.drawable.e, R.drawable.f, R.drawable.g, R.drawable.h, R.drawable.i, R.drawable.j, R.drawable.k, R.drawable.l, R.drawable.m, R.drawable.n, R.drawable.o, R.drawable.p, R.drawable.q, R.drawable.r, R.drawable.s};
String[] TempGalleryName = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s"};
for (int i = 0; i < 19; i++){
Gallery TempGallery = new Gallery(TempGalleryId[i], TempGalleryName[i]);
list.add(TempGallery);
}
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return list.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View row = convertView;
ViewHolder holder = null;
if(row == null){
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.single_gallery, parent, false);
holder = new ViewHolder(row);
row.setTag(holder);
}
else{
holder = (ViewHolder) row.getTag();
}
Gallery temp = list.get(position);
holder.imageViewGallery.setImageResource(temp.GalleryId);
return row;
}
}
class ViewHolder{
ImageView imageViewGallery;
ViewHolder(View v)
{
imageViewGallery = (ImageView) v.findViewById(R.id.imageViewGallery);
}
}
class Gallery{
int GalleryId;
String GalleryName;
Gallery(int GalleryId, String GalleryName){
this.GalleryId = GalleryId;
this.GalleryName = GalleryName;
}
}
In mainmenupage.xml, one of the tab include gallery.xml file for animation with a gridview imageViewGallery and some buttons in it.
<LinearLayout
android:orientation="vertical"
android:id="#+id/tab2"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="#+id/DinnerList"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
<include
android:id="#+id/gallery"
layout="#layout/gallery" />
</LinearLayout>
SingleGallery.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageViewGallery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:src="#drawable/a" />
</RelativeLayout>
This is Gallery.xml
<RelativeLayout
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="#+id/btnBack"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="Back" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/button1"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_toRightOf="#+id/button1"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<GridView
android:id="#+id/gridViewGallery"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/btnBack"
android:numColumns="auto_fit"
android:horizontalSpacing="15dp"
android:verticalSpacing="15dp"
android:stretchMode="spacingWidthUniform">
</GridView>
</RelativeLayout>
I tried change
CategoryGridview.setAdapter(new GalleryAdapter(getActivity()));
to
CategoryGridview.setAdapter(new GalleryAdapter(context));
and
this.CategoryGridview = GridView)MainMenuView.findViewById(R.id.gridViewGallery);
to
this.CategoryGridview = (GridView)GalleryView.findViewById(R.id.gridViewGallery);
still doesn't work.
I also tried open a new project with extend Activity(){}. It work fine with
CategoryGridview.setAdapter(new GalleryAdapter(this));
So I guess the problem is somewhere else. Can anyone help?

Related

GridView onClickListener/onItemClickListener not working

I am trying to implement a Card view inside grid view. The grid view is showing perfectly; even when I touch on a grid view item it's showing nothing. But when I click on the text which is display below its work. I referred This but not working...
Thanks.
My code is as below,
// Contact_Backup.java
public class Contact_Backup extends AppCompatActivity {
#Bind(R.id.gridview)
GridView gridview;
String[] contact_screen_array;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contact_backup);
ButterKnife.bind(this);
contact_screen_array = getResources().getStringArray(R.array.TextScreen);
String[] contact_icon_array = getResources().getStringArray(R.array.IconScreen);
String concat = "\nContacts";
gridview.setAdapter(new Custom_Adapter(getApplicationContext(),contact_icon_array,contact_screen_array,concat));
}
}
//Custom_Adapter
public class Custom_Adapter extends BaseAdapter {
Context contaxt;
String[] Array_text;
String[] Array_icon;
String concat;
LayoutInflater inflater;
public Custom_Adapter(Context context,String[] Array_icon, String[] Array_text, String concat)
{
this.contaxt = context;
this.Array_text = Array_text;
this.Array_icon = Array_icon;
this.concat=concat;
inflater = (LayoutInflater)context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return Array_text.length;
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Bind(R.id.Screen_icon)
Button Screen_icon;
#Bind(R.id.Screen_text)
TextView Screen_text;
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View grid;
LayoutInflater inflater = (LayoutInflater) contaxt
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
grid = new View(contaxt);
grid = inflater.inflate(R.layout.new_app_card_layout, null);
ButterKnife.bind(this, grid);
Screen_text.setText(Array_text[position]+concat);
Screen_icon.setText(Array_icon[position]);
Typeface font = Typeface.createFromAsset(contaxt.getAssets(), "fonts/fontawesome-webfont.ttf" );
Screen_icon.setTypeface(font);
} else {
grid = (View) convertView;
}
grid.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("TAG::",""+position);
}
});
return grid;
}
}
// contact_backup.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/main_backgorund"
>
<RelativeLayout
android:background="#color/transparent"
android:padding="5.0dip"
android:id="#+id/top_bar_screen"
android:layout_weight="0.2"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:textColor="#color/newclr"
android:id="#+id/tvContacts"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/contacts"
android:shadowColor="#000000"
android:shadowDx="1.0"
android:shadowDy="1.0"
android:shadowRadius="2.0"
android:layout_centerVertical="true" />
<TextView
android:textColor="#color/newclr"
android:id="#+id/tvLastBackup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/last_backup"
android:shadowColor="#000000"
android:shadowDx="1.0"
android:shadowDy="1.0"
android:shadowRadius="2.0"
android:layout_alignParentRight="true"
android:layout_centerVertical="true" />
</RelativeLayout>
<View
android:layout_width="fill_parent"
android:layout_height="1dp"
android:id="#+id/v1"
android:layout_below="#+id/top_bar_screen"
android:background="#color/newclr"/>
<GridLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/swipe"
android:layout_below="#+id/v1"
android:paddingTop="20sp"
android:paddingLeft="10sp"
android:paddingRight="10sp"
android:layout_weight="0.6"
>
<GridView
android:id="#+id/gridview"
android:layout_width="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:layout_height="wrap_content" />
</GridLayout>
<!-- com.startapp.android.publish.banner.Banner
android:id="#+id/startAppBanner1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_weight="0.2"
android:layout_centerHorizontal="true" /-->
</RelativeLayout>
// new_app_card_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/fssr_card"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
card_view:cardBackgroundColor="#color/transparent"
>
<LinearLayout
android:gravity="center"
android:orientation="vertical"
android:id="#+id/Contacts_Button_Layout"
android:background="#drawable/linearlayout_normal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="-1.0dip"
android:layout_weight="1.0"
>
<Button
android:textSize="35.0sp"
android:textColor="#color/newclr"
android:layout_gravity="center"
android:id="#+id/Screen_icon"
android:background="#null"
android:padding="20sp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/fa_icon_contact"
android:drawablePadding="5.0dip"
android:textAllCaps="false" />
<TextView
android:textSize="15.0sp"
android:textColor="#color/white"
android:layout_gravity="center"
android:textAlignment="center"
android:id="#+id/Screen_text"
android:background="#color/newclr"
android:padding="5sp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/contactsbackup"
android:textAllCaps="false"/>
</LinearLayout>
</android.support.v7.widget.CardView>

use this method for clicking on a gridview item:
gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// your action when gridView item is clicked
}
});

Set the listener on the actual gridview object.
gridView.setOnItemClickListener(new OnItemClickListener()...);

Try this,
public class Contact_Backup extends AppCompatActivity {
#Bind(R.id.gridview)
GridView gridview;
String[] contact_screen_array;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contact_backup);
ButterKnife.bind(this);
contact_screen_array = getResources().getStringArray(R.array.TextScreen);
String[] contact_icon_array = getResources().getStringArray(R.array.IconScreen);
String concat = "\nContacts";
gridview.setAdapter(new Custom_Adapter(getApplicationContext(),contact_icon_array,contact_screen_array,concat));
gridview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
for(int i=0;i<contact_screen_array.length;i++) {
Log.d("TAG::", "Position"+contact_screen_array[i]);
}
}
});
}
}

Finally, I succeed. here is the code.
Just use Textview instead of Button in // new_app_card_layout.xml.
Just Update it,
<TextView
android:textSize="35.0sp"
android:textColor="#color/newclr"
android:layout_gravity="center"
android:id="#+id/Screen_icon"
android:background="#null"
android:padding="20sp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/fa_icon_contact"
android:drawablePadding="5.0dip"
android:textAllCaps="false"
android:textAlignment="center" />
Thank You so much, All of you for help... :)

Try this i have updated your custom Adapter class.please check again with this updated code.
public class Custom_Adapter extends BaseAdapter {
Context contaxt;
String[] Array_text;
String[] Array_icon;
String concat;
LayoutInflater inflater;
public Custom_Adapter(Context context,String[] Array_icon, String[] Array_text, String concat)
{
this.contaxt = context;
this.Array_text = Array_text;
this.Array_icon = Array_icon;
this.concat=concat;
inflater = (LayoutInflater)context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return Array_text.length;
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Bind(R.id.Screen_icon)
Button Screen_icon;
#Bind(R.id.Screen_text)
TextView Screen_text;
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View grid;
LayoutInflater inflater = (LayoutInflater) contaxt
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
grid = new View(contaxt);
grid = inflater.inflate(R.layout.new_app_card_layout, null);
ButterKnife.bind(this, grid);
Screen_text.setText(Array_text[position]+concat);
Screen_icon.setText(Array_icon[position]);
Typeface font = Typeface.createFromAsset(contaxt.getAssets(), "fonts/fontawesome-webfont.ttf" );
Screen_icon.setTypeface(font);
grid.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("TAG::",""+position);
}
});
} else {
grid = (View) convertView;
grid.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("TAG::",""+position);
}
});
}
return grid;
}
}
Hope this helps you out !

Issue in setting Images with dynamic columns in grid view

I want to set images in grid view with multiple columns. Images can be vary in columns.How can i achieve it. Thanks in advance
Images in GridView

create activity_main.xml
<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:orientation="vertical"
tools:context=".MainActivity" >
<GridView
android:id="#+id/gridView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/textView1"
android:numColumns="3" >
</GridView>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25dp"
android:textStyle="bold"
android:text=" Computer Languages..." />
</RelativeLayout>][1]][1]
Create MainActivity.
public class MainActivity extends Activity {
GridView gv;
Context context;
ArrayList prgmName;
public static String [] prgmNameList={"Let Us C","c++","JAVA","Jsp","Microsoft .Net","Android","PHP","Jquery","JavaScript"};
public static int [] prgmImages={R.drawable.images,R.drawable.images1,R.drawable.images2,R.drawable.images3,R.drawable.images4,R.drawable.images5,R.drawable.images6,R.drawable.images7,R.drawable.images8};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gv=(GridView) findViewById(R.id.gridView1);
gv.setAdapter(new CustomAdapter(this, prgmNameList,prgmImages));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Create a folder by name drawable in res directory. Insert the images into drawable folder by name as below.
public static int [] prgmImages={R.drawable.images,R.drawable.images1,R.drawable.images2,R.drawable.images3,R.drawable.images4,R.drawable.images5,R.drawable.images6,R.drawable.images7,R.drawable.images8};
Create the layout as programlist.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" >
<ImageView
android:id="#+id/imageView1"
android:layout_gravity="center"
android:layout_width="88dp"
android:layout_height="88dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView1"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="15dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:text="TextView" />
</LinearLayout>
Create Customclass ie CustomAdapter.
public class CustomAdapter extends BaseAdapter{
String [] result;
Context context;
int [] imageId;
private static LayoutInflater inflater=null;
public CustomAdapter(MainActivity mainActivity, String[] prgmNameList, int[] prgmImages) {
// TODO Auto-generated constructor stub
result=prgmNameList;
context=mainActivity;
imageId=prgmImages;
inflater = ( LayoutInflater )context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return result.length;
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public class Holder
{
TextView tv;
ImageView img;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Holder holder=new Holder();
View rowView;
rowView = inflater.inflate(R.layout.program_list, null);
holder.tv=(TextView) rowView.findViewById(R.id.textView1);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.tv.setText(result[position]);
holder.img.setImageResource(imageId[position]);
rowView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(context, "You Clicked "+result[position], Toast.LENGTH_LONG).show();
}
});
return rowView;
}
}
You will get the Output like..

Check all checkboxes in custom list view

I currently have ListFragment with a ArrayAdapter class
The codes are below.
1)I want to implement a checkbox from listview main xml to check all the checkboxes that are present in custom list row xml which is inflated using Array adapter.
2)how to refresh view in this code by clearing all checkboxes when a button is clicked.
listview_main.xml
<?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"
android:weightSum="10"
android:background="#fff2fff2" >
<ListView
android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="10"
android:choiceMode="multipleChoice" >
</ListView>
<TextView
android:id="#android:id/empty"
android:layout_width="wrap_content"
/>
<LinearLayout
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button
android:id="#+id/btnin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="In" />
<Button
android:id="#+id/btndelete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Delete" />
<CheckBox
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/checkAll"
android:checked="false" />
</LinearLayout>
</RelativeLayout>
custom_row.xml
<?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="wrap_content" >
<ImageView
android:id="#+id/icon"
android:layout_width="50dp"
android:layout_height="50dp" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_vertical"
android:orientation="horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:gravity="center_vertical"
android:orientation="vertical">
<TextView
android:id="#+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/paackage"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent">
<CheckBox
android:id="#+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="false"
android:focusableInTouchMode="false"
android:text="" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
Adapter class
public class FileAdapter extends ArrayAdapter<String>{
private List<String> filelist = null;
private Context context;
CheckBox checkAll;
public FileAdapter(Context _context, int _resource,List<String> _filelist) {
super(_context,_resource,_filelist);
this.context = _context;
this.filelist = _filelist;
this.itemChecked = new boolean[_filelist.size()];
}
private class ViewHolder {
TextView Name;
TextView pName;
CheckBox ck1;
ImageView iconview;
}
#Override
public int getCount() {
return ((null != filelist) ? filelist.size() : 0);
}
#Override
public String getItem(int position) {
return ((null != filelist) ? filelist.get(position) : null);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
View view = convertView;
if (null == view) {
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = layoutInflater.inflate(R.layout.custom_row, null);
holder = new ViewHolder();
holder.Name = (TextView) view.findViewById(R.id.name);
holder.pName = (TextView) view
.findViewById(R.id.paackage);
holder.ck1 = (CheckBox) view.findViewById(R.id.checkBox1);
holder.iconview = (ImageView) view.findViewById(R.id.app_icon);
view.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.appName.setText();
holder.packageName.setText();
holder.iconview.setImageDrawable();
holder.ck1.setChecked(false);
if (itemChecked[position])
holder.ck1.setChecked(true);
else
holder.ck1.setChecked(false);
holder.ck1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (holder.ck1.isChecked()) {
itemChecked[position] = true;
} else {
itemChecked[position] = false;
}
}
});
return view;
}
}
ListFragment class
public class FragmentA extends ListFragment implements View.OnClickListener {
public ArrayList<String> filelist;
Button in, delete;
ListView lv;
CheckBox cb;
private FileAdapter listadaptor = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
filelist = new ArrayList<String>();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View inflatedView = inflater.inflate(R.layout.fragment_app_restore, container, false);
in = (Button) inflatedView.findViewById(R.id.btnin);
delete= (Button) inflatedView.findViewById(R.id.btndelete);
lv = (ListView) inflatedView.findViewById(android.R.id.list);
empty = inflatedView.findViewById(android.R.id.empty);
//calling asynctask to load files here
delete.setOnClickListener(this);
in.setOnClickListener(this);
return inflatedView;
}
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
cb = (CheckBox) v.findViewById(R.id.checkBox1);//this is the checkbox in row only
cb.performClick();
if (cb.isChecked()) {
} else {
}
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btndelete:
break;
case R.id.btnin:
break;
}
}
private class LoadFiles extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) {
filelist = GetFiles(root_path);
if (filelist != null) {
listadaptor = new AppRestoreFileAdapter(getActivity(),
R.layout.custom_row, filelist);
} else {
// lv.setEmptyView(empty);
}
return null;
}
#Override
protected void onPostExecute(Void result) {
lv.setAdapter(listadaptor);
progress.dismiss();
super.onPostExecute(result);
}
}
}

How to change listview's button background color when button clicked in android

In my application, I keep yes and no button in listview as an item. setOnClickListener is defined in Adapter class. I have a problem with this. After I scroll the listview, I see the changed button in another row. How can I resolve my issue ?
public class QuizAdapter extends BaseAdapter {
private static final String FONTH_PATH_1 = "fonts/Brandon_reg.otf";
private static final String FONTH_PATH_2 = "fonts/Brandon_bld.otf";
private ArrayList<Question> questionList = new ArrayList<Question>();
private LayoutInflater inflater;
private Context context;
public QuizAdapter(Context context) {
super();
this.inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.context = context;
}
public void addListItem(final Question item) {
questionList.add(item);
notifyDataSetChanged();
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return questionList.size();
}
#Override
public Question getItem(int position) {
// TODO Auto-generated method stub
return questionList.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
Question currentQuestion = getItem(position);
Typeface font1 = Typeface.createFromAsset(context.getAssets(),
FONTH_PATH_1);
Typeface font2 = Typeface.createFromAsset(context.getAssets(),
FONTH_PATH_2);
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.quiz_list, null);
holder.questionCounterTextView = (TextView) convertView
.findViewById(R.id.questionCounterTextView);
holder.questionCounterTextView.setTypeface(font2);
holder.questionTextView = (TextView) convertView
.findViewById(R.id.questionTextView);
holder.questionTextView.setTypeface(font1);
holder.yesButton = (Button) convertView
.findViewById(R.id.yesButton);
holder.yesButton.setTypeface(font2);
holder.noButton = (Button) convertView.findViewById(R.id.noButton);
holder.noButton.setTypeface(font2);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.yesButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
holder.yesButton.setBackgroundColor(R.color.Gray);
}
});
holder.questionCounterTextView.setText(Integer.toString(position + 1));
holder.questionTextView.setText(currentQuestion.getQuestionMessage());
return convertView;
}
public static class ViewHolder {
public TextView questionCounterTextView, questionTextView;
public Button yesButton, noButton;
}
}
xml file
<?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:background="#color/White"
android:orientation="vertical"
tools:context="...." >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp" >
<ImageView
android:id="#+id/flagImageView"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_alignParentLeft="true"
android:src="#drawable/flag" />
<TextView
android:id="#+id/questionCounterTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/flagImageView"
android:layout_alignLeft="#+id/flagImageView"
android:layout_alignRight="#+id/flagImageView"
android:layout_alignTop="#+id/flagImageView"
android:layout_marginLeft="10dp"
android:text="1"
android:gravity="center|left"
android:textColor="#color/White"
android:textSize="#dimen/question_counter_text_size"/>
<TextView
android:id="#+id/questionTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_toRightOf="#+id/flagImageView"
android:text="#string/loremIpsum2"
android:textColor="#color/Blue"
android:textSize="#dimen/text_size" />
</RelativeLayout>
<LinearLayout
android:id="#+id/quizLinearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="30dp"
android:orientation="horizontal"
android:weightSum="640" >
<Space
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="30" />
<Button
android:id="#+id/yesButton"
style="#style/button_type"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="275"
android:background="#color/QuizGreen"
android:text="#string/yes"
android:textColor="#color/White"
android:textSize="#dimen/question_button_text_size" />
<Space
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="30" />
<Button
android:id="#+id/noButton"
style="#style/button_type"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="275"
android:background="#color/QuizOrange"
android:text="#string/no"
android:textColor="#color/White"
android:textSize="#dimen/question_button_text_size" />
<Space
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="30" />
</LinearLayout>
</LinearLayout>

I solved my problem with defining a new String in Question class which is kept user answer. Controlling yes or no than change the background.
holder.yesButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (currentQuestion.getUserAnswer() == null) {
questionList.get(position).setUserAnswer("TRUE");
notifyDataSetChanged();
} else if (currentQuestion.getUserAnswer().equals("FALSE")) {
questionList.get(position).setUserAnswer("TRUE");
notifyDataSetChanged();
}
}
});
holder.noButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (currentQuestion.getUserAnswer() == null) {
questionList.get(position).setUserAnswer("FALSE");
notifyDataSetChanged();
} else if (currentQuestion.getUserAnswer().equals("TRUE")) {
questionList.get(position).setUserAnswer("FALSE");
notifyDataSetChanged();
}
}
});
if (currentQuestion.getUserAnswer() == null) {
holder.yesButton.setBackgroundColor(context.getResources()
.getColor(R.color.QuizGreen));
holder.noButton.setBackgroundColor(context.getResources().getColor(
R.color.QuizOrange));
} else if (currentQuestion.getUserAnswer().equals("TRUE")) {
holder.yesButton.setBackgroundColor(context.getResources()
.getColor(R.color.NewsFeedDividerGray));
holder.noButton.setBackgroundColor(context.getResources().getColor(
R.color.QuizOrange));
} else {
holder.yesButton.setBackgroundColor(context.getResources()
.getColor(R.color.QuizGreen));
holder.noButton.setBackgroundColor(context.getResources().getColor(
R.color.NewsFeedDividerGray));
}

Have you tried not using the holder, and doing something like this?
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
RelativeLayout rl = (RelativeLayout)v.getParent();
Button bttn = (Button)rl.findViewById(R.id.yesButton);
bttn.setBackgroundColor(R.color.Gray);
}

GridView doesn't display content in android

i am trying to display image using GridView. This is the first time i using GridView, so i using the example from here and implement it to mine (i have tried the example that contained there, and it's works).
But, i have checked it many time, there's no error comes from LogCat, no Force Closed, the image didn't show. i have no idea where's the wrong part.
Here's my code:
choosepic.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#drawable/bg_inner">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/book_inner"
android:layout_marginTop="50dp"
/>
<ImageButton
android:id="#+id/homeBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/home_btn"
android:background="#null"
/>
<ImageView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="#drawable/bg_arrow_btn"
android:layout_alignParentRight="true"
/>
<ImageButton
android:id="#+id/nextBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/right_arrow"
android:background="#null"
android:layout_alignParentRight="true"
android:layout_marginTop="5dp"
android:layout_marginRight="7dp"
android:layout_marginLeft="7dp"
/>
<ImageButton
android:id="#+id/prevBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/left_arrow"
android:background="#null"
android:layout_toLeftOf="#+id/nextBtn"
android:layout_marginTop="5dp"
/>
<GridView
android:id="#+id/gridView1"
android:numColumns="3"
android:gravity="center"
android:columnWidth="30dp"
android:stretchMode="columnWidth"
android:layout_width="300dp"
android:layout_height="200dp"
android:layout_marginLeft="60dp"
android:layout_marginTop="70dp"
>
</GridView>
</RelativeLayout>
animalbutton.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/grid_item_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true">
</ImageView>
<TextView
android:text="TextView"
android:layout_height="wrap_content"
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_centerHorizontal="true"
android:textSize="18sp"
android:visibility="gone">
</TextView>
ImageAdapter.java
public class ImageAdapter extends BaseAdapter{
private Activity activity;
private ArrayList<String> listNm;
private ArrayList<Integer> listAnim;
public ImageAdapter(Activity activity,ArrayList<String> listName, ArrayList<Integer> listImage) {
super();
this.listNm = listName;
this.listAnim = listImage;
this.activity = activity;
}
public static class ViewHolder
{
public ImageView imgViewAnim;
public TextView txtViewAnim;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder view;
LayoutInflater inflator = activity.getLayoutInflater();
if(convertView==null)
{
view = new ViewHolder();
convertView = inflator.inflate(R.layout.animalbutton, null);
view.txtViewAnim = (TextView) convertView.findViewById(R.id.textView1);
view.imgViewAnim = (ImageView) convertView.findViewById(R.id.grid_item_image);
convertView.setTag(view);
}
else
{
view = (ViewHolder) convertView.getTag();
}
view.txtViewAnim.setText(listNm.get(position));
view.imgViewAnim.setImageResource(listAnim.get(position));
return convertView;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 0;
}
#Override
public String getItem(int position) {
// TODO Auto-generated method stub
return listNm.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
}
choosepic.java
public class choosepic extends Activity {
/** Called when the activity is first created. */
ImageAdapter mAdapter;
GridView gridView;
static final String[] animal = new String[] {
"cat", "cow","croc", "duck", "elephant", "giraffe", "lion", "moose", "mouse"};
private ArrayList<String> listNm;
private ArrayList<Integer> listAnim;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.choosepic);
gridView = (GridView) findViewById(R.id.gridView1);
prepare_list1();
mAdapter = new ImageAdapter(this,listNm, listAnim);
gridView.setAdapter(mAdapter);
gridView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View v, int position, long id) {
Toast.makeText(getApplicationContext(), mAdapter.getItem(position), Toast.LENGTH_SHORT).show();
}
});
}
public void prepare_list1(){
listNm = new ArrayList<String>();
listAnim = new ArrayList<Integer>();
for (int i = 0; i < animal.length; i++) {
listNm.add(animal[i]);
listAnim.add(getResources().getIdentifier("anim_"+animal[i], "drawable", getPackageName()));
}
}
}
i need some help. i appreciate any help. thank you in advance!

i think the problem is in your getCount() that returns 0 elements
instead of that make it like this
#Override
public int getCount() {
// TODO Auto-generated method stub
return listNm.size();
}

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.

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