Develop Reference

Not being able to place an onClickListener on the Grid Items provided by a custom BaseAdapter

I currently have a grid view using a base adapter inside a fragment and I am trying to transfer to a different fragment when one of the items is clicked but none of the solutions I found on stack overflow has worked. I might miss something.
Adapter
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.licenta.joberfrontend.R;
import com.licenta.joberfrontend.rest.backend_entieties.Category;
import java.util.ArrayList;
import java.util.List;
public class CategoriesAdapter extends BaseAdapter {
public class ViewHolder {
TextView textName;
ImageView imageView;
}
private ArrayList<Category> categoryList;
public Context context;
public CategoriesAdapter(List<Category> apps, Context context) {
this.context = context;
this.categoryList = (ArrayList<Category>) apps;
}
#Override
public int getCount() {
return categoryList.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View view, ViewGroup parent) // inflating the layout and initializing widgets
{
ViewHolder viewHolder;
if (view == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.category_list_content, parent, false);
viewHolder = new ViewHolder();
viewHolder.textName = view.findViewById(R.id.textName);
viewHolder.imageView = view.findViewById(R.id.iconView);
view.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) view.getTag();
}
// here we are setting up the names and images
viewHolder.textName.setText(categoryList.get(position).getName());
viewHolder.imageView.setImageResource(this.context.getResources().getIdentifier(categoryList.get(position).getCategoryIconId(), "mipmap", this.context.getPackageName()));
return view;
}
}
Fragment's OnCreate
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final LocalStorageSaver localStorageSaver = new LocalStorageSaver(Objects.requireNonNull(getContext()));
final ToastShower toastShower = new ToastShower();
//REST services creation
final RetrofitCreator retrofitCreator = new RetrofitCreator();
final Retrofit retrofit = retrofitCreator.getRetrofit();
final CategoryService categoryService = retrofit.create(CategoryService.class);
final Call<List<Category>> getCategoriesRequest = categoryService.getAllCategoriesAndTheirJobs(localStorageSaver.getValueFromStorage(Constants.TOKEN));
getCategoriesRequest.enqueue(
new Callback<List<Category>>() {
#Override
public void onResponse(Call<List<Category>> call, Response<List<Category>> response) {
toastShower.showToast("Categories succesfully retrieved from backend.", getContext());
final GridView gridView = Objects.requireNonNull(getView()).findViewById(R.id.gridViewNewContract);
gridView.setAdapter(new CategoriesAdapter(response.body(), getActivity()));
}
#Override
public void onFailure(Call<List<Category>> call, Throwable t) {
toastShower.showToast("There has been a problem with retrieving the categories data!", getContext());
}
}
);
}
Items inside the grid view
<?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:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.cardview.widget.CardView
android:layout_width="100dp"
android:layout_height="100dp"
app:cardCornerRadius="15dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_marginLeft="10dp"
android:layout_marginTop="15dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="15dp"
android:orientation="vertical">
<ImageView
android:id="#+id/iconView"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_gravity="center_horizontal"
android:src="#mipmap/ic_list"
android:tint="#color/colorAccent" />
<TextView
android:id="#+id/textName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:fontFamily="sans-serif"
android:maxLength="12"
android:text="#string/appName"
android:textColor="#color/colorAccent"
android:textSize="13sp" />
</LinearLayout>
</androidx.cardview.widget.CardView>
</RelativeLayout>
If you need any more information I will gladly provided.
I can mention that I've tried placing listeners both in the adapter and in the fragment directly on the grid.

please try this
viewHolder.imageView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
//do stuff
}
});

GridView item looks not as expected - Android

I try to use a GridView object in a specific fragment in my app.
I created a layout file for the grid item and in the layout editor, the preview image looks good, as expected.
The problem arises when I run the app in my emulator. The whole item layout gets shrinked and the image I put in the middle suddenly jumps to the top of the layout.
Screenshot of the layout editor:
https://i.gyazo.com/8ed96ed19719a578388cc48aba6829f8.png
Screenshot of the emulator:
https://i.gyazo.com/cca0a32b3d102025df5d5369dc7c0efc.png
Here is the xml code for the fragment:
<?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">
<GridView
android:id="#+id/documents_grid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="10dp"
android:columnWidth="#dimen/document_grid_item_width"
android:gravity="center"
android:horizontalSpacing="0dp"
android:verticalSpacing="0dp"
android:numColumns="auto_fit"
android:stretchMode="spacingWidthUniform" />
<RelativeLayout
android:id="#+id/empty_view_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/empty_view_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="50dp"
android:src="#drawable/recent_empty_view" />
<ImageView
android:id="#+id/empty_view_arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="#+id/empty_view_image"
android:layout_below="#+id/empty_view_image"
android:layout_marginEnd="7dp"
android:scaleX="0.75"
android:scaleY="0.75"
android:src="#drawable/empty_view_arrow" />
</RelativeLayout>
</RelativeLayout>
Here is the item layout xml code:
<?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"
android:layout_width="#dimen/document_grid_item_width"
android:layout_height="#dimen/document_grid_item_height"
android:gravity="center"
android:orientation="vertical"
android:weightSum="1">
<FrameLayout
android:id="#+id/draft_frame"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.9"
android:background="#drawable/document_grid_item_bg"
android:focusable="true"
android:foreground="?android:selectableItemBackground">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/draft_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="#drawable/draft_icon" />
<ImageView
android:id="#+id/draft_more_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentTop="true"
android:layout_marginTop="5dp"
app:srcCompat="#drawable/ic_more" />
</RelativeLayout>
</FrameLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_margin="5dp"
android:layout_weight="0.1">
<TextView
android:id="#+id/draft_date_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="20 May 17"
android:textSize="11sp" />
</RelativeLayout>
</LinearLayout>
Here is the adapter code:
package com.silverfix.dgdeditor.adapters;
import android.app.Activity;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.silverfix.dgdeditor.R;
import com.silverfix.dgdeditor.utils.DocumentPack;
import com.silverfix.dgdeditor.utils.views.ViewClickListener;
import com.silverfix.dgdeditor.utils.views.ViewLongClickListener;
import java.util.List;
/**
* Created by David on 14/05/2017.
*/
public class DraftsGridAdapter extends BaseAdapter {
// Listeners
private ViewClickListener clickListener;
private ViewLongClickListener longClickListener;
private Activity context;
private List<DocumentPack> dataSet;
private int clickedItemPos = -1;
public DraftsGridAdapter(Activity context, List<DocumentPack> dataSet) {
this.context = context;
this.dataSet = dataSet;
}
public void setClickedItemPosition(int clickedItemPos) {
this.clickedItemPos = clickedItemPos;
}
public int getClickedItemPosition() {
return clickedItemPos;
}
public void setClickListener(ViewClickListener clickListener) {
this.clickListener = clickListener;
}
public void setLongClickListener(ViewLongClickListener longClickListener) {
this.longClickListener = longClickListener;
}
#Override
public int getCount() {
return dataSet.size();
}
#Override
public Object getItem(int position) {
return dataSet.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
final DocumentPack pack = dataSet.get(position);
if (convertView == null) {
final LayoutInflater inflater = LayoutInflater.from(context);
convertView = inflater.inflate(R.layout.draft_grid_item, null);
DraftViewHolder viewHolder = new DraftViewHolder(context, convertView);
convertView.setTag(viewHolder);
}
// Instance of a view holder from the tag of the convertView
DraftViewHolder viewHolder = (DraftViewHolder) convertView.getTag();
// Set the adapter position to the current view holder
viewHolder.setAdapterPosition(position);
// Bind the click listeners to the root view of the view holder
// viewHolder.bindClick(clickListener);
// viewHolder.bindLongClick(longClickListener);
// Bind the data to the view holder
viewHolder.bindData(pack);
return convertView;
}
private class DraftViewHolder implements View.OnCreateContextMenuListener {
private View.OnClickListener clickListener;
private View.OnLongClickListener onLongClickListener;
private View rootView;
private ImageView moreButton;
private TextView date;
private int position;
public DraftViewHolder(final Activity context, final View rootView) {
this.rootView = rootView;
date = (TextView) rootView.findViewById(R.id.draft_date_tv);
moreButton = (ImageView) rootView.findViewById(R.id.draft_more_button);
context.registerForContextMenu(rootView);
rootView.setOnCreateContextMenuListener(this);
moreButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
context.openContextMenu(rootView);
setClickedItemPosition(position);
}
});
}
void setAdapterPosition(int position) {
this.position = position;
}
void bindClick(final ViewClickListener clickListener) {
this.clickListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
clickListener.onClick(position);
}
};
rootView.setOnClickListener(this.clickListener);
}
void bindLongClick(final ViewLongClickListener longClickListener) {
this.onLongClickListener = new View.OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
longClickListener.onLongClick(position);
return false;
}
};
rootView.setOnLongClickListener(this.onLongClickListener);
}
void bindData(DocumentPack draft) {
String formatDate = draft.getFormattedDate();
date.setText(formatDate);
}
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
}
}
}

This worked for me, You can try...
`<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:padding="5dp" >
<GridView
android:id="#+id/gridview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:columnWidth="100dp"
android:gravity="center"
android:horizontalSpacing="10dp"
android:numColumns="3"
android:stretchMode="spacingWidthUniform"
android:verticalSpacing="10dp" />
`
If this don't work you can also try to use android:stretchMode="columnWidth"

layout with listview and text below

I have a text below a listview and I need that if listview contains more items, to push the text down more. Because many items in my listview, causes the view to look bad. Look at the example to understand
Picture
My code is
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Mañana"
android:id="#+id/manianaTitle" />
<ListView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/listaManiana"
android:layout_gravity="center_horizontal" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Tarde"
android:id="#+id/tardeTitle" />
<ListView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/listaTarde"
android:layout_gravity="center_horizontal" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Noche"
android:id="#+id/nocheTitle" />
<ListView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/listaNoche"
android:layout_gravity="center_horizontal" />
</LinearLayout>
`

It is better to use a ListView with section. In that case you can categorize each section in your ListView instead of using many ListViews and TextViews.
I found this example from this website and I did some modification in the code
Create your List Item View
<?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">
<ImageView
android:id="#+id/photo"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="32dp"
android:src="#drawable/female"
android:contentDescription="#string/app_name"/>
<TextView
android:id="#+id/photo_details"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/app_name"
android:layout_marginLeft="16dp"
android:layout_toRightOf="#+id/photo"
android:layout_alignTop="#+id/photo"/>
</RelativeLayout>
Create a layout for the header section
<?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"
android:gravity="center_vertical" >
<TextView
android:id="#+id/text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#FFF"
android:gravity="center_vertical"
android:padding="5dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#FF000000" />
</LinearLayout>
Create an adapter for your List View
import java.util.ArrayList;
import java.util.TreeSet;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
class CustomAdapter extends BaseAdapter {
private static final int TYPE_ITEM = 0;
private static final int TYPE_SEPARATOR = 1;
private ArrayList<EntityObject> mData = new ArrayList<String>();
private TreeSet<Integer> sectionHeader = new TreeSet<Integer>();
private LayoutInflater mInflater;
public CustomAdapter(Context context) {
mInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public void addItem(final EntityObject item) {
mData.add(item);
notifyDataSetChanged();
}
public void addSectionHeaderItem(final String item) {
mData.add(item);
sectionHeader.add(mData.size() - 1);
notifyDataSetChanged();
}
#Override
public int getItemViewType(int position) {
return sectionHeader.contains(position) ? TYPE_SEPARATOR : TYPE_ITEM;
}
#Override
public int getViewTypeCount() {
return 2;
}
#Override
public int getCount() {
return mData.size();
}
#Override
public String getItem(int position) {
return mData.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
int rowType = getItemViewType(position);
if (convertView == null) {
holder = new ViewHolder();
switch (rowType) {
case TYPE_ITEM:
convertView = mInflater.inflate(R.layout.snippet_item1, null);
holder.textView = (TextView) convertView.findViewById(R.id.photo_details);
holder.photo = (ImageView)convertView.findViewById(R.id.photo)
break;
case TYPE_SEPARATOR:
convertView = mInflater.inflate(R.layout.snippet_item2, null);
holder.textView = (TextView) convertView.findViewById(R.id.textSeparator);
break;
}
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.textView.setText(mData.get(position).getText());
holder.setImageResource(mData.get(position).getImage());
return convertView;
}
public static class ViewHolder {
public TextView textView;
public ImageView photo;
}
}

Issue in setting Textview's text in Custom Adapter for Android

I am not able to set textview's setText property inside getView() method of Custom Adapter.
I already tried below solutions but it does not work for me :
Solution One
Solution Two
Solution Three
Listview.xml file :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/imgLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:divider="#null"
android:dividerHeight="5dp"
android:scrollbars="none" />
</RelativeLayout>
Below is my keep_resing xml file :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/customRowLayout"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_marginTop="20dp"
android:orientation="horizontal" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:orientation="vertical" >
<ImageButton
android:id="#+id/Btn"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginLeft="10dp"
android:background="#drawable/thumb_down_disabled" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="#string/resing"
android:textColor="#357EC7"
android:textSize="10sp" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:orientation="vertical" >
<TextView
android:id="#+id/lyricsTxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" />
<RelativeLayout
android:id="#+id/parentLayout"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="5dp"
android:background="#drawable/playing_view"
android:orientation="horizontal" >
<TextView
android:id="#+id/helloTxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_marginLeft="5dp"
android:singleLine="true"
android:text="Hello"
android:textColor="#357EC7"
android:textSize="14sp" />
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="5dp"
android:background="#drawable/volume" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:orientation="vertical" >
<ImageButton
android:id="#+id/keepBtn"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginRight="10dp"
android:background="#drawable/thumb_up_disabled" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="#string/keep"
android:textColor="#357EC7"
android:textSize="10sp" />
</LinearLayout>
</RelativeLayout>
Below is my adapter code :
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.simpleframework.xml.stream.Position;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.AssetFileDescriptor;
import android.content.res.Resources;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Handler;
import android.os.PowerManager;
import android.sax.StartElementListener;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
public class KeepReSingAdapter extends BaseAdapter implements OnClickListener {
/*********** Declare Used Variables *********/
private Activity activity;
private ArrayList data;
private static LayoutInflater inflater = null;
public Resources res;
SongCue tempValues = null;
int i = 0;
private ArrayList<SongCue> songCue;
private int cueIndex = 0;
private String selectedSongId;
private MediaPlayer mMediaPlayer;
ViewHolder holder;
View vi;
boolean right_button_flag, left_button_flag;
SessionManager session;
// int left_button_flag;
/************* CustomAdapter Constructor *****************/
public KeepReSingAdapter(Activity a, ArrayList d, Resources resLocal) {
/********** Take passed values **********/
activity = a;
data = d;
res = resLocal;
/*********** Layout inflator to call external xml layout () ***********/
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
selectedSongId = SessionManager.getInstance(
activity.getApplicationContext()).getString(
AppConstants.SONG_ID);
right_button_flag = false;
left_button_flag = false;
// Session class instance
session = new SessionManager(activity.getApplicationContext());
}
/******** What is the size of Passed Arraylist Size ************/
public int getCount() {
if (data.size() <= 0)
return 1;
return data.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
/********* Create a holder Class to contain inflated xml file elements *********/
public static class ViewHolder {
public TextView lyricsTxt, helloTxt;
// public TextView text1;
public ImageButton leftBtn, rightBtn;
public RelativeLayout parentLayout;
public LinearLayout rowLayout;
// public TextView textWide;
// ImageView image;
}
/****** Depends upon data size called for each row , Create each ListView row *****/
public View getView(final int position, View convertView, ViewGroup parent) {
vi = convertView;
if (convertView == null) {
vi = inflater.inflate(R.layout.keep_resing, null);
holder = new ViewHolder();
holder.lyricsTxt = (TextView) vi.findViewById(R.id.lyricsTxt);
holder.helloTxt = (TextView) vi.findViewById(R.id.helloTxt);
holder.leftBtn = (ImageButton) vi.findViewById(R.id.reSingBtn);
holder.rightBtn = (ImageButton) vi.findViewById(R.id.keepBtn);
holder.parentLayout = (RelativeLayout) vi
.findViewById(R.id.parentLayout);
holder.rowLayout = (LinearLayout) vi
.findViewById(R.id.customRowLayout);
vi.setTag(holder);
} else {
holder = (ViewHolder) vi.getTag();
}
if (data.size() <= 0) {
} else {
/***** Get each Model object from Arraylist ********/
tempValues = null;
tempValues = (SongCue) data.get(position);
holder.lyricsTxt.setText(tempValues.getLyric());
List<Song> AllSong = SplashScreen_Activity.songs;
if (selectedSongId != null) {
for (Song tempsong : AllSong) {
if (tempsong.songId.equals(selectedSongId)) {
songCue = (ArrayList<SongCue>) tempsong.songCues.songCue;
}
}
} else {
}
holder.parentLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(activity.getApplicationContext(),
" " + position, Toast.LENGTH_SHORT).show();
holder.helloTxt.setText("Test");
Toast.makeText(activity.getApplicationContext(),
holder.helloTxt.getText().toString(),
Toast.LENGTH_LONG).show();
}
});
}
vi.setOnClickListener(new OnItemClickListener(position));
return vi;
}
#Override
public void onClick(View v) {
Log.v("CustomAdapter", "=====Row button clicked=====");
}
/********* Called when Item click in ListView ************/
private class OnItemClickListener implements OnClickListener {
private int mPosition;
OnItemClickListener(int position) {
mPosition = position;
}
#Override
public void onClick(View arg0) {
}
}
}
Problem is, I am not able to change the text view text to "Test".
Note : If I see the value in Toast by doing "holder.helloTxt.getText().toString()" it shows me "Test".
I don't know why this problem is arising.Any help will be highly appreciated.
Thanks

Finally I got the solution to my question and guess what it was a minor updation in the code.
I updated my code to :
final ViewHolder holder;
inside getView() of CustomAdapter instead of declaring it globally.
Once again, thanking you all for your answers.
It helped me to look into my code in detail.

Try this hope this helps
vi = convertView;
if (vi == null) {
vi = inflater.inflate(R.layout.xmlfile, null);
holder = new ViewHolder();
holder.helloTxt= (TextView) vi.findViewById(R.id.hearTxt);
holder.parentLayout= (RelativeLayout) vi
.findViewById(R.id.parentLayout);
vi.setTag(holder);
}else
holder=(ViewHolder)vi.getTag();
holder.parentLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(activity.getApplicationContext(),
" " + position, Toast.LENGTH_SHORT).show();
holder.helloTxt.setText("Test");// not required
// just change the value of text in your list(which you are passing to the adapter) at corresponding position and then notify the list
notifyDataSetChanged();
Toast.makeText(activity.getApplicationContext(),
holder.helloTxt.getText().toString(),
Toast.LENGTH_LONG).show();
}
});
return vi;
It will display the text "test" but when you scroll, it will again changed to its original value so you have to change the value in the list also which you are sending to the adapter
Also in your case the problem is, when you update the text of your TextView, it gets updated for the time being that's why you are getting the TextView text in your Toast. But in order to show the updated text in ListView, you have to notify the List. But when you do so, your TextView resets to original value. So all you have to do is to take a global String variable and intialise that to your initial value whatever you want like this
private String yourText="initial text"
and in getView() set your TextView text to this variable like this
holder.helloTxt.setText(yourText);
and when you click your parentLayout,just assign, this string the value you want and notify the list
yourText="test";
notifyDataSetChanged();
and this will do the trick. But remember this works only when you have single row, if you have multiple rows you have to take a String array.

Do you perform a holder = vi.getTag(); in case the convertView not is null?
This is necessary when a view is already created to reinitialise it in the state it was.

Problem is, I am not able to change the text view text to "Test".
you are doing it wrong. Let's say your adapter is made of String. What I would have expected, is
if (convertView == null) {
// inflate stuff
// create older
// set the older in the converView's tag
} else {
// retriewholder
}
// here you set the String in the holder at position:
String tmpString = getItem(position);
holder.helloTxt.setText(tmpString);
holder.parentLayout.setTag(position);
Inside the onClick, you can retrieve the position trough the tag object, and update the String in the dataset and call notifyDataSetChanged

Your problem is you didnot touch the parent layout. Make sure that your finger can touch the parentLayout, you can add padding for it. Or you can try
holder.helloTxt.setOnClickListener(...)
instead of parentLayout.

I've seen a lot of ways but for me the simple way is pass component view to adapter. Then you can change you need. See an example below:
Link

Page curl animation to flip between views of a viewflipper

I've come across several examples of the page curl animation as well as viewflippers . Is it possible to navigate between children of a viewflipper via a page curl animation . The animations i have applied to viewflippers till now were very basic such as a slide-in/slide-out and I was wondering if the same could be done/has already be implemented using a page-curl animation.

There is an open source android project here: http://code.google.com/p/android-page-curl/.
I found another one here: https://github.com/harism/android_page_curl/.
But there is no native implementation if that is what you are asking.

You need to import one module library for this, from HERE
After that use following code:-
item_page.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/image"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:contentDescription="#string/app_name"
android:scaleType="centerCrop" />
<TextView
android:id="#+id/text"
android:padding="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMediumInverse"
android:textColor="#android:color/black" />
</LinearLayout>
</ScrollView>
activity_flipper_view_controller.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:flip="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/darker_gray"
android:paddingLeft="10dp"
android:text="#string/header"
android:textAppearance="#android:style/TextAppearance.Large" />
<com.aphidmobile.flip.FlipViewController
android:id="#+id/flip_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
flip:orientation="horizontal" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/darker_gray"
android:paddingLeft="10dp"
android:text="#string/footer"
android:textAppearance="#android:style/TextAppearance.Large" />
</LinearLayout>
FlipperAdapter.java
package pratiksha.com.pagecurlviewdemo;
import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.List;
import pratiksha.com.pagecurlviewdemo.R;
/**
* Created by User(LPT-APR2015-02) on 11/7/2016.
*/
public class FlipperAdapter extends BaseAdapter {
private AppCompatActivity appCompatActivity;
private List<String> strings;
private int[] drawableIds = {R.mipmap.ic_launcher, R.mipmap.page1, R.mipmap.page2, R.mipmap.ic_launcher,
R.mipmap.page2, R.mipmap.page1, R.mipmap.page2, R.mipmap.ic_launcher,
R.mipmap.page1};
public FlipperAdapter(AppCompatActivity appCompatActivity, List<String> strings) {
super();
this.strings = strings;
this.appCompatActivity = appCompatActivity;
}
#Override
public int getCount() {
return strings.size();
}
#Override
public String getItem(int position) {
return strings.get(position);
}
#Override
public long getItemId(int position) {
return strings.indexOf(getItem(position));
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
LayoutInflater inflater = (LayoutInflater) appCompatActivity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
// If holder not exist then locate all view from UI file.
if (convertView == null) {
// inflate UI from XML file
convertView = inflater.inflate(R.layout.item_page, parent, false);
// get all UI view
holder = new ViewHolder(convertView);
// set tag for holder
convertView.setTag(holder);
} else {
// if holder created, get tag from view
holder = (ViewHolder) convertView.getTag();
}
holder.textView.setText(getItem(position));
holder.imageView.setImageResource(drawableIds[position]);
return convertView;
}
private static class ViewHolder {
private TextView textView;
private ImageView imageView;
public ViewHolder(View v) {
imageView = (ImageView)v.findViewById(R.id.image);
textView = (TextView) v.findViewById(R.id.text);
}
}
}
Main Activity.java
package pratiksha.com.pagecurlviewdemo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import com.aphidmobile.flip.FlipViewController;
import java.util.ArrayList;
public class FlipperViewController extends AppCompatActivity {
private FlipViewController flipViewController;
private FlipperAdapter adapter;
private ArrayList<String> stringArrayList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_flipper_view_controller);
flipViewController = (FlipViewController)findViewById(R.id.flip_view);
stringArrayList = new ArrayList<>();
readDataFromAssets();
//create and attach adapter to flipper view
adapter = new FlipperAdapter(this, stringArrayList);
flipViewController.setAdapter(adapter);
}
private void readDataFromAssets() {
for(int i=1;i<10;i++)
stringArrayList.add("Page Number "+i);
}
}