I am in the making of a shopping list using a ListView with custom items with the posibility of increasing the amount of that item and also decreasing the amount.
At the moment, I get the right amount of items when I load them in to the shopping list, as can seen in the image below:
the image of the ListView and problem
But the problem occurs when I am trying to increase/decrese the amount of each item by clicking the buttons, only the last item in the ListView gets updated by the clicks.
The reason for this is because i am re-declaring the TextView for each item, and the others (probably?) doesn't get stored anywhere. So i read about "setTag()" and "getTag()" and tried to implement but this didn't work either (maybe beacuse i did it wrong).
I am using a custom class called "Item" which stores each item and the amount of that item.
Otherwise, this is the custom adapter and the .xml
public class ShoppingListAdapter extends ArrayAdapter<Item> {
int amount;
TextView amountText;
private Context mContext;
int mResource;
public ShoppingListAdapter(#NonNull Context context, int resource, #NonNull ArrayList<Item> objects) {
super(context, resource, objects);
mContext = context;
mResource = resource;
}
#NonNull
#Override
public View getView(final int position, #Nullable View convertView, #NonNull ViewGroup parent) {
//get the item information
String name = getItem(position).getName();
String brand = getItem(position).getBrand();
int id = getItem(position).getId();
String img = getItem(position).getImg();
amount = getItem(position).getAmount();
//all info
Item item = new Item(name,id,brand,img);
LayoutInflater inflater = LayoutInflater.from(mContext);
convertView = inflater.inflate(mResource,parent,false);
TextView tVName = (TextView) convertView.findViewById(R.id.textView2);
ImageView imgV = (ImageView) convertView.findViewById(R.id.imageView);
TextView tVId = (TextView) convertView.findViewById(R.id.textView3);
amountText = (TextView) convertView.findViewById( R.id.amountItem );
tVName.setText(name);
amountText.setText( String.valueOf( amount ) );
amountText.setTag(position);
Picasso.with(mContext).load(img).into(imgV); // tVBrand.setText(brand);
//tVId.setText(id);
//Buttons
Button addButton =(Button) convertView.findViewById(R.id.addValue);
Button subButton =(Button) convertView.findViewById(R.id.subValue);
addButton.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View view) {
getItem(position).incrementAmount();
//This gives the right position and the amount for all items
Log.d("ifIncreased", " " + getItem(position).getAmount());
Log.d("ifIncreased", position + "" );
TextView newText = (TextView) amountText.getTag(position);
newText.setText( String.valueOf( getItem(position).getAmount()));
}
} );
subButton.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View view) {
if(getItem(position).getAmount() == 1)
{
//TODO remove from list;
}
else{
getItem(position).decrementAmount();
Log.d("ifIncreased", position + "" );
amountText.setText( String.valueOf( getItem(position).getAmount()) );
}
}
} );
return convertView;
}
and the 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:weightSum="100">
<ImageView
android:id="#+id/imageView"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_weight="33.3"
app:srcCompat="#mipmap/ic_launcher" />
<LinearLayout
android:layout_width="212dp"
android:layout_height="60dp"
android:layout_weight="33.3"
android:orientation="vertical">
<TextView
android:id="#+id/textView3"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_below="#+id/textView2"
android:gravity=""
android:paddingLeft="10dp"
android:text="TextView3" />
<TextView
android:id="#+id/textView2"
android:layout_width="match_parent"
android:layout_height="30dp"
android:gravity=""
android:paddingLeft="10dp"
android:text="TextView2" />
</LinearLayout>
<LinearLayout
android:layout_width="112dp"
android:layout_height="60dp"
android:gravity="center"
android:orientation="horizontal">
<TextView
android:id="#+id/amountItem"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:text="1"
android:textStyle="bold" />
<Button
android:id="#+id/addValue"
android:layout_width="40dp"
android:layout_height="33dp"
android:layout_gravity="center"
android:text="+"
android:textAlignment="center"
android:textSize="12sp" />
<Button
android:id="#+id/subValue"
android:layout_width="40dp"
android:layout_height="33dp"
android:layout_gravity="center"
android:text="–"
android:textAlignment="center"
android:textSize="12sp" />
</LinearLayout>
</LinearLayout>
So- since I am having the right values in the onClick functions, my question is, how can I change each TextView (the amount of that item) from the items in the full list?
Try this to update single value into adapter.. make public method and that method called into fragment or activity when you updated any value and refresh adapter.
/**
* this method used to update list item when broad cast received.
* #param percentage
* #param position
*/
public void updateProgress(double percentage, final int position) {
feedBackVoList.get(position).setPercentage(percentage);
notifyItemChanged(position);
}
after that updated value set into textview when you called notifyItemChanged(position) reset again that row or refresh that row.
Related
I recently started to use ListView on Android Application and I'm not making it to display at the screen.
I saw many tutorials on how to do a custom Adapter and followed it line by line, but at the end I wasn't able to make the ListView display on my screen, I even let a fixed Text in one TextView to display at the ListView but it still didn't displayed it.
This is the constructor of my entity code:
public Classificacao(int colocacao, int time, int pontos) {
this.colocacao = colocacao;
this.time = time;
this.pontos = pontos;
}
This my Custom Adapter that extends "ArrayAdapter"
private Context context;
private ArrayList<Classificacao> classificacaoList;
ClassificacaoAdapter(Context context, ArrayList<Classificacao> classificacaoList) {
super(context, R.layout.layout_classificacao, classificacaoList);
this.context = context;
this.classificacaoList = classificacaoList;
}
#SuppressLint("SetTextI18n")
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(convertView == null){
convertView = layoutInflater.inflate(R.layout.layout_classificacao, parent, false);
}
TextView colocacao = convertView.findViewById(R.id.texto1);
colocacao.setText(Integer.toString(classificacaoList.get(position).getColocacao()));
ImageView imagem = convertView.findViewById(R.id.imagem1);
imagem.setImageResource(classificacaoList.get(position).getImagem());
TextView nome = convertView.findViewById(R.id.texto2);
nome.setText(classificacaoList.get(position).getTime());
TextView pontos = convertView.findViewById(R.id.texto3);
pontos.setText(Integer.toString(classificacaoList.get(position).getPontos()));
return convertView;
}
This the layout "activity_atividade02" that have the ListView, and some others Text views that I won't display here.
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
This is the layout "layout_classificacao" that will be filled by the adapter
<LinearLayout 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="wrap_content"
android:paddingTop="20dp">
<TextView
android:id="#+id/texto1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textColor="#android:color/black"
android:textSize="30sp" />
<ImageView
android:id="#+id/imagem1"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_weight="1"
android:contentDescription="imagem do time"
app:srcCompat="#drawable/flamengo" />
<TextView
android:id="#+id/texto2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:textColor="#color/colorPrimary"
android:textSize="30sp" />
<TextView
android:id="#+id/texto3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textColor="#android:color/black"
android:textSize="30sp" />
</LinearLayout>
And this is the main class "Atividade02"
that start everything
public class Atividade02 extends AppCompatActivity {
ListView listView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_atividade02);
listView = findViewById(R.id.listView);
ArrayList<Classificacao> classificacaoArrayList = new ArrayList<>();
classificacaoArrayList.add(new Classificacao(1, 2,46));
classificacaoArrayList.add(new Classificacao(2, 1,42));
classificacaoArrayList.add(new Classificacao(3,0,38));
classificacaoArrayList.add(new Classificacao(4,3,35));
classificacaoArrayList.add(new Classificacao(5,5,33));
classificacaoArrayList.add(new Classificacao(6,4,33));
ArrayAdapter classificacaoAdapter = new ClassificacaoAdapter(this, classificacaoArrayList);
listView.setAdapter(classificacaoAdapter);
}
}
Resuming, the ListView isn't displaying the "ClassificacaoAdapter" and I want it to do it.
Make sure adapter has the method getItemcount() and it returns the classificacaoList.size(). It should not return 0;
Well... it was a pretty obvious problem, in the main layout activity_atividade02 there was a LinearLayout above the ListView that it's layout_height was set to match_parent and it was occupying the entire layout and not letting the ListView being displayed.
I test your code as you write and found an error here and it works normally but I comment imageView line because you don't define it in Classificacao class
an error here
TextView nome = convertView.findViewById(R.id.texto2);
nome.setText(classificacaoList.get(position).getTime());
setText() accept String only ..but you pass integer rather than String you can do that
nome.setText(""+classificacaoList.get(position).getTimee());
or use
Integer.toString( classificacaoList.get(position).getTimee() )
as you use in other lines
please add getCount() method in your ClassificacaoAdapter class, it is an override method. It will return the size of the list,if you will not override this it will return 0 as your list size.
public int getCount() {
return classificacaoList .size();
}
So I have the following fuction inside an adapter class. I want my Toast to print the text of a TextView when a certain icon is clicked but turns out I'm unable to get that TextView inside of my onClick function.
public TitleParentViewHolder onCreateParentViewHolder(ViewGroup viewGroup) {
View view = inflater.inflate(R.layout.list_routines, viewGroup, false);
ImageView playIcon = (ImageView) view.findViewById(R.id.playRoutine);
playIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
TextView rutNameView = (TextView) v.findViewById(R.id.parentTitle);
String rutName = rutNameView.getText().toString(); //THIS crashes because rutNameView is null
Toast.makeText(v.getContext(), rutName + " was played",
Toast.LENGTH_LONG).show();
}
});
return new TitleParentViewHolder(view);
}
I've tried defining rutName outside of teh onClick but its value changes so that doesn't make sense (it's first initalized as "" and then assigned a value that I get from an API).
The text I'm trying to get is the one inside of the TextView with id parentTitle in a CardView. I have several of these cardViews. I don't know if it's relevant but here's the code.
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_marginTop="5dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/playRoutine"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_margin="8dp"
android:src="#drawable/play_gris"
android:visibility="visible" />
<TextView
android:id="#+id/parentTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:padding="16dp"
android:textSize="20dp"
android:textStyle="bold" />
<ImageButton
android:id="#+id/expandArrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_margin="8dp"
android:src="#drawable/expande_de_lista"
android:visibility="visible" />
</RelativeLayout>
</android.support.v7.widget.CardView>
Do this -
public TitleParentViewHolder onCreateParentViewHolder(ViewGroup viewGroup) {
View view = inflater.inflate(R.layout.list_routines, viewGroup, false);
ImageView playIcon = (ImageView) view.findViewById(R.id.playRoutine);
TextView rutNameView = (TextView) view.findViewById(R.id.parentTitle);
playIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String rutName = rutNameView.getText().toString();
Toast.makeText(v.getContext(), rutName + " was played",
Toast.LENGTH_LONG).show();
}
});
return new TitleParentViewHolder(view);
}
Write below declaration code before playIcon.setOnClickListener
TextView rutNameView = (TextView) v.findViewById(R.id.parentTitle);
I am struggling from Listview , how to add two value in this Listview , i am using SimpleAdapter but i can't add two value , Listview shows only one item from database , how to add two values from mysql database . How can i add two values ?
//this is my layout file
//main activity
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="0dp">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="New Class :"
android:textSize="17dp"
android:fontFamily="serif"
android:textColor="#000"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:layout_weight="1"/>
<Spinner
android:id="#+id/new_class"
style="#style/Platform.Widget.AppCompat.Spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:background="#drawable/spinner_background"
android:popupBackground="#fff"
android:fontFamily="serif"
android:layout_marginRight="10dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listView"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:choiceMode="multipleChoice"
android:focusable="false"/>
</LinearLayout>
</LinearLayout>
//this is my row activity file for custom layout
<?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" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/thumbImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:text="sample text"
android:layout_weight="1"
android:textAppearance="?android:attr/textAppearanceMedium" />
<CheckedTextView
android:id="#+id/itemCheckBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:focusable="false"
android:focusableInTouchMode="false"/>
</LinearLayout>
</RelativeLayout>
//this is my code
listview.setOnItemClickListener(new OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// TODO Auto-generated method stub
sparseBooleanArray = listview.getCheckedItemPositions();
String ValueHolder = "" ;
int i = 0 ;
while (i < sparseBooleanArray.size()) {
if (sparseBooleanArray.valueAt(i)) {
ValueHolder += data4.get(sparseBooleanArray.keyAt(i)) + ",";
}
i++ ;
}
ValueHolder = ValueHolder.replaceAll("(,)*$", "");
Toast.makeText(MainActivity.this, ValueHolder, Toast.LENGTH_LONG).show();
}
});
how to create custom array adapter please help me
just use custom array adapter as shown below
this is my adapter class
public class ItemAdapter extends ArrayAdapter<User> {
// declaring our ArrayList of items
private ArrayList<User> objects;
/* here we must override the constructor for ArrayAdapter
* the only variable we care about now is ArrayList<User> objects,
* because it is the list of objects we want to display.
*/
public ItemAdapter(Context context, int textViewResourceId, ArrayList<User> objects) {
super(context, textViewResourceId, objects);
this.objects = objects;
}
/*
* we are overriding the getView method here - this is what defines how each
* list item will look.
*/
public View getView(int position, View convertView, ViewGroup parent){
// assign the view we are converting to a local variable
View v = convertView;
// first check to see if the view is null. if so, we have to inflate it.
// to inflate it basically means to render, or show, the view.
if (v == null) {
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.list_item, null);
}
/*
* Recall that the variable position is sent in as an argument to this method.
* The variable simply refers to the position of the current object in the list. (The ArrayAdapter
* iterates through the list we sent it)
*
* Therefore, i refers to the current User object.
*/
User i = objects.get(position);
if (i != null) {
// This is how you obtain a reference to the TextViews.
// These TextViews are created in the XML files we defined.
TextView tt = (TextView) v.findViewById(R.id.toptext);
TextView ttd = (TextView) v.findViewById(R.id.toptextdata);
TextView mt = (TextView) v.findViewById(R.id.middletext);
TextView mtd = (TextView) v.findViewById(R.id.middletextdata);
TextView bt = (TextView) v.findViewById(R.id.bottomtext);
TextView btd = (TextView) v.findViewById(R.id.desctext);
// check to see if each individual textview is null.
// if not, assign some text!
if (tt != null){
tt.setText("Name: ");
}
if (ttd != null){
ttd.setText(i.getName());
}
if (mt != null){
mt.setText("Price: ");
}
if (mtd != null){
mtd.setText("$" + i.getPrice());
}
if (bt != null){
bt.setText("Details: ");
}
if (btd != null){
btd.setText(i.getDetails());
}
}
// the view must be returned to our activity
return v;
}
}
set an instance of custom adapter in your list view like this
ItemAdapter itemAdapter = new ItemAdapter(...);
listView.setAdapter(itemAdapter)
if it helped please verify the answer
I have a listview populating using cursor in which custom row exist. There are set of textviews in the row. I also have a image view in the row. I would like to set an image based on a value of the textview. My code is
public class DisplayCards extends Activity {
private Divyadesamdb dbHelper;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pasuram);
dbHelper = new Divyadesamdb(this);
dbHelper.open();
// Clean all data
dbHelper.deleteAllPasurams();
// Add some data
dbHelper.insertPasurams();
Intent intent = getIntent();
String category = intent.getStringExtra(MainActivity.EXTRA_CATEGORY);
String start = intent.getStringExtra(MainActivity.EXTRA_START);
String ending = intent.getStringExtra(MainActivity.EXTRA_ENDING);
// Generate ListView from SQLite Database
displayListView(category, start, ending);
}
#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;
}
private void displayListView(String mcategory, String mstart, String mending) {
String category = mcategory;
String starting = mstart;
String ending = mending;
int rowsFound = 0;
Cursor cursor = dbHelper.fetchAllPasurams(category, starting, ending);
/*
* How many rows returned from the query
*/
rowsFound = cursor.getCount();
// the desired columns to be bound
String[] columns = new String[] {
Divyadesamdb.PASURAMS_COLUMN_PAASURAMNUMBER,
Divyadesamdb.PASURAMS_COLUMN_AAYIRAM,
Divyadesamdb.PASURAMS_COLUMN_AZHWAAR,
Divyadesamdb.PASURAMS_COLUMN_CATEGORY,
Divyadesamdb.PASURAMS_COLUMN_MANGALASASANAMON,
Divyadesamdb.PASURAMS_COLUMN_PAASURAM_EN_STR,
Divyadesamdb.PASURAMS_COLUMN_SUBCATEGORY,
Divyadesamdb.PASURAMS_COLUMN_TITLE,
Divyadesamdb.PASURAMS_COLUMN_TITLENUMBER };
// the XML defined views which the data will be bound to
int[] to = new int[] { R.id.tvPaasuramNumber, R.id.tvAayiram,
R.id.tvAzhwaar, R.id.tvCategory, R.id.tvMangalasasanamOn,
R.id.tvPaasuram, R.id.tvSubCategory, R.id.tvTitle,
R.id.tvtvTitleNumber };
// create the adapter using the cursor pointing to the desired data
// as well as the layout information
MyCursorAdapter dataAdapter = new MyCursorAdapter(this,
R.layout.paasuram_single_item, cursor, columns, to, 0);
ListView listView = (ListView) findViewById(R.id.listView1);
listView.setAdapter(dataAdapter);
}
// extend the SimpleCursorAdapter to create a custom class where we
// can override the getView to change the row colors
private class MyCursorAdapter extends SimpleCursorAdapter {
public MyCursorAdapter(Context context, int layout, Cursor c,
String[] from, int[] to, int flags) {
super(context, layout, c, from, to, flags);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// get reference to the row
View view = super.getView(position, convertView, parent);
// check for odd or even to set alternate colors to the row
// background
// want to get the value of this text view,
// but not getting handle.
LayoutInflater inflater = ((Activity) Context).getLayoutInflater();
TextView azhwaarView = (TextView) view.getTag(R.id.textViewAzhwaar);
String azhVal = azhwaarView.getText().toString();
if (position % 2 == 0) {
view.setBackgroundColor(Color.rgb(238, 233, 233));
} else {
view.setBackgroundColor(Color.rgb(255, 255, 255));
}
return view;
}
}
}
not sure how to get the handle of textview. Getting Null pointer exception. Any help is greatly appreciated.
paasuram_single_item.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="wrap_content"
android:background="#drawable/mybackground"
android:orientation="vertical" >
<ImageView
android:id="#+id/ivAzhwaar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="false"
android:layout_margin="10dp"
android:contentDescription="#string/Azhwaar"
android:padding="5dp"
android:src="#drawable/nammalwar" />
<TextView
android:id="#+id/tvtvTitleNumber"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/ivAzhwaar"
android:layout_toRightOf="#+id/ivAzhwaar"
android:text="TitleNumber"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/tvHyphan1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/tvtvTitleNumber"
android:layout_alignBottom="#+id/tvtvTitleNumber"
android:layout_toRightOf="#+id/tvtvTitleNumber"
android:text=" "
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/tvTitle"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignBaseline="#+id/tvHyphan1"
android:layout_alignBottom="#+id/tvHyphan1"
android:layout_alignParentRight="true"
android:layout_toRightOf="#+id/tvHyphan1"
android:text="Title"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/tvAayiram"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/tvtvTitleNumber"
android:layout_below="#+id/tvtvTitleNumber"
android:text="Aayiram"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/tvHyphan2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/tvtvTitleNumber"
android:layout_toRightOf="#+id/tvAayiram"
android:text=" - "
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/tvCategory"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/tvHyphan2"
android:layout_alignBottom="#+id/tvHyphan2"
android:layout_toRightOf="#+id/tvHyphan2"
android:text="Category"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/tvHyphan3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/tvCategory"
android:layout_alignBottom="#+id/tvCategory"
android:layout_toRightOf="#+id/tvCategory"
android:text=" - "
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/tvSubCategory"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/tvHyphan3"
android:layout_alignBottom="#+id/tvHyphan3"
android:layout_toRightOf="#+id/tvHyphan3"
android:text="SubCategory"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/tvPaasuram"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/tvAayiram"
android:layout_below="#+id/tvAayiram"
android:padding="5dp"
android:text="paasuram"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/tvPaasuramNumber"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/tvPaasuram"
android:layout_alignBottom="#+id/tvPaasuram"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:text="PaasuramNumber"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/tvAzhwaar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/tvMangalasasanamOn"
android:layout_alignBottom="#+id/tvMangalasasanamOn"
android:layout_alignLeft="#+id/tvPaasuram"
android:text="Azhwaar"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/tvMangalasasanamOn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/tvCategory"
android:layout_below="#+id/tvPaasuram"
android:layout_centerHorizontal="true"
android:text="MangalasasanamOn"
android:textAppearance="?android:attr/textAppearanceSmall" />
</RelativeLayout>
Only two errors are their:
1).You are not inflating any view here:
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
View view = inflater.inflate(R.layout.custom_inflator_layout,parent,false);
TextView azhwaarView = (TextView) view.getTag(R.id.textViewAzhwaar);
String azhVal = azhwaarView.getText().toString();
return view;
}
2).You are not seting any text to textview ,thats y when you trying to get the text
it gives null pointer.
In order to resolve the problem I have done the following:
created a table column with int datatype
got the R.drawable.xxx and stored the int to the database
retrieved the data and set to the image in the row level.
Thanks for all the help! Appreciate every help rendered. Big thanks once again.
I have a list fragment displaying my custom list items which consist of a relative layout containing images and text etc.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#color/main_background"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:paddingRight="20dp"
android:paddingBottom="10dp"
android:descendantFocusability="blocksDescendants" >
<ImageView
android:id="#+id/source_image"
android:layout_width="30dp"
android:layout_height="30dp"
android:background="#color/black"
android:layout_alignParentLeft="true"
android:contentDescription="#string/info" />
<TextView
android:id="#+id/item_description"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:textStyle="bold"
android:layout_toRightOf="#+id/source_image"
android:textColor="#color/black"
android:paddingRight="5dp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:paddingLeft="5dp"
android:textAlignment="center"
android:text="#string/item_desc" />
<ImageView
android:id="#+id/arrow_image"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginRight="30dp"
android:layout_alignParentRight="true"
android:contentDescription="#string/info"
android:src="#drawable/arrow_right" />
<HorizontalScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scrollbars="none"
android:layout_centerInParent="true"
android:background="#color/main_background"
android:layout_below="#+id/item_description">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/white"
android:layout_gravity="fill_horizontal"
android:layout_marginRight="20dp"
android:padding="5dp"
android:orientation="horizontal" >
<ImageView
android:id="#+id/item_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/info"
android:src="#drawable/chameleon" />
<ImageView
android:id="#+id/item_image2"
android:paddingLeft="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/info"
android:gravity="center"
android:src="#drawable/chameleon" />
<ImageView
android:id="#+id/item_image3"
android:paddingLeft="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/info"
android:gravity="center"
android:src="#drawable/chameleon" />
</LinearLayout>
</HorizontalScrollView>
</RelativeLayout>
I am trying to set up an OnItemClickListener so when the user clicks anywhere on the list item, a new Intent is started.
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
//Populate list view with array objects
adapter = new HomeListItemAdapter(items, getActivity());
listView = getListView();
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Toast toast = Toast.makeText(listView.getContext(), "CLICKED", Toast.LENGTH_SHORT);
toast.show();
}
});
}
I am attempting this as shown above but can't seem to get the OnItemClickListener to work (just testing with Toast instead of Intent for now). Where am I going wrong?
Thanks
EDIT: Added custom list adapter code
public class HomeListItemAdapter extends BaseAdapter {
private List<HomeListItem> items;
private Context context;
private int numItems = 0;
public HomeListItemAdapter(final List<HomeListItem> items, Context context) {
this.items = items;
this.context = context;
this.numItems = items.size();
}
public int getCount() {
return numItems;
}
public HomeListItem getItem(int position) {
return items.get(position);
}
public long getItemId(int position) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
// Get the current list item
final HomeListItem item = items.get(position);
// Get the layout for the list item
final RelativeLayout itemLayout = (RelativeLayout) LayoutInflater.from(context).inflate(R.layout.list_item, parent, false);
// Set the the item picture(s)
ImageView itemImage = (ImageView) itemLayout.findViewById(R.id.item_image);
itemImage.setImageDrawable(item.getItemPic());
//Set the profile picture / source picture
ImageView sourceImage = (ImageView) itemLayout.findViewById(R.id.source_image);
sourceImage.setImageDrawable(item.getSourcePic());
// Set the text label as defined in our list item
TextView itemDesc = (TextView) itemLayout.findViewById(R.id.item_description);
AssetManager am = context.getAssets();
Typeface font = Typeface.createFromAsset(am, "Raleway-Thin.ttf");
itemDesc.setTypeface(font);
itemDesc.setText(item.getText());
return itemLayout;
}
}
Try extending ListFragment (instead of just a normal Fragment). Then you can override onListItemClicked:
public void onListItemClick(ListView l, View v, int pos, long id)
This gives you the list, view, position, and id, so you should be able to do whatever you need.
Could you try setting the HozizontalScrollView to not get focus with the XML attribute
android:focusable="false"
If you have a TextView inside the row then that will take focus when the row is clicked. This will mean that onListItemClick is not called. You either need to have an OnClickListener on the TextView or remove focus from the TextView.
See ListFragment OnListItemClick not being called
Try this sample project for costum ListFragment. It is a very good example with a costum ListFragment showing 2 types of views for phone and tablets.
http://s000.tinyupload.com/index.php?file_id=09444774931653041243
Courtsey
http://jcrazyandroider.blogspot.in/2015/01/download-links.html