My ListView in Activity:
ListView listView1 = (ListView) menu.findViewById(R.id.menuList);
String menuItems[] = new String[] { "My Wants", "Profile", "Notifications",
"Feedback", "Logout" };
listView1.setAdapter(new SideMenuAdapter(this, menuItems, listView1));
listView1.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
if (position == 1) {
Intent intent = new Intent(FeedListViewActivity.this,
UserProfileActivity.class);
startActivity(intent);
}
if (position == 0) {
showMyWants();
}
}
});
menu is :
menu = inflater.inflate(R.layout.horz_scroll_menu, null);
horz_scroll_menu.xml is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/menu"
android:layout_width="1dp"
android:layout_height="1dp"
android:background="#FFFFFFFF"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#FF000000"
android:text="Menu"
android:textColor="#FFFFFFFF"
android:gravity="center" />
<ListView
android:id="#+id/menuList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:cacheColorHint="#FFFFFFFF"
android:scrollbars="none" >
</ListView>
</LinearLayout>
My SideMenuAdapter:
public class SideMenuAdapter extends BaseAdapter {
private static final int TYPE_MAX_COUNT = 2;
private static LayoutInflater inflater = null;
private Activity activity;
public ImageLoader imageLoader;
public static String[] values;
ListView myList;
public SideMenuAdapter(Activity a, String[] sa, ListView lv) {
values = sa;
activity = a;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
myList = lv;
}
public int getCount() {
return values.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public static class ViewHolder {
public TextView mainText;
public TextView sideText;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = new ViewHolder();
View vi = convertView;
LayoutInflater inflater = activity.getLayoutInflater();
vi = inflater.inflate(R.layout.side_menu_list_item, null);
holder.mainText = (TextView) vi.findViewById(R.id.mainText_sideMenu);
holder.sideText = (TextView) vi.findViewById(R.id.sideText_sideMenu);
vi.setTag(holder);
holder.mainText = (TextView) vi.findViewById(R.id.mainText_sideMenu);
holder.sideText = (TextView) vi.findViewById(R.id.sideText_sideMenu);
holder.mainText.setText(values[position]);
if (position == 2) {
holder.sideText.setText("3");
holder.sideText.setBackgroundResource(R.drawable.orange);
}
return vi;
}
#Override
public int getViewTypeCount() {
return TYPE_MAX_COUNT;
}
}
My Xml for ListView items:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/sideMenuListItem"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_horizontal"
android:orientation="horizontal"
android:padding="3dp" >
<TextView
android:id="#+id/sideText_sideMenu"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentRight="true"
android:clickable="true"
android:gravity="center"
android:textSize="20dp"
android:padding="5dp" />
<TextView
android:id="#+id/mainText_sideMenu"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#id/sideText_sideMenu"
android:clickable="true"
android:gravity="left|center_vertical"
android:textSize="20dp"
android:padding="5dp" />
</RelativeLayout>
when running this application on Emulator, if i click with mouse nothing happens. But when i select any item on the list using navigation buttons on the KeyBoard and click Enter, it works fine.
when running the app on a device. If i go on click any item of the list, like some 10-20 times it works sometimes.
Edit:
Actually everything worked fine when i was using predefined ArrayAdapter<String> and android.R.simple_list_item. But i want a custom adapter
why is it so?
Its because in my ListView item layout i added
android:clickable="true"
for both the TextViews. So when i click on the ListView item it indeed is a click on these TextView whose onClick is not implemented. Removing the clickable attribute from the TextViews solved my problem.
Thanks everyone
Try making the RelativeLayout clickable and focusable.
Layout File
<ListView android:id="#id/android:list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#000fff"
android:layout_weight="2"
android:drawSelectorOnTop="false">
</ListView>
Main Activity
public class MyListView extends ListActivity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, PENS));
getListView().setTextFilterEnabled(true);
}
static final String[] PENS = new String[]{
"MONT Blanc",
"Gucci",
"Parker",
"Sailor",
"Porsche Design",
"Rotring",
"Sheaffer",
"Waterman"
};
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
Object o = this.getListAdapter().getItem(position);
String pen = o.toString();
Toast.makeText(this, "You have chosen the pen: " + " " + pen, Toast.LENGTH_LONG).show();
}
}
try this one
http://www.mkyong.com/android/android-listview-example/
res/layout/list_fruit.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:textSize="20sp" >
</TextView>
ListView
public class ListFruitActivity extends ListActivity {
static final String[] FRUITS = new String[] { "Apple", "Avocado", "Banana",
"Blueberry", "Coconut", "Durian", "Guava", "Kiwifruit",
"Jackfruit", "Mango", "Olive", "Pear", "Sugar-apple" };
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// no more this
// setContentView(R.layout.list_fruit);
setListAdapter(new ArrayAdapter<String>(this, R.layout.list_fruit,FRUITS));
ListView listView = getListView();
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text
Toast.makeText(getApplicationContext(),
((TextView) view).getText(), Toast.LENGTH_SHORT).show();
}
});
}
}
Related
I am writing the basic task management application. I am using base adapter to work with ListView. I wonder how I can remove (a few) checked values from the list? And how I can remove only one value with long click?
if this posible with my adapter? I tried a few options but nothing worked.
Here is my code.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
>
<Button
android:id="#+id/btn1"
android:layout_width="50dp"
android:layout_height="40dp"
android:layout_alignParentRight="true"
android:text="\u2713"
android:background="#drawable/add_btn"
android:onClick="knopka2"/>
<EditText
android:id="#+id/input"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#id/btn1"
android:hint="put your task here"/>
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listView"
android:divider="#drawable/deriver"
android:layout_below="#+id/input"
android:layout_centerHorizontal="true"
android:choiceMode="multipleChoice" />
<TextView
android:id="#+id/ttl"
android:layout_below="#id/listView"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/tryClear"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/ttl"
android:onClick="tryClear"
/>
</RelativeLayout>
This is my Activity:
public class Trird extends AppCompatActivity {
Button btn;
EditText input4;
TextView ttl;
ListView list;
public static ArrayList<String> taskList = new ArrayList<String>();
SparseBooleanArray sparseBooleanArray;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.third);
input4 = (EditText) findViewById(R.id.input);
btn = (Button) findViewById(R.id.btn1);
list = (ListView) findViewById(R.id.listView);
ttl = (TextView)findViewById(R.id.ttl);
}
public String[] putToArray() {
String ag = input4.getText().toString().trim();
if (ag.length() != 0) {
taskList.add(ag);
input4.setText("");
}
String[] abc = taskList.toArray(new String[taskList.size()]);
return abc;
}
public void knopka2(View v) {
final String[] ListViewItems = putToArray(); //
list = (ListView) findViewById(R.id.listView);
list.setAdapter(new MyAdapter(ListViewItems, this));
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View tv, int i, long id) {
///tv.setBackgroundColor(Color.YELLOW);
///ttl.setText("selected: " + list.getAdapter().getItem(i));
sparseBooleanArray = list.getCheckedItemPositions();
String ValueHolder = "";
int a = 0;
while (a < sparseBooleanArray.size()) {
if (sparseBooleanArray.valueAt(a)) {
ValueHolder += ListViewItems[sparseBooleanArray.keyAt(a)] + ",";
}
a++;
}
ValueHolder = ValueHolder.replaceAll("(,)*$", "");
Toast.makeText(Trird.this, "ListView Selected Values = " + ValueHolder, Toast.LENGTH_LONG).show();
if(ValueHolder!=null){
taskList.remove(ValueHolder);
}
}
});
}
}
This is my adapter:
public class MyAdapter extends BaseAdapter {
private final Context context;//Context for view creation
private final String[] data;//raw data
public MyAdapter(String[] data, Context context){
this.data=data;
this.context=context;
}
//how many views to create
public int getCount() {
return data.length;
}
//item by index (position)
public Object getItem(int i) {
return data[i];
}
//ID => index of given item
public long getItemId(int i) {
return i;
}
//called .getCount() times - for each View of item in data
public View getView(int i, View recycleView, ViewGroup parent) {
if(recycleView==null)recycleView = LayoutInflater.from(context).inflate(R.layout.item,null);
((TextView)recycleView).setText(data[i]);//show relevant text in reused view
return recycleView;
}
}
And this is how looks like item in ListView.
<CheckedTextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="24sp"
android:drawableRight="?android:attr/listChoiceIndicatorMultiple"
/>
The problem is that you are trying removing item using the ListView remove methode.
Just remove the selected item from the list using the remove() method of your Adapter.
A possible way to do that would be:
CheckedTextView checkedText= baseAdapter.getItem([POSITION OF THE SELECTED ITEM]);
baseAdapter.remove(checkedText);
baseAdapter.notifyDataSetChanged();
put this code inside the wanted button click and there you go.
I want to delete my listview items when I press delete button but the problem is I should first press listview row then press delete button to remove it. I want to delete items immediately after pressing delete button not first press on listview then press delete button
Can you help me in this situation?
and this is my code
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.wholeshop);
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
// getting values from selected ListItem
final View view = v;
final int pos =position;
deleteone= (Button)v.findViewById(R.id.bdeleteone);
deleteone.getTag(position);
deleteone.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
deleteone.setTag(view);
productsList.remove(pos);
ListAdapter adapter = new SimpleAdapter(
wholeShop.this, productsList,
R.layout.listshop, new String[] { "name",
"spinn","price"},
new int[] { R.id.wholename, R.id.wholespinn,R.id.wholeprice });
// updating listview
setListAdapter(adapter);
}
});
}
});
}
and this is my xmlfile for listview:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#ffffff">
<ListView
android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="110dp"
android:layout_marginTop="50dp"
android:descendantFocusability="blocksDescendants"
>
</ListView>
and:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:background="#ffffff"
android:weightSum="100">
<TextView
android:id="#+id/wholename"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_weight="40"
android:paddingLeft="5dip"
android:text="Flower Name"
android:textColor="#000000" />
<TextView
android:id="#+id/wholespinn"
android:layout_width="66dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="2dp"
android:paddingRight="10dip"
android:text="Flower spinn"
android:textColor="#000000"
android:layout_weight="30"/>
<TextView
android:id="#+id/wholeprice"
android:text="Flower price"
android:layout_gravity="right"
android:paddingRight="10dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#000000"
android:layout_weight="30"/>
<Button
android:id="#+id/bdeleteone"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:clickable="true"
android:text="Del"
android:layout_marginRight="10dp"
android:layout_weight="30"
android:focusable="false"
/>
</LinearLayout>
You are going with wrong way.
You may have to look this Example.
You have create Your Own Adapter like:
public class ListAdapter extends ArrayAdapter<String> {
customButtonListener customListner;
public interface customButtonListener {
public void onButtonClickListner(int position,String value);
}
public void setCustomButtonListner(customButtonListener listener) {
this.customListner = listener;
}
private Context context;
private ArrayList<String> data = new ArrayList<String>();
public ListAdapter(Context context, ArrayList<String> dataItem) {
super(context, R.layout.child_listview, dataItem);
this.data = dataItem;
this.context = context;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if (convertView == null) {
LayoutInflater inflater = LayoutInflater.from(context);
convertView = inflater.inflate(R.layout.child_listview, null);
viewHolder = new ViewHolder();
viewHolder.text = (TextView) convertView
.findViewById(R.id.childTextView);
viewHolder.button = (Button) convertView
.findViewById(R.id.childButton);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
final String temp = getItem(position);
viewHolder.text.setText(temp);
viewHolder.button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (customListner != null) {
customListner.onButtonClickListner(position,temp);
}
}
});
return convertView;
}
public class ViewHolder {
TextView text;
Button button;
}
}
I try a listview but when I click on an element I have not my toast
public class MarkersListActivity extends ListActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String[] titles = new String[] {"Titre 1", "Titre 2", "Titre 3", "Titre 4"};
String[] des = new String[] {"des 1", "des 2", "des 3", "des 4"};
setListAdapter( new MarkerListArrayAdapter(this, titles, des));
}
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
//get selected items
String selectedValue = (String) getListAdapter().getItem(position);
Toast.makeText(this, selectedValue, Toast.LENGTH_SHORT).show();
}
}
MarkerListArrayAdapter
public class MarkerListArrayAdapter extends ArrayAdapter<String> {
private final Context context;
private final String[] titleText;
private final String[] descriptionText;
public MarkerListArrayAdapter(Context context, String[] titles, String[] description) {
super(context, R.layout.marker_list_layout, titles);
this.context = context;
this.titleText = titles;
this.descriptionText = description;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.marker_list_layout, parent, false);
TextView title = (TextView) rowView.findViewById(R.id.title);
TextView description = (TextView) rowView.findViewById(R.id.description);
ImageView imageView = (ImageView) rowView.findViewById(R.id.image);
title.setText(titleText[position]);
description.setText(descriptionText[position]);
imageView.setBackgroundColor(Color.argb(255,255,0,0));
return rowView;
}
}
The xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp" >
<ImageView
android:id="#+id/image"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="20dp"
android:layout_marginTop="5dp"
android:src="#drawable/transparent" >
</ImageView>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#+id/label"
android:textSize="30sp" >
</TextView>
<TextView
android:id="#+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#+id/label"
android:textSize="15sp" />
</LinearLayout>
</LinearLayout>
Thanks
You should use the:
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
method instead.
Let you Activity: implements AdapterView.OnItemClickListener
and then in the onCreate add this command:
list.setOnItemClickListener(this);
You have not called super of onListItemClick()...
Do as follows:
protected void onListItemClick(ListView l, View v, int position, long id){
super.onListItemClick(l, v, position, id);
}
You have to set setContentView(R.layout.activity_main) method in MarkersListActivity class and your listview ID should be "#android:id/list"
Add this layout activity_main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="8dp"
android:paddingRight="8dp">
<ListView android:id="#android:id/list" //Important this one.
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FF00"
android:layout_weight="1"
android:drawSelectorOnTop="false"/>
</LinearLayout>
Have a look at the official documentation for listactivity
https://developer.android.com/reference/android/app/ListActivity.html
My activity contains a textview and under that it has gridview elements. Stage 1: When the activity starts, it adjusts the elements in the order that I have set(like item1, item2,..) stage1 picture. Stage 2: But when I click on edittext, the gridview elements get adjusted to allocate space for the softkeypad stage2 picture. Stage 3: So when I press back button, the soft keypad disappears(as usual), but the order of gridview elements are getting changed stage3 picture. The order of child items of gridview changes. Can anyone please suggest me how to avoid this uncertainty in the order? Below is my entire code and xml file, though I think these are not that much necessary to solve this issue.
public class PresentActivity extends Activity {
GridView gridView;
static final String[] TEXT = new String[] {
"item1", "item2","item3", "item4", "item5","item6","item7","item8" };
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setGridView();
}
public void setGridView()
{
gridView = (GridView)findViewById(R.id.gridView1);
gridView.setAdapter(new ImageAdapter(this, TEXT));
gridView.setNumColumns(3);
gridView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
String currentText=(String) ((TextView)v.findViewById(R.id.grid_item_label)).getText();
Toast.makeText(getApplicationContext(), currentText, Toast.LENGTH_SHORT).show();
}
});
}
}
Here is my custom adapter class.
public class ImageAdapter extends BaseAdapter{
private Context context;
private final String[] textValues;
public ImageAdapter(Context context, String[] textValues) {
this.context = context;
this.textValues = textValues;
}
#Override
public int getCount() {
return textValues.length;
}
#Override
public Object getItem(int arg0) {
return null;
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if (convertView == null) {
gridView = new View(context);
// get layout from imagewithtext.xml
gridView = inflater.inflate(R.layout.imagewithtext, null);
// set value into textview
TextView textView = (TextView) gridView
.findViewById(R.id.grid_item_label);
textView.setText(textValues[position]);
// set image based on selected text
ImageView imageView = (ImageView) gridView
.findViewById(R.id.grid_item_image);
String extractedText = textValues[position];
System.out.println("the position value is>>>>>>"+position);
if (extractedText.equals("item1")) {
imageView.setImageResource(R.drawable.icon);
}
else if (extractedText.equals("item2")) {
imageView.setImageResource(R.drawable.icon);
} else if (extractedText.equals("item3")) {
imageView.setImageResource(R.drawable.icon);
}else if(extractedText.equals("item4")){
imageView.setImageResource(R.drawable.icon);
} else if (extractedText.equals("item5")) {
imageView.setImageResource(R.drawable.icon);
} else if (extractedText.equals("item6")) {
imageView.setImageResource(R.drawable.pic1);
}
else if(extractedText.equals("item7")){
imageView.setImageResource(R.drawable.pic1);
}
else{
imageView.setImageResource(R.drawable.pic1);
}
} else {
gridView = (View) convertView;
}
return gridView;
}
}
xml file which contains gridview:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<Button
android:id="#+id/button1"
android:layout_width="200px"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:text="#string/button"
android:onClick="button1"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:text="#string/present_location"
/>
</RelativeLayout>
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/editText1_hint"
/>
<GridView
android:id="#+id/gridView1"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:gravity="center"
android:columnWidth="100dp"
android:stretchMode="columnWidth"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</GridView>
</LinearLayout>
Let's assume your items contain just 1 ImageView and 1 TextView (for the sake of simplicity).
Your getView method in the Adapter should do this:
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder vh;
if (convertView == null) {
final LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(R.layout.imagewithtext,null);
//Custom ViewHolder, you have to create it in the same class.
vh = new ViewHolder();
vh.imageView = convertView.findViewById(R.id.imageView1);
vh.textView = convertView.findViewById(R.id.textView1);
convertView.setTag(vh);
} else {
vh = (ViewHolder) convertView.getTag();
}
vh.imageView.setImageResource(R.drawable.whatever);
vh.textView.setText("Whatever text you want to set here");
return gridView;
}
And in your adapter, just add this:
private class ViewHolder{
public ViewHolder(){}
public ImageView imageView;
public TextView textView;
//Add any views you want to use in getView here
}
GridViewActivity:-(This is main Activity)
public class GridVieweActivity extends Activity {
GridView gridView;
static final String[] TEXT = new String[] { "item1", "item2", "item3",
"item4", "item5", "item6", "item7", "item8" };
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setGridView();
}
public void setGridView() {
gridView = (GridView) findViewById(R.id.gridView1);
gridView.setAdapter(new ImageAdapter(this, TEXT));
gridView.setNumColumns(3);
gridView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
String currentText = (String) ((TextView) v
.findViewById(R.id.textView1)).getText();
Toast.makeText(getApplicationContext(), currentText,
Toast.LENGTH_SHORT).show();
}
});
}
}
ImageAdapter:-
public class ImageAdapter extends BaseAdapter {
private Context context;
private final String[] textValues;
public ImageAdapter(Context context, String[] textValues) {
this.context = context;
this.textValues = textValues;
}
#Override
public int getCount() {
return textValues.length;
}
#Override
public Object getItem(int arg0) {
return null;
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if (convertView == null) {
gridView = new View(context);
// get layout from imagewithtext.xml
gridView = inflater.inflate(R.layout.imagewithtext, null);
// set value into textview
TextView textView = (TextView) gridView
.findViewById(R.id.textView1);
textView.setText(textValues[position]);
// set image based on selected text
ImageView imageView = (ImageView) gridView
.findViewById(R.id.imageView1);
String extractedText = textValues[position];
System.out.println("the position value is>>>>>>" + position);
if (extractedText.equals("item1")) {
imageView.setImageResource(R.drawable.ic_launcher);
} else if (extractedText.equals("item2")) {
imageView.setImageResource(R.drawable.ic_launcher);
} else if (extractedText.equals("item3")) {
imageView.setImageResource(R.drawable.ic_launcher);
} else if (extractedText.equals("item4")) {
imageView.setImageResource(R.drawable.ic_launcher);
} else if (extractedText.equals("item5")) {
imageView.setImageResource(R.drawable.ic_launcher);
} else if (extractedText.equals("item6")) {
imageView.setImageResource(R.drawable.ic_launcher);
} else if (extractedText.equals("item7")) {
imageView.setImageResource(R.drawable.ic_launcher);
} else {
imageView.setImageResource(R.drawable.ic_launcher);
}
} else {
gridView = (View) convertView;
}
return gridView;
}
}
main.xml:-
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<Button
android:id="#+id/button1"
android:layout_width="200px"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:onClick="button1"
android:text="Button" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="Present Location" />
</RelativeLayout>
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Hint" />
<GridView
android:id="#+id/gridView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="100dp"
android:gravity="center"
android:horizontalSpacing="10dp"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" >
</GridView>
</LinearLayout>
imagewithtext:-
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="64dp"
android:layout_height="64dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" >
</ImageView>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/imageView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:ellipsize="marquee"
android:text="TextView"
android:textSize="18sp" >
</TextView>
</RelativeLayout>
The above code is working fine.
For my listview, I want to be able to display multiple textviews within it, with each textview displaying the items of a specific array associated with it. Right now is what I have:
public class GreatestHits extends ListActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, Array1));
ListView lv = getListView();
lv.setTextFilterEnabled(true);
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String text = (String) ((TextView)view).getText();
}
});
}
static final String[] Array1 = new String[] {"Item1", "Item2"};
static final String[] Array2 = new String[] {"Item1", "Item2"};
static final String[] Array3 = new String[] {"Item1", "Item2"};
and the xml for R.layout.list_item:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:textSize="16sp"
android:id= "#+id/textView1"
>
</TextView>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:textSize="16sp"
android:id= "#+id/textView2"
>
</TextView>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:textSize="16sp"
android:id= "#+id/textView3"
>
</TextView>
How would I put array 2 and array 3 into the code so it can be displayed in the textviews of listview lv?
ArrayAdapter can only display data from one array in one textview. You will have to provide this functionality yourself by extending BaseAdapter yourself. I can't compile android code at the moment, so the following code is untested... but it should at least give you an indication of what you can do.
public class TripleArrayAdapter extends BaseAdapter {
private String[] array1, array2, array3;
private LayoutInflater inflater;
public TripleArrayAdapter(Context context, String[] a1, String[] a2, String[]a3) {
array1 = a1;
array2 = a2;
array3 = a3;
inflater =
(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return array1.length;
}
#Override
public Object getItem(int position) {
return null;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View currentView = convertView;
if(currentView==null) {
currentView = inflater.inflate(R.layout.list_item, parent, false);
}
TextView tView = (TextView)currentView.findViewById(R.id.textView1);
tView.setText(array1[position]);
tView = (TextView)currentView.findViewById(R.id.textView2);
tView.setText(array2[position]);
tView = (TextView)currentView.findViewById(R.id.textView3);
tView.setText(array3[position]);
return currentView;
}
}
Then, to use this adapter as your ListActivity's adapter, you would just say
setListAdapter(new TripleArrayAdapter(this, Array1, Array2, Array3));