I need to make a listview keep the selected view highlighted until another item is chosen, in that case the previous view removes the highlight and the latest clicked gets the highlight.
I tried not to do this and with a radio button but it isnt working.
It's actually pretty easy:
In the custom layout for the individual listview item, make sure it has the attribute:
android:background="?android:attr/activatedBackgroundIndicator" >
By way of example, here's a listview item layout from the HoneycombGallery sample that ships with the SDK (located in the title_list_item.xml file:
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp"
android:gravity="bottom"
android:textAppearance="?android:attr/textAppearanceMedium"
android:background="?android:attr/activatedBackgroundIndicator" >
</TextView>
That attribute will cause the background color to change based on whether the individual list item is selected or not.
i m novice to android so i found this question interesting and finally i succeeded after 1 and half hour ;-)
here is the code:
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
listinflater.xml
android:id="#+id/tvItem"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="TextView" />
PreservelistitemActivity.java
package com.mehuljoisar;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
public class PreservelistitemActivity extends Activity {
//declaring variable
ListView listView1;
MyAdapter adapter1;
Integer length,i;
String[] data = {"Mehul","Milind","Aamir","Amitabh","Mehul","Milind","Aamir","Amitabh","Mehul","Milind","Aamir","Amitabh","Mehul","Milind","Aamir","Amitabh","Mehul","Milind","Aamir","Amitabh","Mehul","Milind","Aamir","Amitabh","Mehul","Milind","Aamir","Amitabh","Mehul","Milind","Aamir","Amitabh","Mehul","Milind","Aamir","Amitabh"};
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//binding to the view
listView1 = (ListView)findViewById(R.id.listView1);
//set adapter
adapter1=new MyAdapter(PreservelistitemActivity.this,data);
listView1.setAdapter(adapter1);
}
public class MyAdapter extends BaseAdapter{
private final Activity context;
private final String[] data;
public MyAdapter(Activity context,
String[] data) {
// TODO Auto-generated constructor stub
super();
this.context=context;
this.data=data;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return data.length;
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = context.getLayoutInflater();
convertView = inflater.inflate(R.layout.listinflater, null);
final TextView tvItem = (TextView)convertView.findViewById(R.id.tvItem);
tvItem.setText(data[position]);
listView1.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
/* length=parent.getAdapter().getCount();
for(i=0;i<length;i++)
{
//clear
if(i==position)
{
//set
}
}
*/
v.setSelected(true);
}
});
return convertView;
}
}
}
Related
I have 24 EditTexts and I want to have one EditText in each row.
Note: this code is working properly, but I want to add one EditText in one row.
I want to add one EditText per row.
Means I want to set 24 EditTexts in 24 separate rows, not 24 EditText in one row.
This is lyt_listview_activity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/ res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/listViewMain"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
And this is-lyt_listview_list.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:background="#android:color/white"
android:orientation="horizontal" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:textColor="#android:color/black"
android:layout_height="wrap_content"
android:text="15dp" />
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#android:color/black"
android:ems="10" >
<requestFocus />
</EditText>
</LinearLayout>
This is -ListviewActivity.java
package com.example.testlistview;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
public class ListviewActivity extends Activity {
private String[] arrText =
new String[]{"Text1","Text2","Text3","Text4"
,"Text5","Text6","Text7","Text8","Text9","Text10"
,"Text11","Text12","Text13","Text14","Text15"
,"Text16","Text17","Text18","Text19","Text20"
,"Text21","Text22","Text23","Text24"};
private String[] arrTemp;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.lyt_listview_activity) ;
arrTemp = new String[arrText.length];
MyListAdapter myListAdapter = new MyListAdapter();
ListView listView = (ListView) findViewById(R.id.listViewMain);
listView.setAdapter(myListAdapter);
}
private class MyListAdapter extends BaseAdapter{
#Override
public int getCount() {
// TODO Auto-generated method stub
if(arrText != null && arrText.length != 0){
return arrText.length;
}
return 0;
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return arrText[position];
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
//ViewHolder holder = null;
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
LayoutInflater inflater = ListviewActivity.this.getLayoutInflater();
convertView = inflater.inflate(R.layout.lyt_listview_list, null);
holder.textView1 = (TextView) convertView.findViewById(R.id.textView1);
holder.editText1 = (EditText) convertView.findViewById(R.id.editText1);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.ref = position;
holder.textView1.setText(arrText[position]);
holder.editText1.setText(arrTemp[position]);
holder.editText1.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
}
#Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
#Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
arrTemp[holder.ref] = arg0.toString();
}
});
return convertView;
}
private class ViewHolder {
TextView textView1;
EditText editText1;
int ref;
}
}
}
In lyt_listview_list.xml you only have one EditText.
Those are your rows, and therefore, there's only one EditText (and a TextView) in each row
How many rows you see is determined by getCount(), and that's returning arrText.length, or 24.
As far as "adding another row". You can't add anything to an array. You need to use an Arraylist in your adapter. In which case, you'd likely want ArrayAdapter and not BaseAdapter
before input
barcode: ____________
QTY: ________________
after input
when barcode has detect the input consist records
barcode:______apple______
+ apple1 + apple2 +apple3 +apple4
QTY:______________________
The + is a clickable circle button.
What method do you suggest. drop down? but wont the both QTY be affected??
You can use Android PopupWindow show as dropdown list
see in this links http://rajeshandroiddeveloper.blogspot.in/2013/07/android-popupwindow-example-in-listview.html
android.widget.PopupWindow can be used to display an arbitrary view. The popup window is a floating container that appears on top of the current activity.
I am going to explain how to use popupwindow in list view. For example in listview item you have details button means you can use this popupwindow to show those details in this window. Lets see how to do it.
Step 1 : Main.xml
You can use either list view or any other Composite listviews:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:orientation="vertical"
>
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
</RelativeLayout>
Step 2 : listviewchild.xml
You can design your own custom view.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linear_item"
android:layout_width="fill_parent"
android:layout_height="100dp"
android:gravity="right"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="15dp"
android:layout_toRightOf="#+id/textview_name"
android:src="#drawable/ic_launcher" />
</RelativeLayout>
Step 3 :
Your MainActivity.java
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;
public class MainActivity extends Activity {
String TAG = "MainActivity.java";
String popUpContents[];
PopupWindow popupWindowDogs;
ListView listView1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView1=(ListView)findViewById(R.id.listView1);
listView1.setAdapter(new MyAddapter(MainActivity.this)); // binding the list view.
/*
* initialize pop up window items list
*/
// add items on the array dynamically
// format is Company Name:: ID
List<String> dogsList = new ArrayList<String>();
dogsList.add("Samsung");
dogsList.add("Google");
dogsList.add("Yahoo");
dogsList.add("Microsoft");
// convert to simple array
popUpContents = new String[dogsList.size()];
dogsList.toArray(popUpContents);
/*
* initialize pop up window
*/
popupWindowDogs = popupWindowDogs();
}
/*
*
*/
public PopupWindow popupWindowDogs() {
// initialize a pop up window type
PopupWindow popupWindow = new PopupWindow(this);
// the drop down list is a list view
ListView listViewDogs = new ListView(this);
// set our adapter and pass our pop up window contents
listViewDogs.setAdapter(dogsAdapter(popUpContents));
// set the item click listener
listViewDogs.setOnItemClickListener(new DogsDropdownOnItemClickListener());
// some other visual settings
popupWindow.setFocusable(true);
popupWindow.setWidth(250);
popupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
// set the list view as pop up window content
popupWindow.setContentView(listViewDogs);
return popupWindow;
}
/*
* adapter where the list values will be set
*/
private ArrayAdapter<String> dogsAdapter(String dogsArray[]) {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, dogsArray) {
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// setting the ID and text for every items in the list
String text = getItem(position);
// visual settings for the list item
TextView listItem = new TextView(MainActivity.this);
listItem.setText(text);
listItem.setTag(position);
listItem.setTextSize(22);
listItem.setPadding(10, 10, 10, 10);
listItem.setTextColor(Color.WHITE);
return listItem;
}
};
return adapter;
}
}
Step 4:
Your Adapter class
class MyAddapter extends BaseAdapter {
Context rContext;
private LayoutInflater rInflater;
private Activity activity;
public MyAddapter(Context c) {
rInflater = LayoutInflater.from(c);
rContext = c;
}
public MyAddapter(Activity imagebinding) {
// TODO Auto-generated constructor stub
activity = imagebinding;
rContext = imagebinding;
rInflater = LayoutInflater.from(imagebinding);
rContext = imagebinding;
rInflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 10;
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(final int position, View convertView,
ViewGroup parent) {
// TODO Auto-generated method stub
convertView = rInflater.inflate(R.layout.child, null);
final MyDat mydat = new MyDat();
mydat.imageView1=(ImageView)convertView.findViewById(R.id.imageView1);
mydat.imageView1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
popupWindowDogs.showAsDropDown(v, -5, 0);
}
});
return convertView;
}
class MyDat {
ImageView imageView1;
}
}
Step 5 :
Your Popup Windows items Click listener
You can use this if you want proceed furtherly for activity transitions.
import android.content.Context;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Toast;
public class DogsDropdownOnItemClickListener implements OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) {
// get the context and main activity to access variables
Context mContext = v.getContext();
MainActivity mainActivity = ((MainActivity) mContext);
// add some animation when a list item was clicked
Animation fadeInAnimation = AnimationUtils.loadAnimation(v.getContext(), android.R.anim.fade_in);
fadeInAnimation.setDuration(10);
v.startAnimation(fadeInAnimation);
// dismiss the pop up
mainActivity.popupWindowDogs.dismiss();
// get the text and set it as the button text
Toast.makeText(mContext, "Selected Positon is: " + arg2, 100).show();
}
}
I have an ArrayList<String> List which contains some items from the listview all_list. How can I select these items in the list view all_list programmatically by checking the ArrayList<String> List contents?
for e.g., listview all_list contains [0] apple
[1] orange
[2] banana
In ArrayList<String> List, I have orange so I want item on position 1 on the listview all_list to be selected (highlighted) automatically.
I have tried using all_list.setItemChecked(), but it does nothing and shuts down the application. I am performing the operation after listing the adapter.
set an onItemClickListener to the listview such that on click, you set a boolean flag that sets the checkbox in each row to selected. then call notifyDataSetChanged()
Try this
MainActivity.java
package com.example.multiseekbar;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
public class MainActivity extends Activity {
ListView listView1;
ArrayList<ModelClass> modelClass = new ArrayList<ModelClass>();
FruitSelectAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
modelClass.add(new ModelClass("Orange", true));
modelClass.add(new ModelClass("Apple", false));
modelClass.add(new ModelClass("Banana", false));
modelClass.add(new ModelClass("Grapes", false));
listView1 = (ListView) findViewById(R.id.listView1);
adapter = new FruitSelectAdapter(MainActivity.this, modelClass);
listView1.setAdapter(adapter);
listView1.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
if(modelClass.get(arg2).isSelected()){
modelClass.get(arg2).setSelected(false);
}else{
modelClass.get(arg2).setSelected(true);
}
adapter.notifyDataSetChanged();
}
});
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.multiseekbar.MainActivity" >
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="fill_parent"
>
</ListView>
</RelativeLayout>
FruitSelectAdapter.java
package com.example.multiseekbar;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.TextView;
public class FruitSelectAdapter extends BaseAdapter
{
private Activity activity;
private LayoutInflater inflater;
private ArrayList<ModelClass> modelClass=null;
public FruitSelectAdapter(Activity activity, ArrayList<ModelClass> modelClass) {
this.activity = activity;
this.modelClass = modelClass;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return modelClass.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return modelClass.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
final ViewHolder holder;
if (inflater == null)
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
holder =new ViewHolder();
convertView = inflater.inflate(R.layout.row1, null);
holder.txtFruitName = (TextView)convertView.findViewById(R.id.txtFruitName);
holder.cbFruitSelectStatus = (CheckBox)convertView.findViewById(R.id.cbFruitSelectStatus);
holder.linLayBackground = (LinearLayout) convertView.findViewById(R.id.linLayBackground);
convertView.setTag(holder);
}else{
holder = (ViewHolder)convertView.getTag();
}
holder.txtFruitName.setText(modelClass.get(position).getFruitName());
holder.cbFruitSelectStatus.setChecked(modelClass.get(position).isSelected());
if(modelClass.get(position).isSelected()){
holder.linLayBackground.setBackgroundColor(Color.parseColor("#80ccff"));
}else{
holder.linLayBackground.setBackgroundColor(Color.parseColor("#FFFFFF"));
}
return convertView;
}
class ViewHolder{
TextView txtFruitName;
CheckBox cbFruitSelectStatus;
LinearLayout linLayBackground;
}
}
row1.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:id="#+id/linLayBackground"
android:layout_height="70dp"
android:orientation="horizontal"
>
<TextView
android:id="#+id/txtFruitName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Fruit name"
android:layout_weight="1"
android:textSize="16sp"
android:textColor="#000000" />
<CheckBox
android:id="#+id/cbFruitSelectStatus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false" />
</LinearLayout>
ModelClass.java
package com.example.multiseekbar;
public class ModelClass {
String fruitName;
boolean isSelected=false;
public ModelClass(String fruitName, boolean isSelected) {
this.fruitName = fruitName;
this.isSelected = isSelected;
}
public String getFruitName() {
return fruitName;
}
public void setFruitName(String fruitName) {
this.fruitName = fruitName;
}
public boolean isSelected() {
return isSelected;
}
public void setSelected(boolean isSelected) {
this.isSelected = isSelected;
}
}
What I need is a Horizontal scrollable ListView that serves as a horizontally scrollable menu.
I searched for a solution and came up with the this library.
I am trying to implement it.sephiroth.android.library.widget.AdapterView.OnItemClickListener on it.sephiroth.android.library.widget.HListView object in a DialogFragment.
I can get the list to populate but I can't seem to be able to attach listeners to the item.
I have been trying for 2 days to figure this out, but no game. This feature is still not working. So I turn to the old WWW for salvation..
This is my DialogFragment XML fragment_layout.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"
android:background="#800000"
android:descendantFocusability="blocksDescendants" >
<it.sephiroth.android.library.widget.HListView
android:id="#+id/hlvPlacesListScrollMenu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:scrollbars="none"
android:divider="#android:color/transparent"
/>
this is my viewitem.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:background="#800000"
android:clickable="false"
android:focusable="false"
android:orientation="vertical" >
<ImageButton
android:id="#+id/ibScrollMenuImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#800000"
android:clickable="false"
android:focusable="false"
android:scaleType="centerCrop" />
<TextView
android:id="#+id/tvScrollMenuTitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:clickable="false"
android:focusable="false"
android:gravity="center_horizontal"
android:textColor="#f4f4f4" />
</LinearLayout>
This is my main_activity_layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/llDialogFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#34f34f"
android:orientation="vertical"
tools:context=".MainActivity" >
</LinearLayout>
Pretty basic.
My MainActicity is :
package com.example.hscrollviewtest;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.Menu;
public class MainActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
LifeStatsDialogFragment menuFragment = new LifeStatsDialogFragment();
ft.add(R.id.llDialogFragment, menuFragment).commit();
}
#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;
}
}
the Dialogfrgment .java :
package com.example.hscrollviewtest;
import it.sephiroth.android.library.widget.AdapterView;
import it.sephiroth.android.library.widget.AdapterView.OnItemClickListener;
import it.sephiroth.android.library.widget.HListView;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class LifeStatsDialogFragment extends DialogFragment implements
OnItemClickListener {
private HListView scroll;
private View rootView;
private HorizontalScrollMenuAdapter mAdapter;
final String[] IMAGE_TITLE = new String[] { "Home", "Work", "School",
"Sport" };
final int[] MENU_IMAGES = new int[] { R.drawable.ic_circle_home,
R.drawable.ic_circle_work, R.drawable.ic_circle_school,
R.drawable.ic_circle_gym };
public LifeStatsDialogFragment newInstance() {
return new LifeStatsDialogFragment();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
rootView = inflater.inflate(R.layout.fragment_layout, container, false);
mAdapter = new HorizontalScrollMenuAdapter(getActivity(),
R.layout.fragment_layout, R.id.tvScrollMenuTitle, IMAGE_TITLE,
MENU_IMAGES);
scroll = (HListView) rootView
.findViewById(R.id.hlvPlacesListScrollMenu);
scroll.setAdapter(mAdapter);
scroll.invalidate();
scroll.setOnItemClickListener(this);
for (int i = 0; i < scroll.getAdapter().getCount(); i++) {
Log.i(this.getClass().getSimpleName(), "first item in scroll : "
+ scroll.getChildAt(i) + "and its clickable?? "
+ scroll.getAdapter().getItemViewType(i) + "\n");
}
Log.i(this.getClass().getSimpleName(),
"The number of children for HlistView is: "
+ scroll.getParent().toString());
return rootView;
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
}
}
and this is the adapter(which works when I use it in the HorizontalVariableListViewDemo):
package com.example.hscrollviewtest;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.TextView;
public class HorizontalScrollMenuAdapter extends ArrayAdapter<String>{
private String[] mButtonText;
private int[] mIconId;
private final String TAG = this.getClass().getSimpleName();
//Constructor
public HorizontalScrollMenuAdapter(Context context, int resource,
int textViewResourceId, String[] menuItemName, int[] menuItemImage) {
super(context, resource, textViewResourceId, menuItemName);
// TODO Auto-generated constructor stub
mButtonText = menuItemName;
mIconId = menuItemImage;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return mIconId.length;
}
#Override
public String getItem(int position) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater mInflater = (LayoutInflater) parent.getContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.viewitem, null);
holder = new ViewHolder();
holder.name = (TextView) convertView.findViewById(R.id.tvScrollMenuTitle);
holder.icon=(ImageButton) convertView.findViewById(R.id.ibScrollMenuImage);
//holder.icon.setBackgroundResource(android.R.color.transparent);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
holder.name.setText(mButtonText[position]);
holder.icon.setImageResource(mIconId[position]);
holder.icon.setTag(mIconId[position]);
Log.d(TAG,"returned view to fragment");
return convertView;
}
static class ViewHolder{
TextView name;
ImageButton icon;
}
}
I hope one of you can see my blindspot.
Thaks
Probably you are implementing the wrong OnItemClickListener.
Try to use
public class LifeStatsDialogFragment extends DialogFragment implements
it.sephiroth.android.library.widget.AdapterView.OnItemClickListener {
//...
}
I would try 2 things:
Put the fragment in the xml layout in the first place, and avoid add in the onCreate.
What happens in the onItemClick? - its currently empty. Try using an independent onItemClickListener:
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(getActivity(), "clicked", Toast.LENGTH_SHORT);
}
});
Hey guys i have a ListActivity... a very simple at that... and it keeps throwing NullPointer Exception though i have done it exactly as the Sample List7 except that i have used the Layout inflater... below is the code... Can u plz comment the error i have done here??
import java.util.Vector;
import android.app.Activity;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemSelectedListener;
public class CustomList extends ListActivity implements OnItemSelectedListener{
Vector<String> VTitle;
Vector<String> VDescription;
TextView display;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
VTitle.addElement("First Title");
VTitle.addElement("Second Title");
VTitle.addElement("Third Title");
VTitle.addElement("Fourth Title");
VDescription.addElement("1 Description");
VDescription.addElement("2 Description");
VDescription.addElement("3 Description");
VDescription.addElement("4 Description");
display = (TextView)findViewById(R.id.display);
setListAdapter(new CustomAdapter(this));
}
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
display.setText(VTitle.elementAt(position));
}
class CustomAdapter extends BaseAdapter {
protected Activity mContext;
public CustomAdapter(Activity context) {
mContext = context;
// TODO Auto-generated constructor stub
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return VTitle.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View row = convertView;
if(row==null) {
LayoutInflater inflater = mContext.getLayoutInflater();
row = inflater.inflate(R.layout.row,null);
}
TextView title = (TextView)row.findViewById(R.id.title);
title.setText(VTitle.elementAt(position));
TextView description = (TextView)row.findViewById(R.id.description);
description.setText(VDescription.elementAt(position));
ImageView image = (ImageView)row.findViewById(R.id.image);
switch(position){
case 0:
image.setImageResource(R.drawable.check);
break;
case 1:
image.setImageResource(R.drawable.dos);
break;
case 2:
image.setImageResource(R.drawable.smily);
break;
case 3:
image.setImageResource(R.drawable.wrong);
break;
}
return(row);
}
}
#Override
public void onItemSelected(AdapterView parent, View v, int position, long id) {
// TODO Auto-generated method stub
display.setText(VTitle.elementAt(position));
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}
And the xmls are like this....
"main.xml"
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id = "#+id/display"
android:text="something"
/>
<ListView
android:id="#android:id/list"
android:layout_width="fill_parent"
android:drawSelectorOnTop="false"
android:layout_height="0px">
</ListView>
</LinearLayout>
"row.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">
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</ImageView>
<TextView
android:text="Title"
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
<TextView
android:text="description"
android:id="#+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
</LinearLayout>
VTitle and VDescription aren't initialized
Before accessing one of these attributes, you should :
VTitle = new Vector<String>();
VDescription = new Vector<String>();
Moreover in java, the first letter of an attribute name should be lowercase, and in android this first letter should be an m, to denote a member field.