Develop Reference

Custom Listview activity keep crashing

So I have this custom list adapter and listview thingy and I can't seem to get it to work. I've spent a couple of days now trying to figure how to fix it. Change this change that, nothing seems to work. Any idea? thanks
MainActivity.class
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ListView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActvty";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_inventory_actvity);
Log.d(TAG, "onCreate, Started");
ListView resList = (ListView)findViewById(R.id.inListView);
resClass wood = new resClass("Wood", 10);
resClass iron = new resClass("Iron", 50);
resClass meat = new resClass("Meat", 5);
ArrayList<resClass> resArrayList = new ArrayList<>();
resArrayList.add(wood);
resArrayList.add(iron);
resArrayList.add(meat);
ResListAdapter rsAdapter = new ResListAdapter(this, R.layout.activity_inventory_actvity, resArrayList);
resList.setAdapter(rsAdapter);
}
}
resClass.class
public class resClass {
private String resType;
private int resCount;
public resClass(String resType, int resCount) {
this.resType = resType;
this.resCount = resCount;
}
public String getResType() {
return resType;
}
public void setResType(String resType) {
this.resType = resType;
}
public int getResCount() {
return resCount;
}
public void setResCount(int resCount) {
this.resCount = resCount;
}
}
ResListAdapter.class
I'm guessing there is something wrong with the adapter. But I'm not really sure.
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import java.util.ArrayList;
class ResListAdapter extends ArrayAdapter<resClass>{
private static final String TAG = "ResListAdapter";
private Context mContext;
int mResource;
public ResListAdapter( Context context, int resource, ArrayList<resClass> objects) {
super(context, resource, objects);
mContext = context;
mResource = resource;
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
String resType = getItem(position).getResType();
int resCount = getItem(position).getResCount();
resClass res = new resClass(resType, resCount);
LayoutInflater rsInflater = LayoutInflater.from(mContext);
convertView = rsInflater.inflate(mResource, parent, false);
TextView resTypeView = (TextView)convertView.findViewById(R.id.res_name);
TextView resCountView = (TextView)convertView.findViewById(R.id.res_count);
resTypeView.setText(resType);
resCountView.setText(Integer.toString(resCount));
return convertView;
}
}
The xml files
MainActivity
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="p_darkness.lonemandevelopmentstudio.com.p_darkness.MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp"
android:id="#+id/inListView"/>
</RelativeLayout>
Custom layout for the listview
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="horizontal"
android:weightSum="100"
android:layout_height="match_parent">
<TextView
android:id="#+id/res_name"
android:textColor="#000"
android:textSize="17sp"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:gravity="center"
android:layout_weight="50"
android:text="res_name"
android:textAlignment="center"/>
<TextView
android:id="#+id/res_count"
android:textColor="#000"
android:textSize="15sp"
android:textAlignment="center"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:gravity="center"
android:layout_weight="50"
android:text="res_count"
/>
</LinearLayout>
It's been really frustrating guys hope I can find the solution by asking this time.

How do I retrieve the ID number of this text view

How do I retrieve the text of a specific textView? BEcause when I click an ID number it displays '1' in the textview of the next class in every text view I click. I used JSON array so it's kind of tricky for me. And yes I'm completely a beginner.
DisplayListView
package rjj.tutorial_jsonandlistview;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class DisplayListView extends AppCompatActivity {
String json_string;
JSONObject jsonObject;
JSONArray jsonArray;
ContactAdapter contactAdapter;
ListView listView;
SearchView sv;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.display_listview_layout);
listView = (ListView)findViewById(R.id.listview);
contactAdapter = new ContactAdapter(this,R.layout.row_layout);
listView.setAdapter(contactAdapter);
json_string = getIntent().getExtras().getString("json_data");
//Searchview
sv = (SearchView)findViewById(R.id.search);
sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
contactAdapter.getFilter().filter(newText);
return true;
}
});
//End of Searchview
try {
jsonObject = new JSONObject(json_string);
jsonArray = jsonObject.getJSONArray("server_response");
int count = 0;
String id ,firstname , surname, age , username, password;
while(count<jsonArray.length()){
JSONObject JO = jsonArray.getJSONObject(count);
id = JO.getString("id");
firstname = JO.getString("firstname");
surname = JO.getString("surname");
age = JO.getString("age");
username = JO.getString("username");
password = JO.getString("password");
Contacts contact = new Contacts(id, firstname, surname, age,username,password);
contactAdapter.add(contact);
count++;
}
} catch (JSONException e) {
e.printStackTrace();
}
}
public void hello(View view) {
Intent intent = new Intent(this, Update.class);
TextView textView = (TextView)findViewById(R.id.tx_id);
String id = textView.getText().toString();
intent.putExtra("id", id);
startActivity(intent);
}
}
My ContactAdapter Class:
package rjj.tutorial_jsonandlistview;
import android.content.Context;
import android.support.annotation.LayoutRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Julian on 7/20/2017.
*/
public class ContactAdapter extends ArrayAdapter {
List list = new ArrayList();
public ContactAdapter(#NonNull Context context, #LayoutRes int resource) {
super(context, resource);
}
public void add(Contacts object) {
super.add(object);
list.add(object);
}
#Override
public int getCount() {
return list.size();
}
#Nullable
#Override
public Object getItem(int position) {
return list.get(position);
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
View row;
row = convertView;
ContactHolder contactHolder;
if(row == null){
LayoutInflater layoutInflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = layoutInflater.inflate(R.layout.row_layout,parent,false);
contactHolder = new ContactHolder();
contactHolder.tx_id = (TextView)row.findViewById(R.id.tx_id);
contactHolder.tx_firstname = (TextView)row.findViewById(R.id.tx_firstname);
contactHolder.tx_surname = (TextView)row.findViewById(R.id.tx_surname);
contactHolder.tx_age = (TextView)row.findViewById(R.id.tx_age);
contactHolder.tx_username = (TextView)row.findViewById(R.id.tx_username);
contactHolder.tx_password = (TextView)row.findViewById(R.id.tx_password);
row.setTag(contactHolder);
} else{
contactHolder = (ContactHolder)row.getTag();
}
Contacts contacts = (Contacts)this.getItem(position);
contactHolder.tx_id.setText(contacts.getId());
contactHolder.tx_firstname.setText(contacts.getFirstname());
contactHolder.tx_surname.setText(contacts.getSurname());
contactHolder.tx_age.setText(contacts.getAge());
contactHolder.tx_username.setText(contacts.getUsername());
contactHolder.tx_password.setText(contacts.getPassword());
return row;
}
static class ContactHolder{
TextView tx_id, tx_firstname, tx_surname, tx_age, tx_username, tx_password;
}
}
My Update Class:
package rjj.tutorial_jsonandlistview;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
public class Update extends AppCompatActivity {
String id;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_update);
id = getIntent().getExtras().getString("id");
TextView textView = (TextView)findViewById(R.id.textView);
textView.setText(id);
}
}
My display_listview_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<android.widget.RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="rjj.tutorial_jsonandlistview.DisplayListView">
<SearchView
android:layout_width="match_parent"
android:layout_height="30dp"
android:id="#+id/search"
android:queryHint="Search..."/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/search"
android:id="#+id/listview">
</ListView>
</android.widget.RelativeLayout>
The row_layout.xml (which I use to display the JSON array)
<?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="75dp">
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_id"
android:layout_alignParentLeft="true"
android:text="ID"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
android:onClick="hello"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_firstname"
android:layout_toRightOf="#+id/tx_id"
android:text="Firstname"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_surname"
android:layout_toRightOf="#+id/tx_firstname"
android:text="Lastname"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_age"
android:layout_toRightOf="#+id/tx_surname"
android:text="Age"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_username"
android:layout_toRightOf="#+id/tx_age"
android:text="Username"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_password"
android:layout_toRightOf="#+id/tx_username"
android:text="Password"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
</RelativeLayout>

In method hello(View view) you don't need this string:
TextView textView = (TextView)findViewById(R.id.tx_id);
becouse the view in hello(View view) this is our TextView. Just cast it to TextView and get text from it:
String id = ((TextView)view).getText().toString();
Another and most universal approach: to change
TextView textView = (TextView)findViewById(R.id.tx_id);
to
TextView textView = (TextView)((ViewGroup)(view.getParent())).findViewById(R.id.tx_id);
In this way you can use any R.id for current list item.

How to add row to listView on button click in android studio?

I am using a custom adapter for my ListView which I already don't understand as much as I would like to. I can find information online on how to add a row to ListView but it doesn't integrate nicely into my code, I'm guessing because I'm using a custom adapter. I have my setOnClickListener() method for my button in my Main Activity and have been experimenting there but just cant figure it out I'm also not sure if my method is in the right place?
this is the mainActivity
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.Toast;
import static java.util.logging.Logger.global;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final String[] Chores = {""};
ListAdapter MyAdapter = new CustomAdapter(this, Chores);
ListView listViewObject = (ListView)findViewById(R.id.customListView_ID);
listViewObject.setAdapter(MyAdapter);
listViewObject.setOnItemClickListener(
new AdapterView.OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id){
String ChoreString = String.valueOf(parent.getItemAtPosition(position));
}
}
);
// this is where I am trying to have button click add another row to my listView
final Button button = (Button) findViewById(R.id.button_ID);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//this is where I am stuck
}
});
}
}
here is my CustomAdapter class
import android.content.Context;
import android.support.annotation.NonNull;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
class CustomAdapter extends ArrayAdapter{
public CustomAdapter(Context context, String[] choreText) {
super(context, R.layout.custon_listview_row, choreText);
}
#NonNull
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater myInflater = LayoutInflater.from(getContext());
View customView = myInflater.inflate(R.layout.custon_listview_row, parent, false);
String singleListItem = (String) getItem(position);
EditText choreText = (EditText) customView.findViewById(R.id.editText_ID);
ImageButton imageButton = (ImageButton) customView.findViewById(R.id.imageButton_ID);
choreText.setText(singleListItem, TextView.BufferType.EDITABLE);
imageButton.setImageResource(R.drawable.clock);
return customView;
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
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="com.example.emilythacker.chorelist.MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/customListView_ID"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:layout_marginTop="50dp" />
<Button
android:text="Add Chore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:id="#+id/button_ID" />
</RelativeLayout>
and custom_listview_row.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="60dp">
<ImageButton
android:layout_width="60dp"
android:scaleType="fitCenter"
app:srcCompat="#drawable/clock"
android:id="#+id/imageButton_ID"
android:layout_height="60dp"
android:background="#null"
android:layout_alignParentRight="true"
android:padding="5dp"
android:layout_weight="1" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:id="#+id/editText_ID"
android:layout_alignParentLeft="true"
android:alpha = ".5"
android:hint="Enter chore"
android:maxLines="1"
android:inputType="text"
/>
</RelativeLayout>

First make your list into an ArrayList instead of String array.
private ArrayList<String> arrayList;
In the buttons onClick
arrayList.add("New Item");
((ArrayAdapter)MyAdapter).notifyDataSetChanged();

public void onClick(View v) {
String stringToAdd = ... //
MyAdapter.add(stringToAdd);
}
You will need to add final to the adapter declaration for this to work:
final ListAdapter MyAdapter = new CustomAdapter(this, Chores);
EDIT
To add more than one row at a time:
public void onClick(View v) {
String[] rowsToAdd = ... //
MyAdapter.addAll(rowsToAdd);
}

Create a ListView with Text and Favorite Icon based on SQLite Database Data

I want to create a list where the listview will display a textview and an icon for each row. The diagram should be as follows:
Other than that, The data is retrieved from the database. The attribute of "favorite" will be checked first and if true, then the image in listview will be assigned with favorite_icon.png. Else, no icon need to be assigned.
I have been search for the related answer and tutorial, but all of them is too different from what I want and I cannot understand it very much. Hope somebody here can help me. Thank you in advance.

Here is what I got after I have done my Homework
First we set up a custom layout for listview and also for the row of the listview we will use later.
Here is the custom_listview_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">
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/customListView" />
</LinearLayout>
Here is the custom_listview_row.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:minHeight="64dp">
<ImageView
android:id="#+id/clv_imageView"
android:layout_width="32dp"
android:layout_height="32dp"
android:contentDescription="#string/empty"
android:layout_alignParentRight="true"
android:layout_marginLeft="9dp"
android:layout_alignParentTop="true"/>
<TextView
android:id="#+id/clv_textView"
android:layout_width="97dp"
android:layout_height="32dp"
android:layout_alignParentLeft="true"
android:gravity="center_vertical"
android:text="#string/tv_definition"
android:textIsSelectable="true" />
</RelativeLayout>
Then we need to customized how our Custom ArrayAdaptor will look and do.
But before that, make sure you have put your icon in the drawable folder.
Here is my MyPerformanceArrayAdapter.java
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class MyPerformanceArrayAdapter extends ArrayAdapter<DefinitionObject>{
private List<DefinitionObject> entries;
private Activity activity;
public MyPerformanceArrayAdapter(Activity a, int textViewResourceId, List<DefinitionObject> entries) {
super(a, textViewResourceId, entries);
this.entries = entries;
this.activity = a;
}
public static class ViewHolder{
public TextView item1;
public ImageView item2;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
ViewHolder holder;
if (v == null) {
LayoutInflater vi =
(LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.custom_listview_row, null);
holder = new ViewHolder();
holder.item1 = (TextView) v.findViewById(R.id.clv_textView);
holder.item2 = (ImageView) v.findViewById(R.id.clv_imageView);
v.setTag(holder);
}
else
holder=(ViewHolder)v.getTag();
final DefinitionObject custom = entries.get(position);
if (custom != null) {
holder.item1.setText(custom.getWord());
if(custom.getFav().equalsIgnoreCase("0"))
{
holder.item2.setImageResource(R.drawable.fav);
holder.item2.setVisibility(holder.item2.INVISIBLE);
}
else
{
holder.item2.setImageResource(R.drawable.fav2);
}
}
return v;
}
}
And lastly, here is my Activity to View the ListView using the CustomArrayAdaptor.
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.ListView;
public class TempCLV extends Activity {
private MySQLiteDefinitionHelper db;
String tblName = "";
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.custom_listview_main);
Intent msjIntent = getIntent();
tblName = msjIntent.getStringExtra(WordDefinitionHomeActivity.TABLENAME2);
refresh();
}
public void refresh()
{
db = new MySQLiteDefinitionHelper(this);
final List<DefinitionObject> values = db.getAllWords(tblName);
ListView mylist = (ListView)findViewById(R.id.customListView);
MyPerformanceArrayAdapter adapter = new MyPerformanceArrayAdapter(this, R.id.customListView, values);
mylist.setAdapter(adapter);
}
}

How can i show running app icon in listview using ActivityManager and PackageManager?

I'm trying to making a app that..
-shows currently running app icons in listview
-click item on listview that shows running app icons to switch
But i don't know how to do these, and i already googled a lot
but i found that i should use ActivityManager.RunningTaskinfo and Packagemanager to do these
Cloud you help me to do these?
How can i show running app icons in listview and give listview click event(such as OnItemClick)that switch to app which is clicked on listview?
[LeftSidePanel.java]
package kr.hybdms.sidepanel;
import java.util.ArrayList;
import java.util.List;
import kr.hybdms.sidepanel.PanelArrayAdapter;
import kr.hybdms.sidepanel.R;
import kr.hybdms.sidepanel.util.SystemUiHider;
import android.app.Activity;
import android.content.pm.PackageInfo;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;
/**
* An example full-screen activity that shows and hides the system UI (i.e.
* status bar and navigation/system bar) with user interaction.
*
* #see SystemUiHider
*/
public class LeftSidePanel extends Activity implements
OnItemClickListener {
ListView listView;
List<PanelItemDetail> rowItems;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_left_side_panel);
List<PackageInfo> packs = getPackageManager().getInstalledPackages(10);
Drawable[] images = new Drawable[packs.size()];
for(int i=0;i<packs.size();i++) {
PackageInfo p = packs.get(i);
images[i]= p.applicationInfo.loadIcon(getPackageManager());
}
rowItems = new ArrayList<PanelItemDetail>();
listView = (ListView) findViewById(R.id.panelcontents);
PanelArrayAdapter adapter = new PanelArrayAdapter(this,
R.layout.panelrow, rowItems);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Toast toast = Toast.makeText(getApplicationContext(),
"Item " + (position + 1) + ": " + rowItems.get(position),
Toast.LENGTH_SHORT);
toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
}
}
[PanelArrayAdapter.java]
package kr.hybdms.sidepanel;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
public class PanelArrayAdapter extends ArrayAdapter<PanelItemDetail> {
Context context;
public PanelArrayAdapter(Context context, int resourceId,
List<PanelItemDetail> items) {
super(context, resourceId, items);
this.context = context;
}
/*private view holder class*/
private class ViewHolder {
ImageView imageView;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
PanelItemDetail rowItem = getItem(position);
LayoutInflater mInflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.panelrow, null);
holder = new ViewHolder();
holder.imageView = (ImageView) convertView.findViewById(R.id.appicon);
convertView.setTag(holder);
} else
holder = (ViewHolder) convertView.getTag();
holder.imageView.setImageDrawable(rowItem.getImageId());
return convertView;
}
}
[PanelItemDetail.java]
package kr.hybdms.sidepanel;
import android.graphics.drawable.Drawable;
public class PanelItemDetail {
private Drawable imageId;
public PanelItemDetail(Drawable images) {
this.imageId = images;
}
public Drawable getImageId() {
return imageId;
}
public void setImageId(Drawable imageId) {
this.imageId = imageId;
}
}
[panelrow.xml]
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="#+id/appicon"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_margin="10dp" />
</RelativeLayout>
[activity_left_side_panel.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=".LeftSidePanel" >
<ImageView android:id="#+id/transparentbackground"
android:src="#drawable/detector"
android:adjustViewBounds="true"
android:gravity="center_vertical"
android:scaleType="fitXY"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_x="0dp"
android:layout_y="0dp"
android:layout_marginLeft="100dp"/>
<ImageView
android:id="#+id/panelbackground"
android:layout_width="100dp"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:scaleType="fitXY"
android:src="#drawable/panelbg" />
<ListView
android:id="#+id/panelcontents"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignRight="#+id/panelbackground"
android:layout_centerVertical="true"
android:listSelector="#drawable/panel_item_bg"
android:divider="#000000" >
</ListView>
</RelativeLayout>

Try going through this tutorial it may help you
here!