This is alternate solution of Expandable ListView Android.
Your Main Activity Class:
package com.example.my_demo;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends Activity {
private Button btn1;
private Button btn2;
private ListView list1;
ArrayList<String> a = new ArrayList<String>();
public boolean LI1 = false;
public boolean LI2 = false;
public boolean LI3 = false;
private ArrayAdapter<String> listAdapter;
private ListView list2;
private Button btn3;
private ListView list3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
a.add(" Android");
a.add(" iPhone");
a.add(" Dhaval Sodha Parmar");
btn1 = (Button) findViewById(R.id.button1);
btn2 = (Button) findViewById(R.id.button2);
btn3 = (Button) findViewById(R.id.button3);
list1 = (ListView) findViewById(R.id.listView1);
list2 = (ListView) findViewById(R.id.listView2);
list3 = (ListView) findViewById(R.id.listView3);
// listAdapter = new ArrayAdapter<String>(this,
// android.R.layout.simple_list_item_1, a);
listAdapter = new ArrayAdapter<String>(this, R.layout.childrow, a);
list1.setAdapter(listAdapter);
btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (!LI1) {
list1.setAdapter(listAdapter);
Utility.setListViewChild(list1);
list1.setVisibility(ListView.VISIBLE);
LI1 = true;
} else {
list1.setVisibility(ListView.GONE);
LI1 = false;
}
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (!LI2) {
list2.setAdapter(listAdapter);
Utility.setListViewChild(list2);
list2.setVisibility(ListView.VISIBLE);
LI2 = true;
} else {
list2.setVisibility(ListView.GONE);
LI2 = false;
}
}
});
btn3.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (!LI3) {
list3.setAdapter(listAdapter);
Utility.setListViewChild(list3);
list3.setVisibility(ListView.VISIBLE);
LI3 = true;
} else {
list3.setVisibility(ListView.GONE);
LI3 = false;
}
}
});
list1.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this,
"You Select : " + a.get(arg2), Toast.LENGTH_LONG)
.show();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
public static class Utility {
public static void setListViewChild(ListView list) {
ListAdapter listadapter = list.getAdapter();
if (listadapter == null) {
return;
}
int totalHight = 0;
for (int i = 0; i < listadapter.getCount(); i++) {
View listitem = listadapter.getView(i, null, list);
listitem.measure(0, 0);
totalHight += listitem.getMeasuredHeight();
}
ViewGroup.LayoutParams params = list.getLayoutParams();
params.height = totalHight
+ (list.getDividerHeight() * (listadapter.getCount() - 1));
list.setLayoutParams(params);
}
}
}
Activity_main.xml
<?xml version="1.0" encoding="UTF-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fadeScrollbars="false" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="@+id/button1"
android:textSize="26dp"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#345ea8"
android:gravity="left|center"
android:text="list one" />
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone" >
</ListView>
<Button
android:id="@+id/button2"
android:textSize="26dp"
android:gravity="left|center"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#345ea8"
android:text="list two" />
<ListView
android:id="@+id/listView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone" >
</ListView>
<Button
android:id="@+id/button3"
android:textSize="26dp"
android:gravity="left|center"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#345ea8"
android:text="list three" />
<ListView
android:id="@+id/listView3"
android:layout_width="match_parent"
android:layout_height="40dp"
android:visibility="gone" >
</ListView>
<View
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</LinearLayout>
</ScrollView>
childrow.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#c7e8fa"
android:text="Medium Text"
android:gravity="left|center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#345ea8"
android:textSize="26dp" />
manifest file
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.my_demo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.my_demo.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Enjoy Coding......
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