Here are the output screen of the application where users are able to insert their data through a textbox by clicking ok button as shown in image below. After adding the items users are able to select the items via a checkbox and the selected item are only rendered back to list when the button appearing on screen is clicked.
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| Fig: Android List with checkbox |
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Fig:
| Get Selected Item Using Checkbox in Listview when Button is clicked |
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ListCheckboxExampleActivity.java
package com.rnd.action;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.util.SparseBooleanArray;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
public class ListCheckboxExampleActivity extends Activity {
/** Called when the activity is first created. */
ListView lv;
String[] outputStrArr;
ArrayAdapter<String> aa = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
lv = (ListView) findViewById(R.id.listView_user);
final EditText myEditText = (EditText) findViewById(R.id.myeditText);
final ArrayList<String> todoItems = new ArrayList<String>();
aa = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_multiple_choice,todoItems);
lv.setAdapter(aa);
myEditText.setOnKeyListener(new View.OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if(event.getAction()== KeyEvent.ACTION_DOWN)
{
if(keyCode == KeyEvent.KEYCODE_DPAD_CENTER)
{
todoItems.add(0,myEditText.getText().toString());
aa.notifyDataSetChanged();
myEditText.setText("");
return true;
}
}
return false;
}
});
Button btn_ok = (Button) findViewById(R.id.button_ok);
btn_ok.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
SparseBooleanArray checked = lv.getCheckedItemPositions();
ArrayList<String> selectedItems = new ArrayList<String>();
for (int i = 0; i < checked.size(); i++) {
// Item position in adapter
int position = checked.keyAt(i);
// Add sport if it is checked i.e.) == TRUE!
if (checked.valueAt(i))
selectedItems.add(aa.getItem(position));
}
outputStrArr = new String[selectedItems.size()];
aa.clear();
for (int i = 0; i < selectedItems.size(); i++) {
outputStrArr[i] = selectedItems.get(i);
Log.i("test data" + outputStrArr[i], null, null);
aa.add(selectedItems.get(i));
}
}
});
}
}
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" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<EditText
android:id="@+id/myeditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" >
<requestFocus />
</EditText>
<ListView
android:id="@+id/listView_user"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:choiceMode="multipleChoice"
>
</ListView>
<Button
android:id="@+id/button_ok"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.rnd.action"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".ListCheckboxExampleActivity"
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>
