MultiSelection Mode Enabled In ListView By Adding Toggle Button Using Custom Layout In Android

MultiSelection Mode Enabled In ListView By Adding Toggle Button
                                    
                                   

1)Create a new android application project in eclipse 

2))Then after craeting a new project you have to edit the activity_mail.xml file , As shown below.

     

3)Create a layout file for customizing list view items in the file 

                              

                                                         

4) Now you have to code the main activity  file as shown below

                                                                      public class MainActivity extends Activity {

 

    String[] countries = new String[] {

        "India",

        "Pakistan",

        "Sri Lanka",

        "China",

        "Bangladesh",

        "Nepal",

        "Afghanistan",

        "North Korea",

        "South Korea",

        "Japan"

    };

 

    // Array of booleans to store toggle button status

    public boolean[] status = {

        true,

        false,

        false,

        false,

        false,

        false,

        false,

        false,

        false,

        false

    };

 

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

 

        /** Restore from the previous state if exists */

        if(savedInstanceState!=null){

            status = savedInstanceState.getBooleanArray("status");

        }

 

        ListView lvCountries = (ListView) findViewById(R.id.lv_countries);

 

        OnItemClickListener itemClickListener = new OnItemClickListener() {

            @Override

            public void onItemClick(AdapterView<?> lv, View item, int position, long id) {

 

                ListView lView = (ListView) lv;

 

                SimpleAdapter adapter = (SimpleAdapter) lView.getAdapter();

 

                HashMap<String,Object> hm = (HashMap) adapter.getItem(position);

 

                /** The clicked Item in the ListView */

                RelativeLayout rLayout = (RelativeLayout) item;

 

                /** Getting the toggle button corresponding to the clicked item */

                ToggleButton tgl = (ToggleButton) rLayout.getChildAt(1);

 

                String strStatus = "";

                if(tgl.isChecked()){

                    tgl.setChecked(false);

                    strStatus = "Off";

                    status[position]=false;

                }else{

                    tgl.setChecked(true);

                    strStatus = "On";

                    status[position]=true;

                }

                Toast.makeText(getBaseContext(), (String) hm.get("txt") + " : " + strStatus, Toast.LENGTH_SHORT).show();

            }

        };

 

        lvCountries.setOnItemClickListener(itemClickListener);

 

        // Each row in the list stores country name and its status

        List<HashMap<String,Object>> aList = new ArrayList<HashMap<String,Object>>();

 

        for(int i=0;i<10;i++){

            HashMap<String, Object> hm = new HashMap<String,Object>();

            hm.put("txt", countries[i]);

            hm.put("stat",status[i]);

            aList.add(hm);

        }

 

        // Keys used in Hashmap

        String[] from = {"txt","stat" };

 

        // Ids of views in listview_layout

        int[] to = { R.id.tv_item, R.id.tgl_status};

 

        // Instantiating an adapter to store each items

        // R.layout.listview_layout defines the layout of each item

        SimpleAdapter adapter = new SimpleAdapter(getBaseContext(), aList, R.layout.lv_layout, from, to);

 

        lvCountries.setAdapter(adapter);

    }

 

    /** Saving the current state of the activity

    * for configuration changes [ Portrait <=> Landscape ]

    */

    @Override

    protected void onSaveInstanceState(Bundle outState) {

        super.onSaveInstanceState(outState);

        outState.putBooleanArray("status", status);

    }

 

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.activity_main, menu);

        return true;

    }

}                             

5)Now the listview with toggle button  is ready             

                                                                         

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