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POAdding checked items in a custom list view to array list in android
 

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  1. POAdding checked items in a custom list view to array list in android
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    <p>Hi i am writing a program using custom listview with checkbox. My intention is to start a new activity when clicking a button (<strong>Add</strong>) and the new activity displays the selected values from the listview.I am getting error when i try to add the values</p> <p>the error occuring line is</p> <blockquote> <p>selectedItems.add(adapter.getItem(position));</p> </blockquote> <p>if i comment this line then i can check the box but it shows eror when i click <strong>"Add"</strong> button.</p> <p>here is my complete code.</p> <p>My mainactivity</p> <p><strong>HomePage.java</strong></p> <pre><code>public class HomePage extends Activity { private ListView listView1; ListAdapter adapter; Button btn; SparseBooleanArray checkedValue; ArrayList&lt;List&gt; selectedItems; String name; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_home_page); List device_data[] = new List[] { new List(R.drawable.ic_pic , "Actvity1"), new List(R.drawable.ic_pic, "Actvity2"), new List(R.drawable.ic_pic, "Actvity3"), new List(R.drawable.ic_pic, "Actvity4"), new List(R.drawable.ic_pic, "Actvity5") }; ListAdapter adapter = new ListAdapter(this, R.layout.list_viewrow, device_data); listView1 = (ListView)findViewById(R.id.listView1); View header = (View)getLayoutInflater().inflate(R.layout.listview_header, null); listView1.addHeaderView(header); listView1.setAdapter(adapter); Log.i("check box status", ""+ListAdapter.ListHolder.class); btn= (Button)findViewById(R.id.add); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String[] outputStrArr = new String[selectedItems.size()]; checkedValue= listView1.getCheckedItemPositions(); for (int i = 0; i &lt; selectedItems.size(); i++) { outputStrArr[i] = selectedItems.get(i).toString(); } Intent intent = new Intent(getApplicationContext(), CheckedValues.class); Bundle b = new Bundle(); b.putStringArray("selectedItems", outputStrArr); // Add the bundle to the intent. intent.putExtras(b); startActivity(intent); } }); } private class ListAdapter extends ArrayAdapter&lt;List&gt; { Context context; int layoutResourceId; boolean checkvalue; List data[] = null; public ListAdapter(Context context, int layoutResourceId, List[] data) { super(context, layoutResourceId, data); this.layoutResourceId = layoutResourceId; this.context = context; this.data = data; } @Override public View getView(final int position, View convertView, ViewGroup parent) { View row = convertView; final ListHolder holder; if(row == null) { LayoutInflater inflater = ((Activity)context).getLayoutInflater(); row = inflater.inflate(layoutResourceId, parent, false); holder = new ListHolder(); holder.imgIcon = (ImageView)row.findViewById(R.id.imgIcon); holder.txtTitle = (TextView)row.findViewById(R.id.txtTitle); holder.checkbox=(CheckBox) row.findViewById(R.id.check); holder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { selectedItems.add(adapter.getItem(position)); } }); row.setTag(holder); } else { holder = (ListHolder)row.getTag(); } List list = data[position]; holder.txtTitle.setText(list.title); holder.imgIcon.setImageResource(list.icon); return row; } class ListHolder { ImageView imgIcon; TextView txtTitle; CheckBox checkbox; } } } </code></pre> <p>and my second activity</p> <p><strong>CheckedValues.java</strong></p> <pre><code>public class CheckedValues extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_checked_values); Bundle b = getIntent().getExtras(); String[] resultArr = b.getStringArray("selectedItems"); ListView lv = (ListView) findViewById(R.id.outputList); ArrayAdapter&lt;String&gt; adapter = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, resultArr); lv.setAdapter(adapter); } </code></pre> <p>}</p> <p>thanks in advance..</p>
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    1. USuser2083175
    1. USuser2083175
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    1. COhttp://stackoverflow.com/questions/18180349/list-view-custom-adapter-randomly-checking-values/18180538#18180538. check this if it helps.
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      1. POAdding checked items in a custom list view to array list in android
      1. USRaghunandan
 

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