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POSelecting all checkboxes of listview in android
 

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    <p>i am having custom arrayadapter for listview, which has 5 views inside including checkbox, here i want to implement the select all checkboxes of listview and deselect all checkboxes, i tried with <code>getchildat()</code> method in the <code>oncreate()</code>, <code>onresume()</code>, and <code>onpostcreate</code> also but does not made luck to me. i appreciate if you can tell me the solution.</p> <pre><code>@Override public void onPostCreate(Bundle savedInstanceState){ super.onPostCreate(savedInstanceState); Button selectall=(Button) findViewById(R.id.allselect); selectall.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { int count = listview.getCount(); System.out.println("the count is "+count); for (int i = 0; i &lt; listview.getLastVisiblePosition() - listview.getFirstVisiblePosition(); i++) { RelativeLayout itemLayout = (RelativeLayout)listview.getChildAt(i); CheckBox cb = (CheckBox)itemLayout.findViewById(R.id.chkbx); cb.setChecked(true); } } }); } </code></pre> <p>Arrayadapter class</p> <pre><code>@SuppressWarnings("unchecked") public MultipleLeadSyncAdapter(Context context, String[] values,String[] values1,List&lt;Model&gt; qrcode ,String[] values3,String[] values4,String[] values5) { super(context, R.layout.multipleselectlist, values1); this.context = context; this.values = values; this.values1 = values1; this.list=qrcode; this.values3=values3; this.values4=values4; this.eventid=values5; } @Override public View getView(int position, View convertView, ViewGroup parent) { LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); ViewHolder holder =null; if (convertView == null) { convertView = inflater.inflate(R.layout.multipleselectlist, parent, false); holder = new ViewHolder(); holder.textView1 = (TextView) convertView.findViewById(R.id.multileadfirst_name); holder.textView3 = (TextView) convertView .findViewById(R.id.multileadcompany_name); holder.rate=(RatingBar) convertView.findViewById(R.id.multileadlistrating); holder.chkbox = (CheckBox) convertView.findViewById(R.id.chkbx); holder.chkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { int getPosition = (Integer) buttonView.getTag(); list.get(getPosition).setSelected(buttonView.isChecked()); } }); convertView.setTag(holder); convertView.setTag(R.id.chkbx,holder.chkbox); convertView.setTag(R.id.multileadfirst_name,holder.textView1); convertView.setTag(R.id.multileadcompany_name,holder.textView3); convertView.setTag(R.id.multileadlistrating,holder.rate); }else { holder = (ViewHolder) convertView.getTag(); } holder = (ViewHolder) convertView.getTag(); holder.textView1.setText(values[position]); if(values3[position].equals(" ")||values3[position].equals("null")||values3[position].equals("")){ }else{ String[] temp=values3[position].split(" "); } holder.textView3.setText(values1[position]); holder.rate.setRating(Float.valueOf(values4[position]).floatValue()); String s = values[position]; String ss = values1[position]; System.out.println(s + ss ); holder.chkbox.setTag(position); //holder.textView3.setText(list.get(position).getName()); holder.chkbox.setChecked(list.get(position).isSelected()); String igurl=values[position]; System.out.println("the imagurl is "+igurl); return convertView; } class ViewHolder { String qrcode,Boothid; TextView textView1, textView2, textView3,textView4,textView5; RatingBar rate; ImageView imageView; CheckBox chkbox; public String getQrcode() { return qrcode; } public void setQrcode(String qrcode) { this.qrcode = qrcode; } public String getBoothID() { return Boothid; } public void setBoothID(String Boothid) { this.Boothid = Boothid; } } </code></pre> <p>}</p>
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