Hi,
I think you are not making the ListAdapter correctly, I tried substituting
CheckBox for TextView for mDialogue in ApiDemos>Views>List4.java and it
gives a "checkboxifiedlist".
You may want to try that.
Thanks,
Megha
On Tue, Apr 15, 2008 at 11:01 PM, nithin <[EMAIL PROTECTED]> wrote:
>
> I am trying check box inside list, like iconified List, but Null
> pointer exception is coming, can anybody Tell me , where is the
> error...
>
> Here is the code,
>
>
> import android.app.ListActivity;
> import android.content.Context;
> import android.os.Bundle;
> import android.widget.CheckBox;
> import android.content.Context;
> import java.util.ArrayList;
> import java.util.List;
> import android.view.View;
> import android.view.ViewGroup;
> import android.widget.BaseAdapter;
> import android.widget.LinearLayout;
> import android.widget.TextView;
>
> public class CheckBoxifiedList extends ListActivity {
>
> @Override
> public void onCreate(Bundle icicle) {
> super.onCreate(icicle);
> Context mContext = this;
> CheckBox c1 = new CheckBox(mContext);
> CheckBox c2 = new CheckBox(mContext);
> CheckBox c3 = new CheckBox(mContext);
> CheckBox c4 = new CheckBox(mContext);
>
> CheckTextListAdapter btla = new CheckTextListAdapter(this);
> CheckText bt1 = new CheckText("Google", c1);
> CheckText bt2 = new CheckText("Mail", c2);
> CheckText bt3 = new CheckText("Explorer", c3);
> CheckText bt4 = new CheckText("Messenger", c4);
> btla.addItem(bt1);
> btla.addItem(bt2);
> btla.addItem(bt3);
> btla.addItem(bt4);
> setListAdapter(btla);
> }
>
> class CheckText extends Object {
>
> private String mText = "";
> Context mContext = this.mContext;
> CheckBox cBullet = new CheckBox(mContext);
> private boolean mSelectable = true;
>
> public CheckText(String text, CheckBox bullet) {
> cBullet = bullet;
> mText = text;
>
> }
>
> public boolean isSelectable() {
> return mSelectable;
> }
>
> public void setSelectable(boolean selectable) {
> mSelectable = selectable;
> }
>
> public String getText() {
> return mText;
> }
>
> public void setText(String text) {
> mText = text;
> }
>
> public void setBullet(CheckBox bullet) {
> cBullet = bullet;
> }
>
> public CheckBox getBullet() {
> return cBullet;
> }
> }
>
> class CheckTextListAdapter extends BaseAdapter {
>
> private Context mContext;
> private List<CheckText> mItems;
>
> public CheckTextListAdapter(Context context) {
> mContext = context;
> mItems = new ArrayList<CheckText>();
> }
>
> void addItem(CheckText bt) {
> mItems.add(bt);
>
> }
>
> void setListItems(List<CheckText> bti) {
> mItems = bti;
> }
>
> public int getCount() {
> return mItems.size();
> }
>
> public Object getItem(int position) {
> return mItems.get(position);
> }
>
> @Override
> public boolean areAllItemsSelectable() {
> return false;
> }
>
> @Override
> public boolean isSelectable(int position) {
> return mItems.get(position).isSelectable();
> }
>
> public long getItemId(int position) {
> return position;
> }
>
> public View getView(int position, View convertView, ViewGroup
> parent) {
> CheckTextView btv;
> if (convertView == null) {
> btv = new CheckTextView(mContext,
> mItems.get(position).getText(),
> mItems.get(position).getBullet());
> } else {
> btv = (CheckTextView) convertView;
> btv.setText(mItems.get(position).getText());
> btv.setBullet(mItems.get(position).getBullet());
> }
> return btv;
> }
> }
>
> class CheckTextView extends LinearLayout {
>
> private TextView mText;
> private CheckBox mBullet;
>
> public CheckTextView(Context context, String text, CheckBox
> bullet) {
> super(context);
> this.setOrientation(HORIZONTAL);
> mBullet = new CheckBox(context);
> mBullet = bullet;
> addView(mBullet, new LinearLayout.LayoutParams(
> LayoutParams.WRAP_CONTENT,
> LayoutParams.WRAP_CONTENT));
> mText = new TextView(context);
> mText.setText(text);
> addView(mText, new LinearLayout.LayoutParams(
> LayoutParams.WRAP_CONTENT,
> LayoutParams.WRAP_CONTENT));
> }
>
> public void setText(String words) {
> mText.setText(words);
> }
>
> public void setBullet(CheckBox c) {
> mBullet = c;
> }
> }
> }
>
>
> Thanks
> Nithin
> >
>
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