Camo Camo - 1 month ago 24
Android Question

Custom ListView with RadioButton single choice

I hope that some of you can help me with this:

I got a custom listview with
2 textviews and 1 radio button.

I want to make it as a single choice, but everytime I
click on a item on the listview, it doesn't remove the
"check" from the other radio button.


My xml code:

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" >

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >

<TextView
android:id="@+id/tvMaterialName"
android:layout_width="250dp"
android:layout_height="fill_parent"
android:padding="5dp"
android:text="MaterialName"
android:textSize="35px" />

<TextView
android:id="@+id/tvMaterialNo"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp"
android:text="MaterialNo"
android:textSize="1px"
android:visibility="invisible" />
</LinearLayout>

<RadioButton
android:id="@+id/rdBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="false"
android:checked="false" />
</LinearLayout


And my onItemClickListener:

searchList.setOnItemClickListener(new OnItemClickListener() {

@Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {

LinearLayout item_view = (LinearLayout) v;
RadioButton itemcheck = (RadioButton) item_view
.findViewById(R.id.rdBtn);

itemcheck.setChecked(true);
if (itemcheck.isChecked()) {
itemcheck.setChecked(true);
} else {
itemcheck.setChecked(false);
}
}

});


My getView() in my adapter

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder viewHolder;
final Materials materialItem = getItem(position);
parent.setClickable(true);

LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {

convertView = inflater.inflate(R.layout.d, null, false);
viewHolder = new ViewHolder();
viewHolder.tvMaterialName = (TextView) convertView
.findViewById(R.id.tvMaterialName);
viewHolder.tvMaterialNo = (TextView) convertView
.findViewById(R.id.tvMaterialNo);

convertView.setTag(viewHolder);

} else {
viewHolder = (ViewHolder) convertView.getTag();

}

viewHolder.tvMaterialName.setText(materialItem.getMaterialName());
viewHolder.tvMaterialNo.setText(materialItem.getMaterialNo());

return convertView;


Thanks for the help

Answer

Try like this :

public class CheckedLinearLayout extends RelativeLayout implements
    Checkable {

private boolean isChecked;
private List<Checkable> checkableViews;

public CheckedLinearLayout (Context context, AttributeSet attrs,
        int defStyle) {
    super(context, attrs, defStyle);
    initialise(attrs);
}

public CheckedLinearLayout (Context context, AttributeSet attrs) {
    super(context, attrs);
    initialise(attrs);
}

public CheckedLinearLayout (Context context, int checkableId) {
    super(context);
    initialise(null);
}

public boolean isChecked() {
    return isChecked;
}

public void setChecked(boolean isChecked) {
    this.isChecked = isChecked;
    for (Checkable c : checkableViews) {
        c.setChecked(isChecked);
    }
}
public void toggle() {
    this.isChecked = !this.isChecked;
    for (Checkable c : checkableViews) {
        c.toggle();
    }
}

@Override
protected void onFinishInflate() {
    super.onFinishInflate();

    final int childCount = this.getChildCount();
    for (int i = 0; i < childCount; ++i) {
        findCheckableChildren(this.getChildAt(i));
    }
}

/**
 * Read the custom XML attributes
 */
private void initialise(AttributeSet attrs) {
    this.isChecked = false;
    this.checkableViews = new ArrayList<Checkable>(5);
}

/**
 * Add to our checkable list all the children of the view that implement the
 * interface Checkable
 */
private void findCheckableChildren(View v) {
    if (v instanceof Checkable) {
        this.checkableViews.add((Checkable) v);
    }

    if (v instanceof ViewGroup) {
        final ViewGroup vg = (ViewGroup) v;
        final int childCount = vg.getChildCount();
        for (int i = 0; i < childCount; ++i) {
            findCheckableChildren(vg.getChildAt(i));
        }
    }
}
}