我一直在尝试在列表视图中的无线电组内添加单选按钮。因此,如果我单击一个单选按钮它会检查它,但如果我单击另一个,它不会删除以前的选择。我是android的初学者,请原谅我如果我做的事情非常糟糕。
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="20dp">
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/car_list_radio_group">
<ListView
android:id="@+id/vehicle_list"
android:clickable="true"
android:layout_width="fill_parent"
android:layout_height="wrap_content"></ListView>
</RadioGroup>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alwaysDrawnWithCache="true"
android:backgroundTint="#ffffff">
<RadioButton
android:id="@+id/car_selected"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:buttonTint="@color/tesla_red"
android:padding="10dp"
android:text=""
android:textColor="@android:color/white"
android:textSize="16sp"
android:textStyle="bold" />
<TextView
android:id="@+id/vin"
android:layout_width="183dp"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_below="@+id/car_selected"
android:layout_marginStart="30dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textColor="@android:color/white"
android:textSize="12sp" />
</RelativeLayout>
private final class VehiclesAdapter extends BaseAdapter {
LayoutInflater inflter;
ArrayList<VehicleItem> vehiclesArray;
public VehiclesAdapter(Context applicationContext, ArrayList<VehicleItem> items) {
vehiclesArray = items;
inflter = (LayoutInflater.from(applicationContext));
}
@Override
public int getCount() {
return vehiclesArray.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return Long.parseLong(vehiclesArray.get(position).getId());
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
VehicleHolder holder;
VehicleItem vehicleItem = vehiclesArray.get(position);
if (convertView == null) { // if convertView is null
convertView = inflter.inflate(R.layout.vehicle_item, parent, false);
holder = new VehicleHolder();
holder.name = convertView.findViewById(R.id.car_selected);
holder.vin = convertView.findViewById(R.id.vin);
// initialize views
convertView.setTag(holder); // set tag on view
} else {
holder = (VehicleHolder) convertView.getTag();
// if not null get tag
// no need to initialize
}
if(vehicleItem.getId().equals(currentVehicle)){
holder.name.setChecked(true);
}
holder.name.setText(vehicleItem.getName());
holder.vin.setText(vehicleItem.getVin());
//update views here
return convertView;
}
}
如果您需要查看其他内容,请告诉我们。
RadioGroup
是一个LinearLayout
,意味着有RadioButton
儿童,以正确处理检查/取消检查。您必须放弃它并自行从适配器处理检查/取消选中逻辑。
在list_item.xml中添加它你将在每一行中获得radioGroup并从main_activity.xml中删除RadioGroup
希望对你有帮助...
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alwaysDrawnWithCache="true"
android:backgroundTint="#ffffff">
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/car_list_radio_group">
<RadioButton
android:id="@+id/car_selected"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:buttonTint="@color/tesla_red"
android:padding="10dp"
android:text=""
android:textColor="@android:color/white"
android:textSize="16sp"
android:textStyle="bold" />
<RadioButton
android:id="@+id/car_not_selected"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:layout_torightof="@+id/car_selected"
android:buttonTint="@color/tesla_red"
android:padding="10dp"
android:text=""
android:textColor="@android:color/white"
android:textSize="16sp"
android:textStyle="bold"
</RadioGroup>
<TextView
android:id="@+id/vin"
android:layout_width="183dp"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_below="@+id/car_selected"
android:layout_marginStart="30dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textColor="@android:color/white"
android:textSize="12sp" />
</RelativeLayout>