Happy new year !
I'm starting in Android and I'd like to display a Custom listview in a dialog but when I click on the button that generates the dialog my listView doesn't appear. Do you have an idea of the problem? I have checked that the list of items I am sending is complete.I don't have any error when I debug. Here are some bits of the code:
Function call by the button in StatActivity
private void rank(){
List<Runner> sortedList = db.getRunnersOrderedByRating(runnerList);
AlertDialog.Builder builder = new AlertDialog.Builder(StatActivity.this);
View view = getLayoutInflater().inflate(R.layout.dialog_rank, null);
ListView listView = (ListView) view.findViewById(R.id.listView_rank_participant);
RankAdapter adapter = new RankAdapter(this, sortedList);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(getApplicationContext(),
"Rang "+i, Toast.LENGTH_SHORT);
}
});
builder.setView(R.layout.dialog_rank);
AlertDialog d_rank = builder.create();
d_rank.show();
}
Custom Adapter
public class RankAdapter extends ArrayAdapter<Runner> {
private static class ViewHolder {
TextView name;
TextView rank;
}
public RankAdapter(Context context, List<Runner> p) {
super(context, R.layout.item_rank, p);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Get the data item for this position
Runner p = getItem(position);
// Check if an existing view is being reused, otherwise inflate the view
RankAdapter.ViewHolder viewHolder; // view lookup cache stored in tag
if (convertView == null) {
// If there's no view to re-use, inflate a brand new view for row
viewHolder = new RankAdapter.ViewHolder();
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(R.layout.item_rank, parent, false);
viewHolder.name = (TextView) convertView.findViewById(R.id.tv_np);
viewHolder.rank = (TextView) convertView.findViewById(R.id.tv_rank);
// Cache the viewHolder object inside the fresh view
convertView.setTag(viewHolder);
} else {
// View is being recycled, retrieve the viewHolder object from tag
viewHolder = (RankAdapter.ViewHolder) convertView.getTag();
}
// Populate the data from the data object via the viewHolder object
// into the template view.
viewHolder.name.setText(p.getLastName()+" "+p.getFirstName());
viewHolder.rank.setText(String.valueOf(position));
// Return the completed view to render on screen
return convertView;
}
}
Dialog xml
<?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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_marginStart="0dp"
android:orientation="vertical">
<TextView
android:id="@+id/textView1"
android:layout_width="458dp"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginTop="5dp"
android:layout_marginEnd="56dp"
android:text="Classement individuelle :"
android:textSize="40sp" />
<ListView
android:id="@+id/listView_rank_participant"
android:layout_width="1243dp"
android:layout_height="693dp"
android:layout_alignParentBottom="true"
android:layout_centerInParent="true"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="3dp" />
</LinearLayout>
</RelativeLayout>
Item xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_marginStart="34dp"
android:layout_marginTop="16dp"
android:text="Rang : "
android:textSize="40dp"
app:layout_constraintTop_toTopOf="parent"
tools:layout_editor_absoluteX="46dp" />
<TextView
android:id="@+id/tv_rank"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="167dp"
android:layout_marginTop="19dp"
android:text="TextView"
android:textSize="40dp"
app:layout_constraintTop_toTopOf="parent"
tools:layout_editor_absoluteX="181dp" />
<TextView
android:id="@+id/tv_np"
android:layout_width="621dp"
android:layout_height="52dp"
android:layout_alignParentEnd="true"
android:layout_marginTop="16dp"
android:layout_marginEnd="300dp"
android:text="Name"
android:textSize="40dp"
app:layout_constraintTop_toTopOf="parent"
tools:layout_editor_absoluteX="391dp" />
</RelativeLayout>
Thank you in advance for your answer!
Not sure whether you find the solution or not.
In your rank(), you are setting view in the builder at the end after you had done your business logic on listview.
Replace your code of rank() with:
private void rank(){
List<Runner> sortedList = db.getRunnersOrderedByRating(runnerList);
AlertDialog d_rank = new AlertDialog.Builder(StatActivity.this).create();
View view = getLayoutInflater().inflate(R.layout.dialog_rank, null);
d_rank.setView(view);
ListView listView = (ListView) view.findViewById(R.id.listView_rank_participant);
RankAdapter adapter = new RankAdapter(this, sortedList);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(getApplicationContext(),
"Rang "+i, Toast.LENGTH_SHORT);
}
});
d_rank.show();
}
Hope it will help and not too late!!