无法解析构造函数'ArrayAdapter(AddChildActivity, int, void)'

Question

无法解析构造函数'ArrayAdapter(com.alburraq.mapschoolbus.activities.AddChildActivity， int， void('

我想在自动完成文本视图中显示数组列表

for (int i = 0; i < Constants.followArrayList.size(); i++) {
loadVehicles(Constants.followArrayList.get(i).getOwnerID());
ArrayAdapter<String> adapter = new ArrayAdapter<String>
(this, android.R.layout.simple_list_item_1, loadVehicles(Constants.followArrayList.get(i).getOwnerID()) );
mAutocompleteTextViewBus.setThreshold(1); //will start working from first character
mAutocompleteTextViewBus.setAdapter(adapter);
}
private void loadVehicles(final String ownerID) {
FirebaseDatabase.getInstance().getReference("vehicles").orderByChild("ownerId").equalTo(ownerID).addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) {
Vehicle vehicle = new Vehicle();
vehicle.setId("" + postSnapshot.getKey());
vehicle.setDriverName("" + postSnapshot.child("driverName").getValue());
vehicle.setDriverPhone("" + postSnapshot.child("driverPhone").getValue());
vehicle.setDriverPin("" + postSnapshot.child("driverPin").getValue());
vehicle.setImage("" + postSnapshot.child("image").getValue());
vehicle.setIsActive(Integer.parseInt("" + postSnapshot.child("isActive").getValue()));
vehicle.setLatitude("" + postSnapshot.child("latitude").getValue());
vehicle.setLongitude("" + postSnapshot.child("longitude").getValue());
vehicle.setNumber("" + postSnapshot.child("number").getValue());
vehicle.setOwnerId("" + postSnapshot.child("ownerId").getValue());
// if (vehicle.getIsActive() == 1) {
vehicles.add(vehicle);
//}
}
Constants.dismissSpinner();
}
@Override
public void onCancelled(DatabaseError error) {
Constants.dismissSpinner();
loadVehicles(ownerID);
}
});
Constants.dismissSpinner();
}

无法解析构造函数 'ArrayAdapter(com.alburraq.mapschoolbus.activities.AddChildActivity， int， void('

Answer 1

您的问题在于以下行：

ArrayAdapter<String> adapter = new ArrayAdapter<String>
(this, android.R.layout.simple_list_item_1, loadVehicles(Constants.followArrayList.get(i).getOwnerID()) );

ArrayAdapter拥有的唯一泛型构造函数是(来自文档(：

ArrayAdapter(Context context， int resource( 构造函数

ArrayAdapter(Context context， int resource， int textViewResourceId( 构造 函数

ArrayAdapter(Context context， int resource， T[] objects( 构造函数。

ArrayAdapter(Context context， int resource， int textViewResourceId， T[] 对象( 构造函数。

ArrayAdapter(上下文上下文、int 资源、列表对象( 构造 函数

ArrayAdapter(Context context， int resource， int textViewResourceId， 列出对象(构造函数

如果要从loadVehicles方法传入响应，则需要返回一个值。目前您有：private **void** loadVehicles(final String ownerID).

Answer 2

在ArrayAdapter中，构造函数ArrayAdapter(context, int, void)不存在。

您正在使用：

ArrayAdapter<String> adapter = new ArrayAdapter<String>
(this, android.R.layout.simple_list_item_1, loadVehicles(Constants.followArrayList.get(i).getOwnerID()) );

和loadVehicles(final String ownerID)返回void.

使用以下构造函数之一：

ArrayAdapter(Context context, int resource)
ArrayAdapter(Context context, int resource, int textViewResourceId)
ArrayAdapter(Context context, int resource, T[] objects)
ArrayAdapter(Context context, int resource, int textViewResourceId, T[] objects)
ArrayAdapter(Context context, int resource, List<T> objects)
ArrayAdapter(Context context, int resource, int textViewResourceId, List<T> objects)