I need to customize spinner in Android.
I have my simple Adapter:
public class MonthsSpinnerAdapter extends BaseAdapter {
private Activity context;
private String [] itemList;
public MonthsSpinnerAdapter(Activity context,String [] monthArray) {
this.context=context;
this.itemList=monthArray;
}
#Override
public int getCount() {
return 0;
}
#Override
public Object getItem(int position) {
return itemList[position];
}
#Override
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View row = inflater.inflate(R.layout.spinner_item, parent,
false);
RobotoTextView make = (RobotoTextView) row.findViewById(R.id.spinner_title);
make.setText(itemList[position]);
Log.d("SpinnerA", "getView");
return row;
}
public View getDropDownView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View row = inflater.inflate(R.layout.spinner_dropdown_item, parent,
false);
RobotoTextView month = (RobotoTextView) row.findViewById(R.id.spinner_month);
month.setText(itemList[position]);
RobotoTextView year = (RobotoTextView) row.findViewById(R.id.spinner_year);
year.setText(context.getString(R.string.year));
Log.d("SpinnerA", "getDropDownView");
return row;
}
}
But when I added it to my spinner and run the up, I don't see anything in spinner.
MonthsSpinnerAdapter adapter = new MonthsSpinnerAdapter(GeneralActivity.this
, getResources().getStringArray(R.array.month_list));
spinner.setAdapter(adapter);
I think it will be work nice, but I dont know where I have mistake. This is example what I see, when run app:
And at this picture, what I need:
And this my xml files if you need:
<com.devspark.robototextview.widget.RobotoTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
app:typeface="roboto_medium"
android:padding="5dp"
android:textColor="#fff"
android:id="#+id/spinner_title"
android:text="month"
android:background="#color/primary_color"
xmlns:android="http://schemas.android.com/apk/res/android" />
And DropDown layout:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto" >
<com.devspark.robototextview.widget.RobotoTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:typeface="roboto_medium"
android:layout_marginTop="16dp"
android:layout_marginLeft="12dp"
android:id="#+id/spinner_month"
android:text="month"
android:textColor="#545454"
android:background="#fafafa" />
<com.devspark.robototextview.widget.RobotoTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:typeface="roboto_regular"
android:layout_marginTop="16dp"
android:layout_marginRight="12dp"
android:layout_alignParentRight="true"
android:text="year"
android:id="#+id/spinner_year"
/>
</RelativeLayout>
Help me please with my problem
Try to return itemList.length in getCount function of your adapter.
#Override
public int getCount() {
return itemList.length;
}
Related
Please, the listview with just 3 textview (there is no image) it was working very fine when it was taking the full screen in height and width.
and after i have been change it to take the half of screen in height, it became scrolling very slow.
layout for rows in listView
<?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="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="4dp"
android:layout_marginEnd="16dp"
android:layout_toStartOf="#id/timer_row">
<TextView
android:id="#+id/name_row"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:textSize="#dimen/main_title_size"
android:textColor="#color/white"
/>
<TextView
android:id="#+id/author_row"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="#dimen/main_timer_size"
android:textColor="#color/white"
android:layout_below="#id/name_row"
android:layout_marginTop="16dp"
android:layout_alignParentStart="true"/>
</RelativeLayout>
<TextView
android:id="#+id/timer_row"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="#dimen/main_timer_size"
android:layout_margin="16dp"
android:padding="8dp"
android:textAlignment="center"
android:textColor="#color/white"
android:gravity="center"
android:layout_centerVertical="true"
android:layout_alignParentEnd="true"/>
</RelativeLayout>
and the adapter with the viewholder
public class MusicAdapter extends BaseAdapter {
private ArrayList<Music> list;
private LayoutInflater layoutInflater;
MusicAdapter(Context context, ArrayList<Music> list) {
this.list = list;
layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return list.size();
}
#Override
public Object getItem(int position) {
return list.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if (convertView == null) {
convertView = layoutInflater.inflate(R.layout.music_row, parent, false);
viewHolder = new ViewHolder(convertView);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
Music music = (Music) getItem(position);
viewHolder.title.setText(music.getName());
viewHolder.author.setText(music.getAuthor());
viewHolder.timer.setText(music.getTimer());
return convertView;
}
static class ViewHolder{
TextView title,author,timer;
ViewHolder(View v)
{
this.title = v.findViewById(R.id.name_row);
this.author = v.findViewById(R.id.author_row);
this.timer = v.findViewById(R.id.timer_row);
}
}
}
You should try to use RecyclerView instead of ListView: https://developer.android.com/guide/topics/ui/layout/recyclerview
I don't understand what's going wrong, when clicking an item on the list nothing appends.
my environment is minsdk:21, maxsdk:27, java 8 (openjdk), android-studio 3.1.4, terminal android 6.0
note : using FragmentManager or SupportFragmentManager provides the same result.
the fragment list layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:descendantFocusability="blocksDescendants"
>
<ListView
android:id="#+id/list"
android:dividerHeight="1sp"
android:divider="#color/blue_serenity_transparent"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
List row layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<GridLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:useDefaultMargins="true"
android:background="#color/blue_serenity_transparent"
android:columnCount="3"
android:rowCount="2"
>
<ImageView
android:id="#+id/notif_type"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_column="0"
android:layout_row="0"
android:layout_gravity="center_vertical"
/>
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_column="1"
android:layout_row="0"
android:textSize="18dp"
android:textColor="#color/black"
/>
<TextView
android:id="#+id/date"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_row="1"
android:layout_column="1"
/>
</GridLayout>
</LinearLayout>
list setup
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
List<NotificationBean> data = new NotificationBean().list(getActivity().getBaseContext());
View v = inflater.inflate(R.layout.fragment_notifications, container, false);
list = (ListView) v.findViewById(R.id.list);
listAdapter = new Adapter(getActivity().getBaseContext(), data);
list.setAdapter(listAdapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.e(TAG, "row clicked");
}
});
return v;
}
List adapter
class NotificationsAdapter extends BaseAdapter {
private Context context;
private LayoutInflater inflater = null;
private List<NotificationBean> notifications;
public NotificationsAdapter(Context context, List<NotificationBean> notifications){
this.context = context;
this.notifications = notifications;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return notifications.size();
}
#Override
public Object getItem(int position) {
return notifications.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null)
v = inflater.inflate(R.layout.fragment_notifications_row, null);
NotificationBean n = notifications.get(position);
GridLayout layout = (GridLayout) v.findViewById(R.id.row_layout);
if (dark) layout.setBackgroundColor(getResources().getColor(R.color.blue_serenity_transparent));
else layout.setBackgroundColor(getResources().getColor(R.color.white));
dark = !dark;
ImageView notifType = (ImageView) v.findViewById(R.id.notif_type);
notifType.setImageResource(n.getIcon());
TextView title = (TextView) v.findViewById(R.id.title);
title.setText(n.getTitle());
TextView date = (TextView) v.findViewById(R.id.date);
date.setText(Constants.DTF.format(n.getDate()));
return v;
}
}
I have a problem with spinner it do not let me select one item. I tried a lot of things and that still not working.
The picture shows that the spinner is in blank when the activity load
When I clicked the arrow it shows the items
but when I choose one, nothing happends.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Activities.Inspeccion.DatosGeneralesActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/scrollView"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginTop="15dp"
>
<TextView
android:id="#+id/tvSubestacionTitulo"
android:layout_below="#+id/imgLogo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/strSubestacion"
android:textSize="18sp"
android:textColor="#color/colorPrimaryDark"
android:textStyle="bold"
/>
<TextView
android:id="#+id/tvSubestacionDato"
android:layout_below="#+id/tvSubestacionTitulo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="12sp"
android:text="Prueba"
/>
<Spinner
android:id="#+id/spinnerSubEstacion"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/tvSubestacionDato"
>
</Spinner>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
This is the Layout of the activity.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="#+id/tvNumeroOpcion"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:text="1"
android:textColor="#color/black"
android:textSize="14sp" />
<TextView
android:id="#+id/tvDescriptionOption"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="15dp"
android:layout_marginTop="5dp"
android:text="Guatemala"
android:textColor="#color/black"
android:textSize="14sp" />
</LinearLayout>
That is the custom layout for the spinner
Public class ComboAdapter extends BaseAdapter{
private List<Combo> combos;
private Activity activity;
private LayoutInflater inflater;
public ComboAdapter(List<Combo> combos, Activity activity) {
this.combos = combos;
this.inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return combos.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (convertView == null){
view = inflater.inflate(R.layout.combo_list_item, null);
TextView tvId = (TextView) view.findViewById(R.id.tvNumeroOpcion);
TextView tvDescripcion = (TextView) view.findViewById(R.id.tvDescriptionOption);
tvId.setText(combos.get(position).getId());
tvDescripcion.setText(combos.get(position).getDescripcion());
}
return view;
}
#Override
public View getDropDownView(int position, View convertView,
ViewGroup parent) {
return getView(position, convertView,parent);
}
}
That is my Adapter
And below is my activity.
public class DatosGeneralesActivity extends AppCompatActivity {
private TextView tvSubestacionDato;
private List<Combo> listaCombo;
private Spinner spinnerSubestacion;
private ArrayAdapter<Combo> adapterSubestacion;
String seleccion;
#Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_datos_generales);
//Inicializando textos
tvSubestacionDato = (TextView) findViewById(R.id.tvSubestacionDato);
//Inicializanco listas
listaCombo = new ArrayList<>();
//Inivializando spinners
spinnerSubestacion = (Spinner) findViewById(R.id.spinnerSubEstacion);
AppService service = API.getCombos().create(AppService.class);
Call<List<Combo>> subestacionCall = service.getSubestacion();
subestacionCall.enqueue(new Callback<List<Combo>>() {
#Override
public void onResponse(Call<List<Combo>> call, Response<List<Combo>> response) {
listaCombo.clear();
listaCombo.addAll(response.body());
}
#Override
public void onFailure(Call<List<Combo>> call, Throwable t) {
}
});
//final ComboAdapter adapter = new ComboAdapter(listaCombo, DatosGeneralesActivity.this);
final ArrayAdapter<Combo> adapter = new ArrayAdapter<Combo>(this, R.layout.support_simple_spinner_dropdown_item, listaCombo);
spinnerSubestacion.setAdapter(adapter);
spinnerSubestacion.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
adapter.notifyDataSetChanged();
Toast.makeText(DatosGeneralesActivity.this, ""+position, Toast.LENGTH_SHORT).show();
tvSubestacionDato.setText(listaCombo.get(position).getDescripcion());
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
Try this changes:
Call adapter like:
ComboAdapter adapter = new ComboAdapter(DatosGeneralesActivity.this,
R.layout.combo_list_item, R.id.tvDescriptionOption, listaCombo);
now in adapter class:
public ComboAdapter(Activity context,int resouceId, int textviewId, List<Combo> list){
super(context,resouceId,textviewId, list);
this.combos = list;
this.inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
Also inside your getView() method inflate layout like:
if (convertView == null){
view = inflater.inflate(R.layout.combo_list_item, parent , false);
I have a question, currently I am using CursorTreeAdapter however I want to change it to use any other data not just cursors, but to be honest im not sure how would I do that, I think implement some other adapter and then override needed methods? But could any one show me some way? I'm confused right now and don't know to what direction I should go.
Thanks for help.
Abstract classes you can extend: BaseAdapter ArrayAdapter.
You can see this example:
public class FeedAdapter extends BaseAdapter {
private ArrayList<FeedItem> items;
private LayoutInflater layoutInflater;
FeedAdapter(Context context, ArrayList<FeedItem> list, int bgColor){
items = list;
layoutInflater = LayoutInflater.from(context);
}
#Override
public int getCount() {
return items.size();
}
#Override
public FeedItem getItem(int index) {
return items.get(index);
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row;
if (null == convertView) {
row = layoutInflater.inflate(R.layout.romanblack_feed_item, null);
} else {
row = convertView;
}
TextView title = (TextView) row.findViewById(R.id.romanblack_rss_title);
TextView pubdate = (TextView) row.findViewById(R.id.romanblack_rss_pubdate);
String titleString = items.get(position).getTitle();
title.setText(titleString);
if(items.get(position).getTextColor() != Color.TRANSPARENT){
title.setTextColor(items.get(position).getTextColor());
}else{
title.setTextColor(Color.DKGRAY);
}
pubdate.setText(items.get(position).getPubdate());
return row;
}
}
and layout file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/romanblack_feed_item"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#FFF">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#drawable/romanblack_rss_bg_feed"
android:orientation="vertical">
<TextView
android:text="Title"
android:id="#+id/romanblack_rss_title"
android:textSize="14sp"
android:textColor="#222"
android:layout_margin="5dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:text="2011-01-01"
android:id="#+id/romanblack_rss_pubdate"
android:textSize="10sp"
android:textColor="#666"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
I need to override List of dropdown spinner items when Spinner id in dialog mode (android:spinnerMode="dialog"). I need this to define my own list divider.
I have found dropDownListViewStyle item in application Theme, which contains divider item. And it works, but only for android:spinnerMode="dropdown".
Can I have the same effect for "dialog" mode?
Try this:
<Spinner
android:id="#+id/spinnerAddToList"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="10dp"
android:theme="#style/ThemeOverlay.AppCompat.Light"
android:spinnerMode="dialog"/>
Dropdown layout spinner_item_line_drop.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingLeft="3dp"
android:paddingRight="3dp">
<TextView
android:id="#+id/text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:textSize="18sp" />
<LinearLayout
android:id="#+id/separator"
android:layout_height="1dp"
android:layout_width="match_parent"
android:background="#color/colorPrimary"
android:orientation="vertical"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"/>
</LinearLayout>
Main View layout: spinner_item_line_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="10dp"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:paddingTop="10dp">
<TextView
android:id="#+id/text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:textSize="18sp" />
</LinearLayout>
SpinnerAdapter:
public class SpinnerLineAdapter extends BaseAdapter {
private List<MyListEntity> values;
public SpinnerLineAdapter(List<MyListEntity> values)
{
this.values = values;
}
public void setValue(List<MyListEntity> list)
{
this.values = list;
}
#Override
public int getCount() {
return values.size();
}
#Override
public MyListEntity getItem(int position) {
return values.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View itemView = convertView;
ViewHolder viewHolder;
Context context = parent.getContext();
if (convertView == null) {
itemView = LayoutInflater.from(context).inflate(R.layout.spinner_item_line_main, parent, false);
viewHolder = new ViewHolder();
viewHolder.textView = itemView.findViewById(R.id.text_view);
itemView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) itemView.getTag();
}
viewHolder.textView.setText(values.get(position).getName());
return itemView;
}
public View getDropDownView(int position, View convertView,ViewGroup parent) {
View itemView = convertView;
ViewHolder viewHolder;
Context context = parent.getContext();
if (convertView == null) {
itemView = LayoutInflater.from(context).inflate(R.layout.spinner_item_line_drop, parent, false);
viewHolder = new ViewHolder();
viewHolder.textView = itemView.findViewById(R.id.text_view);
itemView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) itemView.getTag();
}
viewHolder.textView.setText(values.get(position).getName());
return itemView;
}
private static class ViewHolder {
TextView textView;
}
}
Activity:
SpinnerLineAdapter spinnerAddToListAdapter = new SpinnerLineAdapter(list);
spinnerAddToList.setAdapter(spinnerAddToListAdapter);
spinnerAddToList.setSelection(0, false);
spinnerAddToList.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapterView, View view,
int position, long id) {
MyListEntity list = spinnerAddToListAdapter.getItem(position);
viewModel.addList(list.id);
viewModel.update(myEntity);
}
#Override
public void onNothingSelected(AdapterView<?> adapter) {
}
});
Button click to show dialog:
mButtonAdd.setOnClickListener(view -> {
spinnerAddToList.performClick();
});