[英]Android : How to get the Id of selected item from Spinner
In my case I want to get the Id of selected item from Spinner.就我而言,我想从 Spinner 获取所选项目的 ID。 I have two fields in my modal class which are id and name.
我的模态类中有两个字段,它们是 id 和 name。 I'am listing all the data and am setting to this list to the adapter.
我列出了所有数据,并将此列表设置为适配器。 I have tried to get the selectedItem Id by using the getSelectedItem() method.
我尝试使用 getSelectedItem() 方法获取 selectedItem Id。 But i can only get the first id of the list of item.
但我只能得到项目列表的第一个 id。
This is my code.这是我的代码。
public class ModifyEventFragment extends DialogFragment{
Context context;
CalEvent eve;
Project proj;
Spinner eventType,stage;
public static String eid,pid,type;
public static List<EventType> event_type;
public static List<ProjectStatus> cust_stage;
EditText where,when,who,notes;
String eve_type,stage_val,when_val,who_val,notes_val;
String modified_where,modified_who,modified_when,modified_notes;
public ModifyEventFragment(Project proj)
{
this.proj=proj;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.modify_project_event, container,
false);
context = rootView.getContext();
eventType = (Spinner) rootView.findViewById(R.id.modifyEventType);
stage =(Spinner) rootView.findViewById(R.id.modifyStage);
where = (EditText)rootView.findViewById(R.id.modifyWhere);
who = (EditText)rootView.findViewById(R.id.modifyWho);
when = (EditText)rootView.findViewById(R.id.modifyWhen);
notes =(EditText) rootView.findViewById(R.id.modifyNotes);
eve = CalEvent.getCalEvent(ProjectEventFragment.calevent.eve_id);
event_type = EventType.listAll();
CustomEventTypeAdapter adapter = new CustomEventTypeAdapter(context, event_type);
eventType.setAdapter(adapter);
type=((EventType)eventType.getSelectedItem()).et_id;
cust_stage = ProjectStatus.listAll();
CustomStatusAdapter adapter1 = new CustomStatusAdapter(context, cust_stage);
stage.setAdapter(adapter1);
where.setText(eve.followup_location.toString());
where.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
modified_where = s.toString();
}
});
who.setText(eve.person_met.toString());
who.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
modified_who = s.toString();
}
});
when.setText(eve.event_start.toString());
when.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
modified_when = s.toString();
}
});
notes.setText(eve.notes.toString());
notes.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
modified_notes = s.toString();
}
});
Button save = (Button) rootView.findViewById(R.id.modifyeventsave);
save.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
eve.followup_location = modified_where;
eve.event_start = modified_when;
eve.person_met = modified_who;
eve.notes = modified_notes;
System.out.println("print type"+type);
eve.save();
ProjectEventFragment.adapter.notifyDataSetChanged();
}
});
return rootView;
}
This is CustomEventType adapter code.这是 CustomEventType 适配器代码。
public class CustomEventTypeAdapter extends BaseAdapter{
Context ctx;
List<EventType> ps;
LayoutInflater inflater;
public CustomEventTypeAdapter(Context ctx,List<EventType> ps)
{
this.ctx=ctx;
this.ps=ps;
inflater = (LayoutInflater) ctx
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return ps.size();
}
@Override
public EventType getItem(int position) {
// TODO Auto-generated method stub
return ps.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return ps.get(position).getId();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View rowView = convertView;
if (convertView == null)
rowView = inflater.inflate(R.layout.spinner_item_local, parent,
false);
TextView textView = (TextView) rowView.findViewById(R.id.spinner_item_text);
EventType proj = getItem(position);
try {
textView.setText(proj.name);
} catch (Exception e) {
}
return rowView;
}
Can someone help me to solve this problem?有人可以帮我解决这个问题吗?
Get selected item data from adapter list holder using position :使用 position 从适配器列表持有者获取所选项目数据:
eventType.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String id = event_type.get(position).getId();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
Sharing the sample code from my class to get the selected item id -共享我班级的示例代码以获取所选项目 ID -
spinner1 .setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// TODO Auto-generated method stub
spinner1 = parent.getItemAtPosition(position).toString();
count = position; //this would give you the id of the selected item
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
Cheers :)干杯:)
在您的微调器上使用 view.OnItemSelectedListener,您将在 int 中获得一个位置,您可以将其用作所选项目的 id
You have a ProjectStatus
bean.您有一个
ProjectStatus
bean。 Now Override
method String toString()
in it.现在在其中
Override
方法String toString()
。
public class ProjectStatus {
private Integer id; // Long, String any type
private String name;
// more properties if you need
@Override // Mandatory
public String toString() {
return name; // name + " ("+id+")"; // can also be returned
}
// Getter & Setter
}
Then make ArrayAdapter<ProjectStatus>
and set it in Spinner
to load Spinner with status options.然后创建
ArrayAdapter<ProjectStatus>
并将其设置在Spinner
以加载带有状态选项的 Spinner。
//Task 1.
List<ProjectStatus> cust_stages = ProjectStatus.listAll(); // Or using any JSON Data OR API call;
//Task 2.
ArrayAdapter<ProjectStatus> statusAdapter = new ArrayAdapter<ProjectStatus>(
this, android.R.layout.simple_spinner_item, cust_stages
);
statusAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
//Task 3.
Spinner stage =(Spinner) rootView.findViewById(R.id.modifyStage);
stage.setAdapter(statusAdapter);
Now get selected ProjectStatus
and it's Properties in any Click/Change Event
like below..现在在任何
Click/Change Event
选择ProjectStatus
和它的属性,如下所示..
// In any OnClick / OnSelect event
ProjectStatus selectedStatus = (ProjectStatus) stage.getSelectedItem();
Integer statusId = selectedStatus.getId();
String statusName = selectedStatus.getName();
// and if you have more properties
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