String str = countries.get（country）;
mSpinnerCountry.setSelection（的Integer.parseInt（STR））;
mSpinnerCountry有项目，但我想在微调器上设置一个特定项目以供更新。
答案 0 :(得分：1)
通过从微调器列表中获取项目索引来做到这一点。
spinner.setSelection(countries.indexOf(str));
完成示例：
public class SpinnerModel {
private String CompanyName="";
private String Image="";
private String Url="";
/*********** Set Methods ******************/
public void setCompanyName(String CompanyName)
{
this.CompanyName = CompanyName;
}
public void setImage(String Image)
{
this.Image = Image;
}
public void setUrl(String Url)
{
this.Url = Url;
}
/*********** Get Methods ****************/
public String getCompanyName()
{
return this.CompanyName;
}
public String getImage()
{
return this.Image;
}
public String getUrl()
{
return this.Url;
}
}
<强> activity_custom_spinner：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:paddingTop="20dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<Spinner
android:id="@+id/spinner"
android:drawSelectorOnTop="true"
android:prompt="@string/defaultText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<TextView
android:paddingTop="20dip"
android:paddingLeft="20dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/output"
/>
</LinearLayout>
完整代码：
public class CustomSpinner extends Activity {
/************** Intialize Variables *************/
public ArrayList<SpinnerModel> CustomListViewValuesArr = new ArrayList<SpinnerModel>();
TextView output = null;
CustomAdapter adapter;
CustomSpinner activity = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_custom_spinner);
activity = this;
Spinner SpinnerExample = (Spinner)findViewById(R.id.spinner);
output = (TextView)findViewById(R.id.output);
// Set data in arraylist
setListData();
// Resources passed to adapter to get image
Resources res = getResources();
// Create custom adapter object ( see below CustomAdapter.java )
adapter = new CustomAdapter(activity, R.layout.spinner_rows, CustomListViewValuesArr,res);
// Set adapter to spinner
SpinnerExample.setAdapter(adapter);
// Listener called when spinner item selected
SpinnerExample.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View v, int position, long id) {
// your code here
// Get selected row data to show on screen
String Company = ((TextView) v.findViewById(R.id.company)).getText().toString();
String CompanyUrl = ((TextView) v.findViewById(R.id.sub)).getText().toString();
String OutputMsg = "Selected Company : \n\n"+Company+"\n"+CompanyUrl;
output.setText(OutputMsg);
Toast.makeText(
getApplicationContext(),OutputMsg, Toast.LENGTH_LONG).show();
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
});
}
/****** Function to set data in ArrayList *************/
public void setListData()
{
// Now i have taken static values by loop.
// For further inhancement we can take data by webservice / json / xml;
for (int i = 0; i < 11; i++) {
final SpinnerModel sched = new SpinnerModel();
/******* Firstly take data in model object ******/
sched.setCompanyName("Company "+i);
sched.setImage("image"+i);
sched.setUrl("http:\\www."+i+".com");
/******** Take Model Object in ArrayList **********/
CustomListViewValuesArr.add(sched);
}
}
}
<强> CustomAdapter：
/***** Adapter class extends with ArrayAdapter ******/
public class CustomAdapter extends ArrayAdapter<String>{
private Activity activity;
private ArrayList data;
public Resources res;
SpinnerModel tempValues=null;
LayoutInflater inflater;
/************* CustomAdapter Constructor *****************/
public CustomAdapter(
CustomSpinner activitySpinner,
int textViewResourceId,
ArrayList objects,
Resources resLocal
)
{
super(activitySpinner, textViewResourceId, objects);
/********** Take passed values **********/
activity = activitySpinner;
data = objects;
res = resLocal;
/*********** Layout inflator to call external xml layout () **********************/
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public View getDropDownView(int position, View convertView,ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
// This funtion called for each row ( Called data.size() times )
public View getCustomView(int position, View convertView, ViewGroup parent) {
/********** Inflate spinner_rows.xml file for each row ( Defined below ) ************/
View row = inflater.inflate(R.layout.spinner_rows, parent, false);
/***** Get each Model object from Arraylist ********/
tempValues = null;
tempValues = (SpinnerModel) data.get(position);
TextView label = (TextView)row.findViewById(R.id.company);
TextView sub = (TextView)row.findViewById(R.id.sub);
ImageView companyLogo = (ImageView)row.findViewById(R.id.image);
if(position==0){
// Default selected Spinner item
label.setText("Please select company");
sub.setText("");
}
else
{
// Set values for spinner each row
label.setText(tempValues.getCompanyName());
sub.setText(tempValues.getUrl());
companyLogo.setImageResource(res.getIdentifier
("com.androidexample.customspinner:drawable/"
+ tempValues.getImage(),null,null));
}
return row;
}
}
<强> spinner_rows.XML：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="3dip"
>
<ImageView
android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:layout_toRightOf="@+id/image"
android:padding="3dip"
android:layout_marginTop="2dip"
android:textColor="@drawable/red"
android:textStyle="bold"
android:id="@+id/company"
android:layout_marginLeft="5dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:layout_toRightOf="@+id/image"
android:padding="2dip"
android:textColor="@drawable/darkgrey"
android:layout_marginLeft="5dip"
android:id="@+id/sub"
android:layout_below="@+id/company"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</RelativeLayout>