我有这段代码:
package lijap.app.starcraft2counters;
import java.io.File;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;
public class Settings extends Activity implements OnItemSelectedListener {
Spinner answertime;
Spinner gametime;
Spinner missesallowed;
String[] answerseconds = { "Unlimited", "1 second", "2 seconds", "3 seconds",
"4 seconds", " 5 seconds" };
String[] gameminutes = { "Unlimited", "1 minute", "2 minutes", "3 minutes",
"4 minutes", " 5 minutes" };
String[] numberofmisses = { "Unlimited", "5", "10", "15",
"20", "25" };
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.settings);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(Settings.this,
android.R.layout.simple_spinner_item, gameminutes);
answertime = (Spinner) findViewById(R.id.s_answertime);
answertime.setAdapter(adapter);
answertime.setOnItemSelectedListener(this);
}
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}
我试图投入超过1个微调器而感到困惑。我是否共享阵列适配器,还是为每个适配器创建一个新适配器? onItemSelected怎么样?正如你从顶部的琴弦中看到的那样,我想要三个旋转器。我该怎么做?
我是Android新手,你可以说。感谢所有帮助 - Lijap
答案 0 :(得分:14)
如果适配器调整了相同的信息,您可以在不同的Spinner
之间共享适配器。显然,您的每个适配器都需要调整一组String
,因此您需要为每个ArrayAdapter
创建一个Spinner
。
单个OnItemSelectedListener
适用于3 Spinners
(只要您设置它们)。您可以在作为参数传递的getId()
上调用AdapterView<?>
,以了解哪个Spinner
引发了此事件。
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
switch(arg0.getId()){
case R.id.s_answertime:
break;
case ...
}
}
答案 1 :(得分:4)
检查一下
yearDropdown.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id)
{
selectedyear = parentView.getSelectedItemPosition();
drpyear = yearDropdown.getSelectedItem().toString();
//your code here
}
public void onNothingSelected(AdapterView<?> parentView)
{
selectedyear = 0;
//return;
}
});
monthDropdown.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id)
{
//your code here
}
public void onNothingSelected(AdapterView<?> parentView)
{
selectedmonth = 0;
//return;
}
});
dayDropdown.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id)
{
//your code here
}
public void onNothingSelected(AdapterView<?> parentView)
{
selectedday = 0;
}
});
您需要为每个微调器创建每个适配器。
adapterYear = new ArrayAdapter<CharSequence>(this,android.R.layout.simple_spinner_item);
yearDropdown.setAdapter(adapterYear);
adapterMonth = new ArrayAdapter<CharSequence>(this,android.R.layout.simple_spinner_item);
monthDropdown.setAdapter(adapterMonth);
adapterDays = new ArrayAdapter<CharSequence>(this,android.R.layout.simple_spinner_item);
dayDropdown.setAdapter(adapterDays);