当我在我的片段中为微调器设置onCLick监听器时，我会关闭此力：
05-15 16:28:59.266 11419-11419/com.beerportfolio.beerportfoliopro W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41576d40)
05-15 16:28:59.356 11419-11419/com.beerportfolio.beerportfoliopro E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.beerportfolio.beerportfoliopro, PID: 11419
java.lang.RuntimeException: setOnItemClickListener cannot be used with a spinner.
at android.widget.Spinner.setOnItemClickListener(Spinner.java)
at com.beerportfolio.beerportfoliopro.BreweryPage2.onCreateView(BreweryPage2.java:57)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:938)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1097)
at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1895)
at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1514)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:958)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:446)
at android.os.Handler.handleCallback(Handler.java)
at android.os.Handler.dispatchMessage(Handler.java)
at android.os.Looper.loop(Looper.java)
at android.app.ActivityThread.main(ActivityThread.java)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
at dalvik.system.NativeStart.main(Native Method)
我的片段看起来像这样：
public class BreweryPage2 extends Fragment {
public BreweryPage2(){}
String breweryId = "";
SearchView searchView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.brewery_page, container, false);
setHasOptionsMenu(true);
//get user information
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
String userName = prefs.getString("userName", null);
final String userID = prefs.getString("userID", null);
//todo: get brewery id from shared preferences
final String breweryId = prefs.getString("breweryID", null);
//set spinner up
final Spinner visitedBrewery = (Spinner) rootView.findViewById(R.id.visitSpinner);
//set spinner onCLick
visitedBrewery.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
String choice = visitedBrewery.getSelectedItem().toString();
if (choice.equals("yes")){
//add to database
//construct url
String url = "myURL";
//async task to get beer taste tag percents
new AddBreweryVisit(getActivity() ).execute(url);
}
else{
//delete from database
String url = "myURL2";
//async task to get beer taste tag percents
new KillBreweryVisit(getActivity() ).execute(url);
}
}
});
//construct url
String url = "myURL3";
Log.d("visit" , url);
//async task to get beer taste tag percents
new GetBreweryDataJSON(getActivity() , visitedBrewery).execute(url);
return rootView;
}
}
第57行是这一行：
visitedBrewery.setOnItemClickListener(new AdapterView.OnItemClickListener()
答案 0 :(得分：0)
它可能只是更容易放......
visitedBrewery.setOnItemClickListener(this);
然后让BreweryPage2实现它。
可能有一种更简单的方法，但这是我倾向于做的，我还没有遇到任何问题
答案 1 :(得分：0)
您可以按照此示例操作。比如
文件：res / values / strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">MyAndroidApp</string>
<string name="country_prompt">Choose a country</string>
<string-array name="country_arrays">
<item>Malaysia</item>
<item>United States</item>
<item>Indonesia</item>
<item>France</item>
<item>Italy</item>
<item>Singapore</item>
<item>New Zealand</item>
<item>India</item>
</string-array>
</resources>
文件：res / layout / main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Spinner
android:id="@+id/spinner1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/country_arrays"
android:prompt="@string/country_prompt" />
<Spinner
android:id="@+id/spinner2"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/btnSubmit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Submit" />
</LinearLayout>
MyAndroidAppActivity.java。代码
public class MyAndroidAppActivity extends Activity {
private Spinner spinner1, spinner2;
private Button btnSubmit;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addItemsOnSpinner2();
addListenerOnButton();
addListenerOnSpinnerItemSelection();
}
// add items into spinner dynamically
public void addItemsOnSpinner2() {
spinner2 = (Spinner) findViewById(R.id.spinner2);
List<String> list = new ArrayList<String>();
list.add("list 1");
list.add("list 2");
list.add("list 3");
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, list);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(dataAdapter);
}
public void addListenerOnSpinnerItemSelection() {
spinner1 = (Spinner) findViewById(R.id.spinner1);
spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener());
}
// get the selected dropdown list value
public void addListenerOnButton() {
spinner1 = (Spinner) findViewById(R.id.spinner1);
spinner2 = (Spinner) findViewById(R.id.spinner2);
btnSubmit = (Button) findViewById(R.id.btnSubmit);
btnSubmit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MyAndroidAppActivity.this,
"OnClickListener : " +
"\nSpinner 1 : "+ String.valueOf(spinner1.getSelectedItem()) +
"\nSpinner 2 : "+ String.valueOf(spinner2.getSelectedItem()),
Toast.LENGTH_SHORT).show();
}
});
}
}
和File：CustomOnItemSelectedListener.java
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Toast;
public class CustomOnItemSelectedListener implements OnItemSelectedListener {
public void onItemSelected(AdapterView<?> parent, View view, int pos,long id) {
Toast.makeText(parent.getContext(),
"OnItemSelectedListener : " + parent.getItemAtPosition(pos).toString(),
Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}
[参考] [Android微调器（下拉列表）示例] 1
实际上变成了setOnItemSelectedListener而不是setOnItemClickListener。
祝你好运。
答案 2 :(得分：0)
spinner.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
return true;
}
});
如果返回True，则单击微调器时将不显示微调器的下拉项。