Java Spinner 的 OnItemClickListener
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OnItemClickListener of spinner
提问by bShah
I am able to get Spinner in action bar this way; array of items in re/values/languages.xml
我可以通过这种方式在操作栏中获得 Spinner；re/values/languages.xml 中的项目数组
<string-array name="languages">
<item>Finnish</item>
<item>French</item>
<item>German</item>
<item>Slovakian</item>
<item>Polish</item>
</string-array>
In res/menu/main.xml
在 res/menu/main.xml
<item
android:id="@+id/menuSort"
android:actionLayout="@layout/spinner"
android:showAsAction="ifRoom"
android:title="@string/choose"/>
In res/layout/spinner.xml
在 res/layout/spinner.xml
<Spinner
android:id="@+id/spinner"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:entries="@array/languages"/>
And finally activity class;
最后是活动课；
public class Base_Activity extends Activity {
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
final Spinner spinner = new Spinner(this);
Log.i("DEBUG1", "CHECKPOINT1");
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(
this, android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(spinnerArrayAdapter);
Log.i("DEBUG2", "CHECKPOINT2");
spinnerArrayAdapter.setDropDownViewResource(0);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
String items=spinner.getSelectedItem().toString();
Log.i("Selected item : ",items);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
return true;
}
}
}
What I am not getting is on ItemSelected of spinner items nothing happens. As you can see from my xml file that I do not even need Adapter to get the spinner. But I am using adapter to so something to get OnItemSelected. Please help me what has happened here?
我没有得到的是 ItemSelected 的微调项目没有任何反应。从我的 xml 文件中可以看出，我什至不需要 Adapter 来获取微调器。但是我正在使用适配器来获取 OnItemSelected。请帮我看看这里发生了什么？
采纳答案by Biraj Zalavadia
try this may helps you
试试这可能对你有帮助
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
final Spinner spinner = (Spinner) menu.getItem(0).getActionView().findViewById(R.id.spinner);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
String items = spinner.getSelectedItem().toString();
Log.i("Selected item : ", items);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
return super.onCreateOptionsMenu(menu);
}
回答by Shashank Kadne
You have to add OnItemClickListenerand not OnItemSelectedListenerif you want the click event.
如果你想要点击事件，你必须添加OnItemClickListener而不是OnItemSelectedListener。
Your method will only work if you select your items or browse through the view using a trackball or up/down arrows. If you want click, then add OnItemClickListenerand override
您的方法仅在您选择项目或使用轨迹球或向上/向下箭头浏览视图时才有效。如果你想点击，然后添加OnItemClickListener和覆盖
public void onItemClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3)
