我目前正在使用ActionBar(ActionBarCompat)项目,我需要对动作栏进行一些澄清。
我正在使用这样的微调器布局,
<Spinner
android:id="@+id/SpinnerList"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
我的代码,
public class MainActivity extends ActionBarActivity implements OnItemSelectedListener{
private boolean mAlternateTitle = false;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ActionBar bar = getActionBar();
bar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
Spinner spinner = (Spinner) findViewById(R.id.SpinnerList);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.locations, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(this);
}
}
它在我的android galaxy ace中显示正常的微调器。我需要输出如下, 是那个位置android 2.3。请提出建议。
感谢。
答案 0 :(得分:9)
试试这段代码。 在menu / main.xml中:
<item
android:id="@+id/menu_spinner1"
android:showAsAction="always"
android:orderInCategory="1"
android:actionViewClass="android.widget.Spinner" >
活动中的:
private MenuItem mSpinnerItem1 = null;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
MenuInflater mi=getMenuInflater();
mi.inflate(R.menu.main, menu);
mSpinnerItem1 = menu.findItem( R.id.menu_spinner1);
View view1 = mSpinnerItem1.getActionView();
if (view1 instanceof Spinner)
{
final Spinner spinner = (Spinner) view1;
spinner.setAdapter(ad1);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@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
}
});
}
return true;
}
答案 1 :(得分:4)
我觉得现在是时候开始通过ActionBarCompat库轻松地从ABS迁移到ABC了!
使用 ActionBarCompat 库
的微调器(下拉列表)解决方案private void setupSpinner(MenuItem item) {
// item.setVisible(getSupportActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_LIST);
item.setVisible(ab.getNavigationMode() == ActionBar.NAVIGATION_MODE_LIST);
View view = item.getActionView();
Context context = ab.getThemedContext(); //to get the declared theme
if (view instanceof Spinner) {
Spinner spinner = (Spinner) view;
ArrayAdapter<CharSequence> listAdapter =ArrayAdapter.createFromResource(context,
R.array.spinner_data,
R.layout.support_simple_spinner_dropdown_item);
listAdapter.setDropDownViewResource(R.layout.support_simple_spinner_dropdown_item);
spinner.setAdapter(listAdapter);
}
确保在style.xml中添加了以下内容:
<style name="AppBaseTheme" parent="@style/Theme.AppCompat.Light"></style>
<style name="AppTheme.MyActionBar" parent="@style/Widget.AppCompat.ActionBar">
更重要的是: menu / main.xml应该是:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:yourapp="http://schemas.android.com/apk/res-auto" >
<item
android:id="@+id/menu_spinner"
yourapp:actionViewClass="android.widget.Spinner"
android:visible="true"
yourapp:showAsAction="always"/>
<item
android:id="@+id/action_contact"
android:icon="@drawable/ic_action_user"
yourapp:showAsAction="ifRoom"
android:title="@string/action_contact"/>
<item
android:id="@+id/action_contact2"
android:icon="@drawable/ic_action_user"
yourapp:showAsAction="never"
android:title="@string/aboutus"/>
</menu>
我们之前使用的FYI ActionBarSherlock方式:
private void setupSpinner(MenuItem item) {
item.setVisible(getActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_LIST);
View view = item.getActionView();
if (view instanceof Spinner) {
Spinner spinner = (Spinner) view;
spinner.setAdapter(ArrayAdapter.createFromResource(this,
R.array.spinner_data,
android.R.layout.simple_spinner_dropdown_item));
}
与ABS ABC相比,您需要将listadapter设置为R.layout.support_simple_spinner_dropdown_item
答案 2 :(得分:3)
尝试更改
android.R.layout.simple_spinner_item
到
android.R.layout.simple_list_item_1
答案 3 :(得分:2)
我认为你正在使用ActionBarCompat,它只是一个示例项目,远远不够用。
尝试使用开源项目ActionBarSherlock。我已经在几个项目中使用它,它功能强大且易于使用。
答案 4 :(得分:0)
如果您要通过菜单的xml将微调框添加到操作栏
android:actionViewClass="android.widget.Spinner"
它会像其他菜单操作一样显示在右侧。
如果要使其显示在左侧,则可以执行另一种方法。
我正在一个片段中执行此操作(但是您可以通过活动来执行此操作),并使用Toolbar
,所以我的代码是:
activity_main.xml
(theme
和popupTheme
对于箭头颜色很重要):
...
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:subtitleTextColor="@android:color/white"
app:titleTextColor="@android:color/white" />
...
action_bar_spinner_title.xml
:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@android:id/text1"
style="?attr/spinnerDropDownItemStyle"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:ellipsize="marquee"
android:singleLine="true"
android:textColor="@android:color/white" />
action_bar_spinner_list.xml
:
<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@android:id/text1"
style="?android:attr/spinnerDropDownItemStyle"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/colorPrimary"
android:ellipsize="marquee"
android:singleLine="true"
android:textColor="@android:color/white" />
内部片段:
private static final String[] arItems = {"Item 1", "Item 2", "Item 3", };
private Toolbar toolbar;
private Spinner actionBarSpinner;
public ActionBarSpinnerFragment() {
}
@Nullable @Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_action_bar_spinner, container, false);
}
@Override
public void onStart() {
super.onStart();
final Activity activity = getActivity();
if(activity != null) {
ActionBar actionBar = ((AppCompatActivity) activity).getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayShowTitleEnabled(false);
toolbar = activity.findViewById(R.id.toolbar);
actionBarSpinner = new Spinner(actionBar.getThemedContext());
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<>(activity,
R.layout.action_bar_spinner_title, android.R.id.text1, arItems);
spinnerAdapter.setDropDownViewResource(R.layout.action_bar_spinner_list);
actionBarSpinner.setAdapter(spinnerAdapter);
actionBarSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
FragmentManager fragMngr = getFragmentManager();
if(fragMngr != null) {
FragmentTransaction fragTransact = fragMngr.beginTransaction();
fragTransact.replace(R.id.frag_frame,
TextViewFragment.newInstance(arItems[position]));
fragTransact.commit();
} else {
Log.w(LOG_TAG, "ActionBarSpinnerFragment: FragmentManager == null");
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
toolbar.addView(actionBarSpinner);
} else {
Log.w(LOG_TAG, "ActionBarSpinnerFragment.onStart: actionBar == null");
}
} else {
Log.w(LOG_TAG, "ActionBarSpinnerFragment.onStart: activity == null");
}
}
@Override
public void onStop() {
super.onStop();
if(toolbar != null && actionBarSpinner != null) {
toolbar.removeView(actionBarSpinner);
} else {
Log.w(LOG_TAG, "ActionBarSpinnerFragment: toolbar == " + toolbar
+ "; actionBarSpinner == " + actionBarSpinner);
}
}