通过使用操作栏支持库，我试图将自定义视图与选项卡导航一起放入操作栏。但它并没有像预期的那样到来。
下面是代码。
public class TODOListHomeActivity extends BaseActivity {
private RelativeLayout topbarLayout;
private TextView titleTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
_activity = this;
// Notice that setContentView() is not used, because we use the root
// android.R.id.content as the container for each fragment
// setup action bar for tabs
actionBar = getSupportActionBar();
// disable the default title and icon display
actionBar.setDisplayShowHomeEnabled(false);
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setLogo(null);
View homeIcon = findViewById(android.R.id.home);
((View) homeIcon.getParent()).setVisibility(View.GONE);
// TODO: The below code may change as per new design
topbarLayout = (RelativeLayout)LayoutInflater.from(_activity).inflate(getResources().getLayout(R.layout.header_layout), null);
actionBar.setCustomView(topbarLayout);
titleTextView = (TextView)topbarLayout.findViewById(R.id.tv_messagecenter);
titleTextView.setText(getResources().getText(R.string.todolist));
// new design-end
actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
Tab tab = actionBar.newTab()
.setText(getResources().getString(R.string.tasks))
.setTabListener(new TabListener<TODOListFragment>(
this, getResources().getString(R.string.tasks), TODOListFragment.class));
actionBar.addTab(tab);
tab = actionBar.newTab()
.setText(getResources().getString(R.string.due_today))
.setTabListener(new TabListener<TODOListFragment>(
this, getResources().getString(R.string.due_today), TODOListFragment.class));
actionBar.addTab(tab);
tab = actionBar.newTab()
.setText(getResources().getString(R.string.completed))
.setTabListener(new TabListener<TODOListFragment>(
this, getResources().getString(R.string.completed), TODOListFragment.class));
actionBar.addTab(tab);
}
class TabListener<T extends Fragment> implements ActionBar.TabListener {
private Fragment mFragment;
private final Activity mActivity;
private final String mTag;
private final Class<T> mClass;
/** Constructor used each time a new tab is created.
* @param activity The host Activity, used to instantiate the fragment
* @param tag The identifier tag for the fragment
* @param clz The fragment's Class, used to instantiate the fragment
*/
public TabListener(Activity activity, String tag, Class<T> clz) {
mActivity = activity;
mTag = tag;
mClass = clz;
}
/* The following are each of the ActionBar.TabListener callbacks */
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// Check if the fragment is already initialized
if (mFragment == null) {
// If not, instantiate and add it to the activity
mFragment = Fragment.instantiate(mActivity, mClass.getName());
ft.add(android.R.id.content, mFragment, mTag);
} else {
// If it exists, simply attach it in order to show it
ft.attach(mFragment);
}
}
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
if (mFragment != null) {
// Detach the fragment, because another one is being attached
ft.detach(mFragment);
}
}
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// User selected the already selected tab. Usually do nothing.
}
}
header_layout.xml 是
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res/com.vl.infotrax"
style="?attr/actionButtonStyle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="fill_horizontal"
android:background="@drawable/topstrip" >
<ImageView
android:id="@+id/iv_crossicon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginLeft="@dimen/margin_small"
android:src="@drawable/crossicon" />
<com.vl.infotrax.components.CustomTextView
android:id="@+id/tv_messagecenter"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_marginLeft="@dimen/margin_small"
android:layout_toLeftOf="@+id/btn_brodcast_menu"
android:layout_toRightOf="@+id/iv_crossicon"
android:ellipsize="end"
android:gravity="center"
android:lines="1"
android:maxLines="1"
android:singleLine="true"
android:text="MESSAGE CENTER"
android:textColor="@android:color/white"
android:textSize="@dimen/textsize_titlebar"
custom:customFont="fonts/HELVETIC.TTF" />
<ImageView
android:id="@+id/btn_brodcast_menu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="@dimen/margin_small"
android:background="@drawable/broadcasticon" />
</RelativeLayout>
输出如下所示。
我需要标签栏应该位于自定义视图下方。我怎样才能做到这一点？