我创建了一个包含两个选项卡的活动。这些选项卡之一是地图(Google Maps API v2)。
没有 Activty 的布局(没有调用 setContent()),因为活动屏幕动态填充了 Fragment,具体取决于所选的选项卡。
现在,我需要在地图底部添加一个 TextView。
我想我可以扩展MapFragment
然后处理该onCreateView
方法,以便返回包含 Map 和 TextView 的不同视图。我不知道我该怎么做。有什么建议吗?
编辑:
actionbar.addTab(actionbar.newTab()
.setText("LIST")
.setTabListener(new TabListener<ListFragment>(
this, "list", ListFragment.class)));
Log.i("TabListener","chiamata TABLISTENER 2");
actionbar.addTab(actionbar.newTab()
.setText("MAP")
.setTabListener(new TabListener<CustomMapFragment>(
this, "map", CustomMapFragment.class)));
TabListener 类:
public class TabListener<T extends Fragment> implements ActionBar.TabListener {
private final Activity mActivity;
private final String mTag;
private final Class<T> mClass;
private final Bundle mArgs;
private Fragment mFragment;
public TabListener(Activity activity, String tag, Class<T> clz) {
this(activity, tag, clz, null);
}
public TabListener(Activity activity, String tag, Class<T> clz, Bundle args) {
mActivity = activity;
mTag = tag;
mClass = clz;
mArgs = args;
mFragment = mActivity.getFragmentManager().findFragmentByTag(mTag);
if (mFragment != null && !mFragment.isDetached()) {
FragmentTransaction ft = mActivity.getFragmentManager().beginTransaction();
ft.detach(mFragment);
ft.commit();
}
}
public void onTabSelected(Tab tab, FragmentTransaction ft) {
if (mFragment == null) {
mFragment = Fragment.instantiate(mActivity, mClass.getName(), mArgs);
ft.add(android.R.id.content, mFragment, mTag);
} else {
ft.attach(mFragment);
}
}
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
if (mFragment != null) {
ft.detach(mFragment);
}
}
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
}