我的片段中有一个工具栏,我需要设置活动的操作栏,但是,每当我调用getSupportActionBar()方法时,我都会为null,任何人都可以提供帮助吗?
我的活动:
class FinalViewController:UIViewController, UITabBarControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.tabBarController?.delegate = self
}
func tabBarController(_ tabBarController: UITabBarController,didSelect viewController: UIViewController) {
let tabBarIndex = tabBarController.selectedIndex
if tabBarIndex == 0 {
_ = self.navigationController?.popViewController(animated: true)
}else{
//whatever
}
}
}
Style.xml 该活动正在使用public class MainActivity1 extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity1);
Fragment fragment = new HomeFragment();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.main, fragment).commit();
}
}
主题
AppTheme.NoActionBar
片段代码:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />