我正在开发一个应用程序,在我的MainActivity中,我使用导航抽屉来切换框架布局上的碎片。
其中一个片段是帮助'片段,我使用Tab布局和viewpager在三个页面之间滑动,关于我们','帮助'& '与我们联系'
下面的棒棒糖设备上一切正常。操作栏似乎坚持使用标签布局(使用工具栏作为操作栏)。
但是在Lollipop设备上,它显示为与操作栏和tablayout分开。
如何在棒棒糖设备上实现相同目的?
MainActivity:
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
NavigationView navigationView;
ActionBarDrawerToggle toggle;
DrawerLayout drawer;
FragmentManager fm = getSupportFragmentManager();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Title");
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
@Override
public boolean onNavigationItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.nav_help) {
getSupportActionBar().setTitle("Help");
fm.beginTransaction().replace(R.id.l_frame_layout, new Help(),"help").commit();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;}
Help.java
public class Help extends Fragment {
ViewPager pager;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.layout_help, container, false);
return(rootView);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final TabLayout tabLayout = (TabLayout)getActivity(). findViewById(R.id.tllayout_helpTABLAYOUTtl);
tabLayout.addTab(tabLayout.newTab().setText("ABOUT"));
tabLayout.addTab(tabLayout.newTab().setText("HELP"));
tabLayout.addTab(tabLayout.newTab().setText("CONTACT"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
actionBar = getActivity().getActionBar();
pager = (ViewPager)getActivity().findViewById(R.id.vplayout_helpVIEVPAGERvp);
pager.setAdapter(new MyPagerAdapter(getFragmentManager()));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
pager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
}
class MyPagerAdapter extends FragmentStatePagerAdapter {
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int pos) {
switch(pos) {
case 0: AboutUs tab1 = new AboutUs();
return tab1;
case 1: HelpRecharge tab2 = new HelpRecharge();
return tab2;
case 2: ContactUs tab3 = new ContactUs();
return tab3;
default: return null;
}
}
@Override
public int getCount() {
return 3;
}
}}
答案 0 :(得分:2)
好像你的风格xml中的操作栏设置了高程。
对于Android 5.0+,如果您要将操作栏样式设置如下:
<item name="android:elevation">0dp</item>
并且对于支持库兼容性,请使用:
<item name="elevation">0dp</item>
AppCompat灯光主题的样式示例:
<style name="Theme.MyApp.ActionBar" parent="style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
<!-- remove shadow below action bar -->
<!-- <item name="android:elevation">0dp</item> -->
<!-- Support library compatibility -->
<item name="elevation">0dp</item>
</style>
然后将此自定义ActionBar样式应用于应用主题:
<style name="Theme.MyApp" parent="Theme.AppCompat.Light">
<item name="actionBarStyle">@style/Theme.MyApp.ActionBar</item>
</style>
对于5.0之前的Android,也可以将其添加到您的应用主题:
<!-- Remove shadow below action bar Android < 5.0 -->
<item name="android:windowContentOverlay">@null</item>
答案 1 :(得分:1)
尝试通过添加以下代码动态设置工具栏的高程:
appBarLayout.setElevation( 0 );