我有一个应用程序,它有导航类型固定标签+滑动。我使用两个片段创建了两个选项卡,片段1和片段2.它工作正常。现在我再次需要为片段1创建3个选项卡。如何实现?
这是我的MainActivity:
public class MainActivity extends FragmentActivity implements ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;// Tab titles
private String[] tabs = { "Flights","My Bookings" };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
}
这是我的TabsPagerAdapter类:
public class TabsPagerAdapter extends FragmentPagerAdapter {
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
@Override
public Fragment getItem(int index) {
// TODO Auto-generated method stub
switch (index) {
case 0:
return new Flight();
case 1:
return new Hotel();
}
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 2;
}
}
这是我的mainactivity.xml文件
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
然后我的应用程序中有两个片段活动Flight和Hotel。现在,我再次需要为片段活动航班添加标签。怎么能实现?有人可以帮帮我......
修改:这是来自网络的图片。这就是我想要的......
答案 0 :(得分:2)
添加另一个片段类如下:
@Override
public Fragment getItem(int index) {
// TODO Auto-generated method stub
switch (index) {
case 0:
return new Flight();
case 1:
return new Hotel();
case 2:
return new Thirdfragment();
}
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 3;
}
并且不要忘记在MainActivity类中添加第三个选项卡 private String [] tabs = {“Flights”,“My Bookings”,ThirdFragment};
答案 1 :(得分:1)
必须将您的航班片段布局更改为:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:descendantFocusability="blocksDescendants"
>
<TabHost
android:id="@+id/TabHost01"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabWidget
android:id="@android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<anylayout
android:id="@+id/tab_1"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
</anylayout>
<anylayout
android:id="@+id/tab_2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:dividerHeight="3dp" >
<anylayout
android:id="@+id/tab_3"
android:layout_width="match_parent"
android:layout_height="match_parent">
</anylayout>
</FrameLayout>
</LinearLayout>
</TabHost>
</LinearLayout>
并在onCreatView中:
mTabHost = (TabHost) v.findViewById(R.id.TabHost01);
mTabHost.setup();
mTabHost.addTab(mTabHost.newTabSpec("tab_1")
.setIndicator("View1_Child1")
.setContent(R.id.tab_1));
mTabHost.addTab(mTabHost.newTabSpec("tab_2")
.setIndicator("View2_Child2")
.setContent(R.id.tab_2));