我使用ViewPager创建向左滑动的片段,现在我想在每个片段页面中插入片段.
activityMain.xml
还有这个：
tab0_fragment.xml
我在mainActivity.java中有一个ViewPager
final ViewPager viewPager = (ViewPager) findViewById(R.id.myviewpager);
viewPager.setAdapter(new PagerAdapter() {
...
...
}
我尝试通过片段布局在viewpager中打开一个屏幕.
我试试这个：
final ViewPager viewPager = (ViewPager) findViewById(R.id.myviewpager);
viewPager.setAdapter(new PagerAdapter() {
...
public Object instantiateItem(final ViewGroup container,final int position) {
if (position == 0)
{
final View view = LayoutInflater.from(getBaseContext()).inflate(R.layout.fragment_tab0,null,false);
FragmentTransaction fragmentTransaction = mFragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.myviewpager,new tab0Fragment()).commit();
container.addView(view);
return view;
}
else if (position == 1)
...
}
...
}
AND tab0Fragment.java
public class tab0Fragment extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_tab0,null);
}
}
我是机器人中的菜鸟.怎么能纠正这个代码？
解：
答案不是我的答案,但这对我帮助很大.
根据@Mr. Rabbit ans @Amit Upadhyay我将顶级代码更改为：
@Override
public Object instantiateItem(final ViewGroup container,final int position) {
if (position == 0)
{
final View view = LayoutInflater.from(getBaseContext()).inflate(R.layout.fragment_tab0,false);
MyAdapter adapter = new MyAdapter(getSupportFragmentManager());
adapter.addFragment(new tab0Fragment(),getResources().getString(R.string.tab0));
container.addView(view);
return view;
}
else if (position == 1)
{
并根据@Mr添加MyAdapter类.兔子的答案.
希望能帮助别人.
最佳答案
尝试将适配器和代码分开.
原文链接：https://www.f2er.com/android/430104.htmlMyAdapter.java
public class MyAdapter extends FragmentPagerAdapter{
private final List创建你的碎片
FragmentOne.java
public class FragmentOne extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater,@Nullable ViewGroup container,@Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_one,container,false);
return view;
}
}
FragmentTwo.java
public class FragmentTwo extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater,@Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_two,false);
return view;
}
}
在您的活动中设置您的viewpager.
final ViewPager viewPager = (ViewPager) findViewById(R.id.myviewpager);
MyAdapter adapter = new MyAdapter(getSupportFragmentManager());
// Add your fragments in adapter.
FragmentOne fragmentOne = new FragmentOne();
adapter.addFragment(fragmentOne,getResources().getString(R.string.fragment_one_title));
FragmentTwo fragmentTwo = new FragmentTwo();
adapter.addFragment(fragmentTwo,getResources().getString(R.string.fragment_two_title));
viewPager.setAdapter(adapter);
然后最后使用ViewPager设置NavigationTabBar.
final NavigationTabBar navigationTabBar = (NavigationTabBar) findViewById(R.id.ntb_horizontal);
navigationTabBar.setViewPager(viewPager,2);
