viewpager中的片段，找不到视图错误

viewpager中的片段，找不到视图错误

我找到了解决该问题的方法，并修改了您的类，以使该错误不再发生。

唯一的主要区别是您应该使用a

DialogFragment

而不是a

Dialog

，这样您就可以访问

getChildFragmentManager()

并

FragmentManager

从接收正确的信息

DialogFragment

。

即使您以前使用

getChildFragmentManager()

过，它也来自，

MyFragment

并且

PagerDialog

该类不是中的子片段

MyFragment

。

我已经测试了以下代码，现在应该可以正常工作。

我的碎片

public class MyFragment extends Fragment {    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        View v = inflater.inflate(R.layout.fragment_sandbox, container, false);        Button button = (Button) v.findViewById(R.id.button);        button.setonClickListener(new onClickListener() { @Override public void onClick(View arg0) {     DialogFragment newFragment = PagerDialog.newInstance();     newFragment.show(getChildFragmentManager(), "dialog"); }        });        return v;    }}

传呼对话框

public class PagerDialog extends DialogFragment {    public static PagerDialog newInstance() {        return new PagerDialog();    }    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        View v = inflater.inflate(R.layout.dialog_fragment, container, false);        ViewPager mViewPager = (ViewPager) v.findViewById(R.id.view_pager);                MyAdapter mAdapter = new MyAdapter(getChildFragmentManager());        mViewPager.setAdapter(mAdapter);        return v;    }    private class MyAdapter extends FragmentStatePagerAdapter {        public MyAdapter(FragmentManager fm) { super(fm);        }        @Override        public Fragment getItem(int index) { return new DummyFragment();        }        @Override        public int getCount() { return 2;        }    }}

虚拟片段

public class DummyFragment extends Fragment {    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        View v = inflater.inflate(R.layout.fragment_dummy_layout, container, false);        return v;    }}

fragment_sandbox.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:gravity="center">    <Button        android:id="@+id/button"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Test Fragment Dialog Pager"        android:textSize="24sp"        android:padding="20dp" /></LinearLayout>

dialog_fragment.xml

<?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:gravity="center"    android:orientation="vertical" >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Fragment Dialog Title Text "        android:padding="10dp"        android:textColor="#333"        android:textSize="24sp"/>    <android.support.v4.view.ViewPager        android:id="@+id/view_pager"        android:layout_width="match_parent"        android:layout_height="200dp"/></LinearLayout>

fragment_dummy_layout.xml

    <?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:gravity="center">    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Fragment Dummy Text"        android:textSize="24sp"        android:textColor="#ff0000"/></LinearLayout>