求帮忙看下程序错在哪，谢谢activity_main<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
</RelativeLayout>layout01<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/image_view01"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/a"/>
</LinearLayout>layout02<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/image_view02"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/b"/>
</LinearLayout>layout03<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/image_view03"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/c"/>
</LinearLayout>Fragment01public class Fragment01 extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view1=inflater.inflate(R.layout.layout01,container,false);
return view1;
}
}Fragment02public class Fragment02 extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view2=inflater.inflate(R.layout.layout02,container,false);
return view2;
}
}Fragment03public class Fragment03 extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view3=inflater.inflate(R.layout.layout03,container,false);
return view3;
}
}MyAdapterpublic class MyAdapter extends FragmentPagerAdapter {
private List<Fragment> fragmentList;
public myAdapter(FragmentManager fm, List<Fragment> fragmentList) {
super(fm);
this.fragmentList = fragmentList;
}
@Override
public Fragment getItem(int position) {
return fragmentList.get(position);
}
@Override
public int getCount() {
return fragmentList.size();
}
}MainActivitypublic class MainActivity extends Activity {
private List<Fragment> fragmentList;
private ViewPager viewPager;
private Fragment fragment01,fragment02,fragment03;
private myAdapter myAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fragmentList=new ArrayList<>();
viewPager=(ViewPager)findViewById(R.id.view_pager);
fragmentList.add(fragment01);
fragmentList.add(fragment02);
fragmentList.add(fragment03);
myAdapter=new myAdapter(getSupportFragmentManager(),fragmentList);
viewPager.setAdapter(myAdapter);
}
}
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