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Я пытаюсь создать ListView, чтобы каждую ячейку можно было перемещать как ViewPager. Подобно Google Gmail, которое может переносить электронные письма, чтобы удалить электронные письма. Он работает НО показывая ничего.Создание ListView с android.support.v4.view.ViewPager показывая ничего
Я создал ListView с BaseAdapter. Адаптер создает ViewPager с PagerAdapter, который реализует FragmentStatePagerAdapter. PagerAdapter активирует фрагмент, который должен отображать данные в ячейках пейджеров. Не могли бы вы помочь?
package com.tegrity.gui;
import java.util.ArrayList;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.Context;
import android.os.Bundle;
import android.support.v13.app.FragmentStatePagerAdapter;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
public class MyFregment extends Fragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
/**
* simple ListView
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.my_view1, container, false);
ListView mMyListView = (ListView) view.findViewById(R.id.myList1);
// create the my adapter
MyAdapter mMyAdapter = new MyAdapter(getActivity());
mMyListView.setAdapter(mMyAdapter);
// This is working but without the ListView
// view = inflater.inflate(R.layout.connect_pager_view, null);
// android.support.v4.view.ViewPager myPagerUnit =
// (android.support.v4.view.ViewPager)
// view.findViewById(R.id.connect_pager);
// PagerAdapter pagerAdapter = new MyPagerAdapter(getFragmentManager(),
// 0);
// myPagerUnit.setAdapter(pagerAdapter);
return view;
}
// the data
private static ArrayList<String> mMyList0 = new ArrayList<String>();
/**
* my adapter
*/
public class MyAdapter extends BaseAdapter {
// the data
private ArrayList<String> mMyList = new ArrayList<String>();
private Context mContext;
private LayoutInflater mInflater;
public MyAdapter(Context context) {
mContext = context;
mInflater = LayoutInflater.from(mContext);
mMyList.add("First line");
mMyList.add("Second line");
mMyList.add("Third line");
mMyList0 = mMyList;
}
@Override
public int getCount() {
return mMyList.size();
}
@Override
public Object getItem(int position) {
return mMyList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// optimization
if (convertView == null) {
convertView = mInflater.inflate(R.layout.connect_pager_view,
null);
}
android.support.v4.view.ViewPager myPagerUnit = (android.support.v4.view.ViewPager) convertView
.findViewById(R.id.connect_pager);
PagerAdapter pagerAdapter = new MyPagerAdapter(
getFragmentManager(), position);
myPagerUnit.setAdapter(pagerAdapter);
myPagerUnit
.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
((Activity) mContext).invalidateOptionsMenu();
}
});
return convertView;
}
}
/**
* A simple pager adapter
*/
class MyPagerAdapter extends FragmentStatePagerAdapter {
// parameters from the my adapter
private int mPosition;
public MyPagerAdapter(FragmentManager fm, int position) {
super(fm);
mPosition = position;
}
@Override
public Fragment getItem(int pagePosition) {
return MyUnitFragment.create(pagePosition, mPosition);
}
@Override
public int getCount() {
return 2; // pager of 2 cells
}
}
/**
* my basic unit
*/
public static class MyUnitFragment extends Fragment {
public static final String PAGE = "page";
public static final String POSITION = "position";
private int mPageNumber;
// parameter from the my adapter
private int mPosition;
/**
* Factory method for this fragment class. Constructs a new fragment for
* the given page number.
*/
public static MyUnitFragment create(int pageNumber, int position) {
MyUnitFragment fragment = new MyUnitFragment();
Bundle args = new Bundle();
args.putInt(PAGE, pageNumber);
args.putInt(POSITION, position);
fragment.setArguments(args);
return fragment;
}
public MyUnitFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mPageNumber = getArguments().getInt(PAGE);
mPosition = getArguments().getInt(POSITION);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout containing a title and body text.
View convertView = (View) inflater.inflate(R.layout.bookmark_unit,
container, false);
// page parts
String data = mMyList0.get(mPosition);
TextView textView = (TextView) convertView
.findViewById(R.id.bookmarkText1);
switch (mPageNumber) {
case 0: {
textView.setText(data + " at the first page");
break;
}
case 1: {
textView.setText(data + " at the second page");
break;
}
}
return convertView;
}
/**
* Returns the page number represented by this fragment object.
*/
public int getPageNumber() {
return mPageNumber;
}
}
}
XML для ListView myList1.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@color/white" >
<ListView android:id="@+id/myList1"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:divider="@drawable/course_divider"
android:dividerHeight="2dp"
android:cacheColorHint="#00000000" >
</ListView>
</LinearLayout>
XML для пейджера connect_pager_view.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/connect_pager"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</android.support.v4.view.ViewPager>
Список блок my_unit.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView android:id="@+id/myText1"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp"
android:textColor="@color/black"
android:layout_marginLeft="6dp">
</TextView>
</LinearLayout>
http://stackoverflow.com/questions/8164485/viewpager-and-onitemclicklistener-in-listview/8548580#8548580. Проверьте ответ Дианны Хакборн. – Raghunandan