[Android] Android ViewPager 中加载 Fragment的两种方式 方式(一)

Android ViewPager 中加载 Fragmenet的两种方式

一、当fragment里面的内容较少时,直接 使用fragment xml布局文件填充

文件总数

布局文件:view_one.xml + view_two.xml

自定义Adapter类: MyPagerAdapter1.java   (继承自 PagerAdapter 类)

Activity 布局文件:  activity_test_vp1.xml

Activity Java文件:  MainActivity.java

本文以2个Page为例,来展现实现代码

1)xml布局文件

view_one.xml   (view_two.xml类似)

<?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:background="#FFBA55"
android:gravity="center"
android:orientation="vertical"> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="第一个Page"
android:textColor="#000000"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>

2)自定义Adapter类 MyPagerAdapter1.java


package com.jack.testmd;

import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup; import java.util.ArrayList; public class MyPagerAdapter1 extends PagerAdapter {
private ArrayList<View> viewLists; public MyPagerAdapter1(ArrayList<View> viewLists) {
this.viewLists = viewLists;
} @Override
public int getCount() {
return viewLists.size();
} @Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
} @Override
public Object instantiateItem(ViewGroup container, int position) {
container.addView(viewLists.get(position));
return viewLists.get(position);
} @Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView(viewLists.get(position));
}
}

3)Activity 布局文件:  activity_test_vp1.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".TestVp1Activity"> <android.support.v4.view.ViewPager
android:id="@+id/vpager_one"
android:layout_width="match_parent"
android:layout_height="match_parent"> </android.support.v4.view.ViewPager> </RelativeLayout>

4)使用 -- Activity Java文件:  MainActivity.java :

 

private ViewPager vpager_one;
private ArrayList<View> aList;
private MyPagerAdapter1 mAdapter; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test_vp1); vpager_one = (ViewPager) findViewById(R.id.vpager_one); //页面数据较少的情况 或 页面很简单
aList = new ArrayList<View>();
aList.add(getLayoutInflater().inflate(R.layout.view_one, null, false));
aList.add(getLayoutInflater().inflate(R.layout.view_two, null, false)); mAdapter = new MyPagerAdapter1(aList);
vpager_one.setAdapter(mAdapter);
}

方法二:

https://www.cnblogs.com/wukong1688/p/10693536.html

Android ViewPager 中加载 Fragment的两种方式 方式(二)

本博客地址: wukong1688

本文原文地址:https://www.cnblogs.com/wukong1688/p/10692055.html

转载请著名出处!谢谢~~

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