初学Android之PullToRefresh+listview+ViewPager
来源：互联网 发布：埃德和沃伦夫妇知乎 编辑：程序博客网 时间：2024/06/05 03:46
首先是布局
主布局
<?xml version="1.0" encoding="utf-8"?><android.support.v4.widget.DrawerLayout 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"><RelativeLayout android:id="@+id/rela" android:layout_width="match_parent" android:layout_height="match_parent"> <FrameLayout android:id="@+id/frame_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_above="@+id/radio_group"> </FrameLayout> <RadioGroup android:id="@+id/radio_group" android:layout_width="match_parent" android:layout_height="50dp" android:layout_alignParentBottom="true" android:orientation="horizontal"> <RadioButton android:id="@+id/radio_01" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:background="@drawable/radio_selector" android:button="@null" android:checked="true" android:gravity="center" android:padding="10dp" android:text="首页" /> <RadioButton android:id="@+id/radio_02" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:background="@drawable/radio_selector" android:button="@null" android:gravity="center" android:padding="10dp" android:text="发现" /> <RadioButton android:id="@+id/radio_03" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:background="@drawable/radio_selector" android:button="@null" android:gravity="center" android:padding="10dp" android:text="下载" /> <RadioButton android:id="@+id/radio_04" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:background="@drawable/radio_selector" android:button="@null" android:gravity="center" android:padding="10dp" android:text="我的" /> </RadioGroup></RelativeLayout> <RelativeLayout android:id="@+id/relaa" android:layout_width="200dp" android:layout_height="match_parent" android:layout_gravity="left" android:background="#fff"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="fgg"/> </RelativeLayout></android.support.v4.widget.DrawerLayout>
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GridView的布局 也是fragment_kecheng的布局
<?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:orientation="vertical"> <!--中多了几个属性 分别以ptr开头，这是指定pullToRefreshListView在刷新的时候出现的特效， 比如ptrDrawable第一个是指定刷新时显示的图片，ptrAnimationStyle第二个是指定刷新的图片以何种方式显示出来， ptrHeaderBackground第三个是指定刷新时头部的背景，ptrHeaderTextColor第四个是指定刷新时头部字体的颜色。--> <com.handmark.pulltorefresh.library.PullToRefreshScrollView xmlns:ptr="http://schemas.android.com/apk/res-auto" android:id="@+id/refresh_scroll_view" android:layout_width="match_parent" android:layout_height="match_parent" ptr:ptrAnimationStyle="flip" ptr:ptrDrawable="@drawable/default_ptr_flip" ptr:ptrHeaderBackground="#383838" ptr:ptrHeaderTextColor="#FFFFFF"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <android.support.v4.view.ViewPager android:id="@+id/image_view_pager" android:layout_width="match_parent" android:layout_height="200dp"> </android.support.v4.view.ViewPager> <com.bawei.administrator.lianxi_1023pm.view.MyGridView android:id="@+id/scroll_grid_view" android:numColumns="2" android:layout_width="match_parent" android:layout_height="match_parent"> </com.bawei.administrator.lianxi_1023pm.view.MyGridView> </LinearLayout> </com.handmark.pulltorefresh.library.PullToRefreshScrollView></LinearLayout>
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首页的布局 fragment_shouye
GridView的布局 也是fragment_kecheng的布局
<?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:orientation="vertical" xmlns:app="http://schemas.android.com/apk/res-auto"> <android.support.design.widget.TabLayout android:id="@+id/tab" app:tabGravity="center" app:tabIndicatorColor="@color/colorAccent" app:tabMode="fixed" app:tabSelectedTextColor="@color/colorPrimaryDark" app:tabTextColor="@color/colorPrimary" android:layout_width="match_parent" android:layout_height="40dp"> </android.support.design.widget.TabLayout> <android.support.v4.view.ViewPager android:id="@+id/vp" android:layout_width="match_parent" android:layout_height="match_parent"> </android.support.v4.view.ViewPager></LinearLayout>
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推荐的布局 fragment_tuijian
GridView的布局 也是fragment_kecheng的布局 vp+xlv
<?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/vp" android:layout_width="match_parent" android:layout_height="200dp"></android.support.v4.view.ViewPager> <com.bawei.administrator.lianxi_1023pm.view.XListView android:layout_below="@+id/vp" android:id="@+id/xlv1" android:layout_width="match_parent" android:layout_height="match_parent"></com.bawei.administrator.lianxi_1023pm.view.XListView></RelativeLayout>
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下面radiogroup的布局
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:orientation="vertical" android:background="#00f" android:layout_height="match_parent"></LinearLayout>
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griditem的布局
GridView的布局 也是fragment_kecheng的布局
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:orientation="vertical" android:layout_height="match_parent"> <ImageView android:id="@+id/grid_image" android:src="@mipmap/ic_launcher" android:layout_width="100dp" android:layout_height="100dp" /> <TextView android:id="@+id/grid_text" android:layout_width="wrap_content" android:layout_height="wrap_content" /></LinearLayout>
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itemlayout的布局
<?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"> <TextView android:id="@+id/tv" android:layout_width="0dp" android:layout_weight="1" android:layout_height="wrap_content" /> <ImageView android:id="@+id/iv" android:layout_width="100dp" android:layout_height="100dp" /></LinearLayout>
剩下的布局就是xlv的两个了 footer和header的了
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适配器的代码 myadapter也是xlv的
package com.bawei.administrator.lianxi_1023pm.adapter;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.bawei.administrator.lianxi_1023pm.R;import com.bawei.administrator.lianxi_1023pm.bean.DataDataBean;import com.bawei.administrator.lianxi_1023pm.util.ImageLoaderUtil;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.List;/** * Created by ll on 2017/10/23. */public class MyAdapter extends BaseAdapter{ Context context; List<DataDataBean.DataBean> list; public MyAdapter(Context context, List<DataDataBean.DataBean> list) { this.context=context; this.list=list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int i) { return list.get(i); } @Override public long getItemId(int i) { return i; } @Override public View getView(int i, View view, ViewGroup viewGroup) { ImageHolder holder; if (view == null){ view = View.inflate(context, R.layout.item_layout,null); holder = new ImageHolder(); holder.textView = view.findViewById(R.id.tv); holder.imageView = view.findViewById(R.id.iv); view.setTag(holder); }else { holder = (ImageHolder) view.getTag(); } holder.textView.setText(list.get(i).getTITLE());// if (list.get(i).getIMAGEURL() != null){//// ImageLoader.getInstance().displayImage(list.get(i).getIMAGEURL().get(0) + "?imageView2/0/w/100", holder.imageView, ImageLoaderUtil.getRoundOption());// } ImageLoader.getInstance().displayImage((String) list.get(i).getIMAGEURL(),holder.imageView, ImageLoaderUtil.getCircleOption()); return view; } private class ImageHolder{ TextView textView; ImageView imageView; }}
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pageradapter的适配器
package com.bawei.administrator.lianxi_1023pm.adapter;import android.content.Context;import android.support.v4.view.PagerAdapter;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import com.bawei.administrator.lianxi_1023pm.util.ImageLoaderUtil;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.List;/** * Created by ll on 2017/10/23. */public class MyPagerAdapter extends PagerAdapter{ Context context; List<String> imageUrlList; public MyPagerAdapter(Context context, List<String> imageUrlList) { this.context=context; this.imageUrlList=imageUrlList; } @Override public int getCount() { return Integer.MAX_VALUE; } @Override public boolean isViewFromObject(View view, Object object) { return view == object; } @Override public Object instantiateItem(ViewGroup container, int position) { ImageView imageView = new ImageView(context); imageView.setScaleType(ImageView.ScaleType.FIT_XY); ImageLoader.getInstance().displayImage(imageUrlList.get(position%imageUrlList.size()),imageView, ImageLoaderUtil.getDefaultOption()); container.addView(imageView); return imageView; } @Override public void destroyItem(ViewGroup container, int position, Object object) { container.removeView((View) object); }}
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fragment的文件了
首页的fragment的代码
package com.bawei.administrator.lianxi_1023pm.fragment;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.design.widget.TabLayout;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentPagerAdapter;import android.support.v4.view.ViewPager;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import com.bawei.administrator.lianxi_1023pm.R;import java.util.ArrayList;import java.util.List;/** * Created by ll on 2017/10/23. */public class Frag_shouye extends Fragment{ private TabLayout tabLayout; private ViewPager vp; private List<String> list; @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_shouye,container,false); tabLayout = view.findViewById(R.id.tab); vp = view.findViewById(R.id.vp); return view; } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); list = new ArrayList<>(); list.add("推荐"); list.add("课程"); list.add("实战"); list.add("职业"); vp.setOffscreenPageLimit(list.size()); vp.setAdapter(new FragmentPagerAdapter(getChildFragmentManager()) { @Override public CharSequence getPageTitle(int position) { return list.get(position); } @Override public Fragment getItem(int position) { Fragment fragment=null; Frag_tuijian frag_tuijian = new Frag_tuijian(); Frag_kecheng frag_kecheng = new Frag_kecheng(); Frag_shizhan frag_shizhan = new Frag_shizhan(); Frag_zhiye frag_zhiye = new Frag_zhiye(); switch (position) { case 0: fragment=new Frag_tuijian(); break; case 1: fragment=new Frag_kecheng(); break; case 2: fragment=new Frag_shizhan(); break; case 3: fragment=new Frag_zhiye(); break; default: break; }// Bundle bundle = new Bundle();//// bundle.putString("name" , list.get(position));// Log.i("+++++", "getItem: ---"+list.get(position));// fragment.setArguments(bundle); return fragment; } @Override public int getCount() { return list.size(); } }); tabLayout.setupWithViewPager(vp); }}
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推荐的代码 也是用xlv写的
package com.bawei.administrator.lianxi_1023pm.fragment;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.annotation.Nullable;import android.support.v4.app.Fragment;import android.support.v4.view.ViewPager;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import com.bawei.administrator.lianxi_1023pm.R;import com.bawei.administrator.lianxi_1023pm.adapter.MyAdapter;import com.bawei.administrator.lianxi_1023pm.adapter.MyPagerAdapter;import com.bawei.administrator.lianxi_1023pm.bean.DataDataBean;import com.bawei.administrator.lianxi_1023pm.bean.LunBoBean;import com.bawei.administrator.lianxi_1023pm.inter.JsonCallBack;import com.bawei.administrator.lianxi_1023pm.inter.JsonStringCallaBack;import com.bawei.administrator.lianxi_1023pm.util.NetDataUtil;import com.bawei.administrator.lianxi_1023pm.util.NetDataUtilA;import com.bawei.administrator.lianxi_1023pm.view.XListView;import com.google.gson.Gson;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.List;/** * Created by ll on 2017/10/23. */public class Frag_tuijian extends Fragment implements XListView.IXListViewListener { private XListView xlv1; private ViewPager vp; private List<String> imageUrlList; private MyAdapter myAdapter; private List<DataDataBean.DataBean> list = new ArrayList<>(); private Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { if (msg.what == 0){ //显示下一页....拿到当前页+1 vp.setCurrentItem(vp.getCurrentItem() +1); //再次发送消息 handler.sendEmptyMessageDelayed(0,2000); } } }; @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_tuijian,container,false); xlv1 = view.findViewById(R.id.xlv1); vp = view.findViewById(R.id.vp); return view; } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); xlv1.setPullLoadEnable(true); xlv1.setPullLoadEnable(true); xlv1.setXListViewListener(this); getDataFromNet(); lunbo(); } private void lunbo() { NetDataUtilA.getData(getActivity(),"http://v3.wufazhuce.com:8000/api/reading/index/?version=3.5.0&platform=android", new JsonCallBack() { @Override public void getJsonString(String json) { //这个结合记录轮播图的所有地址 imageUrlList = new ArrayList<String>(); //解析数据 Gson gson = new Gson(); LunBoBean lunBoBean = gson.fromJson(json, LunBoBean.class); List<LunBoBean.DataBean.EssayBean> essay = lunBoBean.getData().getEssay(); for (LunBoBean.DataBean.EssayBean essayBean: essay) { //essayBean.getAuthor().get(0).getWeb_url() imageUrlList.add(essayBean.getAuthor().get(0).getWeb_url()); } //此时应该根据图片的路径,加载图片,设置适配器 MyPagerAdapter viewPagerAdapter = new MyPagerAdapter(getActivity(), imageUrlList); vp.setAdapter(viewPagerAdapter); //1.手动可以无限滑动....maxValue....把当前开始展示的位置放在足够大的某个位置 vp.setCurrentItem(imageUrlList.size()*100000); //2.自动轮播 handler.sendEmptyMessageDelayed(0,2000); } }); } private void getDataFromNet() { try { NetDataUtil.getData(getActivity(), "http://www.93.gov.cn/93app/data.do?channelId=0&startNum=0", new JsonStringCallaBack() { @Override public void getJsonString(String json) { Gson gson = new Gson(); DataDataBean dataDataBean = gson.fromJson(json, DataDataBean.class); list.addAll(dataDataBean.getData()); setAdapter(); xlv1.stopLoadMore(); } }); } catch (Exception e) { e.printStackTrace(); } } private void setAdapter() { if(myAdapter == null){ myAdapter = new MyAdapter(getActivity(), list); xlv1.setAdapter(myAdapter); }else { myAdapter.notifyDataSetChanged();; } } @Override public void onRefresh() { getDataRefresh(); } private void getDataRefresh() { try { NetDataUtil.getData(getActivity(), "http://www.93.gov.cn/93app/data.do?channelId=0&startNum=0", new JsonStringCallaBack() { @Override public void getJsonString(String json) { Gson gson = new Gson(); DataDataBean dataDataBean = gson.fromJson(json, DataDataBean.class); list.clear(); list.addAll(0,dataDataBean.getData()); setAdapter(); xlv1.stopRefresh(); String format = new SimpleDateFormat("HH:mm").format(new Date(System.currentTimeMillis())); xlv1.setRefreshTime(format); } }); } catch (Exception e) { e.printStackTrace(); } } @Override public void onLoadMore() { getDataFromNet(); } }
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这个是课程的 使用pulltorfresh写的代码
package com.bawei.administrator.lianxi_1023pm.fragment;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.annotation.Nullable;import android.support.v4.app.Fragment;import android.support.v4.view.ViewPager;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.GridView;import android.widget.ScrollView;import com.bawei.administrator.lianxi_1023pm.R;import com.bawei.administrator.lianxi_1023pm.adapter.MyAdapter;import com.bawei.administrator.lianxi_1023pm.adapter.MyAdapterA;import com.bawei.administrator.lianxi_1023pm.adapter.MyPagerAdapter;import com.bawei.administrator.lianxi_1023pm.bean.DataDataBean;import com.bawei.administrator.lianxi_1023pm.bean.LunBoBean;import com.bawei.administrator.lianxi_1023pm.inter.JsonCallBack;import com.bawei.administrator.lianxi_1023pm.util.NetDataUtilA;import com.google.gson.Gson;import com.handmark.pulltorefresh.library.ILoadingLayout;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshScrollView;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.List;/** * Created by ll on 2017/10/23. */public class Frag_kecheng extends Fragment{ private ViewPager viewPager; private GridView gridView; private MyAdapter myadapter; private MyAdapterA myadaptera; private int page_num = 1; private List<DataDataBean.DataBean> list = new ArrayList<>(); private List<String> imageUrlList; private ILoadingLayout startLabels; private PullToRefreshScrollView refreshScrollView; private Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { if (msg.what == 0){ //显示下一页....拿到当前页+1 viewPager.setCurrentItem(viewPager.getCurrentItem() +1); //再次发送消息 handler.sendEmptyMessageDelayed(0,2000); } } }; @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view=inflater.inflate(R.layout.fragment_kecheng,container,false); refreshScrollView = view.findViewById(R.id.refresh_scroll_view); viewPager = view.findViewById(R.id.image_view_pager); gridView = view.findViewById(R.id.scroll_grid_view); return view; } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); gridView.setFocusable(false); lunBoTu(); getDataFromNet(); refreshScrollView.setMode(PullToRefreshBase.Mode.BOTH); //3.设置刷新的时候展示的文字(状态) startLabels = refreshScrollView.getLoadingLayoutProxy(true, false); startLabels.setPullLabel("下拉刷新"); startLabels.setRefreshingLabel("正在刷新..."); startLabels.setReleaseLabel("放开刷新"); ILoadingLayout endLabels = refreshScrollView.getLoadingLayoutProxy(false, true); endLabels.setPullLabel("上拉刷新"); endLabels.setRefreshingLabel("正在载入..."); endLabels.setReleaseLabel("放开刷新..."); refreshScrollView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ScrollView>() { @Override public void onPullDownToRefresh(PullToRefreshBase<ScrollView> refreshView) { //下拉刷新....请求第一页的数据,清空之前的数据,然后再添加设置适配器 getRefreshData(); } @Override public void onPullUpToRefresh(PullToRefreshBase<ScrollView> refreshView) { //上拉刷新/加载...加载的时候页数++ //page_num++; getDataFromNet(); } }); } private void lunBoTu() { NetDataUtilA.getData(getActivity(),"http://v3.wufazhuce.com:8000/api/reading/index/?version=3.5.0&platform=android", new JsonCallBack() { @Override public void getJsonString(String json) { //这个结合记录轮播图的所有地址 imageUrlList = new ArrayList<String>(); //解析数据 Gson gson = new Gson(); LunBoBean lunBoBean = gson.fromJson(json, LunBoBean.class); List<LunBoBean.DataBean.EssayBean> essay = lunBoBean.getData().getEssay(); for (LunBoBean.DataBean.EssayBean essayBean: essay) { //essayBean.getAuthor().get(0).getWeb_url() imageUrlList.add(essayBean.getAuthor().get(0).getWeb_url()); } //此时应该根据图片的路径,加载图片,设置适配器 MyPagerAdapter viewPagerAdapter = new MyPagerAdapter(getActivity(), imageUrlList); viewPager.setAdapter(viewPagerAdapter); //1.手动可以无限滑动....maxValue....把当前开始展示的位置放在足够大的某个位置 viewPager.setCurrentItem(imageUrlList.size()*100000); //2.自动轮播 handler.sendEmptyMessageDelayed(0,2000); } }); } private void getRefreshData() { NetDataUtilA.getData(getActivity(),"http://www.93.gov.cn/93app/data.do?channelId=0&startNum=0", new JsonCallBack() { @Override public void getJsonString(String json) { //解析 Gson gson = new Gson(); DataDataBean dataDataBean = gson.fromJson(json, DataDataBean.class); //先清空一下数据 list.clear(); //添加到集合的最前边,,,,(0,,,,) list.addAll(0,dataDataBean.getData()); //设置适配器 setAdapter(); //设置适配器之后停止刷新的操作 refreshScrollView.onRefreshComplete(); //可以设置刷新的时间.... startLabels.setLastUpdatedLabel("上次更新时间:"+new SimpleDateFormat("HH:mm").format(new Date(System.currentTimeMillis())));//last最近的,最后一次update修改/更新 } }); } private void getDataFromNet() { NetDataUtilA.getData(getActivity(),"http://www.93.gov.cn/93app/data.do?channelId=0&startNum=0", new JsonCallBack() { @Override public void getJsonString(String json) { //解析 Gson gson = new Gson(); DataDataBean dataDataBean = gson.fromJson(json, DataDataBean.class); //往后面添加... list.addAll(dataDataBean.getData()); //设置适配器 setAdapter(); //停止刷新 refreshScrollView.onRefreshComplete(); } }); } private void setAdapter() { if (myadaptera == null){ myadaptera = new MyAdapterA(getActivity(),list); gridView.setAdapter(myadaptera); }else { myadaptera.notifyDataSetChanged(); } }}
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普通平常的fragment加载布局
package com.bawei.administrator.lianxi_1023pm.fragment;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import com.bawei.administrator.lianxi_1023pm.R;/** * Created by ll on 2017/10/23. */public class Frag_xiazai extends Fragment{ @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view=inflater.inflate(R.layout.fragment_xiazai,container,false); return view; } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); }}
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剩下的就是主文件的了
package com.bawei.administrator.lianxi_1023pm;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.widget.RadioGroup;import com.bawei.administrator.lianxi_1023pm.fragment.Frag_faxian;import com.bawei.administrator.lianxi_1023pm.fragment.Frag_shouye;import com.bawei.administrator.lianxi_1023pm.fragment.Frag_wode;import com.bawei.administrator.lianxi_1023pm.fragment.Frag_xiazai;public class MainActivity extends AppCompatActivity { private RadioGroup rg; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); rg = (RadioGroup) findViewById(R.id.radio_group); getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,new Frag_shouye()).commit(); rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup radioGroup, int i) { switch (i) { case R.id.radio_01: getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,new Frag_shouye()).commit(); break; case R.id.radio_02: getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,new Frag_faxian()).commit(); break; case R.id.radio_03: getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,new Frag_xiazai()).commit(); break; case R.id.radio_04: getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,new Frag_wode()).commit(); break; default: break; } } }); }}
最后就是权限的问题了
GridView的布局 也是fragment_kecheng的布局
<uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
完毕！
GridView的布局 也是fragment_kecheng的布局
阅读全文
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