21 ViewPager RadioGroup

时间：2023-03-09 07:51:49
21 ViewPager RadioGroup
  • 结构

    21 ViewPager RadioGroup

MainActivity.java

package com.qf.day21_viewpagerfragmentrg_demo4;

import java.util.ArrayList;

import java.util.List;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentPagerAdapter;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.text.Layout;

import android.view.Gravity;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.RadioGroup.OnCheckedChangeListener;

import android.widget.TableLayout.LayoutParams;

public class MainActivity extends FragmentActivity {

    private ViewPager viewPager;

    private RadioGroup rgMain;

    // 数据集合

    private List<Fragment> list = new ArrayList<Fragment>();

    private String[] titles = { "新闻", "娱乐", "军事", "体育" };

    private RadioButton[] rbs;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        // 初始化View

        initView();

        // 初始化ViewPager

        initViewPager();

        // 初始化导航书签

        initTab();

    }

    // 初始化导航书签

    public void initTab() {

        rbs = new RadioButton[titles.length];

        for (int i = 0; i < titles.length; i++) {

            // 动态创建RadioButton

            rbs[i] = new RadioButton(getApplicationContext());

            // rbs[i].setText(titles[i]);

            rbs[i].setGravity(Gravity.CENTER);

            BitmapDrawable a = null;

            rbs[i].setButtonDrawable(a);

            rbs[i].setBackgroundResource(R.drawable.selector_main);

            int screenWith = getResources().getDisplayMetrics().widthPixels;

            int eachWith = screenWith / titles.length;

            rbs[i].setWidth(eachWith);

            rgMain.addView(rbs[i]);

        }

        // 默认第0个元素是被选中的

        rbs[0].setChecked(true);

        rgMain.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override

            public void onCheckedChanged(RadioGroup group, int checkedId) {

                // TODO Auto-generated method stub

                for (int i = 0; i < titles.length; i++) {

                    if (rbs[i].getId() == checkedId) {

                        // Viewpager滑动到 点击的RadioButton上

                        viewPager.setCurrentItem(i);

                    }

                }

            }

        });

    }

    // 初始化ViewPager

    public void initViewPager() {

        // 获取数据源

        for (int i = 0; i < titles.length; i++) {

            MyFragment myFragment = MyFragment.getInstance(i + 1);

            list.add(myFragment);

        }

        viewPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager()));

        viewPager.setOnPageChangeListener(new OnPageChangeListener() {

            @Override

            public void onPageSelected(int arg0) {

                // TODO Auto-generated method stub

                rbs[arg0].setChecked(true);

            }

            @Override

            public void onPageScrolled(int arg0, float arg1, int arg2) {

                // TODO Auto-generated method stub

            }

            @Override

            public void onPageScrollStateChanged(int arg0) {

                // TODO Auto-generated method stub

            }

        });

    }

    // 初始化View

    public void initView() {

        viewPager = (ViewPager) findViewById(R.id.viewPager);

        rgMain = (RadioGroup) findViewById(R.id.rg_main);

    }

    class MyFragmentPagerAdapter extends FragmentPagerAdapter {

        public MyFragmentPagerAdapter(FragmentManager fm) {

            super(fm);

            // TODO Auto-generated constructor stub

        }

        @Override

        public Fragment getItem(int arg0) {

            // TODO Auto-generated method stub

            return list.get(arg0);

        }

        @Override

        public int getCount() {

            // TODO Auto-generated method stub

            return list.size();

        }

    }

}

MyFragment.java

package com.qf.day21_viewpagerfragmentrg_demo4;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import android.app.Activity;

import android.os.Bundle;

import android.support.v4.app.ListFragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.SimpleAdapter;

import android.widget.TextView;

public class MyFragment extends ListFragment {

    private  TextView tvShow;

    private int index =0;

    public static MyFragment getInstance(int index){

        MyFragment myFragment = new MyFragment();

        Bundle args = new Bundle();

        args.putInt("index", index);

        myFragment.setArguments(args);

        return myFragment;

    }

    @Override

    public void onAttach(Activity activity) {

        // TODO Auto-generated method stub

        super.onAttach(activity);

        Bundle bundle = getArguments();

        if(bundle!=null){

            index = bundle.getInt("index");

        }

    }

    @Override

    public void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

    }

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

            Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        View v = inflater.inflate(R.layout.fragment_layout, container, false);

        tvShow = (TextView) v.findViewById(R.id.tv_show);

        return v;

    }

    @Override

    public void onActivityCreated(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onActivityCreated(savedInstanceState);

        switch (index) {

        case 1:

            tvShow.setText("您点击了书签1");

            break;

        case 2:

            tvShow.setText("您点击了书签2");

            break;

        case 3:

            tvShow.setText("您点击了书签3");

            break;

        case 4:

            tvShow.setText("您点击了书签4");

            break;

        default:

            break;

        }

        SimpleAdapter adapter = new SimpleAdapter(

                getActivity(),

                loadNetWorkData(),

                R.layout.item,

                new String[]{"icon","title","content"},

                new int[]{R.id.iv_item,R.id.title_item,R.id.content_item});

        setListAdapter(adapter);

    }

    /**

     * 假设从网络获取数据

     * @return

     */

    private List<Map<String,Object>> loadNetWorkData(){

        List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();

        for(int i=0;i<20;i++){

            Map<String, Object> map = new HashMap<String, Object>();

            map.put("icon", R.drawable.ic_launcher);

            map.put("title", "郭XX大战曹XXX"+i+"tab"+index);

            map.put("content", "降龙十八掌赢"+i+"tab"+index);

            list.add(map);

        }

        return list;

    }

    @Override

    public void onStart() {

        // TODO Auto-generated method stub

        super.onStart();

    }

    @Override

    public void onResume() {

        // TODO Auto-generated method stub

        super.onResume();

    }

    @Override

    public void onPause() {

        // TODO Auto-generated method stub

        super.onPause();

    }

    @Override

    public void onStop() {

        // TODO Auto-generated method stub

        super.onStop();

    }

    @Override

    public void onDestroyView() {

        // TODO Auto-generated method stub

        super.onDestroyView();

    }

    @Override

    public void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

    }

    @Override

    public void onDetach() {

        // TODO Auto-generated method stub

        super.onDetach();

    }

}

selector_main.xml

<?xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android" >

    <item android:state_checked="true" android:drawable="@android:drawable/ic_menu_add"></item>

    <item android:state_checked="false" android:drawable="@android:drawable/ic_menu_day"></item>

</selector>

activity_main.xml

<LinearLayout 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"

    android:orientation="vertical"

    tools:context=".MainActivity" >

    <RadioGroup

        android:id="@+id/rg_main"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal"

         >

    </RadioGroup>

    <View

        android:layout_width="match_parent"

        android:layout_height="1dp"

        android:background="#f00"

        />

    <android.support.v4.view.ViewPager

        android:id="@+id/viewPager"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        ></android.support.v4.view.ViewPager>

</LinearLayout>

fragment_layout.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:orientation="vertical" >

    <TextView

        android:id="@+id/tv_show"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:textColor="#f00"

        android:text="AAA"

        />

    <ListView

        android:id="@android:id/list"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        ></ListView>

</LinearLayout>

item.xml

<?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"

     >

    <ImageView

        android:id="@+id/iv_item"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:src="@drawable/ic_launcher"

        />

    <TextView

        android:id="@+id/title_item"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_toRightOf="@id/iv_item"

        android:text="name"

        />

    <TextView

        android:id="@+id/content_item"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_toRightOf="@id/iv_item"

        android:text="aaa"

        android:layout_alignBottom="@id/iv_item"

        />

</RelativeLayout>

相关文章