• 比FragmentViewPager还高级的用法


    首先设置布局:

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/activity_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context="com.example.administrator.myradiobutton.MainActivity">

        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            ></android.support.v4.view.ViewPager>
        
        <RadioGroup
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
            <RadioButton
                android:id="@+id/xinwen"
                android:text="新闻"
                android:drawableTop="@drawable/select_main_xinwen"
                android:checked="true"
                style="@style/ab_style" />
            <RadioButton
                android:id="@+id/pinglun"
                android:text="评论"
                android:drawableTop="@drawable/select_main_pinlun"
                android:checked="true"
                style="@style/ab_style" />
            <RadioButton
                android:id="@+id/yonghu"
                android:text="用户"
                android:drawableTop="@drawable/select_main_yonghu"
                android:checked="true"
                style="@style/ab_style" />
            <RadioButton
                android:id="@+id/shezhi"
                android:text="设置"
                android:drawableTop="@drawable/select_main_setting"
                android:checked="true"
                style="@style/ab_style" />


        </RadioGroup>
    </LinearLayout>
    其中style样式设置:右键生成公共样式

    然后设置每个Fragment页面

    然后设置adapter适配器:

    package com.gfd.tab;

    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentManager;
    import android.support.v4.app.FragmentPagerAdapter;

    import com.gfd.tab.ui.fragment.HomeFragment;
    import com.gfd.tab.ui.fragment.LoveFragment;
    import com.gfd.tab.ui.fragment.RenFragment;
    import com.gfd.tab.ui.fragment.VedioFragment;

    /*
    *  PagerAdapter
    *
    *  FragmentPagerAdapter
    *
    *  FragmentStatePagerAdapter
    *
    *
    *
     */
    public class HomePagerAdapter extends FragmentPagerAdapter {

        public HomePagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            Fragment fragment = null;
            switch (position) {
                case 0:
                    fragment = new HomeFragment();
                    break;
                case 1:
                    fragment = new LoveFragment();
                    break;
                case 2:
                    fragment = new RenFragment();
                    break;
                case 3:
                    fragment = new VedioFragment();
                    break;
            }
            return fragment;
        }

        @Override
        public int getCount() {
            return 4;
        }


       /* @Override
        public int getCount() {
            return 5;
        }

        *//**
         * 作用:是否创建一个新页面 : true:不创建 false :创建
         * @param view : 当前页面展示的视图
         * @param object :将要滑进来的视图
         * *//*
        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view == object;
        }


        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            Log.e("tag","instantiateItem -----" + position);
            TextView view = new TextView(container.getContext());
            view.setText("fffffffffff");
            container.addView(view);
            return view;
        }


        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            Log.e("tag","destroyItem -----" + position);
        }*/
    }
    最后activity设置

    package com.gfd.tab.ui.activity;

    import android.os.Bundle;
    import android.support.v4.view.ViewPager;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;

    import com.gfd.tab.HomePagerAdapter;
    import com.gfd.tab.R;

    import butterknife.BindView;
    import butterknife.ButterKnife;
    import butterknife.OnClick;

    public class MainActivity extends AppCompatActivity {


        @BindView(R.id.vp_home)
        ViewPager vpHome;
        @BindView(R.id.rb_mian_home)
        RadioButton rbMianHome;
        @BindView(R.id.rb_mian_love)
        RadioButton rbMianLove;
        @BindView(R.id.rb_mian_ren)
        RadioButton rbMianRen;
        @BindView(R.id.rb_mian_vedio)
        RadioButton rbMianVedio;
        @BindView(R.id.radiogroup)
        RadioGroup radioGroup;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            ButterKnife.bind(this);
            vpHome.setAdapter(new HomePagerAdapter(getSupportFragmentManager()));
            vpHome.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
                @Override
                public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

                }

                @Override
                public void onPageSelected(int position) {
                    RadioButton radioButton = (RadioButton) radioGroup.getChildAt(position);
                    radioButton.setChecked(true);

                }

                @Override
                public void onPageScrollStateChanged(int state) {

                }
            });

        }

        @OnClick({R.id.rb_mian_home, R.id.rb_mian_love, R.id.rb_mian_ren, R.id.rb_mian_vedio})
        public void onClick(View view) {
            switch (view.getId()) {
                case R.id.rb_mian_home://首页
                    vpHome.setCurrentItem(0,false);
                    break;
                case R.id.rb_mian_love://关注
                    vpHome.setCurrentItem(1,false);
                    break;
                case R.id.rb_mian_ren://联系人
                    vpHome.setCurrentItem(2,false);
                    break;
                case R.id.rb_mian_vedio://视频
                    vpHome.setCurrentItem(3,false);
                    break;
            }
        }
    }
    --------------------

    以上列子与之前的不同,代码少了哈哈,之前将Fragment放入了集合中使用,具体详看另个文件!!!

    2.静态页面,点击改变上面页面不滑动代码:

    需改变,布局:

    activity:

    使用事务完成:

    package com.gfd.tab.ui.activity;

    import android.os.Bundle;
    import android.support.v4.app.FragmentManager;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.FrameLayout;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;

    import com.gfd.tab.R;
    import com.gfd.tab.ui.fragment.HomeFragment;
    import com.gfd.tab.ui.fragment.LoveFragment;
    import com.gfd.tab.ui.fragment.RenFragment;
    import com.gfd.tab.ui.fragment.VedioFragment;

    import butterknife.BindView;
    import butterknife.ButterKnife;
    import butterknife.OnClick;

    public class SecondActivity extends AppCompatActivity {


        @BindView(R.id.frame_layout)
        FrameLayout layout;
        @BindView(R.id.rb_mian_home)
        RadioButton rbMianHome;
        @BindView(R.id.rb_mian_love)
        RadioButton rbMianLove;
        @BindView(R.id.rb_mian_ren)
        RadioButton rbMianRen;
        @BindView(R.id.rb_mian_vedio)
        RadioButton rbMianVedio;
        @BindView(R.id.radiogroup)
        RadioGroup radioGroup;
        private FragmentManager fragmentManager;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_second);
            ButterKnife.bind(this);
            fragmentManager = getSupportFragmentManager();
            fragmentManager.beginTransaction().replace(R.id.frame_layout,new HomeFragment()).commit();

        }

        @OnClick({R.id.rb_mian_home, R.id.rb_mian_love, R.id.rb_mian_ren, R.id.rb_mian_vedio})
        public void onClick(View view) {
            switch (view.getId()) {
                case R.id.rb_mian_home://首页
                    fragmentManager.beginTransaction().replace(R.id.frame_layout,new HomeFragment()).commit();
                    break;
                case R.id.rb_mian_love://关注
                    fragmentManager.beginTransaction().replace(R.id.frame_layout,new LoveFragment()).commit();
                    break;
                case R.id.rb_mian_ren://联系人
                    fragmentManager.beginTransaction().replace(R.id.frame_layout,new RenFragment()).commit();
                    break;
                case R.id.rb_mian_vedio://视频
                    fragmentManager.beginTransaction().replace(R.id.frame_layout,new VedioFragment()).commit();
                    break;
            }
        }
    }
    -------------除去adapter,-----

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  • 原文地址:https://www.cnblogs.com/ll-ouyang/p/6394898.html
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