android 用Radio实现的底部导航

package test.com.bottomnavigationradio;

import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v4.app.Fragment;
import android.widget.RadioGroup;

public class MainActivity extends AppCompatActivity {
    RadioGroup radioGroup;
    OneFragment oneFragment;
    TwoFragment twoFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        radioGroup=(RadioGroup)findViewById(R.id.radioGroup);
        oneFragment=new OneFragment();
        twoFragment=new TwoFragment();

        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                Fragment fragment=null;
                switch (checkedId)
                {
                    case R.id.one:
                        fragment=new OneFragment();//第一页
                        break;
                    case R.id.two:
                        fragment=new TwoFragment();//第二页
                        break;

                }
                JumpFragment(fragment);
            }
        });

    radioGroup.check(R.id.one);//默认选择
    }

    /**
     * 跳转
     * @param fragment
     */
    private void JumpFragment(Fragment fragment)
    {
        FragmentManager fragmentManager=getSupportFragmentManager();
        fragmentManager.beginTransaction().replace(R.id.main_fragment,fragment).commit();
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        return super.onOptionsItemSelected(item);
    }

}

-------------------------

<?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">
    <FrameLayout
        android:id="@+id/main_fragment"
        android:layout_width="match_parent"
        android:layout_height="473dp">
    </FrameLayout>
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="2dp"
    android:background="#454343"
    ></LinearLayout>
    <RadioGroup
        android:id="@+id/radioGroup"
        android:layout_width="match_parent"
        android:layout_height="75dp"
        android:orientation="horizontal"
        android:gravity="center">
        <RadioButton
            android:id="@+id/one"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="首页"
            android:button="@null"
            android:drawableTop="@drawable/bottom_one"
            android:textColor="@drawable/selector_color_home"/>
        <RadioButton
            android:id="@+id/two"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="第二页"
            android:button="@null"
            android:layout_marginLeft="10dp"
            android:drawableTop="@drawable/bottom_one"
            android:textColor="@drawable/selector_color_home"/>
    </RadioGroup>
</LinearLayout>

-----------------------------

package test.com.bottomnavigationradio;

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;
//第一页
public class OneFragment extends Fragment {

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_one, container, false);
    }

}

-----------------

package test.com.bottomnavigationradio;

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;

//第二页
public class TwoFragment extends Fragment {

    public TwoFragment() {
        super();
    }


    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater layoutInflater, ViewGroup viewGroup,Bundle savedInstanceState)
    {
        return layoutInflater.inflate(R.layout.fragment_two,viewGroup,false);
    }
}

--------------

<?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:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="首页"/>
</LinearLayout>

-------------

<?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:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="第二页"/>
</LinearLayout>