Radiogroup+DrawerLayout切换效果

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
android:id="@+id/dl"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"

tools:context="com.example.a.moni.MainActivity">

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/fl"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/rg"
></FrameLayout>

<RadioGroup
android:id="@+id/rg"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="60dp">
<RadioButton
android:id="@+id/rb1"
android:layout_width="0dp"
android:layout_height="60dp"
android:textSize="16sp"
android:layout_weight="1"
android:background="@drawable/b1"
android:button="@null"
android:checked="true"
android:gravity="center"
android:padding="10dp"
android:text="首頁" />

<RadioButton
android:id="@+id/rb2"
android:layout_width="0dp"
android:layout_height="60dp"
android:textSize="16sp"
android:layout_weight="1"
android:background="@drawable/b1"
android:button="@null"
android:gravity="center"
android:padding="10dp"
android:text="发现" />

<RadioButton
android:id="@+id/rb3"
android:layout_width="0dp"
android:layout_height="60dp"
android:textSize="16sp"
android:layout_weight="1"
android:background="@drawable/b1"
android:button="@null"
android:gravity="center"
android:padding="10dp"
android:text="下载" />

<RadioButton
android:id="@+id/rb4"
android:layout_width="0dp"
android:layout_height="60dp"
android:textSize="16sp"
android:layout_weight="1"
android:background="@drawable/b1"
android:button="@null"
android:padding="10dp"
android:text="我的" />

</RadioGroup>
</RelativeLayout>

<RelativeLayout
android:id="@+id/rl"
android:layout_width="300dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:background="#ffffff">

<ImageView
android:id="@+id/image_touxiang"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_centerHorizontal="true"
android:layout_margin="10dp"
android:src="@mipmap/ic_launcher" />

<ListView
android:id="@+id/list_view_drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/image_touxiang">

</ListView>
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>

import android.os.Bundle;
import android.support.annotation.IdRes;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.FrameLayout;
import android.widget.ListView;
import android.widget.RadioGroup;
import android.widget.RelativeLayout;

import com.example.a.moni.fragment.Faxian;
import com.example.a.moni.fragment.Shouye;
import com.example.a.moni.fragment.Wode;
import com.example.a.moni.fragment.Xiazai;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

private FrameLayout fl;
private  RadioGroup rg;
private DrawerLayout dl;
private RelativeLayout rl;
private ListView lv;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fl = (FrameLayout) findViewById(R.id.fl);
dl = (DrawerLayout) findViewById(R.id.dl);
rl = (RelativeLayout) findViewById(R.id.rl);
lv = (ListView) findViewById(R.id.list_view_drawer);
List<String> list=new ArrayList<>();
list .add("钱包");
list .add("行程记录");
list .add("好友邀请");
list .add("设置");
list .add("购买特权卡");

ArrayAdapter<String> adapter=new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,android.R.id.text1,list);

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lv.setAdapter(adapter);
rg=(RadioGroup)findViewById(R.id.rg);

getSupportFragmentManager().beginTransaction().replace(R.id.fl, new Shouye()).commit();
rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, @IdRes int i) {
switch (i) {
case R.id.rb1:
getSupportFragmentManager().beginTransaction().replace(R.id.fl, new Shouye()).commit();
break;
case R.id.rb2:
getSupportFragmentManager().beginTransaction().replace(R.id.fl, new Faxian()).commit();
break;
case R.id.rb3:
getSupportFragmentManager().beginTransaction().replace(R.id.fl, new Xiazai()).commit();
break;
case R.id.rb4:
getSupportFragmentManager().beginTransaction().replace(R.id.fl, new Wode()).commit();
break;

default:
break;
}
}
});

}
}