Android_RadioGroup实现Tab

效果图:

代码：

一.布局文件

 android:button="@null"  设置RadioGroup的圆圈消失

 android:drawableTop="@android:drawable/btn_star"   设置图片在文字的上面

<?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" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:background="#006644" >

        <RadioGroup
            android:id="@+id/rg"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <RadioButton
                android:id="@+id/rb_message"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:button="@null"
                android:checked="true"
                android:drawableTop="@android:drawable/btn_star"
                android:gravity="center"
                android:text="消息" />

            <RadioButton
                android:id="@+id/rb_contact"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:button="@null"
                android:drawableTop="@android:drawable/btn_star"
                android:gravity="center"
                android:text="联系人" />

            <RadioButton
                android:id="@+id/rb_dynamic"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:button="@null"
                android:drawableTop="@android:drawable/btn_star"
                android:gravity="center"
                android:text="动态" />

            <RadioButton
                android:id="@+id/rb_setting"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:button="@null"
                android:drawableTop="@android:drawable/btn_star"
                android:gravity="center"
                android:text="设置" />
        </RadioGroup>
    </LinearLayout>


</RelativeLayout>

二.设置按钮的选中事件监听器

package com.example.fragment;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;

public class MainActivity extends Activity {

	protected static final String TAG = "MainActivity";
	private RadioGroup rg;
	private RadioButton rb_message;
	private RadioButton rb_contact;
	private RadioButton rb_dynamic;
	private RadioButton rb_setting;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		init();

		// RadioGroup的点击事件
		rg.setOnCheckedChangeListener(new OnCheckedChangeListener() {

			@Override
			public void onCheckedChanged(RadioGroup arg0, int arg1) {

				if (arg1 == rb_message.getId()) {

					Log.i(TAG, "选中了消息的按钮");

				} else if (arg1 == rb_contact.getId()) {

					Log.i(TAG, "选中了联系人的按钮");

				} else if (arg1 == rb_dynamic.getId()) {

					Log.i(TAG, "选中了动态的按钮");

				} else if (arg1 == rb_setting.getId()) {

					Log.i(TAG, "选中了设置的按钮");

				}

			}
		});

	}

	/**
	 * 控件的实例化
	 */
	private void init() {

		rg = (RadioGroup) findViewById(R.id.rg);
		rb_message = (RadioButton) findViewById(R.id.rb_message);
		rb_contact = (RadioButton) findViewById(R.id.rb_contact);
		rb_dynamic = (RadioButton) findViewById(R.id.rb_dynamic);
		rb_setting = (RadioButton) findViewById(R.id.rb_setting);

	}

}