相对布局（作业）-- MarsChen Android 开发教程学习笔记

<RelativeLayout 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:padding="20dp"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.shumin.lbs03.MainActivity" >
<TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:layout_marginTop="18dp"        android:gravity="center|top"        android:text="开始游戏" />    <ImageView         android:id="@+id/imageView1"        android:layout_below="@id/textView1"        android:layout_height="wrap_content"        android:layout_width="wrap_content"        android:layout_margin="5dp"        android:src="@drawable/eweibo"/>    <ImageView         android:id="@+id/imageView2"        android:layout_height="wrap_content"        android:layout_width="wrap_content"        android:layout_below="@id/textView1"        android:layout_toRightOf="@id/imageView1"        android:layout_margin="5dp"        android:src="@drawable/eweibo"/>        <RadioGroup         android:id="@+id/group1"        android:layout_height="wrap_content"        android:layout_width="wrap_content"        android:layout_below="@id/imageView1"        android:layout_alignLeft="@id/imageView1">        <RadioButton            android:id="@+id/jiandao1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_margin="3dp"            android:text="剪刀"            ></RadioButton>        <RadioButton            android:id="@+id/shitou1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_margin="3dp"            android:text="石头"            ></RadioButton>        <RadioButton            android:id="@+id/bu1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_margin="3dp"            android:text="布"            ></RadioButton>    </RadioGroup>    <RadioGroup         android:id="@+id/group2"        android:layout_height="wrap_content"        android:layout_width="wrap_content"        android:layout_below="@id/imageView2"        android:layout_alignLeft="@id/imageView2">        <RadioButton            android:id="@+id/jiandao2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_margin="3dp"            android:text="剪刀"                            ></RadioButton>        <RadioButton            android:id="@+id/shitou2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_margin="3dp"            android:text="石头"            ></RadioButton>        <RadioButton            android:id="@+id/bu2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_margin="3dp"            android:text="布"            ></RadioButton>    </RadioGroup>
<Button         android:id="@+id/button"        android:layout_height="wrap_content"        android:layout_width="wrap_content"        android:layout_below="@id/group2"        android:layout_alignRight="@id/imageView2"        android:text="开始"/></RelativeLayout>

package com.shumin.lbs03;
import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;

public class MainActivity extends Activity {
@Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }

@Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }
@Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}