Reiativelayout

一
package cn.edubztx.relativelayout;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class RelativeLayoutProperty1Activity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_relative_layout_property1);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.relative_layout_property1, menu);
		return true;
	}

}
二
<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: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=".RelativeLayoutProperty1Activity" >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_centerInParent="true"
        android:src="@drawable/star" />

    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:src="@drawable/penguin" />

    <ImageView
        android:id="@+id/imageView3"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:src="@drawable/penguin" />

    <ImageView
        android:id="@+id/imageView5"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_alignRight="@+id/imageView1"
        android:layout_below="@+id/imageView1"
        android:layout_marginTop="19dp"
        android:src="@drawable/penguin" />

    <ImageView
        android:id="@+id/imageView4"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_above="@+id/imageView1"
        android:layout_alignRight="@+id/imageView1"
        android:layout_marginBottom="18dp"
        android:src="@drawable/penguin" />

</RelativeLayout>

三
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="cn.edubztx.relativelayout"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="cn.edubztx.relativelayout.MainActivity"
            android:label="@string/app_name" >
           
        </activity>
        <activity
            android:name="cn.edubztx.relativelayout.RelativeLayoutProperty1Activity"
            android:label="@string/title_activity_relative_layout_property1" >
             <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>