使用相对布局RelativeLayout

1、新建工程

2、建好工程后，修改activity_main.xml

<RelativeLayout xmlns:android=""
    xmlns:tools=""
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    tools:context="${relativePackage}.${activityClass}" >

    <TextView
        android:id="@+id/label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/text_view_area" />
    <EditText
        android:id="@+id/edit"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/label" />
    <Button
        android:id="@+id/ok"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/edit"
        android:layout_alignParentRight="true"
        android:layout_marginLeft="10dip"
        android:text="OK"/>
    <Button
        android:id="@+id/cancel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toLeftOf="@+id/ok"
        android:layout_alignTop="@+id/ok"
        android:text="Cancel"/>

</RelativeLayout>

修改strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">relativelayout</string>
    <string name="text_view_area">text view area:</string>

</resources>

代码MainActivity.java不变

package com.example.linearlayout;

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

public class MainActivity extends Activity {

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

3、运行效果