Demo05：RelativeLayout

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package com.wuqiong.demo05;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);    }}

<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="com.wuqiong.demo05.MainActivity" >    <TextView        android:id="@+id/text_view"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/type_here" /><EditText     android:id="@+id/edit_text"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_below="@id/text_view" /><Button     android:id="@+id/button1"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_below="@id/edit_text"    android:layout_alignParentRight="true"    android:text="OK"/><Button     android:id="@+id/button2"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_below="@id/edit_text"    android:layout_toLeftOf="@id/button1"    android:text="Cancel"/></RelativeLayout>

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