Android之UI编程(一):线性布局

package com.example.fk_layout;

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

public class LinearLayout extends Activity {

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:gravity="top|center_horizontal">

<Button
android:id="@+id/btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn1"
/>

<Button
android:id="@+id/btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn2"
/>

<Button
android:id="@+id/btn3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn3"
/>

<Button
android:id="@+id/btn4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn4"
/>
</LinearLayout>

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

<string name="app_name">fk_layout</string>
<string name="hello_world">Hello world!</string>
<string name="btn1">测试按钮1</string>
<string name="btn2">测试按钮2</string>
<string name="btn3">测试按钮3</string>
<string name="btn4">测试按钮4</string>

</resources>