Android Button点击事件

一.Button点击事件

<!-- activity_main.xml -->
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:background="#FFFFFF"
android:gravity="center"
android:orientation="vertical"
tools:context=".MainActivity">

    <Button
        android:id="@+id/button_one"
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:background="@drawable/ic_btn_seletor"