Android EditText获得焦点时边框颜色变深
<EditText android:layout_width="fill_parent" android:layout_height="36dip" android:background="@drawable/bg_edittext" android:padding="5dip" android:layout_margin="36dip" android:textColorHint="#AAAAAA" android:textSize="15dip" android:singleLine="true" android:hint="请输入..." />

接下来建立三个xml文件，分别为输入框未获得焦点时的背景，输入框获得焦点时的背景，selector背景选择器（这里能获得输入框什么时候获得和失去焦点），代码如下：

bg_edittext_normal.xml(未获得焦点时)

<?xml version="1.0" encoding="UTF-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">    <solid android:color="#FFFFFF" />    <corners android:radius="3dip" />    <stroke android:width="1dip" android:color="#BDC7D8" /></shape>

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bg_edittext_focused.xml(获得焦点时)

<?xml version="1.0" encoding="UTF-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">    <solid android:color="#FFFFFF" />    <corners android:radius="3dip" />    <stroke android:width="1dip" android:color="#728ea3" /></shape>

?bg_edittext.xml(selector选择器，这方面资料网上很多)

<?xml version="1.0" encoding="UTF-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android">    <item android:state_window_focused="false"        android:drawable="@drawable/contact_edit_edittext_normal" />    <item android:state_focused="true"        android:drawable="@drawable/contact_edit_edittext_focused" /></selector>

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