warnning信息：

Hardcoded string "登 录", should use @string resource

代码应该没有问题：

activity_login.xml

styles_xml

<!--    登录按钮-->
    <style name="commitBtn">
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">@dimen/btnHeight</item>
        <item name="android:textColor">@android:color/white</item>
        <item name="android:textSize">@dimen/titleSize</item>
        <item name="android:layout_marginLeft">@dimen/marginSize</item>
        <item name="android:layout_marginRight">@dimen/marginSize</item>
        <item name="android:gravity">center</item>
        <item name="background">@drawable/btn_commit_select</item>
    </style>

btn_commit_select.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

<!--   View高亮 -->
<item android:state_focused="true" android:drawable="@drawable/commit_btn_h"/>
<item android:state_pressed="true" android:drawable="@drawable/commit_btn_h"/>
<item android:state_selected="true" android:drawable="@drawable/commit_btn_h"/>
<!--    View默认-->
<item android:drawable="@drawable/commit_btn_n"/>
</selector>

commit_btn_h.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
<!--实体颜色-->
    <solid android:color="@color/mainColorH"/>
<!--弧度-->
    <corners android:radius="@dimen/radius"/>

</shape>

commit_btn_n.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
<!--实体颜色-->
    <solid android:color="@color/mainColor"/>
<!--弧度-->
    <corners android:radius="@dimen/radius"/>

</shape>