Android EditText设置边框

简述
在Android4.0以后，EditText默认的是一条下划线，如果要设置边框，就得自己给EditText设置backgroud，在drawable自定义xml 作为EditText的背景，具体代码如下：
edittext_backgroud.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:shape="rectangle">
            <solid android:color="@android:color/transparent" />
            <corners
                android:radius="3px"
                />
            <stroke
                android:width="1px"
                android:color="#FFFFFF"/>
        </shape>
    </item>
</layer-list>
  

2.应用

 mEdt = new EditText(this);
        mEdt.setHint(this.getResources().getString(R.string.edt_tips));
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(200, 50);
        layoutParams.leftMargin = left;
        layoutParams.topMargin = top;
        layoutParams.rightMargin = right;
        layoutParams.bottomMargin = bottom;
        mEdt.setLayoutParams(layoutParams);
        mEdt.setTextSize(10);
        mEdt.setBackgroundResource(R.drawable.edit_bg);