blocks|key|164030|text|实际上，以编程方式设置EditText的下划线颜色相当容易(只需一行代码)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|164031|设置颜色的步骤：|164032|editText.getBackground().setColorFilter(color,+PorterDuff.Mode.SRC_IN);|code-block|syntax|javascript|164033|要删除颜色，请执行以下操作：|164034|editText.getBackground().clearColorFilter();|164035|注意:当EditText启用+focus+时，您设置的颜色将不会生效，而是具有焦点颜色。|offset|length|style|BOLD|164036|接口参考：|164037|Drawable#setColorFilter|164038|Drawable#clearColorFilter|164039|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/reference/android/graphics/drawable/Drawable.html#setColorFilter(int,%2520android.graphics.PorterDuff.Mode)|1|http://developer.android.com/reference/android/graphics/drawable/Drawable.html#clearColorFilter()^0|0|0|0|0|0|E|7|0|0|0|N|0|0|0|P|1|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|19|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1A|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|1B|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|1C|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|1D|8|@$O|1E|P|1F|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|6|7|1G|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1H|8|@]|9|@$O|1I|P|1J|1|1K]]|A|$]]|$1|W|3|X|5|6|7|1L|8|@]|9|@$O|1M|P|1N|1|1O]]|A|$]]|$1|Y|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15]]|16|$5|11|12|13|A|$14|17]]]]

It's actually fairly easy to set the underline color of an EditText programmatically (just one line of code).

To set the color:

<pre><code>editText.getBackground().setColorFilter(color, PorterDuff.Mode.SRC_IN);
</code></pre>

To remove the color:

<pre><code>editText.getBackground().clearColorFilter();
</code></pre>

Note: when the EditText has focus on, the color you set won't take effect, instead, it has a focus color.

API Reference:

<a href="http://developer.android.com/reference/android/graphics/drawable/Drawable.html#setColorFilter(int,%20android.graphics.PorterDuff.Mode)" rel="noreferrer">Drawable#setColorFilter</a>

<a href="http://developer.android.com/reference/android/graphics/drawable/Drawable.html#clearColorFilter()" rel="noreferrer">Drawable#clearColorFilter</a>

blocks|key|2757406|text|在EditText+xml布局中使用android:backgroundTint=""。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2757407|对于api<21，您可以从支持库中使用AppCompatEditText，然后使用app:backgroundTint=""|2757408|entityMap^0|1|8|I|P|0|J|H|15|L|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|I|$]]

Use <code>android:backgroundTint=""</code> in your <code>EditText</code> xml layout.

For api&lt;21 you can use <code>AppCompatEditText</code> from support library then<code>app:backgroundTint=""</code>

blocks|key|165527|text|对于EditText的每种状态(焦点、启用、激活)，您必须使用不同的背景图像，而不是颜色。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|165528|http://android-holo-colors.com/|165529|在上面的网站上，你可以从全息主题的许多组件中获得图像。只需选择"EditText“和您想要的颜色即可。您可以在页面底部看到预览。|165530|下载.zip文件，并复制粘贴项目中的资源(图像和XML)。|165531|如果您的XML命名为:+apptheme_edit_text_holo_light.xml+(或类似的名称)：|165532|165533|转到你的XML+"styles.xml“并添加定制的EditText样式：|ordered-list-item|165534|只需在你的EditText中这样做：|165535|165536|<+style="@style/EditTextCustomHolo"/>文本android:layout_width="wrap_content“android:layout_height="wrap_content”#en0#|165537|仅此而已，我希望它能帮到你。|165538|entityMap|0|LINK|mutability|MUTABLE|url^0|2|8|0|0|V|0|0|0|0|0|0|Q|8|0|5|8|0|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|18|8|@]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|H|3|I|5|6|7|1C|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|1D|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|1E|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1G|8|@$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|R|3|S|5|Q|7|1J|8|@$9|1K|A|1L|B|C]]|D|@]|E|$]]|$1|T|3|-4|5|6|7|1M|8|@]|D|@]|E|$]]|$1|U|3|V|5|6|7|1N|8|@]|D|@]|E|$]]|$1|W|3|X|5|6|7|1O|8|@]|D|@]|E|$]]|$1|Y|3|-4|5|6|7|1P|8|@]|D|@]|E|$]]]|Z|$10|$5|11|12|13|E|$14|G]]]]

You have to use a different background image, not color, for each state of the <code>EditText</code> (focus, enabled, activated).

<a href="http://android-holo-colors.com/" rel="noreferrer">http://android-holo-colors.com/</a>

In the site above, you can get images from a lot of components in the Holo theme. Just select "EditText" and the color you want. You can see a preview at the bottom of the page.

Download the .zip file, and copy paste the resources in your project (images and the XML).

if your XML is named: apptheme_edit_text_holo_light.xml (or something similar):

<ol>
<li>Go to your XML "styles.xml" and add the custom <code>EditText</code> style:

<pre><code>&lt;style name="EditTextCustomHolo" parent="android:Widget.EditText"&gt;
 &lt;item name="android:background"&gt;@drawable/apptheme_edit_text_holo_light&lt;/item&gt;
 &lt;item name="android:textColor"&gt;#ffffff&lt;/item&gt;
&lt;/style&gt;
</code></pre></li>
<li>Just do this in your <code>EditText</code>:

<pre><code>&lt;EditText
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 style="@style/EditTextCustomHolo"/&gt;
</code></pre></li>
</ol>

And that's it, I hope it helps you.

blocks|key|2757447|text|这在新旧版本的Android上都很好用(即使在API10上也很好用！)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2757448|在styles.xml中定义此样式|offset|length|style|CODE|2757449|<style+name="EditText.Login"+parent="Widget.AppCompat.EditText">
++++<item+name="android:textColor">@android:color/white</item>
++++<item+name="android:textColorHint">@android:color/darker_gray</item>
++++<item+name="colorAccent">@color/blue</item>
++++<item+name="colorControlNormal">@color/blue</item>
++++<item+name="colorControlActivated">@color/blue</item>
</style>|code-block|syntax|javascript|2757450|现在，在XML中，将其设置为主题和样式(+style+设置textColor，+theme+设置所有其他内容)：|BOLD|2757451|<EditText
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"
++++android:inputType="text"
++++style="@style/EditText.Login"
++++android:theme="@style/EditText.Login"/>|2757452|2757453|编辑|2757454|此解决方案会在较新的Android版本(棒棒糖或棉花糖更高版本)上造成一个小的UI故障，即选择手柄带有下划线。|2757455|在this+thread中讨论了这个问题。(我还没有亲自尝试过这个解决方案)|2757456|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/37588019/edittext-with-custom-theme-shows-underline-under-selection-handle^0|0|1|A|0|0|K|7|13|7|T|9|0|0|0|0|0|1|B|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|17|8|@$D|18|E|19|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|1A|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1B|8|@$D|1C|E|1D|F|O]|$D|1E|E|1F|F|O]|$D|1G|E|1H|F|G]]|9|@]|A|$]]|$1|P|3|Q|5|J|7|1I|8|@]|9|@]|A|$K|L]]|$1|R|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1K|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1L|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1M|8|@]|9|@$D|1N|E|1O|1|1P]]|A|$]]|$1|Y|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15]]]]

This works fine for old and new version of Android (works fine even on API 10!).

Define this style in your <code>styles.xml</code>:

<pre><code>&lt;style name="EditText.Login" parent="Widget.AppCompat.EditText"&gt;
 &lt;item name="android:textColor"&gt;@android:color/white&lt;/item&gt;
 &lt;item name="android:textColorHint"&gt;@android:color/darker_gray&lt;/item&gt;
 &lt;item name="colorAccent"&gt;@color/blue&lt;/item&gt;
 &lt;item name="colorControlNormal"&gt;@color/blue&lt;/item&gt;
 &lt;item name="colorControlActivated"&gt;@color/blue&lt;/item&gt;
&lt;/style&gt;
</code></pre>

And now in your XML, set this as theme and style (style to set <code>textColor</code>, and theme to set all other things):

<pre><code>&lt;EditText
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:inputType="text"
 style="@style/EditText.Login"
 android:theme="@style/EditText.Login"/&gt;
</code></pre>

<hr>

<h2>Edit</h2>

This solution causes a tiny UI glitch on newer Android versions (Lollipop or Marshmallow onwards) that the selection handles are underlined.

This issue is discussed in <a href="https://stackoverflow.com/questions/37588019/edittext-with-custom-theme-shows-underline-under-selection-handle">this thread</a>. (I haven't tried this solution personally)

blocks|key|162887|text|您可以更改EditText颜色的下划线颜色，并在styles.xml中指定它。在你的应用程序主题styles.xml中添加以下内容。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|162888|<item+name="android:textColorSecondary">@color/primary_text_color</item>+|code-block|syntax|javascript|162889|正如ana在评论部分指出的那样|162890|++<item+name="android:colorControlActivated">@color/black</item>|162891|在主题样式中设置它可以很好地改变edittext下划线的颜色。|162892|entityMap^0|5|8|O|A|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

you can change Underline of EditText color specifying it in styles.xml. In your app theme styles.xml add the following.

<pre><code>&lt;item name="android:textColorSecondary"&gt;@color/primary_text_color&lt;/item&gt; 
</code></pre>

As pointed out by ana in comment section

<pre><code> &lt;item name="android:colorControlActivated"&gt;@color/black&lt;/item&gt;
</code></pre>

setting this in theme style works well for changing color of an edittext underline.

blocks|key|2757425|text|因此，您需要在可绘制文件夹中创建一个新的.xml文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2757426|在文件中粘贴以下代码：|2757427|<?xml+version="1.0"+encoding="utf-8"?>
<layer-list+xmlns:android="http://schemas.android.com/apk/res/android">
+++<item
++++android:bottom="8dp"
++++android:left="-3dp"
++++android:right="-3dp"
++++android:top="-3dp">
++++<shape+android:shape="rectangle">
+++++<stroke
+++++++android:width="1dp"
+++++++android:color="@color/white"/>
+++++</shape>
+++</item>
</layer-list>|code-block|syntax|javascript|2757428|在你的EditText中，设置|2757429|android:background="@drawable/your_drawable"|2757430|您可以使用可绘制的xml、设置边角、填充等。|2757431|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

So, you need to create a new .xml file in your drawable folder.

In that file paste this code:

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android"&gt;
 &lt;item
 android:bottom="8dp"
 android:left="-3dp"
 android:right="-3dp"
 android:top="-3dp"&gt;
 &lt;shape android:shape="rectangle"&gt;
 &lt;stroke
 android:width="1dp"
 android:color="@color/white"/&gt;
 &lt;/shape&gt;
 &lt;/item&gt;
&lt;/layer-list&gt;
</code></pre>

And in your EditText, set

<pre><code>android:background="@drawable/your_drawable"
</code></pre>

You can play with your drawable xml, set corners, paddings, etc.

blocks|key|161749|text|在您的应用程序样式中，定义属性colorAccent。在这里您可以找到一个示例|type|unstyled|depth|inlineStyleRanges|entityRanges|data|161750|<style+name="AppTheme"+parent="Theme.AppCompat.Light">
++++
++++<item+name="colorPrimary">@color/action_bar</item>
++++<item+name="colorPrimaryDark">@color/primary_dark</item>
++++<item+name="colorAccent">@color/action_bar</item>
</style>|code-block|syntax|javascript|161751|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In your app style define the property colorAccent. Here you find an example

<pre><code>&lt;style name="AppTheme" parent="Theme.AppCompat.Light"&gt;
 &lt;!-- Customize your theme here. --&gt;
 &lt;item name="colorPrimary"&gt;@color/action_bar&lt;/item&gt;
 &lt;item name="colorPrimaryDark"&gt;@color/primary_dark&lt;/item&gt;
 &lt;item name="colorAccent"&gt;@color/action_bar&lt;/item&gt;
&lt;/style&gt;
</code></pre>

blocks|key|164109|text|只需使用下面这行代码，您就可以轻松地以编程方式更改EditText的颜色：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|164110|edittext.setBackgroundTintList(ColorStateList.valueOf(yourcolor));|offset|length|style|CODE|164111|entityMap^0|0|0|1U|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

You can change the color of EditText programmatically just using this line of code easily:

<code>edittext.setBackgroundTintList(ColorStateList.valueOf(yourcolor));</code>

blocks|key|2757475|text|要更改底线颜色，可以在应用程序主题中使用：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2757476|<style+name="AppTheme"+parent="Theme.AppCompat.Light.DarkActionBar">
++++
++++<item+name="colorPrimary">@color/colorPrimary</item>
++++<item+name="colorPrimaryDark">@color/colorPrimaryDark</item>
++++<item+name="colorAccent">@color/colorAccent</item>

++++<item+name="colorControlNormal">#c5c5c5</item>
++++<item+name="colorControlActivated">#ffe100</item>
++++<item+name="colorControlHighlight">#ffe100</item>
</style>|code-block|syntax|javascript|2757477|要更改浮动标签颜色的将写入以下主题：|2757478|<style+name="TextAppearence.App.TextInputLayout"+parent="@android:style/TextAppearance">
<item+name="android:textColor">#4ffd04[![enter+image+description+here][1]][1]</item>
</style>|2757479|并在布局中使用此主题：|2757480|+<android.support.design.widget.TextInputLayout
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"
++++android:layout_margin="20dp"
++++app:hintTextAppearance="@style/TextAppearence.App.TextInputLayout">

++++<EditText
++++++++android:id="@%2Bid/edtTxtFirstName_CompleteProfileOneActivity"
++++++++android:layout_width="match_parent"
++++++++android:layout_height="wrap_content"
++++++++android:capitalize="characters"
++++++++android:hint="User+Name"
++++++++android:imeOptions="actionNext"
++++++++android:inputType="text"
++++++++android:singleLine="true"
++++++++android:textColor="@android:color/white"+/>

</android.support.design.widget.TextInputLayout>|2757481|​|2757482|📷|atomic|2757483|2757484|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/3aad22265a52dd9daa55e376e7a5b211.png|imageAlt^0|K|1|0|0|A|8|0|0|0|B|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1A|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1B|8|@$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|1E|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1F|8|@$9|1G|A|1H|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|1I|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|1J|8|@]|D|@]|E|$]]|$1|U|3|V|5|W|7|1K|8|@]|D|@$9|1L|A|1M|1|1N]]|E|$]]|$1|X|3|T|5|6|7|1O|8|@]|D|@]|E|$]]|$1|Y|3|-4|5|6|7|1P|8|@]|D|@]|E|$]]]|Z|$10|$5|11|12|13|E|$14|15|16|-4]]]]

To change bottom line color, you can use this in your app theme:

<pre><code>&lt;style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"&gt;
 &lt;!-- Customize your theme here. --&gt;
 &lt;item name="colorPrimary"&gt;@color/colorPrimary&lt;/item&gt;
 &lt;item name="colorPrimaryDark"&gt;@color/colorPrimaryDark&lt;/item&gt;
 &lt;item name="colorAccent"&gt;@color/colorAccent&lt;/item&gt;

 &lt;item name="colorControlNormal"&gt;#c5c5c5&lt;/item&gt;
 &lt;item name="colorControlActivated"&gt;#ffe100&lt;/item&gt;
 &lt;item name="colorControlHighlight"&gt;#ffe100&lt;/item&gt;
&lt;/style&gt;
</code></pre>

To change floating label color write following theme:

<pre><code>&lt;style name="TextAppearence.App.TextInputLayout" parent="@android:style/TextAppearance"&gt;
&lt;item name="android:textColor"&gt;#4ffd04[![enter image description here][1]][1]&lt;/item&gt;
&lt;/style&gt;
</code></pre>

and use this theme in your layout:

<pre><code> &lt;android.support.design.widget.TextInputLayout
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_margin="20dp"
 app:hintTextAppearance="@style/TextAppearence.App.TextInputLayout"&gt;

 &lt;EditText
 android:id="@+id/edtTxtFirstName_CompleteProfileOneActivity"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:capitalize="characters"
 android:hint="User Name"
 android:imeOptions="actionNext"
 android:inputType="text"
 android:singleLine="true"
 android:textColor="@android:color/white" /&gt;

&lt;/android.support.design.widget.TextInputLayout&gt;
</code></pre>

<a href="https://i.stack.imgur.com/9bH1k.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9bH1k.png" alt="enter image description here"></a>

blocks|key|2757333|text|使用下面的代码更改编辑文本边框的背景颜色。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2757334|在drawable下创建新的XML文件。|2757335|abc.xml|offset|length|style|BOLD|2757336|<shape+xmlns:android="http://schemas.android.com/apk/res/android"
++++android:shape="rectangle">
++++<solid+android:color="#00000000"+/>
++++<stroke+android:width="1dip"+android:color="#ffffff"+/>
</shape>|code-block|syntax|javascript|2757337|并将其添加为编辑文本的背景|2757338|android:background="@drawable/abc"|2757339|entityMap^0|0|0|0|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@$F|X|G|Y|H|I]]|9|@]|A|$]]|$1|J|3|K|5|L|7|Z|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|L|7|11|8|@]|9|@]|A|$M|N]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

Use below code to change background color of edit-text's border.

Create new XML file under drawable.

abc.xml

<pre><code>&lt;shape xmlns:android="http://schemas.android.com/apk/res/android"
 android:shape="rectangle"&gt;
 &lt;solid android:color="#00000000" /&gt;
 &lt;stroke android:width="1dip" android:color="#ffffff" /&gt;
&lt;/shape&gt;
</code></pre>

and add it as background of your edit-text

<pre><code>android:background="@drawable/abc"
</code></pre>

blocks|key|164081|text|如果您不需要支持API+<+21的设备，可以在xml中使用backgroundHint，例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|164082|+<EditText
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="wrap_content"
++++++++++++android:inputType="textPersonName"
++++++++++++android:hint="Task+Name"
++++++++++++android:ems="10"
++++++++++++android:id="@%2Bid/task_name"
++++++++++++android:layout_marginBottom="15dp"
++++++++++++android:textAlignment="center"
++++++++++++android:textColor="@android:color/white"

++++++++++++android:textColorLink="@color/blue"
++++++++++++android:textColorHint="@color/blue"
++++++++++++android:backgroundTint="@color/lighter_blue"+/>|code-block|syntax|javascript|164083|要获得更好的支持和后备，请使用@Akariuz解决方案。backgroundHint是最无痛的解决方案，但不向后兼容，根据您的需求拨打电话。|164084|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you don't have to support devices with API &lt; 21, use backgroundHint in xml, for example:

<pre><code> &lt;EditText
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:inputType="textPersonName"
 android:hint="Task Name"
 android:ems="10"
 android:id="@+id/task_name"
 android:layout_marginBottom="15dp"
 android:textAlignment="center"
 android:textColor="@android:color/white"

 android:textColorLink="@color/blue"
 android:textColorHint="@color/blue"
 android:backgroundTint="@color/lighter_blue" /&gt;
</code></pre>

For better support and fallbacks use @Akariuz solution.
backgroundHint is the most painless solution, but not backward compatible, based on your requirements make a call.

blocks|key|162927|text|在colorAccent上更改您需要的颜色设置的colorAccent，然后运行，您将获得输出|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|162928|entityMap^0|1|B|O|B|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

change your <code>colorAccent</code> which color you need that color set on <code>colorAccent</code> and run you get the output

blocks|key|164113|text|你可以用AppCompatEditText和颜色选择器来实现：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|164114|++++++++++++<androidx.appcompat.widget.AppCompatEditText
++++++++++++++++android:layout_width="match_parent"
++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++app:backgroundTint="@color/selector_edittext_underline"+/>|code-block|syntax|javascript|164115|selector_edittext_underline.xml：|164116|<selector+xmlns:android="http://schemas.android.com/apk/res/android">
++++<item+android:color="@color/focused_color"+
++++++++++android:state_focused="true"+/>
++++<item+android:color="@color/hint_color"+/>
</selector>|164117|注意:将这个选择器文件放在res/color文件夹中，而不是res/drawable文件夹中。通常情况下，res/color不存在，我们可能必须创建它。|offset|length|style|CODE|164118|entityMap^0|0|0|0|0|D|9|U|C|1H|9|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]|$M|Z|N|10|O|P]|$M|11|N|12|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|R|$]]

You can do it with AppCompatEditText and color selector:
<pre><code> &lt;androidx.appcompat.widget.AppCompatEditText
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;wrap_content&quot;
 app:backgroundTint=&quot;@color/selector_edittext_underline&quot; /&gt;
</code></pre>
selector_edittext_underline.xml:
<pre><code>&lt;selector xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;&gt;
 &lt;item android:color=&quot;@color/focused_color&quot; 
 android:state_focused=&quot;true&quot; /&gt;
 &lt;item android:color=&quot;@color/hint_color&quot; /&gt;
&lt;/selector&gt;
</code></pre>
NOTE: Put this selector file in <code>res/color</code> folder, not <code>res/drawable</code>. ususually <code>res/color</code> does not exist and we may have to create it.

blocks|key|161805|text|只需将xml代码中的android:backgroundTint更改为您的颜色|type|unstyled|depth|inlineStyleRanges|entityRanges|data|161806|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Simply change android:backgroundTint in xml code to your color

I would like to change the blue colour below the edit text, i don't know what property it is. 

I tried using a different background colour for it but it didn't work.

I've attached an image below:

<img src="https://i.stack.imgur.com/ypsXX.png" alt="enter image description here">

EditText underline below text property

Android

我想更改编辑文本下面的蓝色，我不知道它是什么属性。我试着使用不同的背景颜色，但它不起作用。下面我附上了一张图片：​​

问文本属性下的EditText下划线
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