blocks|key|22993|text|另一种方法是添加|type|unstyled|depth|inlineStyleRanges|entityRanges|data|22994|style="?android:attr/borderlessButtonStyle"|code-block|syntax|javascript|22995|添加到此处http://developer.android.com/guide/topics/ui/controls/button.html文档中的Button+xml|offset|length|22996|一个例子就是|22997|<Button
android:id="@%2Bid/button_send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/button_send"
android:onClick="sendMessage"
style="?android:attr/borderlessButtonStyle"+/>|22998|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/guide/topics/ui/controls/button.html^0|0|0|5|1T|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@$I|Z|J|10|1|11]]|A|$]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

Another alternative is to add

<pre><code>style="?android:attr/borderlessButtonStyle"
</code></pre>

to your Button xml as documented here 
<a href="http://developer.android.com/guide/topics/ui/controls/button.html" rel="noreferrer">http://developer.android.com/guide/topics/ui/controls/button.html</a>

An example would be

<pre><code>&lt;Button
android:id="@+id/button_send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/button_send"
android:onClick="sendMessage"
style="?android:attr/borderlessButtonStyle" /&gt;
</code></pre>

blocks|key|4530712|text|一种更简单的方法是将此标记添加到按钮：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4530713|android:stateListAnimator="@null"|code-block|syntax|javascript|4530714|尽管它需要API级别21或更高级别..|4530715|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|$]]

A simpler way to do is adding this tag to your button:

<pre><code>android:stateListAnimator="@null"
</code></pre>

though it requires API level 21 or more..

blocks|key|23077|text|我使用自定义样式|type|unstyled|depth|inlineStyleRanges|entityRanges|data|23078|<style+name="MyButtonStyle"+parent="@style/Widget.AppCompat.Button.Borderless"></style>|code-block|syntax|javascript|23079|别忘了添加|23080|<item+name="android:textAllCaps">false</item>|23081|否则，按钮文本将为UpperCase格式。|23082|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I use a custom style

<pre><code>&lt;style name="MyButtonStyle" parent="@style/Widget.AppCompat.Button.Borderless"&gt;&lt;/style&gt;
</code></pre>

Don't forget to add

<pre><code>&lt;item name="android:textAllCaps"&gt;false&lt;/item&gt;
</code></pre>

otherwise the button text will be in UpperCase.

blocks|key|23322|text|物料设计按钮添加到按钮xml：style="@style/Widget.MaterialComponents.Button.UnelevatedButton"|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|23323|entityMap^0|F|1S|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Material desing buttons add to button xml:
 <code>style="@style/Widget.MaterialComponents.Button.UnelevatedButton"</code>

blocks|key|4530656|text|尝试：android:stateListAnimator="@null"|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4530657|entityMap^0|3|X|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

try : <code>android:stateListAnimator="@null"</code>

blocks|key|22967|text|将其用作按钮的背景可能会有所帮助，请根据需要更改颜色|type|unstyled|depth|inlineStyleRanges|entityRanges|data|22968|<?xml+version="1.0"+encoding="utf-8"+?>
<selector+xmlns:android="http://schemas.android.com/apk/res/android">
++++<item+android:state_pressed="true"+>
++++++++<shape+android:shape="rectangle">
++++++++++++<solid+android:color="@color/app_theme_light"+/>
++++++++++++<padding
++++++++++++++++android:left="8dp"
++++++++++++++++android:top="4dp"
++++++++++++++++android:right="8dp"
++++++++++++++++android:bottom="4dp"+/>
++++++++</shape>
++++</item>
++++<item>
++++++++<shape+android:shape="rectangle">
++++++++++++<solid+android:color="@color/app_theme_dark"+/>
++++++++++++<padding
++++++++++++++++android:left="8dp"
++++++++++++++++android:top="4dp"
++++++++++++++++android:right="8dp"
++++++++++++++++android:bottom="4dp"+/>
++++++++</shape>
++++</item>
</selector>|code-block|syntax|javascript|22969|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|$]]

Using this as the background for your button might help, change the color to your needs

<pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt;
&lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt;
 &lt;item android:state_pressed="true" &gt;
 &lt;shape android:shape="rectangle"&gt;
 &lt;solid android:color="@color/app_theme_light" /&gt;
 &lt;padding
 android:left="8dp"
 android:top="4dp"
 android:right="8dp"
 android:bottom="4dp" /&gt;
 &lt;/shape&gt;
 &lt;/item&gt;
 &lt;item&gt;
 &lt;shape android:shape="rectangle"&gt;
 &lt;solid android:color="@color/app_theme_dark" /&gt;
 &lt;padding
 android:left="8dp"
 android:top="4dp"
 android:right="8dp"
 android:bottom="4dp" /&gt;
 &lt;/shape&gt;
 &lt;/item&gt;
&lt;/selector&gt;
</code></pre>

blocks|key|4530929|text|以上所有答案都很好，但我会建议另一个选择：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4530930|<style+name="FlatButtonStyle"+parent="Base.Widget.AppCompat.Button">
+<item+name="android:stateListAnimator">@null</item>
++
</style>|code-block|syntax|javascript|4530931|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|$]]

All above answers are great, but I will suggest an other option:

<pre><code>&lt;style name="FlatButtonStyle" parent="Base.Widget.AppCompat.Button"&gt;
 &lt;item name="android:stateListAnimator"&gt;@null&lt;/item&gt;
 &lt;!-- more style custom here --&gt; 
&lt;/style&gt;


</code></pre>

blocks|key|23201|text|@Alt-Cat答案适用于我！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|23202|R.attr.borderlessButtonStyle不包含卷影。|23203|按钮的文档也很棒。|23204|同样，你也可以在你的自定义按钮上，在第二个构造函数中设置这个样式。|23205|++++public+CustomButton(Context+context,+AttributeSet+attrs)+{
++++++++this(context,+attrs,+R.attr.borderlessButtonStyle);
++++}|code-block|syntax|javascript|23206|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|R|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|S|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

the @Alt-Cat answer work for me!

R.attr.borderlessButtonStyle doesn't contain shadow.

and the document of button is great.

Also, you can set this style on your custom button, in second constructor.

<pre><code> public CustomButton(Context context, AttributeSet attrs) {
 this(context, attrs, R.attr.borderlessButtonStyle);
 }
</code></pre>

blocks|key|4530844|text|您可以使用TextView并在java代码中添加单击侦听器，而不是按钮。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4530845|也就是说。|4530846|在活动布局xml中：|4530847|<TextView
++++android:id="@%2Bid/btn_text_view"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"
++++android:background="@color/colorPrimaryDark"
++++android:text="@string/btn_text"
++++android:gravity="center"
++++android:textColor="@color/colorAccent"
++++android:fontFamily="sans-serif-medium"
++++android:textAllCaps="true"+/>|code-block|syntax|javascript|4530848|在活动java文件中：|4530849|TextView+btnTextView+=+(TextView)+findViewById(R.id.btn_text_view);
btnTextView.setOnClickListener(new+View.OnClickListener()+{
++++++++++++@Override
++++++++++++public+void+onClick(View+v)+{
++++++++++++++++//+handler+code
++++++++++++}
++++++++});|4530850|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|T|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|V|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Instead of a Button, you can use a TextView and add a click listener in the java code.

I.e.

in the activity layout xml:

<pre><code>&lt;TextView
 android:id="@+id/btn_text_view"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:background="@color/colorPrimaryDark"
 android:text="@string/btn_text"
 android:gravity="center"
 android:textColor="@color/colorAccent"
 android:fontFamily="sans-serif-medium"
 android:textAllCaps="true" /&gt;
</code></pre>

in the activity java file:

<pre><code>TextView btnTextView = (TextView) findViewById(R.id.btn_text_view);
btnTextView.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 // handler code
 }
 });
</code></pre>

blocks|key|23383|text|使用自定义按钮；使用样式R.style.Widget_AppCompat_Button_Borderless，Kotlin+way-|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|23384|class+CSButton+@JvmOverloads+constructor(
++++context:+Context,
++++attrs:+AttributeSet?+=+null,
++++defStyleAttr:+Int+=+R.style.Widget_AppCompat_Button_Borderless
)+:+AppCompatButton(context,+attrs,+defStyleAttr)|code-block|syntax|javascript|23385|entityMap^0|C|16|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

With a custom button; use the style <code>R.style.Widget_AppCompat_Button_Borderless</code>, Kotlin way-
<pre><code>class CSButton @JvmOverloads constructor(
 context: Context,
 attrs: AttributeSet? = null,
 defStyleAttr: Int = R.style.Widget_AppCompat_Button_Borderless
) : AppCompatButton(context, attrs, defStyleAttr)
</code></pre>

I want to remove the shadow from the button to make it seem more flat.

I have this right now: 

<img src="https://i.stack.imgur.com/ANKfF.png" alt="cancel button with shadow">

But I want this: 

<img src="https://i.stack.imgur.com/jZfWz.png" alt="cancel button without shadow">

How to remove button shadow (android)

Kotlin

我想去掉按钮上的阴影，使它看起来更平坦。我现在有这样的想法：​​但我想要的是：​​

问如何移除按钮阴影(android)
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回答 10

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问如何移除按钮阴影(android)
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