blocks|key|267592|text|这不是填充，而是背景可绘制按钮周围的阴影。创建你自己的背景，它就会消失。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|267593|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|$]]

That's not padding, it's the shadow around the button in its background drawable. Create your own background and it will disappear.

blocks|key|267618|text|一种解决方法可能是尝试使用-ve值作为边距，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|267619|<Button
++++android:id="@%2Bid/button_back"
++++android:layout_width="fill_parent"
++++android:layout_height="wrap_content"
++++android:onClick="CloseActivity"
++++android:padding="0dp"
++++android:layout_marginLeft="-5dip"
++++android:layout_marginRight="-5dip"
++++android:layout_marginTop="-5dip"
++++android:layout_marginBottom="-5dip"
++++android:text="@string/back"+/>|code-block|syntax|javascript|267620|它会让那个空间消失。我的意思是，您可以选择适当的dip值，这样它就会消失。这对我很管用。希望它能为你工作。|267621|entityMap^0|D|3|0|0|O|3|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

A workaround may be to try to use <code>-ve</code> values for margins like following:

<pre><code>&lt;Button
 android:id="@+id/button_back"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:onClick="CloseActivity"
 android:padding="0dp"
 android:layout_marginLeft="-5dip"
 android:layout_marginRight="-5dip"
 android:layout_marginTop="-5dip"
 android:layout_marginBottom="-5dip"
 android:text="@string/back" /&gt;
</code></pre>

It will make that space vanish. I mean you can choose the appropriate <code>dip</code> value, which makes it go away. It worked for me. Hope it works for you.

blocks|key|51122|text|我是android的新手，但我也遇到过类似的情况。我按照@Delyan的建议做了，并在xml布局文件中使用了android:background="@null“。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|51123|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|$]]

I am new to android but I had a similar situation. I did what @Delyan suggested and also used android:background="@null" in the xml layout file.

blocks|key|267690|text|对我来说，问题是一些安卓主题上的minHeight和minWidth。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|267691|在Button元素上，添加：|267692|<Button+android:minHeight="0dp"+android:minWidth="0dp"+...|code-block|syntax|javascript|267693|或者使用您的按钮的样式：|267694|<item+name="android:minHeight">0dp</item>
<item+name="android:minWidth">0dp</item>|267695|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

For me the problem turned out to be minHeight and minWidth on some of the Android themes.

On the Button element, add:

<pre><code>&lt;Button android:minHeight="0dp" android:minWidth="0dp" ...
</code></pre>

Or in your button's style:

<pre><code>&lt;item name="android:minHeight"&gt;0dp&lt;/item&gt;
&lt;item name="android:minWidth"&gt;0dp&lt;/item&gt;
</code></pre>

blocks|key|51200|text|在按钮的XML集合android:includeFontPadding="false"中|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|51201|entityMap^0|9|Y|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|$]]

In the button's XML set <code>android:includeFontPadding="false"</code>

blocks|key|51245|text|为了删除周围的填充切换按钮，我们需要设置minWidth和minHeight+0dp.android:minWidth="0dp"+android:minHeight="0dp"|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|51246|++<ToggleButton
++++++++android:id="@%2Bid/toggle_row_notifications"
++++++++android:layout_width="wrap_content"
++++++++android:layout_height="wrap_content"
++++++++android:minWidth="0dp"
++++++++android:minHeight="0dp"
++++++++android:layout_alignParentRight="true"
++++++++android:layout_centerVertical="true"
++++++++android:padding="@dimen/_5sdp"
++++++++android:textOn=""
++++++++android:textOff=""
++++++++android:background="@android:color/transparent"
++++++++android:button="@drawable/toggle_selector"
++++++++/>|code-block|syntax|javascript|51247|将可绘制文件设置为按钮属性，如下所示：android:button="@drawable/toggle_selector"|51248|下面是我的toggle_selecter.xml文件|51249|<?xml+version="1.0"+encoding="utf-8"?>
+++++<selector+xmlns:android="http://schemas.android.com/apk/res/android">
++++++++++++<item+android:drawable="@drawable/notifications_toggle_on"+
++++++++++++++++++android:state_checked="true"/>
++++++++++++<item+android:drawable="@drawable/notifications_toggle_off"+
++++++++++++++++++android:state_checked="false"/>
+++++</selector>|51250|entityMap^0|17|1A|0|0|J|16|0|5|J|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|O|3|P|5|H|7|12|8|@]|D|@]|E|$I|J]]|$1|Q|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|R|$]]

For removing padding around toggle button we need set minWidth and minHeight 0dp.<code>android:minWidth="0dp" android:minHeight="0dp"</code>

<pre><code> &lt;ToggleButton
 android:id="@+id/toggle_row_notifications"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:minWidth="0dp"
 android:minHeight="0dp"
 android:layout_alignParentRight="true"
 android:layout_centerVertical="true"
 android:padding="@dimen/_5sdp"
 android:textOn=""
 android:textOff=""
 android:background="@android:color/transparent"
 android:button="@drawable/toggle_selector"
 /&gt;
</code></pre>

set your drawable file to button attribute like: <code>android:button="@drawable/toggle_selector"</code>

Below is my <code>toggle_selecter.xml</code> file

<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:drawable="@drawable/notifications_toggle_on" 
 android:state_checked="true"/&gt;
 &lt;item android:drawable="@drawable/notifications_toggle_off" 
 android:state_checked="false"/&gt;
 &lt;/selector&gt;
</code></pre>

blocks|key|267829|text|这不是填充，而是背景的阴影，可绘制的，或者是minHeight和minWidth的问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|267830|如果您仍然想要漂亮的波纹效果，您可以使用?attr/selectableItemBackground创建自己的按钮样式|267831|<style+name="Widget.AppTheme.MyCustomButton"+parent="Widget.AppCompat.Button.Borderless">
++++<item+name="android:minHeight">0dp</item>
++++<item+name="android:minWidth">0dp</item>
++++<item+name="android:layout_height">48dp</item>
++++<item+name="android:background">?attr/selectableItemBackground</item>
</style>|code-block|syntax|javascript|267832|并将其应用于按钮：|267833|<Button+
++++style="@style/Widget.AppTheme.MyCustomButton"
++++...+/>|267834|entityMap^0|M|9|W|8|0|K|U|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|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|R|$]]

It's not a padding but or the shadow of the background drawable or a problem with the <code>minHeight</code> and <code>minWidth</code>.

If you still want the nice ripple affect, you can make your own button style using the <code>?attr/selectableItemBackground</code>:

<pre><code>&lt;style name="Widget.AppTheme.MyCustomButton" parent="Widget.AppCompat.Button.Borderless"&gt;
 &lt;item name="android:minHeight"&gt;0dp&lt;/item&gt;
 &lt;item name="android:minWidth"&gt;0dp&lt;/item&gt;
 &lt;item name="android:layout_height"&gt;48dp&lt;/item&gt;
 &lt;item name="android:background"&gt;?attr/selectableItemBackground&lt;/item&gt;
&lt;/style&gt;
</code></pre>

And apply it to the button:

<pre><code>&lt;Button 
 style="@style/Widget.AppTheme.MyCustomButton"
 ... /&gt;
</code></pre>

blocks|key|267889|text|为按钮提供自定义背景：@drawable/material_btn_blue|type|unstyled|depth|inlineStyleRanges|entityRanges|data|267890|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|$]]

Give your button a custom background: @drawable/material_btn_blue

blocks|key|267947|text|您也可以使用layout_width(height)参数来执行此操作。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|267948|例如，我用android:layout_height="18dp"代码删除了顶部和底部的空格。|267949|entityMap^0|6|K|0|5|S|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

You can also do it with <code>layout_width(height)</code> parameters. 

E.g. I have deleted top and bottom space with <code>android:layout_height="18dp"</code> code.

blocks|key|51518|text|我的解决方案是将insetTop和insetBottom属性设置为0。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|51519|<android.support.design.button.MaterialButton
++++++++android:layout_width="match_parent"
++++++++android:layout_height="wrap_content"
++++++++android:insetTop="0dp"
++++++++android:insetBottom="0dp"
++++++++android:text="@string/view_video"
++++++++android:textColor="@color/white"/>|code-block|syntax|javascript|51520|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|$]]

My solution was set to 0 the insetTop and insetBottom properties.

<pre><code>&lt;android.support.design.button.MaterialButton
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:insetTop="0dp"
 android:insetBottom="0dp"
 android:text="@string/view_video"
 android:textColor="@color/white"/&gt;
</code></pre>

blocks|key|268095|text|经过几个小时对多个答案的挖掘，我终于找到了一个解决方案，它不使用不同的元素，不操纵minHeight或minWidth，甚至不用RelativeLayout包装Button。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|268096|<Button
++++android:foreground="?attr/selectableItemBackground"
++++android:background="@color/whatever"+/>|code-block|syntax|javascript|268097|这里的主要内容是前景的设置，而不是许多答案所规定的背景。将背景本身更改为selectableItemBackground只会覆盖您对按钮的颜色/背景所做的任何更改。|268098|改变前景会给你带来两全其美的效果:去掉“看不见的”填充，保留按钮的设计。|268099|entityMap^0|15|9|1F|8|1S|E|28|6|0|0|10|O|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|P|$]]

After hours of digging around multiple answers I finally found a solution that doesn't use a different element, manipulate <code>minHeight</code> or <code>minWidth</code>, or even wrapping <code>Button</code> around a <code>RelativeLayout</code>. 

<pre><code>&lt;Button
 android:foreground="?attr/selectableItemBackground"
 android:background="@color/whatever" /&gt;
</code></pre>

The main takeaway here is the setting of the foreground instead of background as many of the answers stipulate. Changing the background itself to <code>selectableItemBackground</code> will just overwrite any changes you made to the button's color/background, if any. 

Changing the foreground gives you the best of both worlds: get rid of the "invisible" padding and retain your button's design.

blocks|key|51678|text|删除顶部和底部填充的步骤|type|unstyled|depth|inlineStyleRanges|entityRanges|data|51679|<com.google.android.material.button.MaterialButton
++++++++android:layout_width="wrap_content"
++++++++android:layout_height="wrap_content"
++++++++android:minHeight="0dp"//to+effect+the+following+parameters,+this+must+be+added!
++++++++android:insetTop="0dp"
++++++++android:insetBottom="0dp"/>|code-block|syntax|javascript|51680|删除左侧和右侧填充的步骤|51681|<com.google.android.material.button.MaterialButton
++++++++android:layout_width="wrap_content"
++++++++android:layout_height="wrap_content"
++++++++android:minWidth="0dp"//to+effect+the+following+parameters,+this+must+be+added!
++++++++android:insetLeft="0dp"
++++++++android:insetRight="0dp"/>|51682|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

To remove the Top and Bottom padding

<pre><code>&lt;com.google.android.material.button.MaterialButton
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:minHeight="0dp"//to effect the following parameters, this must be added!
 android:insetTop="0dp"
 android:insetBottom="0dp"/&gt;
</code></pre>

To remove the Left and Right padding

<pre><code>&lt;com.google.android.material.button.MaterialButton
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:minWidth="0dp"//to effect the following parameters, this must be added!
 android:insetLeft="0dp"
 android:insetRight="0dp"/&gt;
</code></pre>

blocks|key|268160|text|对于MaterialButton，添加下面的属性，它将完美地工作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|268161|<android.support.design.button.MaterialButton
++++android:layout_width="wrap_content"
++++android:layout_height="wrap_content"
++++android:insetTop="0dp"
++++android:insetBottom="0dp"/>|code-block|syntax|javascript|268162|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|$]]

for MaterialButton, add below properties, it will work perfectly
<pre><code>&lt;android.support.design.button.MaterialButton
 android:layout_width=&quot;wrap_content&quot;
 android:layout_height=&quot;wrap_content&quot;
 android:insetTop=&quot;0dp&quot;
 android:insetBottom=&quot;0dp&quot;/&gt;
</code></pre>

blocks|key|268173|text|对于<androidx.appcompat.widget.AppCompatButton>|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|268174|+++++++++++<androidx.appcompat.widget.AppCompatButton
++++++++++++++++.
++++++++++++++++.
++++++++++++++++android:minHeight="0dp"
++++++++++++++++android:minWidth="0dp"+
+++++++++++++++>

++++++++++++</androidx.appcompat.widget.AppCompatButton>|code-block|syntax|javascript|268175|entityMap^0|2|17|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|$]]

For <code>&lt;androidx.appcompat.widget.AppCompatButton&gt;</code>
<pre><code> &lt;androidx.appcompat.widget.AppCompatButton
 .
 .
 android:minHeight=&quot;0dp&quot;
 android:minWidth=&quot;0dp&quot; 
 &gt;

 &lt;/androidx.appcompat.widget.AppCompatButton&gt;
</code></pre>

blocks|key|268198|text|要通过编程删除AppCompatButton填充，请执行以下操作：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|268199|button.setPadding(0,+0,+0,+0)
button.minHeight+=+0
button.minimumHeight+=+0|code-block|syntax|javascript|268200|entityMap^0|7|F|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|$]]

To remove <code>AppCompatButton</code> paddings programmatically:
<pre><code>button.setPadding(0, 0, 0, 0)
button.minHeight = 0
button.minimumHeight = 0
</code></pre>

blocks|key|51789|text|您可以通过将其inset设置为零来实现这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|51790|android:insetBottom="0dp"
android:insetTop="0dp"|code-block|syntax|javascript|51791|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|$]]

You can achieve this by setting its inset to zero.
<pre><code>android:insetBottom=&quot;0dp&quot;
android:insetTop=&quot;0dp&quot;
</code></pre>

In my Android app, I have this layout:

<pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; 
&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:orientation="vertical"&gt;

 &lt;fragment
 android:id="@+id/map"
 android:layout_width="match_parent"
 android:layout_height="0dp" 
 android:layout_weight="1" 
 class="com.google.android.gms.maps.SupportMapFragment"/&gt;

 &lt;Button
 android:id="@+id/button_back"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:onClick="CloseActivity"
 android:padding="0dp"
 android:text="@+string/back" /&gt;

&lt;/LinearLayout&gt;
</code></pre>

In the preview and on the phone, it looks like:

<img src="https://i.stack.imgur.com/6VZqB.png" alt="">

As you can see on the button in the bottom area, there is some padding there.

How can I get rid of that, and let the button fully fill the bottom area?

How to remove padding around buttons in Android?

Android

在我的Android应用程序中，我有这样的布局：<?xml version="1.0" encoding="utf-8" ?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_wi...

问如何在Android中删除按钮周围的填充？
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问如何在Android中删除按钮周围的填充？
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