How to remove button shadow (android)

问题:

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

I have this right now:

But I want this:

回答1:

Another alternative is to add

style="?android:attr/borderlessButtonStyle"

to your Button xml as documented here http://developer.android.com/guide/topics/ui/controls/button.html

An example would be

<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" />

回答2:

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

android:stateListAnimator="@null"

though it requires API level 21 or more..

回答3:

I use a custom style

<style name="MyButtonStyle" parent="@style/Widget.AppCompat.Button.Borderless"></style>

回答4:

Java

setStateListAnimator(null);

---

XML

android:stateListAnimator="@null"

回答5:

try : android:stateListAnimator="@null"

回答6:

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

<?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>

回答7:

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.

    public CustomButton(Context context, AttributeSet attrs) {
        this(context, attrs, R.attr.borderlessButtonStyle);
    }

回答8:

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:

<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" />

in the activity java file:

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

回答9:

android:theme="@android:style/Theme.NoTitleBar"

Adding this to your activity also can help you.

回答10:

for material desing buttons add to button xml style="@style/Widget.MaterialComponents.Button.UnelevatedButton"