How to remove unwanted spaces at the right of CheckBox?

user_767987 0
Viewed 20472

I am working on a custom list view. I want to show a CheckBox at the custom view. There is no text for the CheckBox. I found it always have some spaces at the right of the CheckBox.

Here is my layout xml file:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:orientation="horizontal" android:background="#fa9654"
android:paddingTop="65dp" android:paddingBottom="65dp">



<TextView android:id="@+id/bus_route_list_item_num"
    android:layout_height="wrap_content" android:layout_width="0dip"
    android:gravity="center" android:layout_gravity="center_vertical|center_horizontal"
    android:layout_weight="0.15"></TextView>

<TextView android:id="@+id/bus_route_list_item_station"
    android:layout_height="wrap_content" android:layout_width="0dip"
    android:gravity="left" android:layout_gravity="center_vertical|center_horizontal"
    android:layout_weight=".5"></TextView>


<TextView android:id="@+id/bus_route_list_item_fee"
    android:layout_height="wrap_content" android:layout_width="0dip"
    android:gravity="center" android:layout_gravity="center_vertical|center_horizontal"
    android:layout_weight=".15"></TextView>


<CheckBox android:id="@+id/bus_route_list_item_reminder" android:layout_height="wrap_content" 
    android:layout_width="0dip" android:layout_weight=".20" android:gravity="center" 
    android:layout_gravity="center" android:paddingRight="0dp" android:paddingLeft="0dp" 
    android:paddingTop="0dp" android:paddingBottom="0dp" android:background="#0066ff" 
    android:text=""
/>

</LinearLayout>

The result looks like:

Checkbox result

As you can see there are some space at the right of the checkbox. What I want is put the checkbox at the middle of the blue area.

Is it possible to remove the unwanted space? thanks

material-design android-layout padding checkbox android
6 Answers

by default, the Checkbox has minWidth and minHeight value

enter image description here

you can set its value to 0

<CheckBox
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:minWidth="0dp"
    android:minHeight="0dp" />

The result will be like that without any extra spaces

enter image description here

user_108622230

The translationX seems to work. But it causes problem if you want to support RTL layouts. Another solution would be to set the width of checkbox to a fixed length (e.g. 26dp):

<CheckBox
    android:layout_width="26dp"
    android:layout_height="wrap_content"
    android:text="@null" />
user_85836920

To remove extra space at right of the image (when there is no text) extend CheckBox class and override getSuggestedMinimumWidth() method in order to return there image width. Complete solution:

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.CheckBox;

public class CheckBoxWithoutText extends CheckBox
{
    private Drawable buttonDrawable;

    public CheckBoxWithoutText(Context context)
    {
        super(context);
    }

    public CheckBoxWithoutText(Context context, AttributeSet attrs)
    {
        super(context, attrs);
    }

    @Override
    protected int getSuggestedMinimumWidth()
    {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
        {
            return getCompoundPaddingLeft() + getCompoundPaddingRight();
        }
        else
        {
            return buttonDrawable == null ? 0 : buttonDrawable.getIntrinsicWidth();
        }
    }

    @Override
    public void setButtonDrawable(Drawable d)
    {
        buttonDrawable = d;
        super.setButtonDrawable(d);
    }
}
user_7791400
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