How to decrease the size of image displayed on radio button in android without using new image

问题

I have designed an activity in which i have two radio button but those size are more than enough i want to decrease it i am using text size that decreases only text if layout size is decrease that decrease only view not radio button circle

<RadioGroup
        android:id="@+id/RG1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <RadioButton
            android:id="@+id/N"
            android:layout_width="wrap_content"
            android:layout_height="30dip"
            android:text="Yes"
            android:textSize="12dip" />

        <RadioButton
            android:id="@+id/Y"
            android:layout_width="wrap_content"
            android:layout_height="30dip"
            android:checked="true"
            android:text="No"
            android:textSize="12dip" />
    </RadioGroup>

回答1:

For this you can use a Selector

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/1" 
    android:state_pressed="true"/>  
<item android:drawable="@drawable/2" 
    android:state_checked="true"/>  
<item android:drawable="@drawable/3" 
    android:state_focused="true" />
<item android:drawable="@drawable/4" />  
</selector> 

and in the radiobutton tag you can add

android:button="@drawable/above"
android:layout_height="20dp"
android:layout_width="wrap_content"

Hope it helpe. You might also want to have a look at this link

回答2:

I think this link may be useful for you : Android: How to change the Size of the RadioButton

You probably force to use another picture as their background

回答3:

this code work for me!

button.getCompoundDrawables();
compoundDrawables[1].setBounds(10, 10, 90, 90);

回答4:

The correct way is to use your custom drawables for radio button's state. To decrease the image size for custom drawables check THIS out.

回答5:

visit this page http://android-holo-colors.com/ , select Radio and download the output resources (zip file contains a "res" folder), That contains all images for all posible radio button states, replace images with your custom but keeping the size of the download files. If you think it has too much states simply erase from selector in xml drawable theme.

来源：https://stackoverflow.com/questions/9747773/how-to-decrease-the-size-of-image-displayed-on-radio-button-in-android-without-u