Android RadiGroup allows multiple selection
Android API level 24 (emulator) seems to allow multiple options if I preselect multiple RadioButtons initially. I just want to know if this is a bug or not?
Here is the layout file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<RadioGroup
android:id="@+id/radioGroup"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/metal"
android:checked="true"/>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/classical"
android:checked="true"/>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/jazz"/>
</RadioGroup>
</LinearLayout>
The application starts as follows:
And if I hit Jazz, it goes something like this:
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Your layout is missing android:id
values for widgets RadioButton
. This might work as long as you don't start with any of these pre-checked in the layout resource. If you are going to use android:checked
in a layout resource, you need to assign widget ids to widgets RadioButton
. This is a long-standing problem that is unlikely to change, which is why "it's just one of those things" that we have to deal with in Android application development.
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