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POfindViewById returns null for radioGroup but finds the radioButtons?
 

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  1. POfindViewById returns null for radioGroup but finds the radioButtons?
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    <p>I have an Activity that does the following </p> <pre><code>Button distanceSort = (Button) findViewById(R.id.distanceSortButton); Button waitTimeSort = (Button) findViewById(R.id.waitTimeSortButton); Button nameSort = (Button) findViewById(R.id.nameSortButton); Button mapButton = (Button) findViewById(R.id.locationsMapButton); Button dashboardButton = (Button)findViewById(R.id.dashboardButton); RadioGroup sortingGroup = (RadioGroup)findViewById(R.id.sortingRadioGroup); </code></pre> <p>and the xml is this</p> <pre><code>&lt;RadioGroup xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/sortingRadioGroup" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/headerBar" android:layout_centerHorizontal="true" android:checkedButton="@+id/distanceSortButton" android:orientation="horizontal" &gt; &lt;RadioButton android:id="@id/distanceSortButton" style="@style/tabText" android:layout_weight="1" android:background="@drawable/radio_group_selector" android:button="@null" android:checked="true" android:gravity="center" android:text="@string/distance_sort_button" /&gt; &lt;View android:layout_width="1dp" android:layout_height="48dp" android:background="@drawable/tab_separator" /&gt; &lt;RadioButton android:id="@+id/waitTimeSortButton" style="@style/tabText" android:layout_weight="1" android:background="@drawable/radio_group_selector" android:button="@null" android:gravity="center" android:text="@string/wait_time_sort_button" /&gt; &lt;View android:layout_width="1dp" android:layout_height="48dp" android:background="#464646" /&gt; &lt;RadioButton android:id="@+id/nameSortButton" style="@style/tabText" android:layout_weight="1" android:background="@drawable/radio_group_selector" android:button="@null" android:gravity="center" android:text="@string/name_sort_button" /&gt; &lt;/RadioGroup&gt; </code></pre> <p>What my problem is that all the buttons are found, but the radio group always returns null. I want to use that RadioGroup to find out which button has been checked. Doesn't make sense to me that the buttons inside radio group can be found but the RadioGroup itself cant' be?</p>
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    1. USQuinnVT
    1. USQuinnVT
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    1. COAre you sure it's not `distanceSortButton` returning null? You have `@id/distanceSortButton` which it should be `@+id/distanceSortButton`.
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      1. POfindViewById returns null for radioGroup but finds the radioButtons?
      1. USDeeV
    2. COyes. the declaration for distanceSortButton is in the radioGroup tag= `android:checkedButton="@+id/distanceSortButton"`
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      1. POfindViewById returns null for radioGroup but finds the radioButtons?
      1. USQuinnVT
    3. COI take it this is all part of a RelativeLayout? Also, I don't see it here, but do you have a closing for the RadioGroup item? Should be at the bottom, and I don't see it!
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      1. POfindViewById returns null for radioGroup but finds the radioButtons?
      1. UStrumpetlicks
 

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