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POAndroid: Specify two different images for togglebutton using XML
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  1. POAndroid: Specify two different images for togglebutton using XML
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    copied!<p>I'm attempting to override the default <code>ToggleButton</code> appearance. Here's the XML that defines the <code>ToggleButton</code>:</p> <pre><code>&lt;ToggleButton android:id="@+id/FollowAndCenterButton" android:layout_width="30px" android:layout_height="30px" android:textOn="" android:textOff="" android:layout_alignParentLeft="true" android:layout_marginLeft="5px" android:layout_marginTop="5px" android:background="@drawable/locate_me"/&gt; </code></pre> <p>Now, we have two 30 x 30 icons we want to use for the clicked/non-clicked states. Right now we have code that programmatically changes the background icon depending on the state:</p> <pre><code>centeredOnLocation.setOnClickListener(new OnClickListener() { public void onClick(View v) { if (centeredOnLocation.isChecked()) { centeredOnLocation.setBackgroundDrawable(getResources().getDrawable(R.drawable.locate_me_on)); } else { centeredOnLocation.setBackgroundDrawable(getResources().getDrawable(R.drawable.locate_me)); } } }); </code></pre> <p>Obviously I'm looking for a better way to do this. I've tried to make a selector for the background image, which would automatically switch between the states:</p> <pre><code> &lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt; &lt;item android:drawable="@drawable/locate_me" /&gt; &lt;!-- default --&gt; &lt;item android:state_checked="true" android:drawable="@drawable/locate_me_on" /&gt; &lt;!-- pressed --&gt; &lt;item android:state_checked="false" android:drawable="@drawable/locate_me" /&gt; &lt;!-- unchecked --&gt; </code></pre> <p></p> <p>But this does not work; reading the <code>ToggleButton</code> API (<a href="http://developer.android.com/reference/android/widget/ToggleButton.html" rel="noreferrer">http://developer.android.com/reference/android/widget/ToggleButton.html</a>), it appears that the only inherited xml attributes are</p> <pre><code> XML Attributes Attribute Name Related Method Description android:disabledAlpha The alpha to apply to the indicator when disabled. android:textOff The text for the button when it is not checked. android:textOn The text for the button when it is checked. </code></pre> <p>There does not seem to be the android:state_checked attribute, despite the class having the method <code>isChecked()</code> and <code>setChecked()</code>.</p> <p>So, is there a way to do what I want in XML, or am I stuck with my messy workaround?</p>
 

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