This provides the means to replace the assist icon shown in keyguard and the
navigation gesture for assist. It's done by adding metadata called
"com.android.systemui.action_assist_icon" to the activity that handles
android.intent.action.ASSIST. It should point to a StateListDrawable
in that package with the required states. For example:
<meta-data android:name="com.android.systemui.action_assist_icon"
android:resource="@drawable/ic_android_systemui_action_assist" />
And then something like this in drawable/ic_android_systemui_action_assist.xml :
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="true"
android:state_active="false"
android:state_focused="false"
android:drawable="@drawable/ic_action_assist_normal" />
<item android:state_enabled="true"
android:state_active="true"
android:state_focused="false"
android:drawable="@drawable/ic_action_assist_activated" />
<item android:state_enabled="true"
android:state_active="false"
android:state_focused="true"
android:drawable="@drawable/ic_action_assist_focused" />
</selector>
Change-Id: Ibc29360e179fed68253ff06a07b1bb2b982d0dab