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POAndroid 4.2: IllegalstateException: One or more children of this LayerDrawable does not have constant state
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  1. POAndroid 4.2: IllegalstateException: One or more children of this LayerDrawable does not have constant state
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    copied!<p>Since the new update from Android 4.1 to 4.2 on my smartphone, my app throws an exception, when it initializes a ViewPager and its Activities.</p> <p><strong>The Exception:</strong> </p> <p>java.lang.IllegalStateException: One or more children of this LayerDrawable does not have constant state; this drawable cannot be mutated.</p> <p><strong>The StackTrace:</strong></p> <pre><code>java.lang.RuntimeException: Unable to start activity ComponentInfo{imatuve.info/imatuve.news.NewsTabActivity}: android.view.InflateException: Binary XML file line #3: Error inflating class &lt;unknown&gt; at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) at android.app.ActivityThread.access$600(ActivityThread.java:141) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5039) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) at dalvik.system.NativeStart.main(Native Method)Caused by: android.view.InflateException: Binary XML file line #3: Error inflating class &lt;unknown&gt; at android.view.LayoutInflater.createView(LayoutInflater.java:613) at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) at android.view.LayoutInflater.onCreateView(LayoutInflater.java:660) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685) at android.view.LayoutInflater.inflate(LayoutInflater.java:466) at android.view.LayoutInflater.inflate(LayoutInflater.java:396) at android.view.LayoutInflater.inflate(LayoutInflater.java:352) at imatuve.news.NewsTabActivity.createTabView(NewsTabActivity.java:313) at imatuve.news.NewsTabActivity.initialiseTabHost(NewsTabActivity.java:261) at imatuve.news.NewsTabActivity.onCreate(NewsTabActivity.java:96) at android.app.Activity.performCreate(Activity.java:5104) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) ... 11 more Caused by: java.lang.reflect.InvocationTargetException at java.lang.reflect.Constructor.constructNative(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:417) at android.view.LayoutInflater.createView(LayoutInflater.java:587) ... 23 more Caused by: android.content.res.Resources$NotFoundException: File res/drawable/tab_bg_selector.xml from drawable resource ID #0x7f020065 at android.content.res.Resources.loadDrawable(Resources.java:1953) at android.content.res.TypedArray.getDrawable(TypedArray.java:601) at android.view.View.&lt;init&gt;(View.java:3328) at android.view.View.&lt;init&gt;(View.java:3257) at android.view.ViewGroup.&lt;init&gt;(ViewGroup.java:425) at android.widget.RelativeLayout.&lt;init&gt;(RelativeLayout.java:210) ... 26 more Caused by: java.lang.IllegalStateException: One or more children of this LayerDrawable does not have constant state; this drawable cannot be mutated. at android.graphics.drawable.LayerDrawable.mutate(LayerDrawable.java:579) at android.graphics.drawable.DrawableContainer.selectDrawable(DrawableContainer.java:315) at android.graphics.drawable.StateListDrawable.onStateChange(StateListDrawable.java:106) at android.graphics.drawable.StateListDrawable.inflate(StateListDrawable.java:189) at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:885) at android.graphics.drawable.Drawable.createFromXml(Drawable.java:822) at android.content.res.Resources.loadDrawable(Resources.java:1950) ... 31 more </code></pre> <p><strong>The Code:</strong></p> <pre><code>private static View createTabView(final Context context, final String tag) { //The exception comes when inflating the view View view = LayoutInflater.from(context).inflate(R.layout.tabs_bg, null); TextView tv = (TextView)view.findViewById(R.id.tabsText); tv.setText(tag); return view; } </code></pre> <p><strong>tab_bg_selector.xml:</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; </code></pre> <p></p> <pre><code>&lt;!-- Active tab --&gt; &lt;item android:state_selected="true" android:state_focused="false" android:state_pressed="false" android:drawable="@drawable/tab_bg_selected" /&gt; &lt;!-- Inactive tab --&gt; &lt;item android:state_selected="false" android:state_focused="false" android:state_pressed="false" android:drawable="@drawable/tab_bg_unselected" /&gt; &lt;!-- Pressed tab --&gt; &lt;item android:state_pressed="true" android:drawable="@drawable/tab_bg_pressed" /&gt; &lt;!-- Selected tab --&gt; &lt;item android:state_focused="true" android:state_selected="true" android:state_pressed="false" android:drawable="@color/transparent" /&gt; </code></pre> <p> </p> <p><strong>tab_pg_pressed.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android" &gt; &lt;item android:bottom="8dp" android:top="63dp"&gt; &lt;shape android:shape="rectangle" &gt; &lt;solid android:color="#70c0e7fd" /&gt; &lt;/shape&gt; &lt;/item&gt; &lt;!-- mask out the bottom line of the tab shape --&gt; &lt;item android:left="15dp" android:right="15dp" android:top="63dp"&gt; &lt;shape android:shape="rectangle" &gt; &lt;corners android:bottomLeftRadius="0dp" android:bottomRightRadius="0dp" android:topLeftRadius="3dp" android:topRightRadius="3dp" /&gt; &lt;solid android:color="#70c0e7fd" /&gt; &lt;/shape&gt; &lt;/item&gt; </code></pre> <p></p> <p><strong>tab_bg_selected.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android" &gt; &lt;item android:bottom="8dp" android:top="63dp"&gt; &lt;shape android:shape="rectangle" &gt; &lt;solid android:color="#ffc0e7fd" /&gt; &lt;/shape&gt; &lt;/item&gt; &lt;!-- mask out the bottom line of the tab shape --&gt; &lt;item android:left="15dp" android:right="15dp" android:top="63dp"&gt; &lt;shape android:shape="rectangle" &gt; &lt;corners android:bottomLeftRadius="0dp" android:bottomRightRadius="0dp" android:topLeftRadius="3dp" android:topRightRadius="3dp" /&gt; &lt;solid android:color="#ffc0e7fd" /&gt; &lt;/shape&gt; &lt;/item&gt; </code></pre> <p></p> <p><strong>tab_bg_unselected.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android" &gt; &lt;/layer-list&gt; </code></pre> <p>The "tabs_bg" layout exists in my layout folder, just like the res/drawable/tab_bg_selector.xml.</p> <p>On a Android 4.1 OS or lower this exception doesn't occur. What can this be and how do I get rid of it?</p>
 

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