Failed to load or instantiate

Failed to load or instantiate：

 

?

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add this code in your xml:   xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:imagecontrol="http://schemas.android.com/apk/res-auto"   like this:   <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     xmlns:imagecontrol="http://schemas.android.com/apk/res-auto"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:orientation="vertical" >