appcompat-v7 v21.0.0 causing crash on Samsung devices with Android v4.2.2

Question

We just changed our application to use the appcompat-v7 support library in order to take advantage of the support actionbar and support Material themes. Using <

Answer 1

Replace

public class class_name extends AppCompatActivity
{

.........

}

With

public class class_name extends Activity
{

.........

}

This helped me.