最近在玩材质化，

使用CoordinatorLayout的时候出现这个错误，应该也是对android studio的不了解导致的吧

先贴下运行时候错误代码

第一个错误

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.android/com.test.android.ui.activity.RandomActivity}: android.view.InflateException: Binary XML file line #22: Error inflating class android.support.design.widget.CollapsingToolbarLayout
                                                                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
                                                                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
                                                                      at android.app.ActivityThread.access$800(ActivityThread.java:151)
                                                                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
                                                                      at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                      at android.os.Looper.loop(Looper.java:135)
                                                                      at android.app.ActivityThread.main(ActivityThread.java:5254)
                                                                      at java.lang.reflect.Method.invoke(Native Method)
                                                                      at java.lang.reflect.Method.invoke(Method.java:372)
                                                                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
                                                                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
                                                                   Caused by: android.view.InflateException: Binary XML file line #22: Error inflating class android.support.design.widget.CollapsingToolbarLayout
                                                                      at android.view.LayoutInflater.createView(LayoutInflater.java:633)
                                                                      at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
                                                                      at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
                                                                      at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
                                                                      at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
                                                                      at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
                                                                      at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
                                                                      at android.view.LayoutInflater.inflate(LayoutInflater.java:365)

改成下面的一样的就好了

第二个错误就是

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pszh.materialtest/com.pszh.materialtest.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
                      at android.app.ActivityThread.-wrap11(ActivityThread.java)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:148)
                      at android.app.ActivityThread.main(ActivityThread.java:5417)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
                   Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.