Android一改主题就报错

Question

学校里作业，要求我们创建一个HelloAndroid然后主题改成android:theme="@android:style/Theme.Holo"，可是我一改进去运行就stop，别的人都没问题，我们的AndroidManifest.xml也是一样的

Answer 1

android:theme="@android:style/Theme.Holo"
Theme.Holo试着换一个名字，不要加特殊符号

Answer 2

什么意思，改成Theme.Black还是没用

Answer 3

什么意思，改成Theme.Black还是没用
Clean一下重新编译试试

Answer 4

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: hello.cslg.edu.cn.helloandroid, PID: 5761
                  java.lang.RuntimeException: Unable to start activity ComponentInfo{hello.cslg.edu.cn.helloandroid/hello.cslg.edu.cn.helloandroid.HelloActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
                      at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
                      at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
                      at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
                      at android.os.Handler.dispatchMessage(Handler.java:106)
                      at android.os.Looper.loop(Looper.java:193)
                      at android.app.ActivityThread.main(ActivityThread.java:6669)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
                   Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
                      at android.support.v7.app.AppCompatDelegateImplV9.createSubDecor(AppCompatDelegateImplV9.java:354)
                      at android.support.v7.app.AppCompatDelegateImplV9.ensureSubDecor(AppCompatDelegateImplV9.java:323)
                      at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:284)
                      at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
                      at hello.cslg.edu.cn.helloandroid.HelloActivity.onCreate(HelloActivity.java:11)
                      at android.app.Activity.performCreate(Activity.java:7136)
                      at android.app.Activity.performCreate(Activity.java:7127)
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) 
                      at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
                      at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
                      at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
                      at android.os.Handler.dispatchMessage(Handler.java:106) 
                      at android.os.Looper.loop(Looper.java:193) 
                      at android.app.ActivityThread.main(ActivityThread.java:6669) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 
Application terminated.
这个吗

Answer 5

You need to use a Theme.AppCompat theme (or descendant) with this activity.

Answer 6

You need to use a Theme.AppCompat theme (or descendant) with this activity. 
要怎么改这不是告诉你了吗，要学会看崩溃信息啊，还要学会自己百度啊  https://blog.csdn.net/ouyang_peng/article/details/51334761 看人家博客都写得这么清晰了 

Answer 7

把你的activity改成继承Activity，不要继承AppCompatActivity