C:\Users\pramod pams\AndroidStudioProjects\LoginRegister3\app\src\main\java\com\pramod\loginregister\firstpage.java
Error:(9, 8) error: cannot access ActivityCompatApi23
class file for android.support.v4.app.ActivityCompatApi23 not found
Error:(12, 5) error: method does not override or implement a method from a supertype
Error:(14, 9) error: cannot find symbol variable super
Error:(15, 9) error: cannot find symbol method setContentView(int)
Error:(17, 39) error: cannot find symbol method findViewById(int)
Error:(18, 38) error: cannot find symbol method findViewById(int)
Error:(22, 53) error: not an enclosing class: firstpage
Error:(23, 26) error: not an enclosing class: firstpage
Error:(24, 17) error: cannot find symbol method finish()
Error:(30, 54) error: not an enclosing class: firstpage
Error:(31, 26) error: not an enclosing class: firstpage
Error:(32, 17) error: cannot find symbol method finish()
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
:app:compileDebugJavaWithJavac FAILED
Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
编译失败;请参阅编译器错误输出以获取详细信 信息：建筑失败 信息：总时间：1分钟20.886秒 信息：13个错误 信息：0警告 信息：请参阅控制台中的完整输出
答案 0 :(得分：0)
图书馆积极
编译'com.android.support:customtabs:25。+'
编译'com.onesignal：OneSignal：3.5.8'