1、每次都需要重复写上图点击方法,于是想把它提取出来。于是就有下图:
图中的方法,参数:AppCompatActivity activity,本来应该传递的是EditActivity,但是不知道参数应该怎么写,必须能使用setContentView方法,(或者大神能够实现跳转功能也行)。
2、目前这样写,运行出错如下:
2019-03-25 22:54:50.441 4612-4612/com.example.beiwanglu E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.beiwanglu, PID: 4612
java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
at android.support.v7.app.AppCompatDelegateImpl.(AppCompatDelegateImpl.java:249)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:182)
at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:520)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.beiwanglu.ViewUtil$2.onClick(ViewUtil.java:46)
at android.view.View.performClick(View.java:5609)
at android.view.View$PerformClick.run(View.java:22259)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
2019-03-25 22:54:50.443 546-960/system_process W/ActivityManager: Force finishing activity com.example.beiwanglu/.EditActivity
2019-03-25 22:54:50.469 546-591/system_process I/OpenGLRenderer: Initialized EGL, version 1.4
2019-03-25 22:54:50.469 546-591/system_process D/OpenGLRenderer: Swap behavior 1
3、有大神知道最后一个参数应该怎么写吗?