阳光沙滩-好久不用黄油刀了一用就错了

【已解决】好久不用黄油刀了一用就错了

阿肥

2022-03-16 10:45 182 2

butterknife

求大佬帮忙看看这个空异常是为啥我绑定了还是找不到

baseActivity

实现的registerActivity

如果去除setText 我下面也绑定了个点击事件不过点击事件也是无效

错误日志

03-16 10:44:06.180 3241-3241/com.lcq.st.sugarapp E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.lcq.st.sugarapp, PID: 3241
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.lcq.st.sugarapp/com.lcq.st.sugarapp.ui.activity.RegisterActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setText(java.lang.CharSequence)' on a null object reference
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2546)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2606)
        at android.app.ActivityThread.-wrap11(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1444)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5647)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635)
     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setText(java.lang.CharSequence)' on a null object reference
        at com.lcq.st.sugarapp.ui.activity.RegisterActivity.initData(RegisterActivity.java:63)
        at com.lcq.st.sugarapp.ui.activity.BaseActivity.onCreate(BaseActivity.java:59)
        at android.app.Activity.performCreate(Activity.java:6279)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2499)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2606)
        at android.app.ActivityThread.-wrap11(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1444)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5647)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635)

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最佳答案
view 的 id 不再是常量了黄油刀都不推荐开发者使用了，让你用 ViewBinding 或者 DataBinding

官网介绍：
Attention: This tool is now deprecated. Please switch to view binding. Existing versions will continue to work, obviously, but only critical bug fixes for integration with AGP will be considered. Feature development and general bug fixes have stopped.

注意：此工具现已弃用。请切换到视图绑定。显然，现有版本将继续工作，但只会考虑与 AGP 集成的关键错误修复。功能开发和一般错误修复已停止。

1204736502274318336 评论打赏 A lonely cat

A lonely cat

2022-03-16
- 阿肥回复 @A lonely cat
  
  旧版本不能继续使用吗 databinding还是和kt一块用好那无解了么
  
  阿肥 2022-03-16 10:56 回复 1382711465131241472
- A lonely cat 回复 @阿肥
  
  ViewBinding 就很好用啊
  
  A lonely cat 2022-03-16 11:08 回复 1204736502274318336
- 阿肥回复 @A lonely cat
  
  不能继承base 好难受估计得从设计开始就决定选啥了
  
  阿肥 2022-03-16 11:19 回复 1382711465131241472
- A lonely cat 回复 @阿肥
  
  前两天隔壁群还在说 Base 里最好不要涉及到 UI 的封装
  
  A lonely cat 2022-03-16 11:26 回复 1204736502274318336
- 阿肥回复 @A lonely cat
  
  好廖刚刚viewbinding有个错误来着一个属性加上去就总是build不到类
  
  阿肥 2022-03-16 12:08 回复 1382711465131241472
- A lonely cat 回复 @阿肥
  
  你姿势不对
  
  A lonely cat 2022-03-16 12:32 回复 1204736502274318336
- 阿肥回复 @A lonely cat
  
  进去了可以用了
  
  阿肥 2022-03-16 14:05 回复 1382711465131241472
- A lonely cat 回复 @阿肥
  
  欧克有用记得结贴
  
  A lonely cat 2022-03-16 14:08 回复 1204736502274318336
- 阿肥回复 @A lonely cat
  
  真香不用fvb 了舒服
  
  阿肥 2022-03-16 14:57 回复 1382711465131241472
- A lonely cat 回复 @阿肥
  
  嗯呐一旦用上就不想再写 fbi 了
  
  A lonely cat 2022-03-16 14:59 回复 1204736502274318336
0/200
0/200
fdv

1231137268748521472 评论打赏码划云

v

码划云

2022-03-16
- 阿肥回复 @码划云
  
  太懒了就用viewdatabing了
  
  阿肥 2022-03-16 14:00 回复 1382711465131241472
- A lonely cat 回复 @码划云
  
  fbi
  
  A lonely cat 2022-03-16 14:07 回复 1204736502274318336
0/200
0/200

// 黄油刀
implementation 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'

版本如上

评论打赏

阿肥

2022-03-16