Question

我试图以这种方式将CLFormRowDescriptor连接到视图控制器：

    var form = XLFormDescriptor()

    var section : XLFormSectionDescriptor
    var row : XLFormRowDescriptor

    form = XLFormDescriptor(title: "ABC") as XLFormDescriptor

    section = XLFormSectionDescriptor.formSectionWithTitle("Bla bla") as XLFormSectionDescriptor
    form.addFormSection(section)

    row = XLFormRowDescriptor(tag: "bla", rowType: XLFormRowDescriptorTypeSelectorPush, title: "BlaBla");
    row.action.viewControllerStoryboardId = "test";
    section.addFormRow(row)

视图控制器Storyboard ID为test。当我运行该应用程序时，我收到以下错误消息：

2015-07-03 16：42：24.022 TestTest [1001：203160] ***

在声明失败 - [XLFormSelectorCell formDescriptorCellDidSelectedWithFormController：]，/Users/valec/Developer/TestTest/ios/Pods/XLForm/XLForm/XL/Cell/XLFormSelectorCell.m:166

2015-07-03 16：42：24.024 TestTest [1001：203160] ***

由于未捕获的异常'NSInternalInconsistencyException'而终止应用程序，原因：'rowDescriptor.action.viewControllerClass必须符合XLFormRowDescriptorViewController协议'   ***首先抛出调用堆栈：

（0x18246c2d8 0x1941400e4 0x18246c198 0x183320ed4 0x100387a5c 0x100398680 0x10039c6d0 0x18700d408 0x1870c7724 0x186f681d4 0x186ed8680 0x1824242a4 0x182421230 0x182421610 0x18234d2d4 0x18bda36fc 0x186f4af40 0x100028e8c 0x1947eaa08）   libc ++ abi.dylib：以NSException类型的未捕获异常终止

您对如何解决此问题有所了解吗？您还需要更多代码或信息吗？

Answer 1

由于您的行类型为07-06 22:23:37.574 24510-24510/com.prashanth.emergencycontacts I/Timeline﹕ Timeline: Activity_launch_request id:com.prashanth.emergencycontacts time:14497951 07-06 22:23:37.601 24510-24510/com.prashanth.emergencycontacts I/ViewRootImpl﹕ CPU Rendering VSync enable = true 07-06 22:23:37.637 24510-24510/com.prashanth.emergencycontacts I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@2f428e3d time:14498015 07-06 22:23:37.662 24510-24528/com.prashanth.emergencycontacts D/OpenGLRenderer﹕ endAllStagingAnimators on 0xa18af280 (ListView) with handle 0xaec2ce40 07-06 22:23:38.413 24510-24510/com.prashanth.emergencycontacts I/Timeline﹕ Timeline: Activity_launch_request id:com.prashanth.emergencycontacts time:14498790 07-06 22:23:38.472 24510-24510/com.prashanth.emergencycontacts D/AndroidRuntime﹕ Shutting down VM 07-06 22:23:38.473 24510-24510/com.prashanth.emergencycontacts E/AndroidRuntime﹕ FATAL EXCEPTION: main Process: com.prashanth.emergencycontacts, PID: 24510 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.prashanth.emergencycontacts/com.prashanth.emergencycontacts.Contacts}: 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:2354) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2416) at android.app.ActivityThread.access$900(ActivityThread.java:153) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1319) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5287) 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:904) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699) 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.prashanth.emergencycontacts.Contacts.onCreate(Contacts.java:65) at android.app.Activity.performCreate(Activity.java:6041) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2416) at android.app.ActivityThread.access$900(ActivityThread.java:153) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1319) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5287) 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:904) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)，因此XLForm会推断您要实现自定义选择器并尝试将行描述符（包含当前选定值）传递给选择器视图控制器（在您的情况下为视图控制器）其中＆＃34;测试＆＃34;作为故事板ID）。

制作＆＃34;测试＆＃34;视图控制器符合XLFormRowDescriptorTypeSelectorPush以解决您的问题。

CLFormRowDescriptor未连接到视图控制器

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