我为twoway-view库制作了自定义绑定。
dll生成似乎没问题，我可以毫无问题地执行以下操作：
var twoWayView = new Org.Lucasr.TwoWayView.Widget.TwoWayView(this);
但是，如果尝试使用Java反射实例化类：
Java.Lang.Class.ForName("Org.Lucasr.TwoWayView.Widget.TwoWayView")
我得到了一个ClassNotFoundException，这个异常与试图将包含双向视图的布局充气时发生的异常相同，如下所示：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:id="@+id/MyButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/Hello" />
<Org.Lucasr.Twowayview.Widget.TwoWayView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:scrollbars="vertical"
app:twowayview_layoutManager="StaggeredGridLayoutManager"
app:twowayview_numColumns="2"
app:twowayview_numRows="1" />
</LinearLayout>
编辑
如前所述使用dexdumphere我可以看到类在我的apk中：
Class #1172 -
Class descriptor : 'Lorg/lucasr/twowayview/widget/TwoWayView;'
Access flags : 0x0001 (PUBLIC)
Superclass : 'Landroid/support/v7/widget/RecyclerView;'
Interfaces -
编辑2
使用org.lucasr.twowayview.widget.twowayview也会出现同样的错误。
完全的例外是：
01-23 13:02:04.837 I/MonoDroid(17779): UNHANDLED EXCEPTION:
01-23 13:02:04.861 I/MonoDroid(17779): Android.Views.InflateException: Exception of type 'Android.Views.InflateException' was thrown.
01-23 13:02:04.861 I/MonoDroid(17779): at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <IL 0x00011, 0x00068>
01-23 13:02:04.861 I/MonoDroid(17779): at Android.Runtime.JNIEnv.CallNonvirtualVoidMethod (intptr,intptr,intptr,Android.Runtime.JValue[]) [0x00084] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.21-series/49a04b96/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:896
01-23 13:02:04.861 I/MonoDroid(17779): at Android.App.Activity.SetContentView (int) [0x00070] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.21-series/49a04b96/source/monodroid/src/Mono.Android/platforms/android-19/src/generated/Android.App.Activity.cs:4253
01-23 13:02:04.861 I/MonoDroid(17779): at Org.Lucasr.TwoWayView.Sample.MainActivity.OnCreate (Android.OS.Bundle) [0x0001d] in c:\Users\guilherme\Documents\Visual Studio 2013\Projects\Org.Lucasr.TwoWayView\Org.Lucasr.TwoWayView.Sample\MainActivity.cs:25
01-23 13:02:04.862 I/MonoDroid(17779): at Android.App.Activity.n_OnCreate_Landroid_os_Bundle_ (intptr,intptr,intptr) [0x00011] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.21-series/49a04b96/source/monodroid/src/Mono.Android/platforms/android-19/src/generated/Android.App.Activity.cs:2179
01-23 13:02:04.862 I/MonoDroid(17779): at (wrapper dynamic-method) object.e4603f87-2e86-4a8a-9cd2-213f87378350 (intptr,intptr,intptr) <IL 0x00017, 0x00043>
01-23 13:02:04.862 I/MonoDroid(17779): --- End of managed exception stack trace ---
01-23 13:02:04.862 I/MonoDroid(17779): android.view.InflateException: Binary XML file line #1: Error inflating class Org.Lucasr.Twowayview.Widget.TwoWayView
01-23 13:02:04.862 I/MonoDroid(17779): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:757)
01-23 13:02:04.862 I/MonoDroid(17779): at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
01-23 13:02:04.862 I/MonoDroid(17779): at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
01-23 13:02:04.862 I/MonoDroid(17779): at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
01-23 13:02:04.862 I/MonoDroid(17779): at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
01-23 13:02:04.862 I/MonoDroid(17779): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:377)
01-23 13:02:04.862 I/MonoDroid(17779): at android.app.Activity.setContentView(Activity.java:2144)
01-23 13:02:04.862 I/MonoDroid(17779): at org.lucasr.twowayview.sample.MainActivity.n_onCreate(Native Method)
01-23 13:02:04.862 I/MonoDroid(17779): at org.lucasr.twowayview.sample.MainActivity.onCreate(MainActivity.java:28)
01-23 13:02:04.862 I/MonoDroid(17779): at android.app.Activity.performCreate(Activity.java:5933)
01-23 13:02:04.862 I/MonoDroid(17779): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
01-23 13:02:04.862 I/MonoDroid(17779): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
01-23 13:02:04.862 I/MonoDroid(17779): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
01-23 13:02:04.862 I/MonoDroid(17779): at android.app.ActivityThread.access$800(ActivityThread.java:144)
01-23 13:02:04.862 I/MonoDroid(17779): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
01-23 13:02:04.862 I/MonoDroid(17779): at android.os.Handler.dispatchMessage(Handler.java:102)
01-23 13:02:04.862 I/MonoDroid(17779): at android.os.Looper.loop(Looper.java:135)
01-23 13:02:04.862 I/MonoDroid(17779): at android.app.ActivityThread.main(ActivityThread.java:5221)
01-23 13:02:04.862 I/MonoDroid(17779): at java.lang.reflect.Method.invoke(Native Method)
01-23 13:02:04.862 I/MonoDroid(17779): at java.lang.reflect.Method.invoke(Method.java:372)
01-23 13:02:04.862 I/MonoDroid(17779): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
01-23 13:02:04.862 I/MonoDroid(17779): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
01-23 13:02:04.862 I/MonoDroid(17779): Caused by: java.lang.ClassNotFoundException: Didn't find class "Org.Lucasr.Twowayview.Widget.TwoWayView" on path: DexPathList[[zip file "/data/app/Org.Lucasr.TwoWayView.Sample-1/base.apk"],nativeLibraryDirectories=[/data/app/Org.Lucasr.TwoWayView.Sample-1/lib/arm, /vendor/lib, /system/lib]]
01-23 13:02:04.862 I/MonoDroid(17779): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
01-23 13:02:04.862 I/MonoDroid(17779): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
01-23 13:02:04.862 I/MonoDroid(17779): at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
01-23 13:02:04.862 I/MonoDroid(17779): at android.view.LayoutInflater.createView(LayoutInflater.java:571)
01-23 13:02:04.862 I/MonoDroid(17779): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
01-23 13:02:04.862 I/MonoDroid(17779): ... 21 more
01-23 13:02:04.862 I/MonoDroid(17779): Suppressed: java.lang.ClassNotFoundException: Org.Lucasr.Twowayview.Widget.TwoWayView
01-23 13:02:04.862 I/MonoDroid(17779): at java.lang.Class.classForName(Native Method)
01-23 13:02:04.862 I/MonoDroid(17779): at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
01-23 13:02:04.863 I/MonoDroid(17779): at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
01-23 13:02:04.863 I/MonoDroid(17779): at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
01-23 13:02:04.863 I/MonoDroid(17779): ... 24 more
01-23 13:02:04.863 I/MonoDroid(17779): Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available An unhandled exception occured.
01-23 13:02:05.453 E/mono (17779):
01-23 13:02:05.453 E/mono (17779): Unhandled Exception:
01-23 13:02:05.453 E/mono (17779): Android.Views.InflateException: Exception of type 'Android.Views.InflateException' was thrown.
01-23 13:02:05.453 E/mono (17779): at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <IL 0x00011, 0x00068>
01-23 13:02:05.453 E/mono (17779): at Android.Runtime.JNIEnv.CallNonvirtualVoidMethod (intptr,intptr,intptr,Android.Runtime.JValue[]) [0x00084] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.21-series/49a04b96/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:896
01-23 13:02:05.453 E/mono (17779): at Android.App.Activity.SetContentView (int) [0x00070] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.21-series/49a04b96/source/monodroid/src/Mono.Android/platforms/android-19/src/generated/Android.App.Activity.cs:4253
01-23 13:02:05.453 E/mono (17779): at Org.Lucasr.TwoWayView.Sample.MainActivity.OnCreate (Android.OS.Bundle) [0x0001d] in c:\Users\guilherme\Documents\Visual Studio 2013\Projects\Org.Lucasr.TwoWayView\Org.Lucasr.TwoWayView.Sample\MainActivity.cs:25
01-23 13:02:05.453 E/mono (17779): at Android.App.Activity.n_OnCreate_Landroid_os_Bundle_ (intptr,intptr,intptr) [0x00011] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.21-series/49a04b96/source/monodroid/src/Mono.Android/platforms/android-19/src/generated/Android.App.Activity.cs:2179
01-23 13:02:05.453 E/mono (17779): at (wrapper dynamic-method) object.e4603f87-2e86-4a8a-9cd2-213f87378350 (intptr,intptr,intptr) <IL 0x00017, 0x00043>
01-23 13:02:05.453 E/mono (17779):
01-23 13:02:05.453 E/mono (17779): --- End of managed exception stack trace ---
01-23 13:02:05.453 E/mono (17779): android.view.InflateException: Binary XML file line #1: Error inflating class Org.Lucasr.Twowayview.Widget.TwoWayView
01-23 13:02:05.453 E/mono (17779): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:757)
01-23 13:02:05.453 E/mono (17779): at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
01-23 13:02:05.453 E/mono (17779): at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
01-23 13:02:05.453 E/mono (17779): at android.view.LayoutInflater.inflate(LayoutInflater.java:365) referenceTable GDEF length=670 1 referenceTable GSUB length=7202 1 referenceTable GPOS length=24560 1
01-23 13:02:05.453 E/mono (17779): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:377)
01-23 13:02:05.453 E/mono (17779): at android.app.Activity.setContentView(Activity.java:2144)
01-23 13:02:05.453 E/mono (17779): at org.lucasr.twowayview.sample.MainActivity.n_onCreate(Native Method)
01-23 13:02:05.453 E/mono (17779): at org.lucasr.twowayview.sample.MainActivity.onCreate(MainActivity.java:28)
01-23 13:02:05.453 E/mono (17779): at android.app.Activity.performCreate(Activity.java:5933)
01-23 13:02:05.453 E/mono (17779): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
01-23 13:02:05.453 E/mono (17779): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
01-23 13:02:05.453 E/mono (17779): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
01-23 13:02:05.453 E/mono (17779): at android.app.ActivityThread.access$800(ActivityThread.java:144)
01-23 13:02:05.453 E/mono (17779): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
01-23 13:02:05.453 E/mono (17779): at android.os.Handler.dispatchMessage(Handler.java:102)
01-23 13:02:05.453 E/mono (17779): at android.os.Looper.loop(Looper.java:135)
01-23 13:02:05.453 E/mono (17779): at android.app.ActivityThread.main(ActivityThread.java:5221)
01-23 13:02:05.453 E/mono (17779): at java.lang.reflect.Method.invoke(Native Method)
最佳答案
这听起来类似于我在尝试使用反射动态创建对象时遇到的问题。在我的例子中，是xamarin链接器在构建时删除了类。
您可以在此处阅读有关链接器的更多信息：
https://developer.xamarin.com/guides/android/advanced_topics/linking/
尝试将其设置为“不链接”，以查看这是否会消除错误。如果是，则需要静态引用该类或将其标记为preserve。