Delphi 11.1 Unable to get provider androidx.core.content.FileProvider

04-25 11:37:04.067  3783  3783 E AndroidRuntime: FATAL EXCEPTION: main
04-25 11:37:04.067  3783  3783 E AndroidRuntime: Process: com.kinglandsoft.zhdf, PID: 3783
04-25 11:37:04.067  3783  3783 E AndroidRuntime: java.lang.RuntimeException: Unable to get provider androidx.core.content.FileProvider: java.lang.ClassNotFoundException: Didn't find class "androidx.core.content.FileProvider" on path: DexPathList[[zip file "/data/app/com.kinglandsoft.zhdf-ncbNjsvkAJ0-XEHBSQGc1A==/base.apk"],nativeLibraryDirectories=[/data/app/com.kinglandsoft.zhdf-ncbNjsvkAJ0-XEHBSQGc1A==/lib/arm, /data/app/com.kinglandsoft.zhdf-ncbNjsvkAJ0-XEHBSQGc1A==/base.apk!/lib/armeabi-v7a, /system/lib, /hw_product/lib]]
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.app.ActivityThread.installProvider(ActivityThread.java:8173)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.app.ActivityThread.installContentProviders(ActivityThread.java:7709)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.app.ActivityThread.handleBindApplication(ActivityThread.java:7573)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.app.ActivityThread.access$2600(ActivityThread.java:260)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2435)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:110)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.os.Looper.loop(Looper.java:219)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:8668)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1109)
04-25 11:37:04.067  3783  3783 E AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.core.content.FileProvider" on path: DexPathList[[zip file "/data/app/com.kinglandsoft.zhdf-ncbNjsvkAJ0-XEHBSQGc1A==/base.apk"],nativeLibraryDirectories=[/data/app/com.kinglandsoft.zhdf-ncbNjsvkAJ0-XEHBSQGc1A==/lib/arm, /data/app/com.kinglandsoft.zhdf-ncbNjsvkAJ0-XEHBSQGc1A==/base.apk!/lib/armeabi-v7a, /system/lib, /hw_product/lib]]
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:209)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.app.AppComponentFactory.instantiateProvider(AppComponentFactory.java:147)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     at android.app.ActivityThread.installProvider(ActivityThread.java:8157)
04-25 11:37:04.067  3783  3783 E AndroidRuntime:     ... 10 more

用Delphi 11.1编译旧项目，象我是10.4.2迁移过来的，运行期启动即闪退，并且你拿到了日志，发现是这个原因造成的，解决的办法：

删除编译输出目录Android，重新编译即可！

 

 

 

 

此该，感慨万千，心里一万匹马奔腾而过！这个问题竟卡了我三天，百思不得其解，把项目检查了无数遍，包括发布的资源文件,SO,Jar，编译无数次，闪退无数次！！！

这时候才想起，还真看到一个朋友在说升级到D11.1时，删除原来的Android目录，重新编译！