我正试图迁移到androidx。我在Android Studio中使用了迁移工具。当我这样做时,我在运行我的应用程序时会得到以下堆栈跟踪。
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.peerke.outdoorpuzzlegame.debug, PID: 10901
java.lang.RuntimeException: Unable to get provider android.support.v4.content.FileProvider: java.lang.ClassNotFoundException: Didn't find class "android.support.v4.content.FileProvider" on path: DexPathList[[zip file "/data/app/com.peerke.outdoorpuzzlegame.debug-IBtFsngoLqc-cQb_hOO5wQ==/base.apk"],nativeLibraryDirectories=[/data/app/com.peerke.outdoorpuzzlegame.debug-IBtFsngoLqc-cQb_hOO5wQ==/lib/x86, /system/lib]]
at android.app.ActivityThread.installProvider(ActivityThread.java:6376)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5932)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5847)
at android.app.ActivityThread.access$1000(ActivityThread.java:198)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1637)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6649)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v4.content.FileProvider" on path: DexPathList[[zip file "/data/app/com.peerke.outdoorpuzzlegame.debug-IBtFsngoLqc-cQb_hOO5wQ==/base.apk"],nativeLibraryDirectories=[/data/app/com.peerke.outdoorpuzzlegame.debug-IBtFsngoLqc-cQb_hOO5wQ==/lib/x86, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at android.app.AppComponentFactory.instantiateProvider(AppComponentFactory.java:121)
at androidx.core.app.CoreComponentFactory.instantiateProvider(CoreComponentFactory.java:62)
at android.app.ActivityThread.installProvider(ActivityThread.java:6360)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5932)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5847)
at android.app.ActivityThread.access$1000(ActivityThread.java:198)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1637)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6649)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)
例外是正确的。 android.support.v4.content.FileProvider并不存在于我的应用程序中。但androidx.core.content.FileProvider包含在我的应用程序中。 最大的问题是它为什么要加载旧版本的FileProvider?
答案 0 :(得分:21)
感谢@CommonsWare
更多解释:
怎么做,在android.support.v4.FileProvider
的{{1}}中找到<provider>
。
将其更改为AndroidManifest.xml
答案 1 :(得分:15)
为什么要加载旧版本的FileProvider?
根据堆栈跟踪,您可能仍在使用清单中<provider>
元素中的旧包名称。
答案 2 :(得分:1)
只需在 manifiedt.xml 文件中更改此
<provider
android:name="android.support.v4.content.FileProvider"
.....
</provider>
为此
<provider
android:name="androidx.core.content.FileProvider"
......
</provider>