Unable to get provider android.support.v4.content.FileProvider-优快云博客

本文解决了一款API 19的OPPO手机上运行项目时出现的FileProvider异常问题，通过在Application中重写attachBaseContext函数并初始化MultiDex来解决。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

今天在项目中碰到一个很棘手的问题,在一款api 19的oppo 手机上运行部了项目,一直报错 ,如下:

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.zyjr.emergencylending-1.apk”],nativeLibraryDirectories=[/data/app-lib/com.zyjr.emergencylending-1, /vendor/lib, /system/lib]]
at android.app.ActivityThread.installProvider(ActivityThread.java:4892)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:4484)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4424)
at android.app.ActivityThread.access $1500(ActivityThread.java:143) at android.app.ActivityThread$ H.handleMessage(ActivityThread.java:1269)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5120)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:818) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:634) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.ClassNotFoundException: Didn’t find class “android.support.v4.content.FileProvider” on path: DexPathList[[zip file “/data/app/com.zyjr.emergencylending-1.apk”],nativeLibraryDirectories=[/data/app-lib/com.zyjr.emergencylending-1, /vendor/lib, /system/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) at java.lang.ClassLoader.loadClass(ClassLoader.java:497) at java.lang.ClassLoader.loadClass(ClassLoader.java:457) at android.app.ActivityThread.installProvider(ActivityThread.java:4877) at android.app.ActivityThread.installContentProviders(ActivityThread.java:4484) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4424) at android.app.ActivityThread.access$ 1500(ActivityThread.java:143)
at android.app.ActivityThread $H.handleMessage(ActivityThread.java:1269) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5120) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$ MethodAndArgsCaller.run(ZygoteInit.java:818)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:634)
at dalvik.system.NativeStart.main(Native Method)

在网上找了好多资料,找了好久,终于解决了,希望能帮到需要的人,也帮自己记录一下!

解决方法：
可能是添加MultiDex分包，但未初始化的原因，在Application中重写attachBaseContext函数，对MultiDex初始化即可。
1）首先修改Gradle配置文件，启用MultiDex并包含MultiDex支持：

defaultConfig {
         multiDexEnabled true
    }

2）修改BaseApplication,重写attachBaseContext方法

@Override
protected void attachBaseContext(Context base) {
super.attachBaseContext(base);
MultiDex.install(base);
}