我正在使用 FileProvider在我的应用程序中。像往常一样，我宣布 <Provider>在 AndroidManifest.xml 中标记文件如下。

<provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="com.jk.android.fileprovider"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/file_paths" />
</provider>

当我在有 lollipop 的安卓设备上运行它时版本它工作正常。当我在 kitkat 上试穿时版本它显示以下错误:

FATAL EXCEPTION: main
              Process: com.jk.android.perfectphotoeditor2018, PID: 24992
              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.jk.android.perfectphotoeditor2018-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.jk.android.perfectphotoeditor2018-2, /system/lib]]
                  at android.app.ActivityThread.installProvider(ActivityThread.java:5071)
                  at android.app.ActivityThread.installContentProviders(ActivityThread.java:4648)
                  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4588)
                  at android.app.ActivityThread.access$1500(ActivityThread.java:151)
                  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1290)
                  at android.os.Handler.dispatchMessage(Handler.java:102)
                  at android.os.Looper.loop(Looper.java:136)
                  at android.app.ActivityThread.main(ActivityThread.java:5299)
                  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:932)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:748)
                  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.jk.android.perfectphotoeditor2018-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.jk.android.perfectphotoeditor2018-2, /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:5056)
                  at android.app.ActivityThread.installContentProviders(ActivityThread.java:4648) 
                  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4588) 
                  at android.app.ActivityThread.access$1500(ActivityThread.java:151) 
                  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1290) 
                  at android.os.Handler.dispatchMessage(Handler.java:102) 
                  at android.os.Looper.loop(Looper.java:136) 
                  at android.app.ActivityThread.main(ActivityThread.java:5299) 
                  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:932) 
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:748) 
                  at dalvik.system.NativeStart.main(Native Method)

我尝试过很多解决方案，比如 this但它对我不起作用。所以，帮我解决这个问题。

build.gradle依赖:

dependencies {
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    configurations.all {
        resolutionStrategy.force 'com.google.code.findbugs:jsr305:1.3.9'
    }
    testCompile 'junit:junit:4.12'
    /* Add the CSDK framework dependencies (Make sure these version numbers are correct) */
    //    compile 'com.aviary.android.feather.sdk:aviary-sdk:3.6.3'
    compile 'com.android.support:appcompat-v7:25.4.0'
    compile 'com.adobe.creativesdk.foundation:auth:0.9.1251'
    compile 'com.adobe.creativesdk:image:4.8.4'
    compile 'com.localytics.android:library:4.0.1'
    compile 'com.android.support:design:25.4.0'
    compile 'com.android.support:multidex:1.0.2'
    compile 'com.android.support:support-v4:25.4.0'
    compile 'com.intuit.sdp:sdp-android:1.0.4'
    compile 'com.github.bumptech.glide:glide:4.3.1'
    compile 'com.google.android.gms:play-services-ads:9.4.0'
    implementation 'com.android.support:support-v4:25.4.0'
}

最佳答案

如果您已迁移到 AndroidX，则必须将 AndroidManifest.xml 中的名称更改为 androidx.core.content.FileProvider

这就是我遇到的崩溃。

关于在 android Kitkat 中找不到 android.support.v4.content.FileProvider 类，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47888142/