在AndroidManifest.xml中加入下面这段话后,
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< provider android:name = "android.support.v4.content.FileProvider" android:authorities = "com.boxin.forklift.fileprovider" android:exported = "false" android:grantUriPermissions = "true" > < meta-data android:name = "android.support.FILE_PROVIDER_PATHS" android:resource = "@xml/file_paths" /> </ provider > |
在Android4.4.2版本的手机出现了下面的错误提示
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E/AndroidRuntime: FATAL EXCEPTION: main Process: com.boxin.forklift, PID: 7106 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.boxin.forklift-1.apk" ],nativeLibraryDirectories=[/data/app-lib/com.boxin.forklift- 1 , /vendor/lib, /system/lib, /data/datalib]] at android.app.ActivityThread.installProvider(ActivityThread.java: 5045 ) at android.app.ActivityThread.installContentProviders(ActivityThread.java: 4631 ) at android.app.ActivityThread.handleBindApplication(ActivityThread.java: 4571 ) at android.app.ActivityThread.access$ 1700 (ActivityThread.java: 143 ) at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1304 ) at android.os.Handler.dispatchMessage(Handler.java: 102 ) at android.os.Looper.loop(Looper.java: 136 ) at android.app.ActivityThread.main(ActivityThread.java: 5291 ) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java: 515 ) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 849 ) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 665 ) 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.boxin.forklift-1.apk" ],nativeLibraryDirectories=[/data/app-lib/com.boxin.forklift- 1 , /vendor/lib, /system/lib, /data/datalib]] 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: 5030 ) at android.app.ActivityThread.installContentProviders(ActivityThread.java: 4631 ) at android.app.ActivityThread.handleBindApplication(ActivityThread.java: 4571 ) at android.app.ActivityThread.access$ 1700 (ActivityThread.java: 143 ) at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1304 ) at android.os.Handler.dispatchMessage(Handler.java: 102 ) at android.os.Looper.loop(Looper.java: 136 ) at android.app.ActivityThread.main(ActivityThread.java: 5291 ) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java: 515 ) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 849 ) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 665 ) at dalvik.system.NativeStart.main(Native Method) |
解决方案:
第一: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:
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defaultConfig { multiDexEnabled true } |
项目完整写法:
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android { compileSdkVersion 27 defaultConfig { applicationId "com.boxin.forklift" minSdkVersion 19 targetSdkVersion 27 testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" multiDexEnabled true } |
2)修改BoXinApplication,重写attachBaseContext方法
BoxinApplication默认的命名方式是:BaseApplication
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@Override protected void attachBaseContext(Context base) { super .attachBaseContext(base); MultiDex.install(base); } |
加入后成功运行项目到手机。
以上这篇解决android.support.v4.content.FileProvide找不到的问题就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/boxin1101/article/details/89643396