Resolve android. support. v4.content. FileProvide not found
- 2021-11-29 08:33:48
- OfStack
After adding the following passage in AndroidManifest. xml,
<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>
The following error appears in the Android version 4.4. 2 mobile phone
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)
Solution:
1: It may be the reason why MultiDex subcontract is added but not initialized. Rewrite attachBaseContext function in Application and initialize MultiDex.
1) First modify the Gradle configuration file to enable MultiDex and include MultiDex support:
defaultConfig {
multiDexEnabled true
}
Complete writing of the project:
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.boxin.forklift"
minSdkVersion 19
targetSdkVersion 27
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true
}
2) Modify BoXinApplication and override attachBaseContext method
The default naming of BoxinApplication is: BaseApplication
@Override
protected void attachBaseContext(Context base) {
super.attachBaseContext(base);
MultiDex.install(base);
}
After joining, successfully run the project to the mobile phone.