Question

谁可以帮我修复Android项目中的错误。我在我的项目中与dropbox同步，但是当我尝试启动应用程序时我有错误：引起：java.lang.UnsatisfiedLinkError：找不到库DropboxSync

09-02 12:56:55.367    1313-1313/? E/AndroidRuntime: Uncaught handler: thread main exiting due to uncaught exception
09-02 12:56:55.377    1313-1313/? E/AndroidRuntime: java.lang.ExceptionInInitializerError
        at com.dropbox.sync.android.CoreAccountManager.initNativeLib(CoreAccountManager.java:111)
        at com.dropbox.sync.android.CoreAccountManager.<init>(CoreAccountManager.java:91)
        at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:132)
        at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:100)
        at com.shvedchenko.skleroshop.MainActivity.onCreate(MainActivity.java:44)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
        at android.app.ActivityThread.access$2200(ActivityThread.java:119)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:123)
        at android.app.ActivityThread.main(ActivityThread.java:4363)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:521)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
        at dalvik.system.NativeStart.main(Native Method)
        Caused by: java.lang.ExceptionInInitializerError
        at com.dropbox.sync.android.NativeLib.<init>(NativeLib.java:33)
        at com.dropbox.sync.android.NativeLib.<clinit>(NativeLib.java:11)
        ... 18 more
        Caused by: java.lang.UnsatisfiedLinkError: Library DropboxSync not found
        at java.lang.Runtime.loadLibrary(Runtime.java:489)
        at java.lang.System.loadLibrary(System.java:557)
        at com.dropbox.sync.android.NativeHttp.<clinit>(NativeHttp.java:411)
        ... 20 more

第№行是mDbxAcctMgr = DbxAccountManager.getInstance（getApplicationContext（），appKey，appSecret）;

我不明白什么是错的？

THX！

Answer 1

这是我的解决方案：

dependencies {
    compile files('libs/dropbox-sync-sdk-android.jar')
}

android {
    tasks.withType(com.android.build.gradle.tasks.PackageApplication) {
        pkgTask -> pkgTask.jniFolders = new HashSet<File>();
            pkgTask.jniFolders.add(new File(projectDir, 'libs'));
    }
}

将Dropbox sdk中的'libs'文件夹放在与'build'和'src'文件夹相同的级别。

Answer 2

您似乎错过了Dropbox（本机部分）的库

你可以在stacktrace的底部看到它

    Caused by: java.lang.UnsatisfiedLinkError: Library DropboxSync not found
    at java.lang.Runtime.loadLibrary(Runtime.java:489)
    at java.lang.System.loadLibrary(System.java:557)
    at com.dropbox.sync.android.NativeHttp.<clinit>(NativeHttp.java:411)
    ... 20 more

检查库下载或文档从哪里获取缺少的库文件

[更新] ：如何在android studio中使用本机库

将* .so文件放在src文件夹

旁边的libs文件夹中

task copyNativeLibs(type: Copy) {
    from(new File('libs')) { include '**/*.so' }
    into new File(buildDir, 'native-libs')
}

tasks.withType(Compile) { compileTask -> compileTask.dependsOn copyNativeLibs }

clean.dependsOn 'cleanCopyNativeLibs'

tasks.withType(com.android.build.gradle.tasks.PackageApplication) { pkgTask ->
    pkgTask.jniDir new File(buildDir, 'native-libs')
}

Answer 3

看起来这是本机库和gradle的一般问题。我发现这个SO答案很有帮助：Include .so library in apk in android studio

我的build.gradle文件的一部分现在看起来像这样，我的应用程序成功启动：

dependencies {
    compile fileTree(dir: "$buildDir/native-libs", include: 'native-libs.jar')
    compile fileTree(dir: 'libs', include: '*.jar')
}

task nativeLibsToJar(
        type: Zip,
        description: 'create a jar archive of the native libs') {
    destinationDir file("$buildDir/native-libs")
    baseName 'native-libs'
    extension 'jar'
    from fileTree(dir: 'libs', include: '**/*.so')
    into 'lib/'
}

tasks.withType(Compile) {
    compileTask -> compileTask.dependsOn(nativeLibsToJar)
}

Answer 4

无需复制数据的解决方案

可能我们大多数开发人员不喜欢将数据从一个位置复制到另一个位置......所以这里的解决方案没有将.so文件复制到您的项目中：

compile files('M:\\Dropbox\\SWDevelopment\\Libraries\\Android\\dropbox-android-sync-sdk-3.1.2\\libs\\dropbox-sync-sdk-android.jar')
compile fileTree(dir: "$buildDir/native-libs", include: 'native-libs.jar')
task nativeLibsToJar(type: Zip, description: 'create a jar archive of the native libs') {
    destinationDir file("$buildDir/native-libs")
    baseName 'native-libs'
    extension 'jar'
    from fileTree(dir: 'M:/Dropbox/SWDevelopment/Libraries/Android/dropbox-android-sync-sdk-3.1.2/libs', include: '**/*.so')
    into 'lib/'
}

tasks.withType(JavaCompile) {
    compileTask -> compileTask.dependsOn(nativeLibsToJar)
}

只需将我的Dropbox sync api文件夹的2个出现调整为您自己的...

Android＆amp; DropboxSync库

4 个答案: