java.lang.NoClassDefFoundError：解析失败：Lcom/google/android/gms/vision/face/FaceDetector；
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【中文标题】java.lang.NoClassDefFoundError：解析失败：Lcom/google/android/gms/vision/face/FaceDetector；【英文标题】：java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/vision/face/FaceDetector; 【发布时间】：2018-06-13 15:15:52 【问题描述】：我正在为 Unity 编写一个使用 android 人脸检测的 android 插件。我的插件与旧的
android.media.FaceDetector;
面部检测器，我想将其更新为新的 Google 视觉 API
由于某种原因，只需添加面部检测器变量的声明，就会导致插件在启动时立即崩溃。
这里是相关代码。
package com.test.camerapreview;
import android.app.Activity;
//import android.content.Context;
//import android.graphics.Bitmap;
//import android.graphics.BitmapFactory;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
//import android.media.FaceDetector;
import android.opengl.GLES11Ext;
import android.opengl.GLES20;
import android.util.Log;
//import android.util.SparseArray;
import android.view.Display;
import android.view.Surface;
//import android.view.SurfaceView;
//import com.google.android.gms.vision.Frame;
import com.google.gson.Gson;
import com.unity3d.player.UnityPlayer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
//import com.google.android.gms.common.ConnectionResult;
//import com.google.android.gms.common.GoogleApiAvailability;
//import com.google.android.gms.vision.CameraSource;
//import com.google.android.gms.vision.MultiProcessor;
//import com.google.android.gms.vision.Tracker;
//import com.google.android.gms.vision.face.Face;
import com.google.android.gms.vision.face.FaceDetector;
public class NativeCamera implements Camera.PreviewCallback, Camera.FaceDetectionListener
public static NativeCamera instance;
public static String gameObjectTargetName;
private static Activity myActivity;
Camera mCamera;
int camId;
SurfaceTexture texture;
int nativeTexturePointer = -1;
int unrotatedWidth;
int unrotatedHeight;
int rotatedHeight;
int rotatedWidth;
com.google.android.gms.vision.face.FaceDetector faceDetector; // Putting this here makes my app crash.
//
// Call this function first.
//
public static void Setup(String gameObjectName, Activity theActivity)
gameObjectTargetName = gameObjectName;
myActivity = theActivity;
instance = new NativeCamera();
// Rest of code snipped out
与此来源的唯一区别是添加了 faceDetector 变量。它不在任何地方使用。
这是我在 adb logcat 中看到的错误
01-03 14:00:45.798 19649-19787/? W/MDM: InstalledPackageMonitor - <--> getAppVersionForUid(-1) failed to find matching entity
01-03 14:00:46.123 19649-19787/? I/chatty: uid=10117(com.metago.astro) bmv identical 1 line
01-03 14:00:46.141 19649-19787/? W/MDM: InstalledPackageMonitor - <--> getAppVersionForUid(-1) failed to find matching entity
01-03 14:00:46.346 723-830/? I/ThermalEngine: vs_get_temperature: read[0] tsens_tz_sensor15 49000 mC, weight[0] 1
01-03 14:00:46.346 723-830/? I/ThermalEngine: vs_get_temperature: read[1] tsens_tz_sensor0 53000 mC, weight[1] -1
01-03 14:00:46.710 19649-19787/? W/MDM: InstalledPackageMonitor - <--> getAppVersionForUid(-1) failed to find matching entity
01-03 14:00:46.770 14771-14784/? I/zygote64: Waiting for a blocking GC ProfileSaver
01-03 14:00:46.792 14771-14784/? I/zygote64: WaitForGcToComplete blocked ProfileSaver on AddRemoveAppImageSpace for 21.469ms
01-03 14:00:47.348 723-830/? I/ThermalEngine: vs_get_temperature: read[0] tsens_tz_sensor15 49000 mC, weight[0] 1
01-03 14:00:47.348 723-830/? I/ThermalEngine: vs_get_temperature: read[1] tsens_tz_sensor0 52000 mC, weight[1] -1
01-03 14:00:47.492 2286-2286/? I/WearableService: Wearable Services stopping
01-03 14:00:48.350 723-830/? I/ThermalEngine: vs_get_temperature: read[0] tsens_tz_sensor15 48000 mC, weight[0] 1
01-03 14:00:48.350 723-830/? I/ThermalEngine: vs_get_temperature: read[1] tsens_tz_sensor0 52000 mC, weight[1] -1
01-03 14:00:49.352 723-830/? I/ThermalEngine: vs_get_temperature: read[0] tsens_tz_sensor15 48000 mC, weight[0] 1
01-03 14:00:49.352 723-830/? I/ThermalEngine: vs_get_temperature: read[1] tsens_tz_sensor0 52000 mC, weight[1] -1
01-03 14:00:49.904 868-2419/? I/ActivityManager: START u0 act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.tvgla.campreview/com.unity3d.player.UnityPlayerActivity bnds=[586,1508][855,1857] from uid 10032
01-03 14:00:49.908 671-671/? D/QCOM PowerHAL: LAUNCH HINT: ON
01-03 14:00:49.909 1950-1952/? E/ANDR-PERF-OPTSHANDLER: Warning: Resource [2, 0] not supported for core 1. Instead use resource for core 0
01-03 14:00:49.909 658-2267/? I/ACDB-LOADER: ACDB AFE returned = -19
01-03 14:00:49.909 1950-1952/? E/ANDR-PERF-RESOURCEQS: Failed to apply optimization [2, 2, 0]
01-03 14:00:49.909 658-2267/? D/hardware_info: hw_info_append_hw_type : device_name = speaker
01-03 14:00:49.909 658-2267/? D/audio_hw_primary: enable_snd_device: snd_device(2: speaker)
01-03 14:00:49.909 658-2267/? D/audio_route: Apply path: speaker
01-03 14:00:49.909 658-2267/? D/audio_hw_primary: enable_audio_route: usecase(1) apply and update mixer path: low-latency-playback speaker
01-03 14:00:49.909 658-2267/? D/audio_route: Apply path: low-latency-playback speaker
01-03 14:00:49.923 671-671/? D/QCOM PowerHAL: Activity launch hint handled
01-03 14:00:49.948 868-894/? I/ActivityManager: Start proc 14820:com.tvgla.campreview/u0a324 for activity com.tvgla.campreview/com.unity3d.player.UnityPlayerActivity
01-03 14:00:49.948 658-2267/? D/audio_hw_primary: out_write: retry previous failed cal level set
01-03 14:00:49.958 14820-14820/? I/zygote: Late-enabling -Xcheck:jni
01-03 14:00:50.090 14820-14837/? D/OpenGLRenderer: HWUI GL Pipeline
01-03 14:00:50.121 14820-14837/? I/Adreno: QUALCOMM build : 2941438, I916dfac403
Build Date : 10/03/17
OpenGL ES Shader Compiler Version: EV031.21.02.00
Local Branch : O18A
Remote Branch :
Remote Branch :
Reconstruct Branch :
01-03 14:00:50.126 14820-14837/? I/Adreno: PFP: 0x005ff087, ME: 0x005ff063
01-03 14:00:50.132 14820-14837/? I/zygote: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0
01-03 14:00:50.133 14820-14837/? I/OpenGLRenderer: Initialized EGL, version 1.4
01-03 14:00:50.133 14820-14837/? D/OpenGLRenderer: Swap behavior 2
01-03 14:00:50.165 868-918/? I/ActivityManager: Displayed com.tvgla.campreview/com.unity3d.player.UnityPlayerActivity: +225ms
01-03 14:00:50.167 1377-1377/? I/GoogleInputMethod: onFinishInput() : Dummy InputConnection bound
01-03 14:00:50.167 1377-1377/? I/GoogleInputMethod: onStartInput() : Dummy InputConnection bound
01-03 14:00:50.173 671-671/? D/QCOM PowerHAL: LAUNCH HINT: OFF
01-03 14:00:50.192 14820-14836/? I/Unity: SystemInfo CPU = ARMv7 VFPv3 NEON, Cores = 4, Memory = 3753mb
01-03 14:00:50.192 14820-14836/? I/Unity: SystemInfo ARM big.LITTLE configuration: 2 big (mask: 12), 2 little (mask: 3)
01-03 14:00:50.192 14820-14836/? I/Unity: ApplicationInfo com.tvgla.campreview version 1.0 build 44c1fe70-80a4-4a60-8a18-207b4d37a86f
01-03 14:00:50.195 14836-14836/? W/UnityMain: type=1400 audit(0.0:91697): avc: denied read for name="stat" dev="proc" ino=4026532357 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:proc_stat:s0 tclass=file permissive=0
01-03 14:00:50.262 14820-14836/? E/Unity: Unable to find AudioPluginMsHRTF
01-03 14:00:50.263 14820-14836/? E/Unity: Unable to find AudioPluginOculusSpatializer
01-03 14:00:50.264 14820-14836/? E/Unity: Unable to find unitygar
01-03 14:00:50.264 14820-14836/? E/Unity: Unable to find libAudioPluginOculusSpatializer
01-03 14:00:50.266 14820-14836/? E/Unity: Unable to find libtango_3d_reconstruction_api
01-03 14:00:50.280 14820-14836/? D/Unity: GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_vertex_half_float GL_OES_framebuffer_object GL_OES_rgb8_rgba8 GL_OES_compressed_ETC1_RGB8_texture GL_AMD_compressed_ATC_texture GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_hdr GL_OES_texture_compression_astc GL_OES_texture_npot GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_OES_texture_3D GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_QCOM_alpha_test GL_OES_depth24 GL_OES_packed_depth_stencil GL_OES_depth_texture GL_OES_depth_texture_cube_map GL_EXT_sRGB GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_EXT_texture_type_2_10_10_10_REV GL_EXT_texture_sRGB_decode GL_OES_element_index_uint GL_EXT_copy_image GL_EXT_geometry_shader GL_EXT_tessellation_shader GL_OES_texture_stencil8 GL_EXT_shader_io_blocks GL_OES_shader_image_atomic GL_OES_sample_variables GL_EXT_texture_border_clamp GL_EXT_multisampled_render_to_texture GL_EXT_mul
01-03 14:00:50.280 14820-14836/? D/Unity: tisampled_render_to_texture2 GL_OES_shader_multisample_interpolation GL_EXT_texture_cube_map_array GL_EXT_draw_buffers_indexed GL_EXT_gpu_shader5 GL_EXT_robustness GL_EXT_texture_buffer GL_EXT_shader_framebuffer_fetch GL_ARM_shader_framebuffer_fetch_depth_stencil GL_OES_texture_storage_multisample_2d_array GL_OES_sample_shading GL_OES_get_program_binary GL_EXT_debug_label GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_QCOM_tiled_rendering GL_ANDROID_extension_pack_es31a GL_EXT_primitive_bounding_box GL_OES_standard_derivatives GL_OES_vertex_array_object GL_EXT_disjoint_timer_query GL_KHR_debug GL_EXT_YUV_target GL_EXT_sRGB_write_control GL_EXT_texture_norm16 GL_EXT_discard_framebuffer GL_OES_surfaceless_context GL_OVR_multiview GL_OVR_multiview2 GL_EXT_texture_sRGB_R8 GL_KHR_no_error GL_EXT_debug_marker GL_OES_EGL_image_external_essl3 GL_OVR_multiview_multisampled_render_to_texture GL_EXT_buffer_storage GL_EXT_external_buffer GL_EXT_blit_framebuffer_params GL_EXT_clip_cull_distance
01-03 14:00:50.280 14820-14836/? D/Unity: GL_EXT_protected_textures GL_EXT_shader_non_constant_global_initializers GL_QCOM_framebuffer_foveated GL_QCOM_shader_framebuffer_fetch_noncoherent GL_EXT_EGL_image_array GL_NV_shader_noperspective_interpolation
[ 01-03 14:00:50.316 14820:14836 D/ ]
PlayerBase::PlayerBase()
[ 01-03 14:00:50.317 14820:14836 D/ ]
TrackPlayerBase::TrackPlayerBase()
01-03 14:00:50.317 14820-14836/? I/libOpenSLES: Emulating old channel mask behavior (ignoring positional mask 0x3, using default mask 0x3 based on channel count of 2)
01-03 14:00:50.317 14820-14836/? W/AudioTrack: notificationFrames=-10 clamped to the range -1 to -8
01-03 14:00:50.319 14820-14836/? I/AudioTrack: AUDIO_OUTPUT_FLAG_FAST successful; frameCount 1536 -> 1536
01-03 14:00:50.319 14820-14836/? D/AudioTrack: Client defaulted notificationFrames to 192 for frameCount 1536
01-03 14:00:50.321 1342-1881/? D/Avrcp: AudioManager Player: ID:23 -- type:android.media.SoundPool -- u/pid:10043/1393 -- state:idle -- attr:AudioAttributes: usage=USAGE_ASSISTANCE_SONIFICATION content=CONTENT_TYPE_SONIFICATION flags=0x0 tags= bundle=null
01-03 14:00:50.321 1342-1881/? D/Avrcp: AudioManager Player: ID:15 -- type:android.media.SoundPool -- u/pid:1000/868 -- state:idle -- attr:AudioAttributes: usage=USAGE_ASSISTANCE_SONIFICATION content=CONTENT_TYPE_SONIFICATION flags=0x0 tags= bundle=null
01-03 14:00:50.321 1342-1881/? D/Avrcp: AudioManager Player: ID:31 -- type:android.media.SoundPool -- u/pid:1027/2374 -- state:idle -- attr:AudioAttributes: usage=USAGE_NOTIFICATION content=CONTENT_TYPE_SONIFICATION flags=0x0 tags= bundle=null
01-03 14:00:50.321 1342-1881/? D/Avrcp: AudioManager Player: ID:2431 -- type:android.media.MediaPlayer -- u/pid:10035/8516 -- state:idle -- attr:AudioAttributes: usage=USAGE_UNKNOWN content=CONTENT_TYPE_UNKNOWN flags=0x0 tags= bundle=null
01-03 14:00:50.321 1342-1881/? D/Avrcp: AudioManager Player: ID:2447 -- type:android.media.MediaPlayer -- u/pid:10043/1393 -- state:stopped -- attr:AudioAttributes: usage=USAGE_NOTIFICATION content=CONTENT_TYPE_SONIFICATION flags=0x0 tags= bundle=null
01-03 14:00:50.321 1342-1881/? D/Avrcp: AudioManager Player: ID:2527 -- type:OpenSL ES AudioPlayer (Buffer Queue) -- u/pid:10324/14820 -- state:started -- attr:AudioAttributes: usage=USAGE_MEDIA content=CONTENT_TYPE_UNKNOWN flags=0x0 tags= bundle=null
01-03 14:00:50.321 1342-1881/? D/Avrcp: AudioManager isPlaying: true
01-03 14:00:50.322 656-656/? W//system/bin/hw/android.hidl.allocator@1.0-service: ashmem_create_region(3840) returning hidl_memory(0x7d5f82b330, 3840)
01-03 14:00:50.323 656-656/? W//system/bin/hw/android.hidl.allocator@1.0-service: ashmem_create_region(3840) returning hidl_memory(0x7d5f82b330, 3840)
01-03 14:00:50.332 658-22045/? E/volume_listener: check_and_set_gain_dep_cal: Failed to set gain dep cal level
01-03 14:00:50.333 1342-1881/? E/Avrcp: play status change 2➡1 mPlayStatusChangedNT: 1
01-03 14:00:50.334 1342-1881/? E/bt_btif: register_notification_rsp: Avrcp device is not connected, handle: 0x0
01-03 14:00:50.334 1342-1881/? D/Avrcp: sendPlayPosNotificationRsp: Not registered or requesting.
01-03 14:00:50.334 1950-1952/? E/ANDR-PERF-OPTSHANDLER: Warning: Resource [2, 0] not supported for core 1. Instead use resource for core 0
01-03 14:00:50.334 658-9407/? I/ACDB-LOADER: ACDB AFE returned = -19
01-03 14:00:50.334 1950-1952/? E/ANDR-PERF-RESOURCEQS: Failed to apply optimization [2, 2, 0]
01-03 14:00:50.334 658-9407/? D/audio_hw_primary: enable_audio_route: usecase(5) apply and update mixer path: audio-ull-playback speaker
01-03 14:00:50.334 658-9407/? D/audio_route: Apply path: audio-ull-playback speaker
01-03 14:00:50.342 658-9407/? D/audio_hw_primary: out_write: retry previous failed cal level set
01-03 14:00:50.354 723-830/? I/ThermalEngine: vs_get_temperature: read[0] tsens_tz_sensor15 49000 mC, weight[0] 1
01-03 14:00:50.354 723-830/? I/ThermalEngine: vs_get_temperature: read[1] tsens_tz_sensor0 54000 mC, weight[1] -1
01-03 14:00:50.383 1543-1543/? D/zz: UtWallpaperService$UtEngine.onVisibilityChanged() false
01-03 14:00:50.386 1543-1543/? D/zz: UtRenderer.onNotVisible()
01-03 14:00:50.504 2331-2331/? I/PBSessionCacheImpl: Deleted sessionId[8605084760413] from persistence.
01-03 14:00:50.533 868-1542/? I/WifiService: getWifiEnabledState uid=10048
01-03 14:00:50.550 2331-2331/? W/SearchService: Abort, client detached.
01-03 14:00:51.356 723-830/? I/ThermalEngine: vs_get_temperature: read[0] tsens_tz_sensor15 50000 mC, weight[0] 1
01-03 14:00:51.356 723-830/? I/ThermalEngine: vs_get_temperature: read[1] tsens_tz_sensor0 54000 mC, weight[1] -1
01-03 14:00:52.357 723-830/? I/ThermalEngine: vs_get_temperature: read[0] tsens_tz_sensor15 49000 mC, weight[0] 1
01-03 14:00:52.357 723-830/? I/ThermalEngine: vs_get_temperature: read[1] tsens_tz_sensor0 53000 mC, weight[1] -1
01-03 14:00:52.979 868-894/? W/SensorService: sensor 00000001 already enabled in connection 0x782da33f00 (ignoring)
01-03 14:00:53.116 658-22045/? D/audio_hw_primary: disable_audio_route: usecase(1) reset and update mixer path: low-latency-playback speaker
01-03 14:00:53.154 14820-14836/? E/Unity: AndroidJavaException: java.lang.NoSuchFieldError: no "Ljava/lang/Object;" field "instance" in class "Lcom/test/camerapreview/NativeCamera;" or its superclasses
java.lang.NoSuchFieldError: no "Ljava/lang/Object;" field "instance" in class "Lcom/test/camerapreview/NativeCamera;" or its superclasses
at com.unity3d.player.UnityPlayer.nativeRender(Native Method)
at com.unity3d.player.UnityPlayer.c(Unknown Source:0)
at com.unity3d.player.UnityPlayer$c$1.handleMessage(Unknown Source:151)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:164)
at com.unity3d.player.UnityPlayer$c.run(Unknown Source:20)
at UnityEngine.AndroidJNISafe.CheckException () [0x00000] in <filename unknown>:0
at UnityEngine.AndroidJNISafe.GetStaticFieldID (IntPtr clazz, System.String name, System.String sig) [0x00000] in <filename unknown>:0
at UnityEngine._AndroidJNIHelper.GetFieldID (IntPtr jclass, System.String fieldName, System.String signature, Boolean isStatic) [0x00000] in <filena
它抱怨在 Unity 调用的 Setup 函数中设置的名为 instance 的变量。没有这个变量，我的插件就可以工作。有了它，它就会崩溃。
我也对我的 build.gradle 文件进行了更改。在这里。
apply plugin: 'com.android.library'
android
compileSdkVersion 25
buildToolsVersion "25.0.3"
defaultConfig
minSdkVersion 18
targetSdkVersion 25
versionCode 1
versionName "1.0"
buildTypes
release
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
dependencies
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.google.android.gms:play-services-vision:9.4.0+' // I added this line.
provided files('./libs/UnityPlayer.jar')
compile files('libs/gson-2.8.2.jar')
android.libraryVariants.all variant ->
// Task names.
String variantName = "$variant.name.capitalize()"; // Like 'Debug'
String deployTaskGroup = "plugin";
String deployTaskName = "deploy$variantNamePluginArchive"; // Like 'deployDebugPluginArchive'
String dependencyTaskName = "assemble$variantName"; // Like 'assembleDebug'
// Source.
String sourceAARFolder = "$buildDir.getPath()/outputs/aar/";
String sourceAARName = "$project.name-$variant.name.aar";
// Target.
String targetAARFolder = "../../../Assets/Plugins/Android"; // Navigate into 'Assets'
String targetAARName = "Native Camera.aar"; // The form you ship your plugin
// Create task.
task(deployTaskName, dependsOn: dependencyTaskName, type: Copy)
from(sourceAARFolder)
into(targetAARFolder)
include(sourceAARName)
rename(sourceAARName, targetAARName)
.group = deployTaskGroup;
我加了一行
compile 'com.google.android.gms:play-services-vision:9.4.0+'
更新
我尝试将变量从实例重命名为 mInstance，但我遇到了同样的问题。然后我尝试在函数中创建变量并返回它。现在我有一个更直观的错误日志，我不知道如何修复。
01-03 14:38:32.505 19629-19646/? E/Unity: AndroidJavaException: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/vision/face/FaceDetector;
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/vision/face/FaceDetector;
at java.lang.reflect.Executable.getMethodReturnTypeInternal(Native Method)
at java.lang.reflect.Method.getReturnType(Method.java:141)
at java.lang.Class.getDeclaredMethods(Class.java:1880)
at com.unity3d.player.ReflectionHelper.getMethodID(Unknown Source:63)
at com.unity3d.player.UnityPlayer.nativeRender(Native Method)
at com.unity3d.player.UnityPlayer.c(Unknown Source:0)
at com.unity3d.player.UnityPlayer$c$1.handleMessage(Unknown Source:151)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:164)
at com.unity3d.player.UnityPlayer$c.run(Unknown Source:20)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.vision.face.FaceDetector" on path: DexPathList[[zip file "/data/app/com.tvgla.campreview-C0
谢谢 约翰·劳里
【问题讨论】：
您找到解决此问题的方法了吗？我在应用计费库中也遇到了类似的问题。 【参考方案1】：然而，我遇到了同样的问题，这是因为我将带有 Gson 代码的自定义库作为 .aar 包含在一个 android 应用程序项目中。并且由于 .aar 文件不传播依赖项transitively，我在我的应用程序项目中收到 Gson 类的错误，在应用程序项目中导入 gson 解决了这个问题！
Proguard：如果您使用 proguard 来混淆代码，请确保为 gson 添加适当的规则，可以在 here
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