Java 未满足链接错误：未找到本机方法findLibrary返回null

我正在从事与安卓JNI和NDK相关的安卓项目。我已经加载了项目所需的所有.so文件。但是仍然显示未满足链接错误的错误， 未找到本机方法， findLibrary返回null， java.lang.Runtime，

我的日志图像如下所示

从图中可以清楚地看到。添加了库，但为什么会给出错误

还有一个文件在Utilities.java文件中声明了本机函数

我的代码是

package me.frankly.utils;

import java.nio.ByteBuffer;

import android.util.Log;

public class Utilities {

    static
    {
        try
        {

            System.loadLibrary("videocompression");

        }
        catch(Exception e)
        {
            Log.d("Exception",e.toString());
        }
    }

    public native static int convertVideoFrame(ByteBuffer src, ByteBuffer dest,
            int destFormat, int width, int height, int padding, int swap);

    }

本机代码：

#include <jni.h>
#include <libyuv.h>
#include <utils.h>

enum COLOR_FORMATTYPE {
    COLOR_FormatMonochrome = 1,
    COLOR_Format8bitRGB332 = 2,
    COLOR_Format12bitRGB444 = 3,
    COLOR_Format16bitARGB4444 = 4,
    COLOR_Format16bitARGB1555 = 5,
    COLOR_Format16bitRGB565 = 6,
    COLOR_Format16bitBGR565 = 7,
    COLOR_Format18bitRGB666 = 8,
    COLOR_Format18bitARGB1665 = 9,
    COLOR_Format19bitARGB1666 = 10,
    COLOR_Format24bitRGB888 = 11,
    COLOR_Format24bitBGR888 = 12,
    COLOR_Format24bitARGB1887 = 13,
    COLOR_Format25bitARGB1888 = 14,
    COLOR_Format32bitBGRA8888 = 15,
    COLOR_Format32bitARGB8888 = 16,
    COLOR_FormatYUV411Planar = 17,
    COLOR_FormatYUV411PackedPlanar = 18,
    COLOR_FormatYUV420Planar = 19,
    COLOR_FormatYUV420PackedPlanar = 20,
    COLOR_FormatYUV420SemiPlanar = 21,
    COLOR_FormatYUV422Planar = 22,
    COLOR_FormatYUV422PackedPlanar = 23,
    COLOR_FormatYUV422SemiPlanar = 24,
    COLOR_FormatYCbYCr = 25,
    COLOR_FormatYCrYCb = 26,
    COLOR_FormatCbYCrY = 27,
    COLOR_FormatCrYCbY = 28,
    COLOR_FormatYUV444Interleaved = 29,
    COLOR_FormatRawBayer8bit = 30,
    COLOR_FormatRawBayer10bit = 31,
    COLOR_FormatRawBayer8bitcompressed = 32,
    COLOR_FormatL2 = 33,
    COLOR_FormatL4 = 34,
    COLOR_FormatL8 = 35,
    COLOR_FormatL16 = 36,
    COLOR_FormatL24 = 37,
    COLOR_FormatL32 = 38,
    COLOR_FormatYUV420PackedSemiPlanar = 39,
    COLOR_FormatYUV422PackedSemiPlanar = 40,
    COLOR_Format18BitBGR666 = 41,
    COLOR_Format24BitARGB6666 = 42,
    COLOR_Format24BitABGR6666 = 43,

    COLOR_TI_FormatYUV420PackedSemiPlanar = 0x7f000100,
    COLOR_FormatSurface = 0x7F000789,
    COLOR_QCOM_FormatYUV420SemiPlanar = 0x7fa30c00
};

int isSemiPlanarYUV(int colorFormat) {
    switch (colorFormat) {
    case COLOR_FormatYUV420Planar:
    case COLOR_FormatYUV420PackedPlanar:
        return 0;
    case COLOR_FormatYUV420SemiPlanar:
    case COLOR_FormatYUV420PackedSemiPlanar:
    case COLOR_TI_FormatYUV420PackedSemiPlanar:
        return 1;
    default:
        return 0;
    }
}

JNIEXPORT int Java_me_frankly_utils_Utilities_convertVideoFrame(
        JNIEnv *env, jclass class, jobject src, jobject dest, int destFormat,
        int width, int height, int padding, int swap)
    {
    if (!src || !dest || !destFormat) {
        return 0;
    }

    jbyte *srcBuff = (*env)->GetDirectBufferAddress(env, src);
    jbyte *destBuff = (*env)->GetDirectBufferAddress(env, dest);

    int half_width = (width + 1) / 2;
    int half_height = (height + 1) / 2;

    if (!isSemiPlanarYUV(destFormat))
    {
        if (!swap)
        {
            ARGBToI420(srcBuff, width * 4, destBuff, width,
                    destBuff + width * height + half_width * half_height
                            + padding * 5 / 4, half_width,
                    destBuff + width * height + padding, half_width, width,
                    height);
        }
        else
        {
            ARGBToI420(srcBuff, width * 4, destBuff, width,
                    destBuff + width * height + padding, half_width,
                    destBuff + width * height + half_width * half_height
                            + padding * 5 / 4, half_width, width, height);
        }
    }
    else
    {
        if (!swap)
        {
            ARGBToNV21(srcBuff, width * 4, destBuff, width,
                    destBuff + width * height + padding, half_width * 2, width,
                    height);
        }
        else
        {
            ARGBToNV12(srcBuff, width * 4, destBuff, width,
                    destBuff + width * height + padding, half_width * 2, width,
                    height);
        }
    }

    return 1;
}

---

评论不用于扩展讨论；此对话已结束。未满足的链接错误由此解决。请使用“ndk_Build”重新生成.so文件

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class me_frankly_utils_Utilities */

#ifndef _Included_me_frankly_utils_Utilities
#define _Included_me_frankly_utils_Utilities
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     me_frankly_utils_Utilities
 * Method:    convertVideoFrame
 * Signature: (Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;IIIII)I
 */
JNIEXPORT jint JNICALL Java_me_frankly_utils_Utilities_convertVideoFrame
  (JNIEnv *, jclass, jobject, jobject, jint, jint, jint, jint, jint);

#ifdef __cplusplus
}
#endif
#endif

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_PRELINK_MODULE := false
LOCAL_MODULE    :=  videocompression
LOCAL_CFLAGS    := -w -std=gnu99 -O2 -DNULL=0 -DSOCKLEN_T=socklen_t -DLOCALE_NOT_USED -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
LOCAL_CFLAGS    += -Drestrict='' -D__EMX__ -DOPUS_BUILD -DFIXED_POINT -DUSE_ALLOCA -DHAVE_LRINT -DHAVE_LRINTF -fno-math-errno
LOCAL_CFLAGS    += -DANDROID_NDK -DDISABLE_IMPORTGL -fno-strict-aliasing -fprefetch-loop-arrays -DAVOID_TABLES -DANDROID_TILE_BASED_DECODE -DANDROID_ARMV6_IDCT
LOCAL_CPPFLAGS  := -DBSD=1 -ffast-math -O2 -funroll-loops
#LOCAL_LDLIBS   := -llog
LOCAL_LDLIBS    := -ljnigraphics -llog

LOCAL_SRC_FILES     := \
./opus/src/opus.c \
./opus/src/opus_decoder.c \
./opus/src/opus_encoder.c \
./opus/src/opus_multistream.c \
./opus/src/opus_multistream_encoder.c \
./opus/src/opus_multistream_decoder.c \
./opus/src/repacketizer.c \
./opus/src/analysis.c \
./opus/src/mlp.c \
./opus/src/mlp_data.c

LOCAL_SRC_FILES     += \
./opus/silk/CNG.c \
./opus/silk/code_signs.c \
./opus/silk/init_decoder.c \
./opus/silk/decode_core.c \
./opus/silk/decode_frame.c \
./opus/silk/decode_parameters.c \
./opus/silk/decode_indices.c \
./opus/silk/decode_pulses.c \
./opus/silk/decoder_set_fs.c \
./opus/silk/dec_API.c \
./opus/silk/enc_API.c \
./opus/silk/encode_indices.c \
./opus/silk/encode_pulses.c \
./opus/silk/gain_quant.c \
./opus/silk/interpolate.c \
./opus/silk/LP_variable_cutoff.c \
./opus/silk/NLSF_decode.c \
./opus/silk/NSQ.c \
./opus/silk/NSQ_del_dec.c \
./opus/silk/PLC.c \
./opus/silk/shell_coder.c \
./opus/silk/tables_gain.c \
./opus/silk/tables_LTP.c \
./opus/silk/tables_NLSF_CB_NB_MB.c \
./opus/silk/tables_NLSF_CB_WB.c \
./opus/silk/tables_other.c \
./opus/silk/tables_pitch_lag.c \
./opus/silk/tables_pulses_per_block.c \
./opus/silk/VAD.c \
./opus/silk/control_audio_bandwidth.c \
./opus/silk/quant_LTP_gains.c \
./opus/silk/VQ_WMat_EC.c \
./opus/silk/HP_variable_cutoff.c \
./opus/silk/NLSF_encode.c \
./opus/silk/NLSF_VQ.c \
./opus/silk/NLSF_unpack.c \
./opus/silk/NLSF_del_dec_quant.c \
./opus/silk/process_NLSFs.c \
./opus/silk/stereo_LR_to_MS.c \
./opus/silk/stereo_MS_to_LR.c \
./opus/silk/check_control_input.c \
./opus/silk/control_SNR.c \
./opus/silk/init_encoder.c \
./opus/silk/control_codec.c \
./opus/silk/A2NLSF.c \
./opus/silk/ana_filt_bank_1.c \
./opus/silk/biquad_alt.c \
./opus/silk/bwexpander_32.c \
./opus/silk/bwexpander.c \
./opus/silk/debug.c \
./opus/silk/decode_pitch.c \
./opus/silk/inner_prod_aligned.c \
./opus/silk/lin2log.c \
./opus/silk/log2lin.c \
./opus/silk/LPC_analysis_filter.c \
./opus/silk/LPC_inv_pred_gain.c \
./opus/silk/table_LSF_cos.c \
./opus/silk/NLSF2A.c \
./opus/silk/NLSF_stabilize.c \
./opus/silk/NLSF_VQ_weights_laroia.c \
./opus/silk/pitch_est_tables.c \
./opus/silk/resampler.c \
./opus/silk/resampler_down2_3.c \
./opus/silk/resampler_down2.c \
./opus/silk/resampler_private_AR2.c \
./opus/silk/resampler_private_down_FIR.c \
./opus/silk/resampler_private_IIR_FIR.c \
./opus/silk/resampler_private_up2_HQ.c \
./opus/silk/resampler_rom.c \
./opus/silk/sigm_Q15.c \
./opus/silk/sort.c \
./opus/silk/sum_sqr_shift.c \
./opus/silk/stereo_decode_pred.c \
./opus/silk/stereo_encode_pred.c \
./opus/silk/stereo_find_predictor.c \
./opus/silk/stereo_quant_pred.c

LOCAL_SRC_FILES     += \
./opus/silk/fixed/LTP_analysis_filter_FIX.c \
./opus/silk/fixed/LTP_scale_ctrl_FIX.c \
./opus/silk/fixed/corrMatrix_FIX.c \
./opus/silk/fixed/encode_frame_FIX.c \
./opus/silk/fixed/find_LPC_FIX.c \
./opus/silk/fixed/find_LTP_FIX.c \
./opus/silk/fixed/find_pitch_lags_FIX.c \
./opus/silk/fixed/find_pred_coefs_FIX.c \
./opus/silk/fixed/noise_shape_analysis_FIX.c \
./opus/silk/fixed/prefilter_FIX.c \
./opus/silk/fixed/process_gains_FIX.c \
./opus/silk/fixed/regularize_correlations_FIX.c \
./opus/silk/fixed/residual_energy16_FIX.c \
./opus/silk/fixed/residual_energy_FIX.c \
./opus/silk/fixed/solve_LS_FIX.c \
./opus/silk/fixed/warped_autocorrelation_FIX.c \
./opus/silk/fixed/apply_sine_window_FIX.c \
./opus/silk/fixed/autocorr_FIX.c \
./opus/silk/fixed/burg_modified_FIX.c \
./opus/silk/fixed/k2a_FIX.c \
./opus/silk/fixed/k2a_Q16_FIX.c \
./opus/silk/fixed/pitch_analysis_core_FIX.c \
./opus/silk/fixed/vector_ops_FIX.c \
./opus/silk/fixed/schur64_FIX.c \
./opus/silk/fixed/schur_FIX.c

LOCAL_SRC_FILES     += \
./opus/celt/bands.c \
./opus/celt/celt.c \
./opus/celt/celt_encoder.c \
./opus/celt/celt_decoder.c \
./opus/celt/cwrs.c \
./opus/celt/entcode.c \
./opus/celt/entdec.c \
./opus/celt/entenc.c \
./opus/celt/kiss_fft.c \
./opus/celt/laplace.c \
./opus/celt/mathops.c \
./opus/celt/mdct.c \
./opus/celt/modes.c \
./opus/celt/pitch.c \
./opus/celt/celt_lpc.c \
./opus/celt/quant_bands.c \
./opus/celt/rate.c \
./opus/celt/vq.c \
./opus/celt/arm/armcpu.c \
./opus/celt/arm/arm_celt_map.c

LOCAL_SRC_FILES     += \
./opus/ogg/bitwise.c \
./opus/ogg/framing.c \
./opus/opusfile/info.c \
./opus/opusfile/internal.c \
./opus/opusfile/opusfile.c \
./opus/opusfile/stream.c





LOCAL_C_INCLUDES    := \
./opus/include \
./opus/silk \
./opus/silk/fixed \
./opus/celt \
./opus/ \
./opus/opusfile \
./libyuv/include

LOCAL_SRC_FILES     += \
./libjpeg/jcapimin.c \
./libjpeg/jcapistd.c \
./libjpeg/armv6_idct.S \
./libjpeg/jccoefct.c \
./libjpeg/jccolor.c \
./libjpeg/jcdctmgr.c \
./libjpeg/jchuff.c \
./libjpeg/jcinit.c \
./libjpeg/jcmainct.c \
./libjpeg/jcmarker.c \
./libjpeg/jcmaster.c \
./libjpeg/jcomapi.c \
./libjpeg/jcparam.c \
./libjpeg/jcphuff.c \
./libjpeg/jcprepct.c \
./libjpeg/jcsample.c \
./libjpeg/jctrans.c \
./libjpeg/jdapimin.c \
./libjpeg/jdapistd.c \
./libjpeg/jdatadst.c \
./libjpeg/jdatasrc.c \
./libjpeg/jdcoefct.c \
./libjpeg/jdcolor.c \
./libjpeg/jddctmgr.c \
./libjpeg/jdhuff.c \
./libjpeg/jdinput.c \
./libjpeg/jdmainct.c \
./libjpeg/jdmarker.c \
./libjpeg/jdmaster.c \
./libjpeg/jdmerge.c \
./libjpeg/jdphuff.c \
./libjpeg/jdpostct.c \
./libjpeg/jdsample.c \
./libjpeg/jdtrans.c \
./libjpeg/jerror.c \
./libjpeg/jfdctflt.c \
./libjpeg/jfdctfst.c \
./libjpeg/jfdctint.c \
./libjpeg/jidctflt.c \
./libjpeg/jidctfst.c \
./libjpeg/jidctint.c \
./libjpeg/jidctred.c \
./libjpeg/jmemmgr.c \
./libjpeg/jmemnobs.c \
./libjpeg/jquant1.c \
./libjpeg/jquant2.c \
./libjpeg/jutils.c

LOCAL_SRC_FILES     += \
./libyuv/source/compare_common.cc \
./libyuv/source/compare_neon.cc \
./libyuv/source/compare_posix.cc \
./libyuv/source/compare_win.cc \
./libyuv/source/compare.cc \
./libyuv/source/convert_argb.cc \
./libyuv/source/convert_from_argb.cc \
./libyuv/source/convert_from.cc \
./libyuv/source/convert_jpeg.cc \
./libyuv/source/convert_to_argb.cc \
./libyuv/source/convert_to_i420.cc \
./libyuv/source/convert.cc \
./libyuv/source/cpu_id.cc \
./libyuv/source/format_conversion.cc \
./libyuv/source/mjpeg_decoder.cc \
./libyuv/source/mjpeg_validate.cc \
./libyuv/source/planar_functions.cc \
./libyuv/source/rotate_argb.cc \
./libyuv/source/rotate_mips.cc \
./libyuv/source/rotate_neon.cc \
./libyuv/source/rotate_neon64.cc \
./libyuv/source/rotate.cc \
./libyuv/source/row_any.cc \
./libyuv/source/row_common.cc \
./libyuv/source/row_mips.cc \
./libyuv/source/row_neon.cc \
./libyuv/source/row_neon64.cc \
./libyuv/source/row_posix.cc \
./libyuv/source/row_win.cc \
./libyuv/source/scale_argb.cc \
./libyuv/source/scale_common.cc \
./libyuv/source/scale_mips.cc \
./libyuv/source/scale_neon.cc \
./libyuv/source/scale_neon64.cc \
./libyuv/source/scale_posix.cc \
./libyuv/source/scale_win.cc \
./libyuv/source/scale.cc \
./libyuv/source/video_common.cc

LOCAL_SRC_FILES     += \
./jni.c \
./audio.c \
./utils.c \
./image.c \
./video.c \
./fake.c

include $(BUILD_SHARED_LIBRARY)