我在Python上有一些现有代码，并希望使用Kivy和Buildozer将其移植到android。 但是，我对本地android类“ Visualizer”有依赖性。 我的应用程序正确启动，但是当我在应用程序中单击“运行”按钮时，当我在Java中使用以下代码时会出现此错误
new Visualizer(0);
或
Visualizer = autoclass('[visualizer.class.....]')
v = Visualizer(0)
在python中
我授予了所有必需的运行时权限，例如RECORD_AUDIO，MODIFY_AUDIO和INTERNET
ERROR:
06-18 11:25:46.852 24619 24619 D VisualDj: Called set_on_data_capture_listener
06-18 11:25:46.892 24619 24619 D VisualDj: setPlayer1
06-18 11:25:46.968 24622 24622 I crash_dump32: performing dump of process 24619 (target tid = 24619)
06-18 11:25:46.969 24622 24622 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
06-18 11:25:46.969 24622 24622 F DEBUG : Build fingerprint: 'HONOR/PRA-TL10/HWPRA-H:8.0.0/HONORPRA-TL10/373(C10):user/release-keys'
06-18 11:25:46.969 24622 24622 F DEBUG : Revision: '0'
06-18 11:25:46.969 24622 24622 F DEBUG : ABI: 'arm'
06-18 11:25:46.969 24622 24622 F DEBUG : pid: 24619, tid: 24619, name: SDLThread >>> org.vd.visualdj <<<
06-18 11:25:46.969 24622 24622 F DEBUG : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0xd03a6020
06-18 11:25:46.969 24622 24622 F DEBUG : r0 00000000 r1 00000001 r2 00000000 r3 00000000
06-18 11:25:46.969 24622 24622 F DEBUG : r4 ef6e4540 r5 d03a6020 r6 00000018 r7 d03a6008
06-18 11:25:46.969 24622 24622 F DEBUG : r8 cd7f3dbc r9 cd7f3dbc sl 80047204 fp 00000000
06-18 11:25:46.969 24622 24622 F DEBUG : ip f50f0d94 sp cd7f3c88 lr f50cfc65 pc f50cf23a cpsr 600b0030
06-18 11:25:47.268 24622 24622 F DEBUG :
06-18 11:25:47.268 24622 24622 F DEBUG : backtrace:
06-18 11:25:47.268 24622 24622 F DEBUG : #00 pc 0005223a /system/lib/libbinder.so (_ZN7android6Parcel19ipcSetDataReferenceEPKhjPKyjPFvPS0_S2_jS4_jPvES6_+61)
06-18 11:25:47.268 24622 24622 F DEBUG : #01 pc 00049347 /system/lib/libbinder.so (_ZN7android14IPCThreadState15waitForResponseEPNS_6ParcelEPi+350)
06-18 11:25:47.268 24622 24622 F DEBUG : #02 pc 00048fd1 /system/lib/libbinder.so (_ZN7android14IPCThreadState8transactEijRKNS_6ParcelEPS1_j+152)
06-18 11:25:47.268 24622 24622 F DEBUG : #03 pc 000419d1 /system/lib/libbinder.so (_ZN7android8BpBinder8transactEjRKNS_6ParcelEPS1_j+36)
06-18 11:25:47.268 24622 24622 F DEBUG : #04 pc 0004bba3 /system/lib/libbinder.so (_ZNK7android16BpServiceManager12checkServiceERKNS_8String16E+74)
06-18 11:25:47.268 24622 24622 F DEBUG : #05 pc 0004bacb /system/lib/libbinder.so (_ZNK7android16BpServiceManager10getServiceERKNS_8String16E+190)
06-18 11:25:47.268 24622 24622 F DEBUG : #06 pc 0002ba6d /system/lib/libaudioclient.so (_ZN7android11AudioSystem17get_audio_flingerEv+144)
06-18 11:25:47.268 24622 24622 F DEBUG : #07 pc 000276cd /system/lib/libaudioclient.so (_ZN7android11AudioEffect3setEPK12audio_uuid_sS3_iPFviPvS4_ES4_15audio_session_ti+60)
06-18 11:25:47.268 24622 24622 F DEBUG : #08 pc 0002767d /system/lib/libaudioclient.so (_ZN7android11AudioEffectC1EPK12audio_uuid_sRKNS_8String16ES3_iPFviPvS7_ES7_15audio_session_ti+88)
06-18 11:25:47.268 24622 24622 F DEBUG : #09 pc 000814e5 /system/lib/libmedia.so (_ZN7android10VisualizerC1ERKNS_8String16EiPFviPvS4_ES4_15audio_session_t+44)
06-18 11:25:47.268 24622 24622 F DEBUG : #10 pc 000033bd /system/lib/libaudioeffect_jni.so (_ZL37android_media_visualizer_native_setupP7_JNIEnvP8_jobjectS2_iP10_jintArrayP8_jstring+196)
06-18 11:25:47.268 24622 24622 F DEBUG : #11 pc 00cbfc27 /system/framework/arm/boot-framework.oat (offset 0x5f6000) (android.media.audiofx.Visualizer.native_setup+150)
06-18 11:25:47.268 24622 24622 F DEBUG : #12 pc 003e0931 /system/lib/libart.so (art_quick_invoke_stub_internal+64)
06-18 11:25:47.268 24622 24622 F DEBUG : #13 pc 003e4ea3 /system/lib/libart.so (art_quick_invoke_stub+226)
06-18 11:25:47.268 24622 24622 F DEBUG : #14 pc 000ac2d9 /system/lib/libart.so (_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+140)
06-18 11:25:47.268 24622 24622 F DEBUG : #15 pc 001f27fb /system/lib/libart.so (_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPKNS_7DexFile8CodeItemEPNS_11ShadowFrameEPNS_6JValueE+238)
06-18 11:25:47.268 24622 24622 F DEBUG : #16 pc 001edd71 /system/lib/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+576)
06-18 11:25:47.268 24622 24622 F DEBUG : #17 pc 003cb72d /system/lib/libart.so (MterpInvokeDirect+356)
06-18 11:25:47.268 24622 24622 F DEBUG : #18 pc 003d2d14 /system/lib/libart.so (ExecuteMterpImpl+14484)
06-18 11:25:47.268 24622 24622 F DEBUG : #19 pc 001d5351 /system/lib/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadEPKNS_7DexFile8CodeItemERNS_11ShadowFrameENS_6JValueEb+340)
06-18 11:25:47.268 24622 24622 F DEBUG : #20 pc 001da6a3 /system/lib/libart.so (_ZN3art11interpreter33ArtInterpreterToInterpreterBridgeEPNS_6ThreadEPKNS_7DexFile8CodeItemEPNS_11ShadowFrameEPNS_6JValueE+142)
06-18 11:25:47.268 24622 24622 F DEBUG : #21 pc 001edd5b /system/lib/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+554)
06-18 11:25:47.268 24622 24622 F DEBUG : #22 pc 003cb72d /system/lib/libart.so (MterpInvokeDirect+356)
06-18 11:25:47.268 24622 24622 F DEBUG : #23 pc 003d2d14 /system/lib/libart.so (ExecuteMterpImpl+14484)
06-18 11:25:47.268 24622 24622 F DEBUG : #24 pc 001d5351 /system/lib/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadEPKNS_7DexFile8CodeItemERNS_11ShadowFrameENS_6JValueEb+340)
06-18 11:25:47.268 24622 24622 F DEBUG : #25 pc 001da5f1 /system/lib/libart.so (_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadEPKNS_7DexFile8CodeItemEPNS_11ShadowFrameE+92)
06-18 11:25:47.268 24622 24622 F DEBUG : #26 pc 003c0fbd /system/lib/libart.so (artQuickToInterpreterBridge+944)
06-18 11:25:47.268 24622 24622 F DEBUG : #27 pc 003e46f1 /system/lib/libart.so (art_quick_to_interpreter_bridge+32)
06-18 11:25:47.268 24622 24622 F DEBUG : #28 pc 003e0931 /system/lib/libart.so (art_quick_invoke_stub_internal+64)
06-18 11:25:47.268 24622 24622 F DEBUG : #29 pc 003e4ea3 /system/lib/libart.so (art_quick_invoke_stub+226)
06-18 11:25:47.268 24622 24622 F DEBUG : #30 pc 000ac2d9 /system/lib/libart.so (_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+140)
06-18 11:25:47.268 24622 24622 F DEBUG : #31 pc 00334bb1 /system/lib/libart.so (_ZN3artL18InvokeWithArgArrayERKNS_33ScopedObjectAccessAlreadyRunnableEPNS_9ArtMethodEPNS_8ArgArrayEPNS_6JValueEPKc+52)
06-18 11:25:47.268 24622 24622 F DEBUG : #32 pc 00335a2d /system/lib/libart.so (_ZN3art35InvokeVirtualOrInterfaceWithJValuesERKNS_33ScopedObjectAccessAlreadyRunnableEP8_jobjectP10_jmethodIDP6jvalue+320)
06-18 11:25:47.268 24622 24622 F DEBUG : #33 pc 0026d77d /system/lib/libart.so (_ZN3art3JNI15CallVoidMethodAEP7_JNIEnvP8_jobjectP10_jmethodIDP6jvalue+436)
06-18 11:25:47.268 24622 24622 F DEBUG : #34 pc 00036b4f /data/data/org.vd.visualdj/files/app/_python_bundle/site-packages/jnius/jnius.so
Python类（看起来错误不在这里）
import numpy as np
from jnius import autoclass, PythonJavaClass
from jnius.signatures import java_method
Log = autoclass('android.util.Log')
BaseAudio = autoclass('org.vd.VisualDj.BaseAudio')
base_audio = BaseAudio()
def set_on_data_capture_listener(callback):
Log.d('VisualDj', 'Called set_on_data_capture_listener')
class AudioListener(PythonJavaClass):
__javainterfaces__ = ['android.media.audiofx.Visualizer$OnDataCaptureListener']
@java_method('(Landroid/media/audiofx/Visualizer;[BI)V')
def onWaveFormDataCapture(self, v, bytes, samplingRate):
Log.d('VisualDj', 'Inside wave capture')
try:
y = np.asarray(bytes)
y = y.astype(np.float32)
callback(y)
except IOError:
print('IOError')
@java_method('(Landroid/media/audiofx/Visualizer;[BI)V')
def onFftDataCapture(self, v, bytes, samplingRate):
pass
base_audio.setPlayer(AudioListener())
Java类
public class BaseAudio {
protected Visualizer visualizer;
public void setPlayer(OnDataCaptureListener listener) {
Log.d("VisualDj", "setPlayer1"); // This goes well
try{
visualizer = new Visualizer(0); // But this fails
Log.d("VisualDj", "setPlayer0");
visualizer.setCaptureSize(256);
Log.d("VisualDj", "setPlayer2");
visualizer.setDataCaptureListener((OnDataCaptureListener)listener, 12000, true, false);
Log.d("VisualDj", "setPlayer3");
visualizer.setEnabled(true);
Log.d("VisualDj", "setPlayer4");
}
catch(Exception e){
Log.e("VisualDj", "exception", e);
}
}
public void release() {
visualizer.release();
}
}
My Buildozer config:
# (int) Target Android API, should be as high as possible.
android.api = 27
# (int) Minimum API your APK will support.
android.minapi = 21
# (int) Android SDK version to use
android.sdk = 27
# (str) Android NDK version to use
android.ndk = 17c
# (int) Android NDK API to use. This is the minimum API your app will support, it should usually match android.minapi.
android.ndk_api = 21
已编辑
我也忘了提到通过Android Studio进行部署时，上面提到的java类很好用