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android O 32位系统报错：JNI DETECTED ERROR IN APPLICATION: use of deleted local reference

作者：weixin_40725706 | 2024-02-28 10:11:15

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jni detected error in application: use of deleted local reference

一、同样的程序我在android O 64位系统上跑没有任何问题，但是在32位系统上跑就报这个错误
问题原因是：
自己写的类中有这个构造函数：
public AnWBT_BLE_Service(int service_type, long mostSiguuid, long leastSiguuid, int handle, int end_group_handle, ArrayList<AnWBT_BLE_Characteristic> characteristic) {
    this.service_type = service_type;
    this.mostSiguuid = mostSiguuid;
    this.leastSiguuid = leastSiguuid;
    this.handle = handle;
    this.end_group_handle = end_group_handle;
    this.characteristic = characteristic;
}
然后再JNI调用这个构造函数：
jmethodID service_init = env->GetMethodID(service_cls,"<init>","(IJJIILjava/util/ArrayList;)V");
这种调用方式就会有问题。
二、修改方法：使用没有参数的构造函数，然后使用set方法来设置类里面的成员变量
jclass service_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Service");
jmethodID service_init = env->GetMethodID(service_cls,"<init>","()V");
jmethodID service_setService_type = env->GetMethodID(service_cls,"setService_type","(I)V");
jmethodID service_setMostSiguuid = env->GetMethodID(service_cls,"setMostSiguuid","(J)V");
jmethodID service_setLeastSiguuid = env->GetMethodID(service_cls,"setLeastSiguuid","(J)V");
jmethodID service_setHandle = env->GetMethodID(service_cls,"setHandle","(I)V");
jmethodID service_setEnd_group_handle = env->GetMethodID(service_cls,"setEnd_group_handle","(I)V");
jmethodID service_setCharacteristic = env->GetMethodID(service_cls,"setCharacteristic","(Ljava/util/ArrayList;)V");

三、AnWBT_BLE_Service类的代码

  1. package com.anwsdk.service;
  2.  
  3. import android.os.Parcel;
  4. import android.os.Parcelable;
  5.  
  6. import java.util.ArrayList;
  7. import java.util.List;
  8.  
  9. public class AnWBT_BLE_Service implements Parcelable {
  10.     private int service_type;
  11.     private long mostSiguuid;
  12.     private long leastSiguuid;
  13.     private int handle;
  14.     private int end_group_handle;
  15.     private ArrayList<AnWBT_BLE_Characteristic> characteristic;
  16.  
  17.     public AnWBT_BLE_Service() {
  18.     }
  19.  
  20.     public AnWBT_BLE_Service(int service_type, long mostSiguuid, long leastSiguuid, int handle, int end_group_handle, ArrayList<AnWBT_BLE_Characteristic> characteristic) {
  21.         this.service_type = service_type;
  22.         this.mostSiguuid = mostSiguuid;
  23.         this.leastSiguuid = leastSiguuid;
  24.         this.handle = handle;
  25.         this.end_group_handle = end_group_handle;
  26.         this.characteristic = characteristic;
  27.     }
  28.  
  29.     protected AnWBT_BLE_Service(Parcel in) {
  30.         service_type = in.readInt();
  31.         mostSiguuid = in.readLong();
  32.         leastSiguuid = in.readLong();
  33.         handle = in.readInt();
  34.         end_group_handle = in.readInt();
  35.         ArrayList<AnWBT_BLE_Characteristic> characteristic_new = new ArrayList<AnWBT_BLE_Characteristic>();
  36.         in.readTypedList(characteristic_new,AnWBT_BLE_Characteristic.CREATOR);
  37.         characteristic = characteristic_new;
  38.     }
  39.  
  40.     public int getService_type() {
  41.         return service_type;
  42.     }
  43.  
  44.     public long getMostSiguuid() {
  45.         return mostSiguuid;
  46.     }
  47.  
  48.     public long getLeastSiguuid() {
  49.         return leastSiguuid;
  50.     }
  51.  
  52.     public int getHandle() {
  53.         return handle;
  54.     }
  55.  
  56.     public int getEnd_group_handle() {
  57.         return end_group_handle;
  58.     }
  59.  
  60.     public ArrayList<AnWBT_BLE_Characteristic> getCharacteristic() {
  61.         return characteristic;
  62.     }
  63.  
  64.     public void setService_type(int service_type) {
  65.         this.service_type = service_type;
  66.     }
  67.  
  68.     public void setMostSiguuid(long mostSiguuid) {
  69.         this.mostSiguuid = mostSiguuid;
  70.     }
  71.  
  72.     public void setLeastSiguuid(long leastSiguuid) {
  73.         this.leastSiguuid = leastSiguuid;
  74.     }
  75.  
  76.     public void setHandle(int handle) {
  77.         this.handle = handle;
  78.     }
  79.  
  80.     public void setEnd_group_handle(int end_group_handle) {
  81.         this.end_group_handle = end_group_handle;
  82.     }
  83.  
  84.     public void setCharacteristic(ArrayList<AnWBT_BLE_Characteristic> characteristic) {
  85.         this.characteristic = characteristic;
  86.     }
  87.  
  88.     @Override
  89.     public int describeContents() {
  90.         return 0;
  91.     }
  92.  
  93.     @Override
  94.     public void writeToParcel(Parcel dest, int flags) {
  95.         dest.writeInt(service_type);
  96.         dest.writeLong(mostSiguuid);
  97.         dest.writeLong(leastSiguuid);
  98.         dest.writeInt(handle);
  99.         dest.writeInt(end_group_handle);
  100.         dest.writeTypedList(characteristic);
  101.     }
  102.  
  103.     public static final Creator<AnWBT_BLE_Service> CREATOR = new Creator<AnWBT_BLE_Service>() {
  104.         @Override
  105.         public AnWBT_BLE_Service createFromParcel(Parcel in) {
  106.             return new AnWBT_BLE_Service(in);
  107.         }
  108.  
  109.         @Override
  110.         public AnWBT_BLE_Service[] newArray(int size) {
  111.             return new AnWBT_BLE_Service[size];
  112.         }
  113.     };
  114. }

四、JNI层修改前代码

  1. /*
  2. * Class : com_anwsdk_service
  3. * Method :GATT_GetService()
  4. * Signature : (J)Ljava/util/List;
  5. */
  6. JNIEXPORT jobject JNICALL Java_com_anwsdk_service_anwbtservice_GATT_GetService(JNIEnv *env, jobject,jlong gatt)
  7. {
  8. 	ANW_LOGI("+++ GATT_GetService---");
  9. 	int i = 0;
  10. 	GATT_HANDLE gattHandle = (GATT_HANDLE)gatt;
  11. 	jclass arraylist_cls = env->FindClass("java/util/ArrayList");
  12. 	jmethodID arraylist_init = env->GetMethodID(arraylist_cls,"<init>","()V");	
  13. 	jmethodID arraylist_add = env->GetMethodID(arraylist_cls, "add", "(Ljava/lang/Object;)Z");
  14. 	
  15. 	jobject service_arraylist = env->NewObject(arraylist_cls,arraylist_init,""); 
  16. 	if(gattHandle == NULL){
  17. 		return service_arraylist;
  18. 	}
  19. 	AnW_BLE_Device device;
  20. 	GetBLEDeviceManagerByGATTHandle(&device,gattHandle);
  21. 	if(device.gatt_handle == NULL || device.download_status != BLE_DOWNLOAD_STATUS_COMPLETE){
  22. 		return service_arraylist;
  23. 	}
  24. 	jclass descriptor_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Descriptor");
  25. 	jmethodID descriptor_init = env->GetMethodID(descriptor_cls,"<init>","(IJJ[B)V"); 
  26.  
  27. 	
  28. 	jclass characteristic_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Characteristic");
  29. 	jmethodID characteristic_init = env->GetMethodID(characteristic_cls,"<init>","(IIIJJ[BLjava/util/ArrayList;)V");  
  30.  
  31. 	jclass service_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Service");
  32. 	jmethodID service_init = env->GetMethodID(service_cls,"<init>","(IJJIILjava/util/ArrayList;)V");
  33.  
  34. 	
  35. 	for(i = 0;i < device.service_count;i++){
  36. 		jobject characteristic_arraylist = env->NewObject(arraylist_cls,arraylist_init,""); 
  37. 		AnW_BLE_Service *service = &(device.ble_service[i]);
  38. 		int j = 0;
  39. 		for(j = 0;j < service->characteristic_count;j++){
  40. 			jobject descriptor_arraylist = env->NewObject(arraylist_cls,arraylist_init,"");
  41. 			AnW_BLE_Service_Info_Characteristic *characteristic = &(service->characteristic[j]);
  42. 			jbyteArray characteristic_value = charToByteArray(env, (const char*)characteristic->value,characteristic->value_len);			
  43. 			int k = 0;
  44. 			for(k = 0;k < characteristic->descriptor_count;k++){
  45. 				AnW_BLE_Service_Info_Characteristic_Descriptor *descriptor = &(characteristic->descriptor[k]);
  46. 				jbyteArray descriptor_value = charToByteArray(env, (const char*)descriptor->value,descriptor->value_len);
  47. 				jobject descriptor_obj = env->NewObject(descriptor_cls,descriptor_init,descriptor->handle,*(long *)(descriptor->uuid + 8),*(long *)(descriptor->uuid),descriptor_value); 
  48. 				env->CallBooleanMethod(descriptor_arraylist, arraylist_add, descriptor_obj);
  49. 			}
  50. 			jobject characteristic_obj = env->NewObject(characteristic_cls,characteristic_init,characteristic->handle,characteristic->properties,characteristic->value_handle,*(long *)(characteristic->uuid + 8),*(long *)(characteristic->uuid),characteristic_value,descriptor_arraylist); 
  51. 			env->CallBooleanMethod(characteristic_arraylist, arraylist_add, characteristic_obj);
  52. 		}
  53. 		jobject service_obj = env->NewObject(service_cls,service_init,service->service_type,*(long *)(service->uuid + 8),*(long *)(service->uuid),service->handle,service->end_group_handle,characteristic_arraylist); 
  54. 		env->CallBooleanMethod(service_arraylist, arraylist_add, service_obj);
  55. 	}
  56.  
  57. 	ANW_LOGI("--- GATT_GetService ---");
  58. 	return service_arraylist;
  59. }

JNI层修改后代码（这里面其实还修改了一个long类型）

  1. jlong uuid_lsb(u_int8* uuid) {
  2.   jlong lsb = 0;
  3.  
  4.   for (int i = 7; i >= 0; i--) {
  5.     lsb <<= 8;
  6.     lsb |= uuid[i];
  7.   }
  8.  
  9.   return lsb;
  10. }
  11.  
  12. jlong uuid_msb(u_int8* uuid) {
  13.   jlong msb = 0;
  14.  
  15.   for (int i = 15; i >= 8; i--) {
  16.     msb <<= 8;
  17.     msb |= uuid[i];
  18.   }
  19.  
  20.   return msb;
  21. }
  22. /*
  23. * Class : com_anwsdk_service
  24. * Method :GATT_GetService()
  25. * Signature : (J)Ljava/util/List;
  26. */
  27. JNIEXPORT jobject JNICALL Java_com_anwsdk_service_anwbtservice_GATT_GetService(JNIEnv *env, jobject,jlong gatt)
  28.  
  29. {
  30. 	ANW_LOGI("+++ GATT_GetService---(0x%llx)",gatt);
  31. 	int i = 0;
  32. 	GATT_HANDLE gattHandle = (GATT_HANDLE)gatt;
  33. 	jclass arraylist_cls = env->FindClass("java/util/ArrayList");
  34. 	jmethodID arraylist_init = env->GetMethodID(arraylist_cls,"<init>","()V");	
  35. 	jmethodID arraylist_add = env->GetMethodID(arraylist_cls, "add", "(Ljava/lang/Object;)Z");
  36. 	
  37. 	jobject service_arraylist = env->NewObject(arraylist_cls,arraylist_init,""); 
  38. 	if(gattHandle == NULL){
  39. 		return service_arraylist;
  40. 	}
  41. 	AnW_BLE_Device device;
  42. 	GetBLEDeviceManagerByGATTHandle(&device,gattHandle);
  43. 	if(device.gatt_handle == NULL || device.download_status != BLE_DOWNLOAD_STATUS_COMPLETE){
  44. 		return service_arraylist;
  45. 	}
  46. 	jclass descriptor_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Descriptor");
  47. 	jmethodID descriptor_init = env->GetMethodID(descriptor_cls,"<init>","()V"); 
  48. 	jmethodID descriptor_setHandle = env->GetMethodID(descriptor_cls,"setHandle","(I)V");
  49. 	jmethodID descriptor_setMostSiguuid = env->GetMethodID(descriptor_cls,"setMostSiguuid","(J)V");
  50. 	jmethodID descriptor_setLeastSiguuid = env->GetMethodID(descriptor_cls,"setLeastSiguuid","(J)V");
  51. 	jmethodID descriptor_setValue = env->GetMethodID(descriptor_cls,"setValue","([B)V");
  52.  
  53. 	
  54. 	jclass characteristic_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Characteristic");
  55. 	jmethodID characteristic_init = env->GetMethodID(characteristic_cls,"<init>","()V");
  56. 	jmethodID characteristic_setHandle = env->GetMethodID(characteristic_cls,"setHandle","(I)V");
  57. 	jmethodID characteristic_setProperties = env->GetMethodID(characteristic_cls,"setProperties","(I)V");
  58. 	jmethodID characteristic_setValue_handle = env->GetMethodID(characteristic_cls,"setValue_handle","(I)V");
  59. 	jmethodID characteristic_setMostSiguuid = env->GetMethodID(characteristic_cls,"setMostSiguuid","(J)V");
  60. 	jmethodID characteristic_setLeastSiguuid = env->GetMethodID(characteristic_cls,"setLeastSiguuid","(J)V");
  61. 	jmethodID characteristic_setValue = env->GetMethodID(characteristic_cls,"setValue","([B)V");
  62. 	jmethodID characteristic_setDescriptor = env->GetMethodID(characteristic_cls,"setDescriptor","(Ljava/util/ArrayList;)V");
  63.  
  64. 	jclass service_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Service");
  65. 	jmethodID service_init = env->GetMethodID(service_cls,"<init>","()V");
  66. 	jmethodID service_setService_type = env->GetMethodID(service_cls,"setService_type","(I)V");
  67. 	jmethodID service_setMostSiguuid = env->GetMethodID(service_cls,"setMostSiguuid","(J)V");
  68. 	jmethodID service_setLeastSiguuid = env->GetMethodID(service_cls,"setLeastSiguuid","(J)V");
  69. 	jmethodID service_setHandle = env->GetMethodID(service_cls,"setHandle","(I)V");
  70. 	jmethodID service_setEnd_group_handle = env->GetMethodID(service_cls,"setEnd_group_handle","(I)V");
  71. 	jmethodID service_setCharacteristic = env->GetMethodID(service_cls,"setCharacteristic","(Ljava/util/ArrayList;)V");
  72. 	for(i = 0;i < device.service_count;i++){
  73. 		jobject characteristic_arraylist = env->NewObject(arraylist_cls,arraylist_init,""); 
  74. 		AnW_BLE_Service *service = device.ble_service + i;
  75. 		int j = 0;
  76. 		for(j = 0;j < service->characteristic_count;j++){
  77. 			jobject descriptor_arraylist = env->NewObject(arraylist_cls,arraylist_init,"");
  78. 			AnW_BLE_Service_Info_Characteristic *characteristic = &(service->characteristic[j]);
  79. 			jbyteArray characteristic_value = charToByteArray(env, (const char*)characteristic->value,characteristic->value_len);			
  80. 			int k = 0;
  81. 			for(k = 0;k < characteristic->descriptor_count;k++){
  82. 				AnW_BLE_Service_Info_Characteristic_Descriptor *descriptor = &(characteristic->descriptor[k]);
  83. 				jbyteArray descriptor_value = charToByteArray(env, (const char*)descriptor->value,descriptor->value_len);
  84. 				jobject descriptor_obj = env->NewObject(descriptor_cls,descriptor_init,""); 
  85. 				env->CallVoidMethod(descriptor_obj,descriptor_setHandle,descriptor->handle);
  86. 				env->CallVoidMethod(descriptor_obj,descriptor_setMostSiguuid,uuid_msb(descriptor->uuid));
  87. 				env->CallVoidMethod(descriptor_obj,descriptor_setLeastSiguuid,uuid_lsb(descriptor->uuid));
  88. 				env->CallVoidMethod(descriptor_obj,descriptor_setValue,NULL);
  89. 				env->CallBooleanMethod(descriptor_arraylist, arraylist_add, descriptor_obj);
  90. 			}
  91. 			jobject characteristic_obj = env->NewObject(characteristic_cls,characteristic_init,""); 
  92. 			env->CallVoidMethod(characteristic_obj,characteristic_setHandle,characteristic->handle);
  93. 			env->CallVoidMethod(characteristic_obj,characteristic_setProperties,characteristic->properties);
  94. 			env->CallVoidMethod(characteristic_obj,characteristic_setValue_handle,characteristic->value_handle);
  95. 			env->CallVoidMethod(characteristic_obj,characteristic_setMostSiguuid,uuid_msb(characteristic->uuid));
  96. 			env->CallVoidMethod(characteristic_obj,characteristic_setLeastSiguuid,uuid_lsb(characteristic->uuid));
  97. 			env->CallVoidMethod(characteristic_obj,characteristic_setValue,NULL);
  98. 			env->CallVoidMethod(characteristic_obj,characteristic_setDescriptor,descriptor_arraylist);
  99. 			env->CallBooleanMethod(characteristic_arraylist, arraylist_add, characteristic_obj);
  100. 		}
  101. 		jobject service_obj = env->NewObject(service_cls,service_init,"");
  102. 		env->CallVoidMethod(service_obj,service_setService_type,service->service_type);
  103. 		env->CallVoidMethod(service_obj,service_setMostSiguuid,uuid_msb(service->uuid));
  104. 		env->CallVoidMethod(service_obj,service_setLeastSiguuid,uuid_lsb(service->uuid));
  105. 		env->CallVoidMethod(service_obj,service_setHandle,service->handle);
  106. 		env->CallVoidMethod(service_obj,service_setEnd_group_handle,service->end_group_handle);
  107. 		env->CallVoidMethod(service_obj,service_setCharacteristic,characteristic_arraylist);
  108. 		env->CallBooleanMethod(service_arraylist, arraylist_add, service_obj);
  109. 	}
  110.  
  111. 	ANW_LOGI("--- GATT_GetService ---");
  112. 	return service_arraylist;
  113. }

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