android O 32位系统报错：JNI DETECTED ERROR IN APPLICATION: use of deleted local reference
作者：互联网
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
package com.anwsdk.service;
import android.os.Parcel;
import android.os.Parcelable;
import java.util.ArrayList;
import java.util.List;
public class AnWBT_BLE_Service implements Parcelable {
private int service_type;
private long mostSiguuid;
private long leastSiguuid;
private int handle;
private int end_group_handle;
private ArrayList<AnWBT_BLE_Characteristic> characteristic;
public AnWBT_BLE_Service() {
}
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;
}
protected AnWBT_BLE_Service(Parcel in) {
service_type = in.readInt();
mostSiguuid = in.readLong();
leastSiguuid = in.readLong();
handle = in.readInt();
end_group_handle = in.readInt();
ArrayList<AnWBT_BLE_Characteristic> characteristic_new = new ArrayList<AnWBT_BLE_Characteristic>();
in.readTypedList(characteristic_new,AnWBT_BLE_Characteristic.CREATOR);
characteristic = characteristic_new;
}
public int getService_type() {
return service_type;
}
public long getMostSiguuid() {
return mostSiguuid;
}
public long getLeastSiguuid() {
return leastSiguuid;
}
public int getHandle() {
return handle;
}
public int getEnd_group_handle() {
return end_group_handle;
}
public ArrayList<AnWBT_BLE_Characteristic> getCharacteristic() {
return characteristic;
}
public void setService_type(int service_type) {
this.service_type = service_type;
}
public void setMostSiguuid(long mostSiguuid) {
this.mostSiguuid = mostSiguuid;
}
public void setLeastSiguuid(long leastSiguuid) {
this.leastSiguuid = leastSiguuid;
}
public void setHandle(int handle) {
this.handle = handle;
}
public void setEnd_group_handle(int end_group_handle) {
this.end_group_handle = end_group_handle;
}
public void setCharacteristic(ArrayList<AnWBT_BLE_Characteristic> characteristic) {
this.characteristic = characteristic;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(service_type);
dest.writeLong(mostSiguuid);
dest.writeLong(leastSiguuid);
dest.writeInt(handle);
dest.writeInt(end_group_handle);
dest.writeTypedList(characteristic);
}
public static final Creator<AnWBT_BLE_Service> CREATOR = new Creator<AnWBT_BLE_Service>() {
@Override
public AnWBT_BLE_Service createFromParcel(Parcel in) {
return new AnWBT_BLE_Service(in);
}
@Override
public AnWBT_BLE_Service[] newArray(int size) {
return new AnWBT_BLE_Service[size];
}
};
}
四、JNI层修改前代码
/*
* Class : com_anwsdk_service
* Method :GATT_GetService()
* Signature : (J)Ljava/util/List;
*/
JNIEXPORT jobject JNICALL Java_com_anwsdk_service_anwbtservice_GATT_GetService(JNIEnv *env, jobject,jlong gatt)
{
ANW_LOGI("+++ GATT_GetService---");
int i = 0;
GATT_HANDLE gattHandle = (GATT_HANDLE)gatt;
jclass arraylist_cls = env->FindClass("java/util/ArrayList");
jmethodID arraylist_init = env->GetMethodID(arraylist_cls,"<init>","()V");
jmethodID arraylist_add = env->GetMethodID(arraylist_cls, "add", "(Ljava/lang/Object;)Z");
jobject service_arraylist = env->NewObject(arraylist_cls,arraylist_init,"");
if(gattHandle == NULL){
return service_arraylist;
}
AnW_BLE_Device device;
GetBLEDeviceManagerByGATTHandle(&device,gattHandle);
if(device.gatt_handle == NULL || device.download_status != BLE_DOWNLOAD_STATUS_COMPLETE){
return service_arraylist;
}
jclass descriptor_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Descriptor");
jmethodID descriptor_init = env->GetMethodID(descriptor_cls,"<init>","(IJJ[B)V");
jclass characteristic_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Characteristic");
jmethodID characteristic_init = env->GetMethodID(characteristic_cls,"<init>","(IIIJJ[BLjava/util/ArrayList;)V");
jclass service_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Service");
jmethodID service_init = env->GetMethodID(service_cls,"<init>","(IJJIILjava/util/ArrayList;)V");
for(i = 0;i < device.service_count;i++){
jobject characteristic_arraylist = env->NewObject(arraylist_cls,arraylist_init,"");
AnW_BLE_Service *service = &(device.ble_service[i]);
int j = 0;
for(j = 0;j < service->characteristic_count;j++){
jobject descriptor_arraylist = env->NewObject(arraylist_cls,arraylist_init,"");
AnW_BLE_Service_Info_Characteristic *characteristic = &(service->characteristic[j]);
jbyteArray characteristic_value = charToByteArray(env, (const char*)characteristic->value,characteristic->value_len);
int k = 0;
for(k = 0;k < characteristic->descriptor_count;k++){
AnW_BLE_Service_Info_Characteristic_Descriptor *descriptor = &(characteristic->descriptor[k]);
jbyteArray descriptor_value = charToByteArray(env, (const char*)descriptor->value,descriptor->value_len);
jobject descriptor_obj = env->NewObject(descriptor_cls,descriptor_init,descriptor->handle,*(long *)(descriptor->uuid + 8),*(long *)(descriptor->uuid),descriptor_value);
env->CallBooleanMethod(descriptor_arraylist, arraylist_add, descriptor_obj);
}
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);
env->CallBooleanMethod(characteristic_arraylist, arraylist_add, characteristic_obj);
}
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);
env->CallBooleanMethod(service_arraylist, arraylist_add, service_obj);
}
ANW_LOGI("--- GATT_GetService ---");
return service_arraylist;
}JNI层修改后代码（这里面其实还修改了一个long类型）
jlong uuid_lsb(u_int8* uuid) {
jlong lsb = 0;
for (int i = 7; i >= 0; i--) {
lsb <<= 8;
lsb |= uuid[i];
}
return lsb;
}
jlong uuid_msb(u_int8* uuid) {
jlong msb = 0;
for (int i = 15; i >= 8; i--) {
msb <<= 8;
msb |= uuid[i];
}
return msb;
}
/*
* Class : com_anwsdk_service
* Method :GATT_GetService()
* Signature : (J)Ljava/util/List;
*/
JNIEXPORT jobject JNICALL Java_com_anwsdk_service_anwbtservice_GATT_GetService(JNIEnv *env, jobject,jlong gatt)
{
ANW_LOGI("+++ GATT_GetService---(0x%llx)",gatt);
int i = 0;
GATT_HANDLE gattHandle = (GATT_HANDLE)gatt;
jclass arraylist_cls = env->FindClass("java/util/ArrayList");
jmethodID arraylist_init = env->GetMethodID(arraylist_cls,"<init>","()V");
jmethodID arraylist_add = env->GetMethodID(arraylist_cls, "add", "(Ljava/lang/Object;)Z");
jobject service_arraylist = env->NewObject(arraylist_cls,arraylist_init,"");
if(gattHandle == NULL){
return service_arraylist;
}
AnW_BLE_Device device;
GetBLEDeviceManagerByGATTHandle(&device,gattHandle);
if(device.gatt_handle == NULL || device.download_status != BLE_DOWNLOAD_STATUS_COMPLETE){
return service_arraylist;
}
jclass descriptor_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Descriptor");
jmethodID descriptor_init = env->GetMethodID(descriptor_cls,"<init>","()V");
jmethodID descriptor_setHandle = env->GetMethodID(descriptor_cls,"setHandle","(I)V");
jmethodID descriptor_setMostSiguuid = env->GetMethodID(descriptor_cls,"setMostSiguuid","(J)V");
jmethodID descriptor_setLeastSiguuid = env->GetMethodID(descriptor_cls,"setLeastSiguuid","(J)V");
jmethodID descriptor_setValue = env->GetMethodID(descriptor_cls,"setValue","([B)V");
jclass characteristic_cls = env->FindClass("com/anwsdk/service/AnWBT_BLE_Characteristic");
jmethodID characteristic_init = env->GetMethodID(characteristic_cls,"<init>","()V");
jmethodID characteristic_setHandle = env->GetMethodID(characteristic_cls,"setHandle","(I)V");
jmethodID characteristic_setProperties = env->GetMethodID(characteristic_cls,"setProperties","(I)V");
jmethodID characteristic_setValue_handle = env->GetMethodID(characteristic_cls,"setValue_handle","(I)V");
jmethodID characteristic_setMostSiguuid = env->GetMethodID(characteristic_cls,"setMostSiguuid","(J)V");
jmethodID characteristic_setLeastSiguuid = env->GetMethodID(characteristic_cls,"setLeastSiguuid","(J)V");
jmethodID characteristic_setValue = env->GetMethodID(characteristic_cls,"setValue","([B)V");
jmethodID characteristic_setDescriptor = env->GetMethodID(characteristic_cls,"setDescriptor","(Ljava/util/ArrayList;)V");
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");
for(i = 0;i < device.service_count;i++){
jobject characteristic_arraylist = env->NewObject(arraylist_cls,arraylist_init,"");
AnW_BLE_Service *service = device.ble_service + i;
int j = 0;
for(j = 0;j < service->characteristic_count;j++){
jobject descriptor_arraylist = env->NewObject(arraylist_cls,arraylist_init,"");
AnW_BLE_Service_Info_Characteristic *characteristic = &(service->characteristic[j]);
jbyteArray characteristic_value = charToByteArray(env, (const char*)characteristic->value,characteristic->value_len);
int k = 0;
for(k = 0;k < characteristic->descriptor_count;k++){
AnW_BLE_Service_Info_Characteristic_Descriptor *descriptor = &(characteristic->descriptor[k]);
jbyteArray descriptor_value = charToByteArray(env, (const char*)descriptor->value,descriptor->value_len);
jobject descriptor_obj = env->NewObject(descriptor_cls,descriptor_init,"");
env->CallVoidMethod(descriptor_obj,descriptor_setHandle,descriptor->handle);
env->CallVoidMethod(descriptor_obj,descriptor_setMostSiguuid,uuid_msb(descriptor->uuid));
env->CallVoidMethod(descriptor_obj,descriptor_setLeastSiguuid,uuid_lsb(descriptor->uuid));
env->CallVoidMethod(descriptor_obj,descriptor_setValue,NULL);
env->CallBooleanMethod(descriptor_arraylist, arraylist_add, descriptor_obj);
}
jobject characteristic_obj = env->NewObject(characteristic_cls,characteristic_init,"");
env->CallVoidMethod(characteristic_obj,characteristic_setHandle,characteristic->handle);
env->CallVoidMethod(characteristic_obj,characteristic_setProperties,characteristic->properties);
env->CallVoidMethod(characteristic_obj,characteristic_setValue_handle,characteristic->value_handle);
env->CallVoidMethod(characteristic_obj,characteristic_setMostSiguuid,uuid_msb(characteristic->uuid));
env->CallVoidMethod(characteristic_obj,characteristic_setLeastSiguuid,uuid_lsb(characteristic->uuid));
env->CallVoidMethod(characteristic_obj,characteristic_setValue,NULL);
env->CallVoidMethod(characteristic_obj,characteristic_setDescriptor,descriptor_arraylist);
env->CallBooleanMethod(characteristic_arraylist, arraylist_add, characteristic_obj);
}
jobject service_obj = env->NewObject(service_cls,service_init,"");
env->CallVoidMethod(service_obj,service_setService_type,service->service_type);
env->CallVoidMethod(service_obj,service_setMostSiguuid,uuid_msb(service->uuid));
env->CallVoidMethod(service_obj,service_setLeastSiguuid,uuid_lsb(service->uuid));
env->CallVoidMethod(service_obj,service_setHandle,service->handle);
env->CallVoidMethod(service_obj,service_setEnd_group_handle,service->end_group_handle);
env->CallVoidMethod(service_obj,service_setCharacteristic,characteristic_arraylist);
env->CallBooleanMethod(service_arraylist, arraylist_add, service_obj);
}
ANW_LOGI("--- GATT_GetService ---");
return service_arraylist;
}
标签：use,reference,service,characteristic,arraylist,descriptor,报错,env,cls 来源： https://blog.csdn.net/sui1005316018/article/details/120127379