I'm currently developing a native plugin for a Capcitor app. I have very little experience with native iOS development, Swift and Obj-C.
I use a framework (FunSDK) which is written in C++.
I call this in an Objective-C++ wrapper.
As described here: https://medium.com/@cecilia.humlelu/set-up-c-library-dependencies-in-swift-projects-5dc2ccd2ddaf
The wrapper is then available in Swift via the bridging header.
This works so far, I can call the functions from the framework and they are executed correctly.
However, the functions of the framework are executed asynchronously. When a result is obtained, the “OnFunSDKResult” method is always executed.
During this step I get an EXC_BAD_ACCESS error while debugging. Then I ticked “Zombie objects” under the diagnostics settings. This causes execution to stop with an EXC_BREAKPOINT.
As I understand it, after executing the iniXMSDK method, the FunSDKWrapper class is cleared from memory before executing the "OnFunSDKResult" method?
I have also already integrated a completionHandler, which is only called in the "OnFunSDKResult" method so that data is transferred to the Swift class. However, that doesn't help either.
I have no idea how to proceed.
I hope somebody can help me.
If you need any more information, I would be happy to provide it.
The FunSDKWrapper.mm
//
// FunSDKWrapper.m
// App
//
// Created by Sysprobs on 12/8/23.
//
#import "FunSDKWrapper.h"
#import "FunSDK/FunSDK.h"
#import <XMNetInterface/Reachability.h>
@implementation FunSDKWrapper
-(NSString *)iniXMSDK:(int)test completion:(void (^)(int result))completionHandler{
self.initCompletionHandler = completionHandler;
self.msgHandle = FUN_RegWnd((__bridge void *)self);
FUN_Init();
Fun_LogInit(self.msgHandle, "", 0, "", LOG_UI_MSG);
FUN_XMCloundPlatformInit("***", "***", "***", 1);
FUN_InitNetSDK();
FUN_SetFunStrAttr(EFUN_ATTR_SAVE_LOGIN_USER_INFO,SZSTR([self GetDocumentPathWith:@"UserInfo.db"]));
FUN_SetFunStrAttr(EFUN_ATTR_USER_PWD_DB, SZSTR([self GetDocumentPathWith:@"password.txt"]));
FUN_SetFunStrAttr(EFUN_ATTR_UPDATE_FILE_PATH,SZSTR([self GetDocumentPathWith:@""]));
FUN_SetFunStrAttr(EFUN_ATTR_TEMP_FILES_PATH,SZSTR([self GetDocumentPathWith:@""]));
FUN_SetFunIntAttr(EFUN_ATTR_AUTO_DL_UPGRADE, 0);
FUN_SetFunStrAttr(EFUN_ATTR_CONFIG_PATH,SZSTR([self GetDocumentPathWith:@"APPConfigs"]));
FUN_SetFunIntAttr(EFUN_ATTR_SUP_RPS_VIDEO_DEFAULT, 1);
FUN_SetFunIntAttr(EFUN_ATTR_SET_NET_TYPE, [self getNetworkType]);
FUN_SysInit("arsp.xmeye.net;arsp1.xmeye.net;arsp2.xmeye.net", 15010);
FUN_InitNetSDK();
FUN_SysGetDevList(self.msgHandle, SZSTR(@"xxxx") , SZSTR(@"xxxx"),0);
return @"test";
}
- (void)searchLanDevices {
FUN_DevSearchDevice(self.msgHandle, 4000, 0);
}
// NSDocument/fileName
- (NSString *)GetDocumentPathWith:(NSString *) fileName {
NSString* path = [self documentsPath];
if (fileName != nil) {
path = [path stringByAppendingString:@"/"];
path = [path stringByAppendingString:fileName];
}
return path;
}
//NSDocument
- (NSString *)documentsPath {
NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [pathArray lastObject];
return path;
}
-(int)getNetworkType {
Reachability*reach=[Reachability reachabilityWithHostName:@"www.apple.com"];
//判断当前的网络状态
switch([reach currentReachabilityStatus]){
case ReachableViaWiFi:
return 1;
case ReachableViaWWAN:
return 2;
default:
return 0;
break;
}
}
- (void)OnFunSDKResult:(NSNumber *) pParam {
NSInteger nAddr = [pParam integerValue];
MsgContent *msg = (MsgContent *)nAddr;
switch (msg->id) {
case EMSG_SYS_GET_DEV_INFO_BY_USER:{
self.initCompletionHandler(1);
if (msg->param1 < 0){
//fehler
NSLog(@"Fehler beim XMCloud login");
}else{
char devJson[750*500];
FUN_GetFunStrAttr(EFUN_ATTR_GET_USER_ACCOUNT_DATA_INFO, devJson, 750*500);
NSLog(@"Geraeteliste: = %s",devJson);
}
}
break;
}
}
@end
The Swift Class
import Foundation
import Capacitor
/**
* Please read the Capacitor iOS Plugin Development Guide
* here: https://capacitorjs.com/docs/plugins/ios
*/
@objc(xmsdkPlugin)
public class xmsdkPlugin: CAPPlugin {
private let implementation = xmsdk()
@objc func echo(_ call: CAPPluginCall) {
let value = call.getString("value") ?? ""
call.resolve([
"value": implementation.echo(value)
])
}
@objc func initXMSDK(_ call: CAPPluginCall) {
//let devId = call.getString("devId") ?? ""
let wrapper = FunSDKWrapper();
let resp = wrapper.iniXMSDK(1, completion: {(result) -> Void in
NSLog("Completion von iniXMSDK")
});
call.resolve([
"status": resp
])
}
}
Errorlog with EXC_BREAKPOINT: