Ionic app crashes on iOS 12.2 because of '_alwaysRunsAtForegroundPriority'

Question

On iOS 12.2 my app is terminated just after startup, with this message in xcode:

Terminating app due to uncaught exception \'NSUnknownKeyException\', rea

Answer 1

Try this. Download plugin cordova-plugin-background-mode or cordova-plugin-better-background-mode in your local folder, attach it to project as a local plugin. Go to plugin file src\ios\APPBackgroundMode.m and replace following lines

+ (NSString*) wkProperty
{
    NSString* str = @"X2Fsd2F5c1J1bnNBdEZvcmVncm91bmRQcmlvcml0eQ==";
    NSData* data  = [[NSData alloc] initWithBase64EncodedString:str options:0];

    return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}

with

+ (NSString*) wkProperty
{
    NSString* str = @"YWx3YXlzUnVuc0F0Rm9yZWdyb3VuZFByaW9yaXR5";
    NSData* data  = [[NSData alloc] initWithBase64EncodedString:str options:0];

    return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}