+(DisplayErrorMsg *)sharedDisplayErrorMsg
{ static DisplayErrorMsg *instance = nil;
@synchronized(instance)
{ if (instance == nil) {
instance = [[DisplayErrorMsg alloc] init];
}
} return instance;
}
-(void)showAlertView:(NSString *)title Message:(NSString *)msg
{
NSArray *array = [NSArray arrayWithObjects:title,msg, nil];
[self performSelectorOnMainThread:@selector(doAlert:) withObject:array waitUntilDone:NO];
}
//在没有界面的类中,实现弹出UIAlertView
-(void)doAlert:(NSArray *)array
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[array objectAtIndex:0] message:[array objectAtIndex:1] delegate:nil cancelButtonTitle:@"关闭" otherButtonTitles:nil];
AppDelegate *delegate = [[UIApplication sharedApplication] delegate]; //获取界面的思路
[delegate.window addSubview:alert];
[alert show];
[alert release];
}
转载于:https://my.oschina.net/u/2559341/blog/596926