转 UIAlertView 不显示、屏幕变灰

UIAlertView 不显示、屏幕变灰
SvenFang
1 票181
在[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(response:) name:url object:nil];的回调方法response里面弹出UIAlertView，当执行到该代码时，屏幕变灰，但是UIAlertView没有出现，背景按钮均不可点击，输出得到UIAlertView对象的centre x和y均为0 ，alpha为1，等高人指点，下面是response方法的代码和屏幕截图- (void)response:(NSNotification *)notification
{if (isStop == 0) {//数据超时后,不作处理return;}if (isStop == 1) {[_timer invalidate];isStop = 0;}//停止等待控件
    [spinner performSelectorOnMainThread:@selector(stopAnimating) withObject:nil waitUntilDone:NO];[spinner removeFromSuperview];CommentXMLParser *commentXML=[notification object];
//    if([commentXML.responseDict objectForKey:@"return_result"]!=nil){
//        
//        NSLog(@"请求4001的返回－－－%@",[commentXML.responseDict objectForKey:@"return_result"]);
//        
//        if([[commentXML.responseDict objectForKey:@"return_result"] isEqualToString:RETURN_NO])
//        {
//            //这里只指网络失败
//            cmd = commentXML.returnHeader.cmd;
//            [self performSelectorOnMainThread:@selector(showDisconeect) withObject:nil waitUntilDone:NO];
//        }
//    }if(commentXML.done){ //如果有数据返回if([commentXML.returnHeader.rspcode isEqualToString:RESPONSE_SUCCESS]){//正确返回//解析协议if( [commentXML.returnHeader.cmd isEqualToString:B2B00004001]){score = [commentXML.responseDict objectForKey:@"integral_all"];score_can_use = [commentXML.responseDict objectForKey:@"integral_able"];balance = [commentXML.responseDict objectForKey:@"balance"];[self performSelectorOnMainThread:@selector(viewUpdateBaseInfo) withObject:nil waitUntilDone:NO];}else if([commentXML.returnHeader.cmd isEqualToString:B2B00004017]){gift_card_balance = [commentXML.responseDict objectForKey:@"balance"];[self performSelectorOnMainThread:@selector(viewUpdateBaseInfo) withObject:nil waitUntilDone:NO];}else if([commentXML.returnHeader.cmd isEqualToString:B2B00004002]){[[NSNotificationCenter defaultCenter] postNotificationName:@"Settlement" object:commentXML.responseDict];[self performSelectorOnMainThread:@selector(closePayTool) withObject:nil waitUntilDone:NO];}else{NSAssert(true, @"非法协议，本处理函数只处理4001,4017, 4002协议", nil);}}else{//如果业务失败NSLog([commentXML.returnHeader.cmd stringByAppendingString:@"业务失败， 失败原因：%@"], [commentXML.headerDict objectForKey:@"rspdesc"]);//todo 提示业务失败, 类似android的toast效果UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:[commentXML.headerDict objectForKey:@"rspdesc"] delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil];[alert show];[alert release];
//            [OMGToast showWithText:[commentXML.headerDict objectForKey:@"rspdesc"] bottomOffset:10 duration:5];
        }}评论 (1) • 分享 • 链接 • 2012-09-11　
0
Alert的delegate设置了吗？ – 吴复 2012-09-11
1个答案 票 数  
davidzhang
0 票
1
在这里面我建议你这样做，将下面这段代码//todo 提示业务失败, 类似android的toast效果UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:[commentXML.headerDict objectForKey:@"rspdesc"] delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil];[alert show];改为[alert performSelectorOnMainThread:@selector(show) withObject:nil waitUntilDone:YES];如果还是不明白，可以参考这里http://www.gowhich.com/blog/206

转：http://www.dewen.org/q/5474

转载于:https://www.cnblogs.com/ygm900/p/3153899.html

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