UIAlertView 不顯示、屏幕變灰 SvenFang 1 票181 在[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(response:) name:url object:nil];的回調方法response里面彈出UIAlertView，當執行到該代碼時，屏幕變灰，但是UIAlertView沒有出現，背景按鈕均不可點擊，輸出得到UIAlertView對象的centre x和y均為0 ，alpha為1，等高人指點，下面是response方法的代碼和屏幕截圖- (void)response:(NSNotification *)notification {if (isStop == 0) {//數據超時后,不作處理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(@"請求4001的返回－－－%@",[commentXML.responseDict objectForKey:@"return_result"]); // // if([[commentXML.responseDict objectForKey:@"return_result"] isEqualToString:RETURN_NO]) // { // //這里只指網絡失敗 // cmd = commentXML.returnHeader.cmd; // [self performSelectorOnMainThread:@selector(showDisconeect) withObject:nil waitUntilDone:NO]; // } // }if(commentXML.done){ //如果有數據返回if([commentXML.returnHeader.rspcode isEqualToString:RESPONSE_SUCCESS]){//正確返回//解析協議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, @"非法協議，本處理函數只處理4001,4017, 4002協議", nil);}}else{//如果業務失敗NSLog([commentXML.returnHeader.cmd stringByAppendingString:@"業務失敗， 失敗原因：%@"], [commentXML.headerDict objectForKey:@"rspdesc"]);//todo 提示業務失敗, 類似android的toast效果UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:[commentXML.headerDict objectForKey:@"rspdesc"] delegate:nil cancelButtonTitle:@"確定" otherButtonTitles: nil];[alert show];[alert release]; // [OMGToast showWithText:[commentXML.headerDict objectForKey:@"rspdesc"] bottomOffset:10 duration:5]; }}評論 (1) ? 分享 ? 鏈接 ? 2012-09-11　 0 Alert的delegate設置了嗎？ – 吳復 2012-09-11 1個答案 票 數 davidzhang 0 票 1 在這里面我建議你這樣做，將下面這段代碼//todo 提示業務失敗, 類似android的toast效果UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:[commentXML.headerDict objectForKey:@"rspdesc"] delegate:nil cancelButtonTitle:@"確定" otherButtonTitles: nil];[alert show];改為[alert performSelectorOnMainThread:@selector(show) withObject:nil waitUntilDone:YES];如果還是不明白，可以參考這里http://www.gowhich.com/blog/206

轉：http://www.dewen.org/q/5474

轉載于:https://www.cnblogs.com/ygm900/p/3153899.html

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