UIAlertView中子視圖定位

我有一個彈出當用戶改變標籤UIAlertView中子視圖定位

UIAlertView *tempAlert = [[UIAlertView alloc] initWithTitle:@"Save Video?" 
                message:@"Do you wish to save the video ?" 
                delegate:self 
              cancelButtonTitle:@"Cancel" 
              otherButtonTitles:@"Save",nil]; 
[tempAlert show]; 
[tempAlert setDelegate:self]; 
self.saveAlert = tempAlert; 
[tempAlert release];

的alertView現在我處理按鈕點擊事件，在這個事件中，我想展示一個progressView另一個警報作爲一個子視圖

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 
{ 
if ([alertView.title isEqualToString:@"Save Video?"]) 
{ 
    if (buttonIndex == [alertView cancelButtonIndex]) 
    { 
     UIActivityIndicatorView *indicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge]; //17.4.12 
     // Adjust the indicator so it is up a few pixels from the bottom of the alert 
     indicator.center = CGPointMake(self.saveAlert.bounds.size.width/2, self.saveAlert.bounds.size.height - 40); 
     [indicator startAnimating]; 
     [self.saveAlert addSubview:indicator]; 
     [indicator release]; 
     [(ImageCanvas1AppDelegate*)[[UIApplication sharedApplication] delegate] setMainAlert:self.saveAlert]; 


     [NSThread detachNewThreadSelector:@selector(performSaveOperationWithTabChangeToIndex:) toTarget:self withObject:[NSNumber numberWithInt:self.tab]]; 
    } 
    else 
    { 
     [self performSelectorOnMainThread:@selector(playMovie) 
           withObject:nil waitUntilDone:YES]; 
    } 
} 
else 
{ 
    if (buttonIndex == [alertView cancelButtonIndex]) 
    { 
     [self.videoGenerator cancelVideoGeneration]; 
    } 
} 
}

如果用戶觸摸保存按鈕i示出了具有一個progressView alertView作爲一個子視圖調用此方法在「的playMovie」方法

- (void)showAlert 
{ 
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Generating Video" 
               message:@"Please wait!" 
               delegate:self cancelButtonTitle:@"Cancel" 
             otherButtonTitles:nil, nil]; 

[alert performSelectorOnMainThread:@selector(show) 
         withObject:nil 
        waitUntilDone:YES]; 
[alert setDelegate:self]; 
self.videoAlert = alert; 
UIProgressView *progressView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleBar]; 
[progressView setFrame:CGRectMake(alert.bounds.size.width - progressView.bounds.size.width - 95, 
            alert.bounds.size.height - progressView.bounds.size.height - 80, 
            progressView.bounds.size.width, 
            progressView.bounds.size.height)]; 
[alert addSubview:progressView]; 
self.progressView = progressView; 
[progressView release]; 

[alert release]; 

[pool release]; 
}

的問題是：

如果我展示alertView常子視圖定位是精細

，但如果我在progressView的

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {

它的位置顯示alertView是不當

來源

2012-05-21 Aatish Molasi

爲什麼你想在uialertview中顯示進度？ UIalertviews是模態的。製作你自己的觀點並表明，相反，你可以完全控制，你可以添加一個暫停，繼續和停止按鈕，你可以顯示所有你想要的信息。

來源

2012-05-21 07:57:42

除非要鎖定應用程序，否則不必創建模態視圖。最簡單的做法是製作一個全屏視圖，例如70％透明，黑色背景。大小可以是任何你喜歡的。模態地做事的麻煩是整個應用程序停止 –

以下是您可以輕鬆完成的一個示例，它使您可以輕鬆添加後臺任務。簡單得多。 http://www.code4app.com/photo/4f67fccc6803faaa75000001_1.png –

UIAlertView中子視圖定位

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