【代碼筆記】iOS-在導覽列中顯示等待對話方塊,ios-導覽列

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【代碼筆記】iOS-在導覽列中顯示等待對話方塊,ios-導覽列

一,。

二,代碼。

ViewController.m

#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        //在導覽列中顯示等待對話方塊    [self showActivityIndicatorViewInNavigationItem];    }//點擊任何處,停止等待指標-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{        //停止等待指標,恢複導覽列    self.navigationItem.titleView = nil;    self.navigationItem.prompt = nil;}#pragma -mark -functions//在導覽列中顯示等待對話方塊-(void) showActivityIndicatorViewInNavigationItem{    UIActivityIndicatorView *aiview = [[UIActivityIndicatorView alloc]                                       initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];    self.navigationItem.titleView = aiview;    [aiview startAnimating];    self.navigationItem.prompt = @"資料載入中...";}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end

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