Ios App適用於Ipad和Iphone不同的導航欄項目

Question

我正在開發適用於iPad和iPhone的應用程序，我已經在導航欄中添加了多個條形項目，但我想添加不同的條形項目...在iPad的導航欄中我只想添加2個項目到權利，已經在運作。 但我還想在iPhone導航欄的左側添加2個其他按鈕。 但是通過我正在嘗試的方式，我得到了相同的導航欄，相同的項目，以及如何向導航欄添加不同項目的任何想法。

這是我的代碼：

UIBarButtonItem *refreshButton = [[UIBarButtonItem alloc] 
  initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh 
  target:self action: @selector(IpadReload:)];

UIImage *emailIcon = [UIImage imageNamed:@"emailicon.png"];
UIBarButtonItem *emailButton = [[UIBarButtonItem alloc] initWithImage:(emailIcon) style:UIBarButtonItemStylePlain target:self action:@selector(emailButtonTapped:)];

NSArray *rightButtonsArray = [[NSArray alloc] initWithObjects:refreshButton, emailButton, nil];

self.navigationItem.rightBarButtonItems = rightButtonsArray;

UIBarButtonItem *previousButton = [[UIBarButtonItem alloc] initWithTitle:@"Previous" style:UIBarButtonItemStylePlain  target: self action: @selector(PreviousClicked:)];

UIImage *phoneIcon = [UIImage imageNamed:@"phoneicon.png"];
UIBarButtonItem *phoneButton = [[UIBarButtonItem alloc] initWithImage:(phoneIcon) style:UIBarButtonItemStylePlain target:self action:@selector(callPhone:)];

NSArray *leftButtonsArray = [[NSArray alloc] initWithObjects:previousButton, phoneButton, nil];

self.navigationItem.leftBarButtonItems = leftButtonsArray;

Answer 1

實際上，你需要使用當前設備的iOS內置枚舉而不是isEqualToString：

if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
    // iPad
} else {
    //  iPhone or iPod Touch - Add your two items to the right here
}

Answer 2

區分iPhone和iPad的簡潔方法是：

BOOL iPad = [[UIDevice currentDevice] userInterfaceIdiom] == 
    UIUserInterfaceIdiomPad;
// your setup
UIImage *buttonIcon = [UIImage imageNamed: 
   iPad ? @"padIcon.png" : @"phoneIcon.png"];

Answer 3

首先要區分iPhone和iPad，並根據它添加導航欄項目NSString * deviceType = [UIDevice currentDevice] .model;

if([deviceType isEqualToString:@"iPhone"]){
//Add iPhone navigation items
}else if ([deviceType isEqualToString:@"iPhone"]){
//Add iPad navigation items
}else{

// ipod等的默認項目}