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Objective-C

Seamlessly transition from a UIViewController with a visible UINavigationBar to one without it

/* On the pushed UIViewController */
- (void)viewWillAppear:(BOOL)animated {
    
    [self.navigationController setNavigationBarHidden:YES
                                             animated:animated];
    
    [super viewWillAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated {
    
    [self.navigationController setNavigationBarHidden:NO
                                             animated:animated];
    
    [super viewWillDisappear:animated];
}
https://snipt.net/embed/e9b7666d85782d1d64bdafa579f47390/
/raw/e9b7666d85782d1d64bdafa579f47390/
e9b7666d85782d1d64bdafa579f47390
objective-c
Objective-C
17
2019-06-27T04:00:54
True
False
False
/api/public/snipt/40656/
seamlessly-transition-from-a-uiviewcontroller-with-a-visible-uinavigationbar-to-one-without-it
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="cm">/* On the pushed UIViewController */</span> </span><span id="L-2"><a name="L-2"></a><span class="p">-</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="nf">viewWillAppear:</span><span class="p">(</span><span class="kt">BOOL</span><span class="p">)</span><span class="nv">animated</span> <span class="p">{</span> </span><span id="L-3"><a name="L-3"></a> </span><span id="L-4"><a name="L-4"></a> <span class="p">[</span><span class="nb">self</span><span class="p">.</span><span class="n">navigationController</span> <span class="nl">setNavigationBarHidden</span><span class="p">:</span><span class="nb">YES</span> </span><span id="L-5"><a name="L-5"></a> <span class="nl">animated</span><span class="p">:</span><span class="n">animated</span><span class="p">];</span> </span><span id="L-6"><a name="L-6"></a> </span><span id="L-7"><a name="L-7"></a> <span class="p">[</span><span class="nb">super</span> <span class="nl">viewWillAppear</span><span class="p">:</span><span class="n">animated</span><span class="p">];</span> </span><span id="L-8"><a name="L-8"></a><span class="p">}</span> </span><span id="L-9"><a name="L-9"></a> </span><span id="L-10"><a name="L-10"></a><span class="p">-</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="nf">viewWillDisappear:</span><span class="p">(</span><span class="kt">BOOL</span><span class="p">)</span><span class="nv">animated</span> <span class="p">{</span> </span><span id="L-11"><a name="L-11"></a> </span><span id="L-12"><a name="L-12"></a> <span class="p">[</span><span class="nb">self</span><span class="p">.</span><span class="n">navigationController</span> <span class="nl">setNavigationBarHidden</span><span class="p">:</span><span class="nb">NO</span> </span><span id="L-13"><a name="L-13"></a> <span class="nl">animated</span><span class="p">:</span><span class="n">animated</span><span class="p">];</span> </span><span id="L-14"><a name="L-14"></a> </span><span id="L-15"><a name="L-15"></a> <span class="p">[</span><span class="nb">super</span> <span class="nl">viewWillDisappear</span><span class="p">:</span><span class="n">animated</span><span class="p">];</span> </span><span id="L-16"><a name="L-16"></a><span class="p">}</span> </span></pre></div> </td></tr></table>
ObjectiveC, UINavigationBar, ios