iphone - ABGroupAddMember 在 iOS4 设备上不起作用
<p><p>下面的代码在模拟器(iOS 4 和 5)中运行良好，但在 iOS 4 设备上没有添加任何联系人。不返回错误。你知道为什么吗？</p>
<pre><code>ABAddressBookRef ab = ABAddressBookCreate();
abGroupRef = ABAddressBookGetGroupWithRecordID(ab, 1);
ABRecordRef pRef = ABAddressBookGetPersonWithRecordID(ab, 1);
ABGroupAddMember(abGroupRef, pRef, &anError);
ABAddressBookSave(ab, &anError);
</code></pre>
<p>谢谢，
--约瑟夫</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>Objective C 编程习惯总是检查返回 BOOL 值的函数的结果(例如 <code>ABGroupAddMember</code> 或 <code>ABAddressBookSave</code> 或 <code>NSArray</code> 或 <code>NSDictionary</code> <code>writeToFile</code> 方法)<strong><em>before</em></strong> 检查是否有错误作为参数之一返回.</p>
<p>试试这样的:</p>
<pre><code>ABAddressBookRef ab = ABAddressBookCreate();
ABRecordRef abGroupRef = ABAddressBookGetGroupWithRecordID(ab, 1);
ABRecordRef pRef = ABAddressBookGetPersonWithRecordID(ab, 1);
CFErrorRef anError = NULL;
NSError * anErrorAsObjectiveCObject; // for use with toll free bridged object magic
if(ABGroupAddMember(abGroupRef, pRef, &anError))
{
if(ABAddressBookSave(ab, &anError))
{
NSLog(@"successfully saved");
} else {
anErrorAsObjectiveCObject = (__bridge_transfer NSError *) anError;
NSLog( @"error in ABAddressBookSave - %@ %@", , );
}
} else {
anErrorAsObjectiveCObject = (__bridge_transfer NSError *) anError;
NSLog( @"error in ABGroupAddMember - %@ %@", , );
}
</code></pre></p>
<p style="font-size: 20px;">关于iphone - ABGroupAddMember 在 iOS4 设备上不起作用，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/8525360/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/8525360/
</a>
</p>
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