我想把所有的iPhone通讯录联系人复制到一个数组中,然后把这个数组写入一个文件。我已经编写了以下代码并将其连接到一个按钮,但是当我点击这个按钮时我的应用程序崩溃了。
请帮我解决这个问题。
我的方法:
-(NSString *)pathOfFile{
NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *documentsDirectory=[paths objectAtIndex:0];
return [documentsDirectory stringByAppendingFormat:@"contacts.plist"];
}
-(IBAction)createAddressBookCopy{
ABAddressBookRef addressBook = ABAddressBookCreate();
CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(addressBook);
CFIndex nPeople = ABAddressBookGetPersonCount(addressBook);
NSMutableArray *masterList = [[NSMutableArray alloc] init];
for (int i = 0; i < nPeople; i++) {
ABRecordRef ref = CFArrayGetValueAtIndex(allPeople, i);
CFStringRef fName = ABRecordCopyValue(ref, kABPersonFirstNameProperty);
CFStringRef lName = ABRecordCopyValue(ref, kABPersonLastNameProperty);
NSString *contactFirstLast = [NSString stringWithFormat: @"%@", (NSString *)fName];
CFRelease(fName);
CFRelease(lName);
[masterList addObject:contactFirstLast];
[contactFirstLast release];
}
//self.list = masterList;
[masterList writeToFile:[self pathOfFile] atomically:YES];
[masterList release];
}
**这里我只保存了名字;
最佳答案
查看您的代码:
NSString *contactFirstLast = [NSString stringWithFormat: @"%@", (NSString *)fName];
// ....
contactFirstLast release]; // this is wrong
当您创建 contactFirstLast
时,您并不拥有它,而是在释放它。这就是您的应用程序崩溃的原因。
关于iphone - 创建地址簿副本,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5708060/