xcode – 将数组保存到plist

发布时间：2020-12-14 17:22:19 所属栏目：百科来源：网络整理

导读：我正在尝试将一些项目存储到pList中.这是数组循环： for (id obj in items)NSLog(@"obj: %@",obj); 输出NSLog： 2013-03-27 13:00:40.072 mycode[47436:c07] obj: Red2013-03-27 13:00:40.073 mycode[47436:c07] obj: Blue2013-03-27 13:00:40.073 mycode[47

我正在尝试将一些项目存储到pList中.这是数组循环：

for (id obj in items)
NSLog(@"obj: %@",obj);

输出NSLog：

2013-03-27 13:00:40.072 mycode[47436:c07] obj: Red
2013-03-27 13:00:40.073 mycode[47436:c07] obj: Blue
2013-03-27 13:00:40.073 mycode[47436:c07] obj: Green

// arrayWithObjects有效.但我不知道如何(循环？)通过我的项目保存到plist文件…

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
        NSString *documentsDirectory = [paths objectAtIndex:0];
        NSString *path = [documentsDirectory stringByAppendingPathComponent:@"data.plist"];


    NSFileManager *filemgr;
    filemgr = [NSFileManager defaultManager];

    if ([filemgr fileExistsAtPath: path]) {
        NSLog(@"%@",path);

    NSMutableDictionary *plist = [[NSDictionary dictionaryWithContentsOfFile:path] mutableCopy];
    NSMutableArray *newArray = [[[NSMutableArray alloc] init] autorelease];
    newArray = [NSArray arrayWithObjects:@"Red",@"Green",@"Blue" nil]; // <--- WORKS!
    newArray = [NSArray arrayWithObjects:items,nil]; // <-- ? 
    [plist setObject:newArray forKey:@"Hi"];
    [plist writeToFile:path atomically:YES];
    [plist release];


    } else {
        NSLog(@"File not found");
    }

    [filemgr release];

解决方法

也许这段代码可以帮助你.

NSMutableArray *newArray = [[[NSMutableArray alloc] init] autorelease];
NSMutableArray *targetArray = [[[NSMutableArray alloc] init] autorelease];

newArray = [NSArray arrayWithObjects:@"Red",@"Blue" nil];
for(int i=0;i<newArray.count;i++)
{
 [targetArray addObject:[newArray objectAtIndex:i]];

}
[plist setObject:targetArray forKey:@"Hi"];
[plist writeToFile:path atomically:YES];

或另一种方法

NSMutableArray *targetArray = [[[NSMutableArray alloc] init] autorelease];

for (id obj in items)
{
 [targetArray addObject:items];
 }
[plist setObject:targetArray forKey:@"Hi"];
[plist writeToFile:path atomically:YES];

希望这可以帮助！！！

（编辑：李大同）

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