Question

我可以将plist文件保存在Simulator中，但我无法将Plist文件保存在设备中。任何建议。

我正在使用

NSString* dictPath = [[NSBundle mainBundle] pathForResource:@"Dictionary" ofType:@"plist"];
NSDictionary * dict = [[NSDictionary alloc] initWithContentsOfFile:dictPath];

阅读文件

和

[dict writeToFile:dictPath atomically: YES];

写入文件。

Answer 1

您无法写入主套装。您只能从主包中读取。如果要编写文件，则需要将其放入应用程序的文档目录中。

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

如果您需要主捆绑中的plist，您可以先将其复制到文档目录，然后进行修改。建议进行检查以确保仅复制一次。

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

NSFileManager *fileManager = [NSFileManager defaultManager];

if (![fileManager fileExistsAtPath: path]){
    NSLog(@"File don't exists at path %@", path);

    NSString *plistPathBundle = [[NSBundle mainBundle] pathForResource:plistName ofType:@"plist"];

    [fileManager copyItemAtPath:plistPathBundle toPath: path error:&error]; 
}else{
    NSLog(@"File exists at path:%@", path);
}

Answer 2

通常，您可以将它们存储在〜/ Documents或〜/ Library中，具体取决于文件。问题What is the documents directory (NSDocumentDirectory)?包括您需要了解的文档链接和示例代码。

Answer 3

您需要将plist保存在Documents目录

中

写

NSString *mainBundlePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *dictPath = [mainBundlePath stringByAppendingPathComponent:@"Dictionary"];
NSDictionary * dict = ...; //Construct your dictionary
[dict writeToFile:dictPath atomically: YES];

阅读

NSDictionary * dict = [[NSDictionary alloc] initWithContentsOfFile:dictPath];

无法保存plist ios

3 个答案: