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NSMutableDictionary写文件失败解决

NSMutableDictionary写文件失败解决

作者: 勤的空间 | 来源:发表于2020-07-21 16:57 被阅读0次

NSMutableDictionary写文件失败解决

下列代码保存文件失败:

    NSString *plistPath = [[NSBundle mainBundle]pathForResource:@"JsEtag" ofType:@"plist"];

    NSMutableDictionary *dataDic = [[NSMutableDictionary alloc]initWithContentsOfFile:plistPath];

    dataDic[fileName] = Etag;

BOOL flag =  [dataDic writeToFile:plistPathatomically:YES];

解决方法:

由于路径访问不对,应用使用NSSearchPathForDirectoriesInDomains获取路径,代码如下:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);

    NSString*documentsDirectory = [pathsobjectAtIndex:0];

    NSString  *plistPath = [documentsDirectorystringByAppendingPathComponent:@"JsEtag.plist"];

    NSMutableDictionary *dataDic = [[NSMutableDictionary alloc] initWithContentsOfFile: plistPath];

if(!dataDic) {

        dataDic = [[NSMutableDictionaryalloc]init];

    }

//保存Etag

    dataDic[fileName] = Etag;

BOOLflag = [dataDicwriteToFile:plistPathatomically:YES];

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