我在教程中键入了以下代码,但我无法让它工作...... 它说“没有可见的@interface为'NSFilemanager'声明选择器..... 对于[fileHandle seekToEndOfFile]; [fileHandle writeData:[resultLine dataUsingEncoding:NSUTF8StringEncoding]]; [fileHandle closeFile];部分..
任何想法是什么问题,因为我经历了很多次.. 谢谢 垫
- (IBAction)SaveText:(id)sender {
NSString *resultLine =[NSString stringWithFormat:@"%@\n",
self.inputText];
NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask,YES)objectAtIndex:0];
// textMsg.text = docPath;
NSString *savedTextMsg =[docPath stringByAppendingPathComponent:@"textMessage.csv"];
if (![[NSFileManager defaultManager] fileExistsAtPath:docPath]) {
[[NSFileManager defaultManager]
createFileAtPath:savedTextMsg contents:nil attributes:nil];
}
NSFileManager *fileHandle = [NSFileHandle fileHandleForUpdatingAtPath:savedTextMsg];
[fileHandle seekToEndOfFile];
[fileHandle writeData:[resultLine dataUsingEncoding:NSUTF8StringEncoding ]];
[fileHandle closeFile];
self.textMsg.text =@"";
NSLog(@"info saved");
}
答案 0 :(得分:1)
如果你改变了会有所帮助:
NSFileManager *fileHandle = [NSFileHandle fileHandleForUpdatingAtPath:savedTextMsg];
为:
NSFileHandle *fileHandle = [NSFileHandle fileHandleForUpdatingAtPath:savedTextMsg];
注意变量的类型。