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我有一個iOS應用程序從表單獲取數據,然後通過電子郵件將其作爲csv發送。目前它將csv保存爲靜態文件名,但我希望它將其保存爲<date><other app defined variable>.csv
。如果它更容易爲日期重新定義一個新的變量,那就試試吧,但是卻無法做到這一點。NSString結合日期和名稱作爲csv的名稱
目前,它看起來像這樣:
NSString* fileName = @"file.csv";
我已經試過了,沒有運氣其他小的語法變化之中:
NSString* fileName = @"%@%@ .csv",FromEmail,dateString;
FromEmail在HomeView.m定義是這樣的:
NSString *FromEmail = [userDefault objectForKey:@"FromEmail"];
這是整個csv製作部分:
//CSV function
NSMutableString *csv = [NSMutableString stringWithString:@""];
//add your content to the csv
[csv appendFormat:@"From,Date,Client,Time,Notes,Hardware,AfterHours,NoCharge\n%@,%@,%@,%@,%@,%@,%@,%@",FromEmail,dateString,txtClient.text,txtTime.text,txtNotes.text,txtHardware.text,isAfterHours,isDiscount];
NSString* filePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
//NSString* fileName = @"file.csv";
NSString* fileName = @"%@%@ .csv",FromEmail,dateString;
NSString* fileAtPath = [filePath stringByAppendingPathComponent:fileName];
if (![[NSFileManager defaultManager] fileExistsAtPath:fileAtPath]) {
[[NSFileManager defaultManager] createFileAtPath:fileAtPath contents:nil attributes:nil];
}
BOOL res = [[csv dataUsingEncoding:NSUTF8StringEncoding] writeToFile:fileAtPath atomically:NO];
if (!res) {
[[[UIAlertView alloc] initWithTitle:@"Error Creating CSV" message:@"Check your permissions to make sure this app can create files so you may email the app data" delegate:nil cancelButtonTitle:@"Okay" otherButtonTitles: nil] show];
}else{
NSLog(@"Data saved! File path = %@", fileName);
[picker addAttachmentData:[NSData dataWithContentsOfFile:fileAtPath]
mimeType:@"text/csv"
fileName:@"file.csv"];
[self presentViewController:picker animated:YES completion:nil];
}
//END CSV Function
我懷疑它的東西很簡單,但它只是把我難倒了好半天
有什麼看起來像'fileName'的例子?我的猜測是有一個角色是不允許的。也許「@」? – Larme
所以'dateString'只是空氣稀薄? –
尋求調試幫助的問題(「爲什麼這個代碼不工作?」)必須包含所需的行爲,特定的問題或錯誤,以及在問題本身中重現問題所需的最短代碼。 –