我正在编写一个程序，将锻炼保存到沙箱中的 plist 中。它在按下按钮后保存并且名称在文本视图中。保存后，它将锻炼添加到 tableview 实现在模拟器中运行良好，但在实际 iPhone 上却不行。有什么建议么？（另外，这是我的第一篇文章，所以请多多包涵。谢谢）
- (NSString *)dataFilePath {
NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:kFileName];
}
- (IBAction)buttonPressed:(id)sender {
if ([saveNameTextView.text length] == 0) { //name is not added to the textview for saving
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Oops =(" message:@"You need to enter a name for the workout" delegate:self cancelButtonTitle:@"OK, I'll add a name" otherButtonTitles: nil];
[alert show];
}else { //name is added for saving in the textview
NSString *filePath = [self dataFilePath];
NSMutableDictionary *savedWorkout = [[NSMutableDictionary alloc]initWithContentsOfFile:filePath];
if ([savedWorkout objectForKey:saveNameTextView.text]) { //if the name already exists, alert the user
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Oops =(" message:@"Name is already taken, please choose another" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
[alert show];
}else{ //save the workout
[savedWorkout setObject:self.saveDetails forKey:saveNameTextView.text];
[savedWorkout writeToFile:[self dataFilePath] atomically:YES];
NSString* saveConfirm = [[NSString alloc] initWithFormat:@"%@ has been saved",saveNameTextView.text];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Save Complete" message:saveConfirm delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
[alert show];
}//end if
}//end if
}