將csv文件中的數據加載到xcode時，NSString不能正確顯示

Question

我有一個csv文件，它存儲3個值 - 城市名稱以及州，經度和緯度值。

，當我用Excel打開會出現採樣數據：馬薩諸塞州波士頓，411.932，73

，我面對的第一個問題，當我CSV文件複製到Xcode項目文件夾時，Xcode將文件數據顯示爲「Albany，NY」，397.898,73，將「」添加到第一列數據。

，我面對的是，當我取回從CSV文件中的數據，並造成城市名作爲的NSString，該字符串只顯示奧爾巴尼代替奧爾巴尼，紐約

這是我做的第二個問題。感謝您的幫助。

NSString* filePath = [[NSBundle mainBundle] pathForResource:@"citiesdataUsed" ofType:@"csv"]; 
NSString* fileContents = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil]; 
[NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil]; 

NSArray* pointStrings = [fileContents componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]]; 
cityList = [[NSMutableArray alloc]init]; 

//skip line 0 as it is the title of each column 
for(int idx = 0; idx < pointStrings.count; idx++) 
{ 
    Pair *sth = [[Pair alloc] init]; 
    // break the string down even further to the columns. 
    NSString* currentPointString = [pointStrings objectAtIndex:idx]; 
    NSArray* arr = [currentPointString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@","]]; 

    NSString *country = [[NSString alloc] initWithFormat:@"%@", [arr objectAtIndex:0]]; 
    NSNumber *latData = [[NSNumber alloc] initWithFloat:[[arr objectAtIndex:2] floatValue]]; //long 
    NSNumber *longData = [[NSNumber alloc] initWithFloat:[[arr objectAtIndex:1] floatValue]]; //lat 

    //convert the NSNumbers to float value 
    float longData2 = [longData floatValue]; 
    float latData2 = [latData floatValue]; 
    CGPoint temp = CGPointMake(longData2,latData2); 
    sth.city = country; 
    sth.location = temp; 
    [cityList addObject: sth]; 
    [sth release]; 
} 

Answer 1

至於貴國解析只有第一個部分..

你被,分割線，因此您的陣列看起來像

arr[0] = Albany 
arr[1] = N.Y. 
arr[2] = 397.898 
arr[3] = 73 

您的代碼應顯示爲

NSString *country = [[NSString alloc] initWithFormat:@"%@, %@", [arr objectAtIndex:0], [arr objectAtIndex:1]]; 
NSNumber *latData = [[NSNumber alloc] initWithFloat:[[arr objectAtIndex:2] floatValue]]; //long 
NSNumber *longData = [[NSNumber alloc] initWithFloat:[[arr objectAtIndex:3] floatValue]]; //lat 

不太確定爲什麼xcode會在CSV中包含引號文件，但如果引號只顯示在xcode中，而不是（作爲例子）textedit，你的文件就可以了。