我已經NSString使用NSDataiOS7中添加的Class new API 編碼了text（）。使用這個- (NSData *)dataUsingEncoding:(NSStringEncoding)encoding; 這是我的代碼NSString *base64EncodedString = [[myText dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:0];NSLog(@"%@", base64EncodedString);我正在尋找解碼
2 回答
回首憶惘然
TA貢獻1847條經驗 獲得超11個贊
迅捷3+
let plainString = "foo"
編碼方式
let plainData = plainString.data(using: .utf8)
let base64String = plainData?.base64EncodedString()
print(base64String!) // Zm9v
解碼
if let decodedData = Data(base64Encoded: base64String!),
let decodedString = String(data: decodedData, encoding: .utf8) {
print(decodedString) // foo
}
迅捷<3
let plainString = "foo"
編碼方式
let plainData = plainString.dataUsingEncoding(NSUTF8StringEncoding)
let base64String = plainData?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
print(base64String!) // Zm9v
解碼
let decodedData = NSData(base64EncodedString: base64String!, options: NSDataBase64DecodingOptions(rawValue: 0))
let decodedString = NSString(data: decodedData, encoding: NSUTF8StringEncoding)
print(decodedString) // foo
目標C
NSString *plainString = @"foo";
編碼方式
NSData *plainData = [plainString dataUsingEncoding:NSUTF8StringEncoding];
NSString *base64String = [plainData base64EncodedStringWithOptions:0];
NSLog(@"%@", base64String); // Zm9v
解碼
NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:base64String options:0];
NSString *decodedString = [[NSString alloc] initWithData:decodedData encoding:NSUTF8StringEncoding];
NSLog(@"%@", decodedString); // foo
BIG陽
TA貢獻1859條經驗 獲得超6個贊
如果您想編寫后備代碼，則從一開始就在iOS中存在從base64進行解碼的警告NSURL：
NSURL *URL = [NSURL URLWithString:
[NSString stringWithFormat:@"data:application/octet-stream;base64,%@",
base64String]];
return [NSData dataWithContentsOfURL:URL];
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