我正在使用 React Native，今天我运行 pod install 并收到此错误：
[！] 无效Podfile文件：#Pod::Podfile:0x00007f89a2d98d38 的未定义方法“get_default_flags”。
这是我的 pod 文件：
require_relative '../node_modules/react-native/scripts/react_native_pods'
require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'
platform :ios, '11.0'
install! 'cocoapods', :deterministic_uuids => false
target 'MyPrj' do
config = use_native_modules!
# Flags change depending on the env values.
flags = get_default_flags()
use_react_native!(
:path => config[:reactNativePath],
# to enable hermes on iOS, change `false` to `true` and then install pods
:hermes_enabled => flags[:hermes_enabled],
:fabric_enabled => flags[:fabric_enabled],
# An absolute path to your application root.
:app_path => "#{Pod::Config.instance.installation_root}/.."
)
pod …我的记录工作正常，但问题是在 WebRTC 调用之后，我崩溃了
所需条件为 false：format.sampleRate == hwFormat.sampleRate
这是我开始崩溃和 installTap 的方式：
func startRecord() {
self.filePath = nil
print("last format: \(audioEngine.inputNode.inputFormat(forBus: 0).sampleRate)")
let session = AVAudioSession.sharedInstance()
do {
try session.setCategory(.playAndRecord, options: .mixWithOthers)
} catch {
print("======== Error setting setCategory \(error.localizedDescription)")
}
do {
try session.setPreferredSampleRate(44100.0)
} catch {
print("======== Error setting rate \(error.localizedDescription)")
}
do {
try session.setPreferredIOBufferDuration(0.005)
} catch {
print("======== Error IOBufferDuration \(error.localizedDescription)")
}
do {
try session.setActive(true, options: .notifyOthersOnDeactivation)
} catch {
print("========== Error starting session \(error.localizedDescription)")
}
let …我可以将String转换为Array作为UTF-8,但是我不能像第一个String那样将它转换回String.
public static void main(String[] args) {
Scanner h = new Scanner(System.in);
System.out.println("INPUT : ");
String stringToConvert = h.nextLine();
byte[] theByteArray = stringToConvert.getBytes();
System.out.println(theByteArray);
theByteArray.toString();
String s = new String(theByteArray);
System.out.println(""+s);
}
如何打印theByteArray为字符串？
我已成功检查数据库中是否有值.
这是代码:
if (!reader.Read())
{
MessageBox.Show(" Can not find user!");
reader.Close();
}
else
{
int count = 0;
while (reader.Read())
{
string user = (string)reader.GetString(0);
string name = (string)reader.GetString(1);
int roll = (int)reader.GetInt32(2);
string phone = (string)reader.GetString(3);
string address = (string)reader.GetString(4);
string birthofdate = (string)reader.GetString(5);
label1.Text = "" + roll;
label2.Text = name;
label3.Text = birthofdate;
label4.Text = "" + phone;
label5.Text = address;
}
}
但问题是无论如何都会跳过while循环.
可能是我的问题出了问题,我试着知道我的代码怎么能这样运行...我的麻烦是什么,请帮我这里是我的代码:
string arr[3][4];
arr[1][0] = "34234";
printf("%s",arr[1][0]);
但我的输出是%#$(类似这样).请帮帮我,非常感谢你.