我想用iPhone之前的页面视图名称更改离子后退按钮文本。如果它从User detail导航到Users，我希望在用户详细信息页面视图中将后面的文本更改为imports: [
IonicModule.forRoot(MyApp, {
tabsPlacement: 'top',
backButtonText: 'Back',
iconMode: 'ios',
modalEnter: 'modal-slide-in',
modalLeave: 'modal-slide-out',
tabbarPlacement: 'bottom',
pageTransition: 'ios'
})
]
。
目前，这是我从浏览解决方案中获得的。
backButtonText这将更改默认值。如何以编程方式从堆栈中更改页面名称的public class ProcessStarter : IDisposable
{
#region Import Section
private static uint STANDARD_RIGHTS_REQUIRED = 0x000F0000;
private static uint STANDARD_RIGHTS_READ = 0x00020000;
private static uint TOKEN_ASSIGN_PRIMARY = 0x0001;
private static uint TOKEN_DUPLICATE = 0x0002;
private static uint TOKEN_IMPERSONATE = 0x0004;
private static uint TOKEN_QUERY = 0x0008;
private static uint TOKEN_QUERY_SOURCE = 0x0010;
private static uint TOKEN_ADJUST_PRIVILEGES = 0x0020;
private static uint TOKEN_ADJUST_GROUPS = 0x0040;
private static uint TOKEN_ADJUST_DEFAULT = 0x0080;
private static uint TOKEN_ADJUST_SESSIONID = 0x0100;
private static uint TOKEN_READ = (STANDARD_RIGHTS_READ | TOKEN_QUERY);
private static uint TOKEN_ALL_ACCESS = (STANDARD_RIGHTS_REQUIRED | TOKEN_ASSIGN_PRIMARY | TOKEN_DUPLICATE | TOKEN_IMPERSONATE | TOKEN_QUERY | TOKEN_QUERY_SOURCE | TOKEN_ADJUST_PRIVILEGES | TOKEN_ADJUST_GROUPS | TOKEN_ADJUST_DEFAULT | TOKEN_ADJUST_SESSIONID);
private const uint NORMAL_PRIORITY_CLASS = 0x0020;
private const uint CREATE_UNICODE_ENVIRONMENT = 0x00000400;
private const uint MAX_PATH = 260;
private const uint CREATE_NO_WINDOW = 0x08000000;
private const uint INFINITE = 0xFFFFFFFF;
[StructLayout(LayoutKind.Sequential)]
public struct SECURITY_ATTRIBUTES
{
public int nLength;
public IntPtr lpSecurityDescriptor;
public int bInheritHandle;
}
public enum SECURITY_IMPERSONATION_LEVEL
{
SecurityAnonymous,
SecurityIdentification,
SecurityImpersonation,
SecurityDelegation
}
public enum TOKEN_TYPE
{
TokenPrimary = 1,
TokenImpersonation
}
public enum WTS_CONNECTSTATE_CLASS
{
WTSActive,
WTSConnected,
WTSConnectQuery,
WTSShadow,
WTSDisconnected,
WTSIdle,
WTSListen,
WTSReset,
WTSDown,
WTSInit
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct STARTUPINFO
{
public Int32 cb;
public string lpReserved;
public string lpDesktop;
public string lpTitle;
public Int32 dwX;
public Int32 dwY;
public Int32 dwXSize;
public Int32 dwYSize;
public Int32 dwXCountChars;
public Int32 dwYCountChars;
public Int32 dwFillAttribute;
public Int32 dwFlags;
public Int16 wShowWindow;
public Int16 cbReserved2;
public IntPtr lpReserved2;
public IntPtr hStdInput;
public IntPtr hStdOutput;
public IntPtr hStdError;
}
[StructLayout(LayoutKind.Sequential)]
internal struct PROCESS_INFORMATION
{
public IntPtr hProcess;
public IntPtr hThread;
public int dwProcessId;
public int dwThreadId;
}
[StructLayout(LayoutKind.Sequential)]
private struct WTS_SESSION_INFO
{
public Int32 SessionID;
[MarshalAs(UnmanagedType.LPStr)]
public String pWinStationName;
public WTS_CONNECTSTATE_CLASS State;
}
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern uint WTSGetActiveConsoleSessionId();
[DllImport("wtsapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool WTSQueryUserToken(int sessionId, out IntPtr tokenHandle);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public extern static bool DuplicateTokenEx(IntPtr existingToken, uint desiredAccess, IntPtr tokenAttributes, SECURITY_IMPERSONATION_LEVEL impersonationLevel, TOKEN_TYPE tokenType, out IntPtr newToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool CreateProcessAsUser(IntPtr token, string applicationName, string commandLine, ref SECURITY_ATTRIBUTES processAttributes, ref SECURITY_ATTRIBUTES threadAttributes, bool inheritHandles, uint creationFlags, IntPtr environment, string currentDirectory, ref STARTUPINFO startupInfo, out PROCESS_INFORMATION processInformation);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool CloseHandle(IntPtr handle);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern int GetLastError();
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern int WaitForSingleObject(IntPtr token, uint timeInterval);
[DllImport("wtsapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern int WTSEnumerateSessions(System.IntPtr hServer, int Reserved, int Version, ref System.IntPtr ppSessionInfo, ref int pCount);
[DllImport("userenv.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool CreateEnvironmentBlock(out IntPtr lpEnvironment, IntPtr hToken, bool bInherit);
[DllImport("wtsapi32.dll", ExactSpelling = true, SetLastError = false)]
public static extern void WTSFreeMemory(IntPtr memory);
[DllImport("userenv.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool DestroyEnvironmentBlock(IntPtr lpEnvironment);
#endregion
/// <summary>
/// Initializes a new instance of the <see cref="ProcessStarter"/> class.
/// </summary>
public ProcessStarter()
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ProcessStarter"/> class.
/// </summary>
/// <param name="processName">Name of the process.</param>
/// <param name="fullExeName">Full name of the exe.</param>
public ProcessStarter(string processName, string fullExeName)
{
processName_ = processName;
processPath_ = fullExeName;
}
/// <summary>
/// Initializes a new instance of the <see cref="ProcessStarter"/> class.
/// </summary>
/// <param name="processName">Name of the process.</param>
/// <param name="fullExeName">Full name of the exe.</param>
/// <param name="arguments">The arguments.</param>
public ProcessStarter(string processName, string fullExeName, string arguments)
{
processName_ = processName;
processPath_ = fullExeName;
arguments_ = arguments;
}
/// <summary>
/// Gets the current user token.
/// </summary>
/// <returns></returns>
public static IntPtr GetCurrentUserToken()
{
IntPtr currentToken = IntPtr.Zero;
IntPtr primaryToken = IntPtr.Zero;
IntPtr WTS_CURRENT_SERVER_HANDLE = IntPtr.Zero;
int dwSessionId = 0;
IntPtr hUserToken = IntPtr.Zero;
IntPtr hTokenDup = IntPtr.Zero;
IntPtr pSessionInfo = IntPtr.Zero;
int dwCount = 0;
WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, ref pSessionInfo, ref dwCount);
Int32 dataSize = Marshal.SizeOf(typeof(WTS_SESSION_INFO));
Int32 current = (int)pSessionInfo;
for (int i = 0; i < dwCount; i++)
{
WTS_SESSION_INFO si = (WTS_SESSION_INFO)Marshal.PtrToStructure((System.IntPtr)current, typeof(WTS_SESSION_INFO));
if (WTS_CONNECTSTATE_CLASS.WTSActive == si.State)
{
dwSessionId = si.SessionID;
break;
}
current += dataSize;
}
WTSFreeMemory(pSessionInfo);
bool bRet = WTSQueryUserToken(dwSessionId, out currentToken);
if (bRet == false)
{
return IntPtr.Zero;
}
bRet = DuplicateTokenEx(currentToken, TOKEN_ASSIGN_PRIMARY | TOKEN_ALL_ACCESS, IntPtr.Zero, SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation, TOKEN_TYPE.TokenPrimary, out primaryToken);
if (bRet == false)
{
return IntPtr.Zero;
}
return primaryToken;
}
/// <summary>
/// Runs this instance.
/// </summary>
public void Run()
{
IntPtr primaryToken = GetCurrentUserToken();
if (primaryToken == IntPtr.Zero)
{
return;
}
STARTUPINFO StartupInfo = new STARTUPINFO();
processInfo_ = new PROCESS_INFORMATION();
StartupInfo.cb = Marshal.SizeOf(StartupInfo);
SECURITY_ATTRIBUTES Security1 = new SECURITY_ATTRIBUTES();
SECURITY_ATTRIBUTES Security2 = new SECURITY_ATTRIBUTES();
string command = "\"" + processPath_ + "\"";
if ((arguments_ != null) && (arguments_.Length != 0))
{
command += " " + arguments_;
}
IntPtr lpEnvironment = IntPtr.Zero;
bool resultEnv = CreateEnvironmentBlock(out lpEnvironment, primaryToken, false);
if (resultEnv != true)
{
int nError = GetLastError();
}
CreateProcessAsUser(primaryToken, null, command, ref Security1, ref Security2, false, CREATE_NO_WINDOW | NORMAL_PRIORITY_CLASS | CREATE_UNICODE_ENVIRONMENT, lpEnvironment, null, ref StartupInfo, out processInfo_);
DestroyEnvironmentBlock(lpEnvironment);
CloseHandle(primaryToken);
}
/// <summary>
/// Stops this instance.
/// </summary>
public void Stop()
{
Process[] processes = Process.GetProcesses();
foreach (Process current in processes)
{
if (current.ProcessName == processName_)
{
current.Kill();
}
}
}
/// <summary>
/// Waits for exit.
/// </summary>
/// <returns></returns>
public int WaitForExit()
{
WaitForSingleObject(processInfo_.hProcess, INFINITE);
int errorcode = GetLastError();
return errorcode;
}
#region IDisposable Members
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public void Dispose()
{
}
#endregion
private string processPath_ = string.Empty;
private string processName_ = string.Empty;
private string arguments_ = string.Empty;
private PROCESS_INFORMATION processInfo_;
/// <summary>
/// Gets or sets the process path.
/// </summary>
/// <value>The process path.</value>
public string ProcessPath
{
get
{
return processPath_;
}
set
{
processPath_ = value;
}
}
/// <summary>
/// Gets or sets the name of the process.
/// </summary>
/// <value>The name of the process.</value>
public string ProcessName
{
get
{
return processName_;
}
set
{
processName_ = value;
}
}
/// <summary>
/// Gets or sets the arguments.
/// </summary>
/// <value>The arguments.</value>
public string Arguments
{
get
{
return arguments_;
}
set
{
arguments_ = value;
}
}
}
值。
答案 0 :(得分：2)
要动态更改后退按钮文本，您可以使用ViewContoller.setBackButtonText()方法。
请参阅：https://ionicframework.com/docs/api/navigation/ViewController/
要获取上一页标题，您应该查找NavController.last()可以为您提供的内容。
将ViewController注入组件。
import { ViewController } from 'ionic-angular';
constructor(private viewController: ViewController) {}
然后，您需要在加载DOM后发生的组件生命周期事件中设置文本：
ionViewDidLoad() {
this.viewController.setBackButtonText('My Back Button Text');
}
请参阅Ionic“生命周期事件”文档，找出哪一个符合您的需求。 https://ionicframework.com/docs/api/navigation/NavController/
我将所有代码信用（并感谢）给以下答案的绅士：https://stackoverflow.com/a/42013787/1321664