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我想在我的Xamarin Forms Portable應用程序中截取硬件背部按鈕,首先,我有登錄頁面,您必須登錄,它將導航到我的主頁2 ..進入我的主頁2後,當我單擊硬件後退按鈕時。 ..它進入我的登錄頁面或我之前打開的頁面。我想阻止它。任何人都可以請我解決這個問題.. 這裏是我的登錄頁面如何攔截硬件Bar Back Button在Xamarin Forms中的Android中單擊?
public LoginPage()
{
InitializeComponent();
}
public async void LoginBtn_Clicked(object sender, EventArgs e)
{
if (UserName.Text == null || password1.Text == null)
{
DisplayAlert("Alert ! ", "Please Enter UserName Or/Password!", "OK");
}
else
{
string uname = UserName.Text;
string pswd = password1.Text;
LoginService objservice = new LoginService();
LoginTokenModel result = await objservice.GetLogin(uname, pswd);
LoginTokenModel logintokenmodel = new LoginTokenModel();
logintokenmodel.User_Id = result.User_Id;
var Login_Token = result.Login_Token;
int user_Id = result.User_Id;
if (uname == result.User_Nmae)
{
// HomePage2 HOMEPge = new HomePage2();
await Navigation.PushModalAsync(new HomePage2(user_Id));
}
else
{
DisplayAlert("Alert ! ", "Invalid Credentials!", "OK");
}
}
}