Question

是否有一种聪明的方法让用户在ios / iphone UITextField中切换隐藏和查看密码，用户可以在其中输入密码，并可以选择隐藏或查看密码。提前谢谢。

Answer 1

只需设置

.secureTextEntry = YES

无法工作我认为由于一个错误（或一个功能），如果textField有焦点。

如果textField当前是firstResponder

，请使用类似的内容使其正常工作

-(void) toggleTextFieldSecureEntry: (UITextField*) textField {
    BOOL isFirstResponder = textField.isFirstResponder; //store whether textfield is firstResponder

    if (isFirstResponder) [textField resignFirstResponder]; //resign first responder if needed, so that setting the attribute to YES works
    textField.secureTextEntry = !textField.secureTextEntry; //change the secureText attribute to opposite
    if (isFirstResponder) [self.textField becomeFirstResponder]; //give the field focus again, if it was first responder initially
}

Answer 2

- (IBAction)ShowPass:(UIButton *)sender {
    if (self.password.secureTextEntry == YES) {
        [self.showPass setTitle:@"HIDE" forState:(UIControlStateNormal)];
        self.password.secureTextEntry = NO;   
    }else{
        [self.showPass setTitle:@"SHOW" forState:(UIControlStateNormal)];
        self.password.secureTextEntry = YES;
    }
}

Answer 3

马里奥的回答很好，帮了我很多。

但是如果您在文本字段中使用自定义字体，一旦从安全条目更改为纯文本，文本字段的文本将使用错误（非自定义）字体绘制，直到用户输入另一个字符

通过一点点破解，我能够通过模拟代码中的字符输入来解决这个问题。

此修改后的Mario代码适用于具有自定义字体的字段：

- (void)toggleTextFieldSecureEntry:(UITextField *)textField {
    BOOL isFirstResponder = textField.isFirstResponder;

    if (isFirstResponder) {
        [textField resignFirstResponder];
    }

    textField.secureTextEntry = !textField.secureTextEntry;

    if (isFirstResponder) {
        [textField becomeFirstResponder];
    }

    // When using custom font and changing from secure entry to plain text, the text is initially drawn with wrong font
    // until a next character is input by user. This hack fixes the font immediatelly (simulate add and delete character)
    if (!textField.isSecureTextEntry) {
        [textField insertText:@"x"];
        [textField deleteBackward];
    }
}

Answer 4

您可以使用secureTextEntry的{{1}}属性。当你想隐藏（为每个角色显示点）时，你可以使用UITextField 如果您想显示密码，请使用yourTextField.secureTextEntry=YES;

如何在ios中切换隐藏和查看密码？

4 个答案: