xcode 如何在ios中隐藏和查看密码之间切换？
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How to switch between hide and view password in ios?
提问by MR Mido
Is there a clever way to let the user switch between hide and view password in an ios/iphone UITextField where the user can enter a password and would have the option of either hide it or view it. thanks in advance.
是否有一种巧妙的方法可以让用户在 ios/iphone UITextField 中在隐藏和查看密码之间切换，用户可以在其中输入密码并可以选择隐藏或查看它。提前致谢。
回答by Mario
Simply setting
简单设置
.secureTextEntry = YES
wont work I think due to a bug (or a feature), if the textField has focus.
如果 textField 具有焦点，我认为由于错误（或功能）而无法工作。
Use something like this to make it work also if the textField is currently firstResponder
如果 textField 当前是 firstResponder，也可以使用类似的方法使其工作
-(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
}
回答by Sakshi Singla
- (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;
}
}
回答by Lukas Kukacka
Mario's answer works fine and helped me a lot.
马里奥的回答很好，对我帮助很大。
But if you use custom fontin a text field, once you change from secure entry to plain text, the text field's text will be drawn with wrong (not custom) font until user inputs another character.
但是如果您在文本字段中使用自定义字体，一旦您从安全输入更改为纯文本，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。
With a little hack I was able to fix this issue by simulating that character input from code.
通过一些小技巧，我能够通过模拟代码中的字符输入来解决这个问题。
This modified Mario's code should work for fields with custom fonts:
这个修改后的马里奥代码应该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];
}
}
回答by Atif Azad
You can use secureTextEntryproperty of UITextField. When you want to hide (show dot for each character) you can use yourTextField.secureTextEntry=YES;And when you want to show password use yourTextField.secureTextEntry=NO;
您可以使用 的secureTextEntry属性UITextField。当您想隐藏（为每个字符显示点）时，您可以使用yourTextField.secureTextEntry=YES;当您想显示密码时使用yourTextField.secureTextEntry=NO;
回答by Abhijeet
For Swift, only the assignment values change from YES/NO to true/false boolean values.
对于 Swift，只有赋值值从 YES/NO 更改为 true/false 布尔值。
password.secureTextEntry = true //Visible
password.secureTextEntry = false //InVisible
