ios - Xcode应用程序键盘看起来很拉长

Question

我有一个iOS应用程序，该应用程序是使用Objective-C在Xcode中构建的，已发布并在应用商店中。

我注意到我的应用程序中的键盘似乎比手机上其他应用程序的默认键盘(例如内置的苹果邮件应用程序)高很多。



有人看过这种行为吗？

大小差异是否有任何原因，是否有任何方法可以更改我的代码或应用程序设置，以在我的应用程序中获得“适当的”默认键盘？

我在应用程序中的文本输入字段的代码如下...

    usernameField = [[UITextField alloc] initWithFrame:CGRectZero];
    usernameField.borderStyle = UITextBorderStyleLine;
    usernameField.backgroundColor = [UIColor whiteColor];
    usernameField.font = [UIFont fontWithName:@"HelveticaNeue-Light" size:16];
    usernameField.placeholder = @"username";
    usernameField.autocapitalizationType = UITextAutocapitalizationTypeNone;
    usernameField.autocorrectionType = UITextAutocorrectionTypeNo;
    usernameField.keyboardType = UIKeyboardTypeASCIICapable;
    usernameField.returnKeyType = UIReturnKeyDone;
    usernameField.spellCheckingType = UITextSpellCheckingTypeNo;
    usernameField.clearButtonMode = UITextFieldViewModeWhileEditing;
    usernameField.textAlignment = NSTextAlignmentCenter;
    usernameField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
    usernameField.delegate = self;
    [self.scrollview addSubview:usernameField];

    passwordField = [[UITextField alloc] initWithFrame:CGRectZero];
    passwordField.borderStyle = UITextBorderStyleLine;
    passwordField.backgroundColor = [UIColor whiteColor];
    passwordField.font = [UIFont fontWithName:@"HelveticaNeue-Light" size:16];
    passwordField.placeholder = @"password";
    passwordField.autocapitalizationType = UITextAutocapitalizationTypeNone;
    passwordField.autocorrectionType = UITextAutocorrectionTypeNo;
    passwordField.keyboardType = UIKeyboardTypeDefault;
    passwordField.returnKeyType = UIReturnKeyDone;
    passwordField.spellCheckingType = UITextSpellCheckingTypeNo;
    passwordField.clearButtonMode = UITextFieldViewModeNever;
    passwordField.textAlignment = NSTextAlignmentCenter;
    passwordField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
    passwordField.clearsOnBeginEditing = YES;
    passwordField.secureTextEntry = YES;
    passwordField.delegate = self;
    [self.scrollview addSubview:passwordField];

Answer 1

使用正确大小的启动图像可以解决此问题。该应用程序将根据启动图像进行缩放，并为您提供适当的分辨率。

启动图片应使用以下尺寸。

iPhone 4s-640 * 960

iPhone 5,5s-640 * 1136

iPhone 6,7-750 * 1334

iPhone 6 +，7 +-1242 * 2208

谢谢