首先总体效果如下显示

Paste_Image.png

“手机号”、“验证码”居左10像素，背景为白色，文字为白色

首先设置默认文字居左10像素显示

UILabel *numLble        = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 60, phoneCodeField.frame.size.height)];
numLble.text            = @"手机号";
numLble.textColor       = [z_UI colorWithHexString:@"5b2f22"];
numLble.textAlignment   = 1;
numLble.font            = DEFAULT_FONT(14);
phoneField.leftView     = numLble;
phoneField.leftViewMode = UITextFieldViewModeAlways;

leftView显示的位置，居左，
leftViewMode
typedef NS_ENUM(NSInteger, UITextFieldViewMode) {
UITextFieldViewModeNever,
UITextFieldViewModeWhileEditing,
UITextFieldViewModeUnlessEditing,
UITextFieldViewModeAlways
};

其次：设置背景白色，字体白色

phoneCodeField.backgroundColor = [[UIColor whiteColor] colorWithAlphaComponent:0.4f];
phoneCodeField.textColor = [z_UI colorWithHexString:@"#ffffff"];

colorWithAlphaComponent 设置背景的透明度这样就可以显示白色文字