/* Copyright 2016-present the Material Components for iOS authors. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ #import #import "MaterialTextFields.h" #import "supplemental/TextFieldControllerStylesExampleSupplemental.h" @interface TextFieldControllerStylesExample () // Be sure to keep your controllers in memory somewhere like a property: @property(nonatomic, strong) MDCTextInputControllerOutlined *textFieldControllerOutlined; @property(nonatomic, strong) MDCTextInputControllerFilled *textFieldControllerFilled; @property(nonatomic, strong) MDCTextInputControllerUnderline *textFieldControllerUnderline; @property(nonatomic, strong) UIImage *leadingImage; @property(nonatomic, strong) UIImage *trailingImage; @end @implementation TextFieldControllerStylesExample - (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor colorWithWhite:0.97f alpha:1.0f]; self.title = @"Material Text Fields"; [self setupExampleViews]; [self setupImages]; [self setupTextFields]; [self registerKeyboardNotifications]; } - (void)setupImages { self.leadingImage = [UIImage imageNamed:@"ic_search" inBundle:[NSBundle bundleForClass:[TextFieldControllerStylesExample class]] compatibleWithTraitCollection:nil]; self.trailingImage = [UIImage imageNamed:@"ic_done" inBundle:[NSBundle bundleForClass:[TextFieldControllerStylesExample class]] compatibleWithTraitCollection:nil]; } - (void)setupTextFields { // Default with Character Count and Floating Placeholder Text Fields // First the text field is added to the view hierarchy MDCTextField *textFieldOutlined = [[MDCTextField alloc] init]; [self.scrollView addSubview:textFieldOutlined]; textFieldOutlined.translatesAutoresizingMaskIntoConstraints = NO; int characterCountMax = 25; textFieldOutlined.delegate = self; textFieldOutlined.clearButtonMode = UITextFieldViewModeAlways; textFieldOutlined.leadingView = [[UIImageView alloc] initWithImage:self.leadingImage]; textFieldOutlined.leadingViewMode = UITextFieldViewModeAlways; textFieldOutlined.trailingView = [[UIImageView alloc] initWithImage:self.trailingImage]; textFieldOutlined.trailingViewMode = UITextFieldViewModeAlways; // Second the controller is created to manage the text field self.textFieldControllerOutlined = [[MDCTextInputControllerOutlined alloc] initWithTextInput:textFieldOutlined]; self.textFieldControllerOutlined.placeholderText = @"MDCTextInputControllerOutlined"; self.textFieldControllerOutlined.characterCountMax = characterCountMax; [self.textFieldControllerOutlined mdc_setAdjustsFontForContentSizeCategory:YES]; MDCTextField *textFieldFilled = [[MDCTextField alloc] init]; [self.scrollView addSubview:textFieldFilled]; textFieldFilled.translatesAutoresizingMaskIntoConstraints = NO; textFieldFilled.delegate = self; textFieldFilled.clearButtonMode = UITextFieldViewModeUnlessEditing; textFieldFilled.leadingView = [[UIImageView alloc] initWithImage:self.leadingImage]; textFieldFilled.leadingViewMode = UITextFieldViewModeAlways; textFieldFilled.trailingView = [[UIImageView alloc] initWithImage:self.trailingImage]; textFieldFilled.trailingViewMode = UITextFieldViewModeAlways; self.textFieldControllerFilled = [[MDCTextInputControllerFilled alloc] initWithTextInput:textFieldFilled]; self.textFieldControllerFilled.placeholderText = @"MDCTextInputControllerFilled"; self.textFieldControllerFilled.characterCountMax = characterCountMax; [self.textFieldControllerFilled mdc_setAdjustsFontForContentSizeCategory:YES]; [NSLayoutConstraint activateConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[charMax]-[floating]" options:NSLayoutFormatAlignAllLeading | NSLayoutFormatAlignAllTrailing metrics:nil views:@{ @"charMax" : textFieldOutlined, @"floating" : textFieldFilled }]]; [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeadingMargin multiplier:1 constant:0] .active = YES; [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeTrailingMargin multiplier:1 constant:0] .active = YES; [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.scrollView attribute:NSLayoutAttributeTrailingMargin multiplier:1 constant:0] .active = YES; // Full Width Text Field MDCTextField *textFieldUnderline = [[MDCTextField alloc] init]; [self.scrollView addSubview:textFieldUnderline]; textFieldUnderline.translatesAutoresizingMaskIntoConstraints = NO; textFieldUnderline.delegate = self; textFieldUnderline.clearButtonMode = UITextFieldViewModeUnlessEditing; textFieldUnderline.leadingView = [[UIImageView alloc] initWithImage:self.leadingImage]; textFieldUnderline.leadingViewMode = UITextFieldViewModeAlways; textFieldUnderline.trailingView = [[UIImageView alloc] initWithImage:self.trailingImage]; textFieldUnderline.trailingViewMode = UITextFieldViewModeAlways; self.textFieldControllerUnderline = [[MDCTextInputControllerUnderline alloc] initWithTextInput:textFieldUnderline]; self.textFieldControllerUnderline.placeholderText = @"MDCTextInputControllerUnderline"; self.textFieldControllerUnderline.characterCountMax = characterCountMax; [self.textFieldControllerUnderline mdc_setAdjustsFontForContentSizeCategory:YES]; [NSLayoutConstraint constraintWithItem:textFieldUnderline attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:textFieldFilled attribute:NSLayoutAttributeBottom multiplier:1 constant:1] .active = YES; [NSLayoutConstraint constraintWithItem:textFieldUnderline attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeadingMargin multiplier:1 constant:0] .active = YES; [NSLayoutConstraint constraintWithItem:textFieldUnderline attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeTrailingMargin multiplier:1 constant:0] .active = YES; #if defined(__IPHONE_11_0) && (__IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_11_0) if (@available(iOS 11.0, *)) { [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.scrollView.contentLayoutGuide attribute:NSLayoutAttributeTop multiplier:1 constant:20] .active = YES; [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.scrollView.contentLayoutGuide attribute:NSLayoutAttributeBottom multiplier:1 constant:-20] .active = YES; } else { [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.scrollView attribute:NSLayoutAttributeTop multiplier:1 constant:20] .active = YES; [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.scrollView attribute:NSLayoutAttributeBottom multiplier:1 constant:-20] .active = YES; } #else [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.scrollView attribute:NSLayoutAttributeTop multiplier:1 constant:20] .active = YES; [NSLayoutConstraint constraintWithItem:textFieldOutlined attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationLessThanOrEqual toItem:self.scrollView attribute:NSLayoutAttributeTop multiplier:1 constant:-20] .active = YES; #endif } #pragma mark - UITextFieldDelegate // All the usual UITextFieldDelegate methods work with MDCTextField - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { return YES; } - (BOOL)textFieldShouldReturn:(UITextField *)textField { [textField resignFirstResponder]; return NO; } #pragma mark - Keyboard Handling - (void)registerKeyboardNotifications { NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter]; [defaultCenter addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil]; [defaultCenter addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardDidChangeFrameNotification object:nil]; [defaultCenter addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil]; } - (void)keyboardWillShow:(NSNotification *)notification { CGRect frame = [[notification.userInfo valueForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue]; self.scrollView.contentInset = UIEdgeInsetsMake(0, 0, CGRectGetHeight(frame), 0); } - (void)keyboardWillHide:(NSNotification *)notification { self.scrollView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0); } @end