react-native/Libraries/Text/TextInput/RCTInputAccessoryViewContent.m
Janic Duplessis 2191eecf54 Fix InputAccessoryView safe area when not attached to a TextInput (#21179)
Summary:
When using an InputAccessoryView attached to a TextInput the safe area insets are not applied properly. This uses different autolayout constraints that works in all cases I tested, roughly based on the technique used here https://github.com/stockx/SafeAreaInputAccessoryViewWrapperView/blob/master/SafeAreaInputAccessoryViewWrapperView/Classes/SafeAreaInputAccessoryViewWrapperView.swift#L38.
Pull Request resolved: https://github.com/facebook/react-native/pull/21179

Differential Revision: D9928503

Pulled By: hramos

fbshipit-source-id: b1b623334558093042fd94ac85e1b52dd16aa1a0
2018-09-18 18:31:51 -07:00

83 lines
2.8 KiB
Objective-C

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTInputAccessoryViewContent.h"
#import <React/UIView+React.h>
@implementation RCTInputAccessoryViewContent
{
UIView *_safeAreaContainer;
NSLayoutConstraint *_heightConstraint;
}
- (instancetype)init
{
if (self = [super init]) {
_safeAreaContainer = [UIView new];
[self addSubview:_safeAreaContainer];
// Use autolayout to position the view properly and take into account
// safe area insets on iPhone X.
// TODO: Support rotation, anchor to left and right without breaking frame x coordinate (T27974328).
self.autoresizingMask = UIViewAutoresizingFlexibleHeight;
_safeAreaContainer.translatesAutoresizingMaskIntoConstraints = NO;
_heightConstraint = [_safeAreaContainer.heightAnchor constraintEqualToConstant:0];
_heightConstraint.active = YES;
if (@available(iOS 11.0, *)) {
[_safeAreaContainer.bottomAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.bottomAnchor].active = YES;
[_safeAreaContainer.topAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.topAnchor].active = YES;
[_safeAreaContainer.leadingAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.leadingAnchor].active = YES;
[_safeAreaContainer.trailingAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.trailingAnchor].active = YES;
} else {
[_safeAreaContainer.bottomAnchor constraintEqualToAnchor:self.bottomAnchor].active = YES;
[_safeAreaContainer.topAnchor constraintEqualToAnchor:self.topAnchor].active = YES;
[_safeAreaContainer.leadingAnchor constraintEqualToAnchor:self.leadingAnchor].active = YES;
[_safeAreaContainer.trailingAnchor constraintEqualToAnchor:self.trailingAnchor].active = YES;
}
}
return self;
}
- (CGSize)intrinsicContentSize
{
// This is needed so the view size is based on autolayout constraints.
return CGSizeZero;
}
- (void)reactSetFrame:(CGRect)frame
{
// We still need to set the frame here, otherwise it won't be
// measured until moved to the window during the keyboard opening
// animation. If this happens, the height will be animated from 0 to
// its actual size and we don't want that.
[self setFrame:frame];
[_safeAreaContainer setFrame:frame];
_heightConstraint.constant = frame.size.height;
[self layoutIfNeeded];
}
- (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)index
{
[super insertReactSubview:subview atIndex:index];
[_safeAreaContainer insertSubview:subview atIndex:index];
}
- (void)removeReactSubview:(UIView *)subview
{
[super removeReactSubview:subview];
[subview removeFromSuperview];
if ([[_safeAreaContainer subviews] count] == 0 && [self isFirstResponder]) {
[self resignFirstResponder];
}
}
@end