//
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// WKAvoidKeyboardViewController.m
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// AvoidKeyboardDemo
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//
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// Created by 吴珂 on 15/9/9.
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// Copyright (c) 2015年 MyCompany. All rights reserved.
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//
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#import "WKAvoidKeyboardViewController.h"
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#define GetOSVersion [[UIDevice currentDevice].systemVersion floatValue]
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#define GetTransformDistance(Distance) (GetOSVersion < 7.1 ? Distance / 2 : Distance)
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@interface WKAvoidKeyboardViewController ()<UITextFieldDelegate, UITextViewDelegate>
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@end
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@implementation WKAvoidKeyboardViewController
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- (void)searchTextViewWithView:(UIView *)view
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{
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for (UIView *subview in view.subviews)
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{
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if ([subview isKindOfClass:[UITextView class]]) {
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((UITextView *)subview).delegate = self;
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}
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if ([subview isKindOfClass:[UITextField class]]) {
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((UITextField *)subview).delegate = self;
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}
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[self searchTextViewWithView:subview];
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}
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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[self searchTextViewWithView:self.view];
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//注册通知
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showKeyboard:) name:UIKeyboardWillShowNotification object:nil];
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideKeyboard:) name:UIKeyboardWillHideNotification object:nil];
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}
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- (void)didReceiveMemoryWarning {
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[super didReceiveMemoryWarning];
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// Dispose of any resources that can be recreated.
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}
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#pragma mark - 键盘躲避
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- (void)showKeyboard:(NSNotification *)noti
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{
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self.view.transform = CGAffineTransformIdentity;
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UIView *editView = _editTextView ? _editTextView : _editTextField;
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CGRect tfRect = [editView.superview convertRect:editView.frame toView:self.view];
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NSValue *value = noti.userInfo[@"UIKeyboardFrameEndUserInfoKey"];
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NSLog(@"%@", value);
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CGRect keyBoardF = [value CGRectValue];
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CGFloat animationTime = [noti.userInfo[@"UIKeyboardAnimationDurationUserInfoKey"] floatValue];
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CGFloat _editMaxY = CGRectGetMaxY(tfRect);
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CGFloat _keyBoardMinY = CGRectGetMinY(keyBoardF);
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NSLog(@"%f %f", _editMaxY, _keyBoardMinY);
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//获取状态栏的rect
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CGRect statusRect = [[UIApplication sharedApplication] statusBarFrame];
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//获取导航栏的rect
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CGRect navRect = self.navigationController.navigationBar.frame;
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//那么导航栏+状态栏的高度
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CGFloat height = statusRect.size.height + navRect.size.height;
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if (navRect.size.height == 0) {
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height = 0;
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}
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_editMaxY += height;
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if (_keyBoardMinY < _editMaxY) {
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CGFloat moveDistance = _editMaxY - _keyBoardMinY;
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[UIView animateWithDuration:animationTime animations:^{
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self.view.transform = CGAffineTransformTranslate(self.view.transform, 0, -moveDistance);
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}];
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}
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}
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- (void)hideKeyboard:(NSNotification *)noti
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{
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// NSLog(@"%@", noti);
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self.view.transform = CGAffineTransformIdentity;
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}
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- (void)textFieldDidBeginEditing:(UITextField *)textField
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{
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_editTextField = textField;
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_editTextView = nil;
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}
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- (BOOL)textViewShouldBeginEditing:(UITextView *)textView
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{
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_editTextView = textView;
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_editTextField = nil;
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return YES;
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}
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- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
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{
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[self.view endEditing:YES];
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}
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- (void)dealloc
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{
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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}
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@end
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