iOS-監聽鍵盤輸入,視圖整體上移或恢複-避免輸入遮擋

iOS-監聽鍵盤輸入,視圖整體上移或恢複-避免輸入遮擋

1.初始化輸入框,監聽輸入框開始編輯和結束編輯

//密碼輸入框    UITextField *loginInputPasswordStr = [UITextField inputTextWithImage:[UIImage imageNamed:@"Password"] placeholderText:NSLocalizedString(@"Password", nil)];    loginInputPasswordStr.frame = RectMakeWithPercent(24/375.0, 385/667.0, 327/375.0, 48/667.0);    //設定鍵盤類型    loginInputPasswordStr.keyboardType = UIKeyboardTypeDefault;    //設定暗文    [loginInputPasswordStr setSecureTextEntry:YES];    //監聽密碼輸入框文字開始輸入    [loginInputPasswordStr addTarget:self action:@selector(loginInputPasswordStrInputBegin) forControlEvents:UIControlEventEditingDidBegin];    //監聽密碼輸入框文字結束輸入    [loginInputPasswordStr addTarget:self action:@selector(loginInputPasswordStrInputEnd) forControlEvents:UIControlEventEditingDidEnd]; [self.view addSubview:loginInputPasswordStr];

2.開始編輯時視圖上移,結束編輯或點擊螢幕時恢複初始位置.

//loginInputPasswordStr監聽方法-(void)loginInputPasswordStrInputBegin{    [self moveView];}-(void)loginInputPasswordStrInputEnd{    [self resumeView];}// 點擊螢幕取消輸入,恢複視圖初始位置-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    [self.view endEditing:YES];    [self resumeView];}

3.主體方法!

#pragma mark - 點擊輸入框視圖整體上移/恢複//恢複原始視圖位置-(void)resumeView{    NSLog(@"恢複原始視圖位置之前self.view.origin.y :%f",self.view.origin.y);    //當視圖上移130像素時->    if (self.view.frame.origin.y == -130) {        NSTimeInterval animationDuration=0.40f;        [UIView beginAnimations:@"ResizeForKeyboard" context:nil];        [UIView setAnimationDuration:animationDuration];        //如果當前View是父視圖，則Y為20個像素高度，如果當前View為其他View的子視圖，則動態調節Y的高度        float fX = self.view.frame.origin.x;        float fY = self.view.frame.origin.y + 130;        float width = self.view.frame.size.width;        float height = self.view.frame.size.height;        //下移130個單位，按實際情況設定        self.view.frame = CGRectMake(fX, fY, width, height);        [UIView commitAnimations];    }}// 移動視窗-(void) moveView{    NSLog(@"移動視窗之前self.view.origin.y :%f",self.view.origin.y);    //只有當視圖在初始位置的時候->    if (self.view.origin.y == 0) {        NSTimeInterval animationDuration=0.40f;        [UIView beginAnimations:@"ResizeForKeyboard" context:nil];        [UIView setAnimationDuration:animationDuration];        float fX = self.view.frame.origin.x;        float fY = self.view.frame.origin.y - 130;        float width = self.view.frame.size.width;        float height = self.view.frame.size.height;        //上移130個單位        self.view.frame = CGRectMake(fX, fY, width, height);        [UIView commitAnimations];    }}