Ionic keyboard overlaps register form

i have register form. but at ios when keyboard is opened it overlaps form content. here is my register page content. how can i fix it help me pls

<ion-modal-view class="modal-register is-modal">
    <ion-content class="model-content">
        <div class="logo logo-regis">
            <button class=""><i class="icon ion-android-arrow-back"></i></button>
            <h2 class="text-center">Create Account</h2>
        </div>
        <div class="modal-login-box modal-regis-box list">
            <form name="registerForm" ng-submit="doRegister(registerForm)" novalidate="">
                <div class="form-action list">
                    <label class="item item-input login input-first">
                        <input class="login input-img input-forgot" type="text" name="first_name" ng-model="registerData.first_name" placeholder="{{$root.appLanguage.FIRST_NAME_TEXT}}" required>
                    </label>
                    <div class="invalid-required" ng-show="registerForm.first_name.$error.required && registerForm.$submitted">* {{$root.appLanguage.FIRST_NAME_TEXT}} {{$root.appLanguage.is_required_TEXT}}</div>
                    <label class="item item-input login">
                        <input class="login input-img" type="text" name="last_name" ng-model="registerData.last_name" placeholder="{{$root.appLanguage.LAST_NAME_TEXT}}" required>
                    </label>
                    <div class="invalid-required" ng-show="registerForm.last_name.$error.required && registerForm.$submitted">* {{$root.appLanguage.LAST_NAME_TEXT}} {{$root.appLanguage.is_required_TEXT}}</div>

                    <label class="item item-input login">
                        <input class="login input-img" type="email" name="user_email" ng-model="registerData.user_email" placeholder="{{$root.appLanguage.YOUR_EMAIL_TEXT}}" required>
                    </label>
                    <div class="invalid-required" ng-show="registerForm.user_email.$error.required && registerForm.$submitted">* {{$root.appLanguage.EMAIL_TEXT}} {{$root.appLanguage.is_required_TEXT}}</div>
                    <div class="invalid-required" ng-show="registerForm.user_email.$error.email && registerForm.$submitted">* {{$root.appLanguage.EMAIL_TEXT}} is not correct</div>

                    <label class="item item-input login">
                        <input class="login input-img" type="password" name="user_pass" ng-model="registerData.user_pass" placeholder="Password" required>
                    </label>
                    <div class="invalid-required" ng-show="registerForm.user_pass.$error.required && registerForm.$submitted">
                    * {{$root.appLanguage.PASSWORD_TEXT}} {{$root.appLanguage.is_required_TEXT}}
                    </div>

                    <label class="item item-input login">
                        <input class="login input-img" type="password" name="user_confirmpass" ng-model="registerData.user_confirmpass" placeholder="Password" required>
                    </label>
                    <div class="invalid-required" ng-show="registerForm.user_confirmpass.$error.required && registerForm.$submitted">*{{$root.appLanguage.CONFIRM_TEXT}} {{$root.appLanguage.is_required_TEXT}}</div>
                    <div class="buttons button-action item">
                        <button class="button button-block"><!-- {{$root.appLanguage.SIGNUP_TEXT}} -->Create Account
                        </button>
                    </div>
                    <div class="buttons sign-up" >
                    Already have an account?
                        <a class="button-close" ng-click="closeModalRegister()">
                            <span class="text-centent">{{$root.appLanguage.SIGNIN_TEXT}}</span>
                        </a>
                    </div>
                </div>
            </form>
        </div>
    </ion-content>
</ion-modal-view>

and here is my screenshot
https://i.hizliresim.com/qGgLDZ.png

i have had same issue i resolved it by using focus and blur event

  1. define a variable : _keyboardIsOpen = false

  2. Method for focus and blur :
    textFocus(){
    this._keyboardIsOpen = true;
    }
    textBlur(){
    this._keyboardIsOpen = false;
    }

  3. add in every text field.
    (focus)=“textFocus()” (blur)=“textBlur()”

  1. add a div at the bottom in html file

  1. apply style

.keyboard-height{
margin-bottom: 180px;
}