键盘提升底部按钮

我需要在屏幕底部有一个按钮，但是一旦我点击文本字段，键盘就会显示并用它提起按钮 . 我尝试过使用一个按钮，另一个stacklayout，一个包含它的滚动视图......没有任何工作，我觉得我不能正确理解布局 .

这是灰色按钮 - > I want the gray button there

但它总是出现在键盘上，see?

这是我的理解，这应该是一个scrollview，所以它保持在它的底部位置，但如果我将一个ScrollView添加到gridLayout所以它滚动，它不起作用 .

这是代码 . 先感谢您 .

<ActionBar android:title="Entrega {{id}}/{{detalleRuta.delegacion}}/{{detalleRuta.tipoAlbaran}}">
    <ActionItem>
        <Label *ngIf="!entrega.foto" cssClass="mdi icon-cam" [text]="'mdi-add-a-photo' | fonticon" ios.position="right" (tap)="getFoto()"></Label>
        <Label *ngIf="entrega.foto" cssClass="mdi icon-cam" [text]="'mdi-photo' | fonticon" ios.position="right" (tap)="showFoto()"></Label>
    </ActionItem>   
    <ActionItem>
        <Label class="mdi icon-map" [text]="'mdi-event-busy' | fonticon" ios.position="right" (tap)="cancelarEntrega()"></Label>
    </ActionItem>
</ActionBar>
<GridLayout rows="auto,*, 50" loaded="pageLoaded">
    <ListView row="0" [items]="detalle">
        <template let-item="item">
            <StackLayout orientation="vertical" class="info-entrega">
                <Label *ngIf="item.fechaActual" [text]="'Fecha ' + item.fechaActual"></Label>
                <Label *ngIf="item.horaActual"  [text]="'Hora ' + item.horaActual"></Label>
            </StackLayout>
        </template>
    </ListView>
    <TabView row="1" selectedIndex="0" selectedColor="#00B4E6" *ngIf="!noEntregado">
        <StackLayout *tabItem="{title: 'Cliente'}">
        <ScrollView>
            <StackLayout class="formulario">
                <TextField [(ngModel)]="entrega.nombreCliente" hint="Nombre Cliente" keyboardType="text" autocorrect="false" autocapitalizationType="none"></TextField>
                <TextField [(ngModel)]="entrega.DNICliente" hint="DNI Cliente" keyboardType="text" autocorrect="false" autocapitalizationType="none"></TextField>
                <TextField [(ngModel)]="entrega.emailCliente" hint="Email Cliente" keyboardType="email" autocorrect="false" autocapitalizationType="none"></TextField>
                <Button style="width:100%" class="btn {{ entrega.firmaCliente ? 'conFirma' : 'sinFirma' }}" text="Firma Cliente" (tap)="firmaCliente(false)"></Button>
            </StackLayout>
        </ScrollView>
        </StackLayout>
        <StackLayout *tabItem="{title: 'Empleado'}">
        <ScrollView>
            <StackLayout class="form-config">
                <TextField class="input-config" [(ngModel)]="entrega.nombreEmpleado" hint="Nombre Empleado" keyboardType="text" autocorrect="false" autocapitalizationType="none"></TextField>
                <TextField class="input-config" [(ngModel)]="entrega.DNIEmpleado" hint="Dni Empleado" keyboardType="text" autocorrect="false" autocapitalizationType="none"></TextField>
                <Button style="width:100%" cssClass="btn {{ entrega.firmaEmpleado ? 'conFirma' : 'sinFirma' }}" text="Firma Empleado" (tap)="firmaEmpleado(false)"></Button>
            </StackLayout>
        </ScrollView>
        </StackLayout>
        <StackLayout *tabItem="{title: 'Importes'}">
        <ScrollView *ngIf="detalleRuta.importePdte != 0">
            <StackLayout class="form-config">
                <StackLayout>
                    <Label *ngIf="entrega.impMetalico" class="impMetalico" [text]="'Metálico ' + impMetalicoCurrency"></Label>
                    <TextField id="impMetalico" keyboardType="number" [(ngModel)]="entrega.impMetalico" hint="Importe en Metálico" (textChange)="cambioMetalico($event)"></TextField>
                </StackLayout>

                <StackLayout>
                    <Label *ngIf="entrega.impTarjeta" class="impTarjeta" [text]="'Tarjeta ' + impTarjetaCurrency"></Label>
                    <TextField id="impTarjeta" keyboardType="number" [(ngModel)]="entrega.impTarjeta" hint="Importe en Tarjeta" (textChange)="cambioTarjeta($event)"></TextField>
                </StackLayout>

                 <StackLayout>
                    <Label *ngIf="entrega.impVale" class="impVale" [text]="'Vale ' + impValeCurrency"></Label>
                    <TextField id="impVale" keyboardType="number" [(ngModel)]="entrega.impVale" hint="Importe en Vale" (textChange)="cambioVale($event)"></TextField>
                </StackLayout>

                <StackLayout>
                    <Label *ngIf="entrega.impOtros" class="impOtros" [text]="'Otros ' + impOtrosCurrency"></Label>
                    <TextField id="impOtros" keyboardType="number" [(ngModel)]="entrega.impOtros" hint="Importe en Otros" (textChange)="cambioOtros($event)"></TextField>
                </StackLayout>

                <StackLayout>
                    <Label *ngIf="entrega.total" class="total" [text]="'Total ' + totalCurrency"></Label>
                </StackLayout>

                <StackLayout class="sumTotal">
                    <Label *ngIf="sumTotal" class="total" [text]="'Total ' + sumTotal | myCurrency"></Label>
                </StackLayout>
            </StackLayout>
        </ScrollView>
        <StackLayout *ngIf="detalleRuta.importePdte == 0">
            <Label class="sinImporte" text="El importe Pendiente es de 0€"></Label>
        </StackLayout>
        </StackLayout>
    </TabView>
    <Button row="2" *ngIf="!noEntregado" class="btn" text="Confirmar Entrega" (tap)="submit()"></Button>

    <StackLayout row="1" *ngIf="noEntregado">
    <ScrollView class="scrollView">
        <StackLayout class="form-config">
            <Label *ngIf="desc" class="desc" text="{{desc}}"></Label>
            <Button style="width:100%" text="Motivo" (tap)="getMotivos()"></Button>
            <StackLayout class="input-field">
                <TextView hint="Observación." returnKeyType="send" [(ngModel)]="entrega.obsNoEntrega" editable="true" class="input input-border"></TextView>
            </StackLayout>
            <Button class="btn" text="Cancelar Entrega" (tap)="cancel()"></Button>
        </StackLayout>
    </ScrollView>
    </StackLayout>
</GridLayout>
<ActivityIndicator class="activity-indicator" width="100" [busy]="isLoading" height="100"></ActivityIndicator>