Input radio in Alert

Hi guy, I have code:

let alert = this.alerCtrl.create({
      cssClass:'alert_profile',
      subTitle: a.title,
      inputs: [
        { name: 'fullname', value:this.profile.fullname, placeholder:a.fullname,},
        { name: 'birth', value:this.profile.birth, placeholder:a.birth},
        { name: 'email', value:this.profile.email, placeholder:a.email },
        { name: 'mobile', value:this.profile.mobile, placeholder:a.mobile },
        { name: 'sex', value:this.profile.sex, placeholder:a.sex},
        { name: 'address', value:this.profile.address, placeholder:a.address },
        { name: 'districts', value:this.profile.districts, placeholder:a.districts},
        { name: 'provinceid', value:this.profile.provinceid, placeholder:a.provinceid },
        { name: 'bankname', value:this.profile.bankname, placeholder:a.bankname},
        { name: 'bankbranch', value:this.profile.bankbranch, placeholder:a.bankbranch },
        { name: 'bankacountname', value:this.profile.bankacountname, placeholder:a.bankacountname },
        { name: 'bankacountnum', value:this.profile.bankacountnum, placeholder:a.bankacountnum },
      ],
      buttons: [
        {text: a.cancel, role: 'cancel'},
        {text: a.save, handler: profile =>{
          let dataProfile ={
            fullname : profile.fullname,
            birth : profile.birth,
            email : profile.email,
            mobile : profile.mobile,
            sex : profile.sex,
            address : profile.address,
            districts : profile.districts,
            provinceid :profile.provinceid,
            bankname : profile.bankname,
            bankbranch : profile.bankbranch,
            bankacountname : profile.bankacountname,
            bankacountnum : profile.bankacountnum,
          }
          this.loadingprovider.showupdate(this); 
          this.profileService.upload(dataProfile)
          .subscribe(data =>{
            console.log(data);
            this.loading.dismiss();
            this.navCtrl.setRoot(ProfilePage);
          },(err)=>{
            this.loading.dismiss();
          })
        }}
      ]
    });
    alert.present();
  }

I want change districts input into radio type. when click input, show popup to select…
What should I do…???