微信小程序模拟支付界面

有些时候遇到一些类似于银行卡输入密码或者微信支付输入密码的类似需求刚刚开始的时候我第一反应就是放几个input 但是呢每次输入的时候都会重新调用软键盘用户体验极其不好下面先看下类似的原型

代码以小程序为例

html

<view catchtap='showInputLayer' class="btn_pay">立即支付</view>
<!-- 密码输入框 -->
<view wx:if='{
   
   {showPayPwdInput}}'>
    <view class='bg_layer'></view>
    <view class='input_main'>
        <view class='input_title'>
            <view class='input_back' catchtap='hidePayLayer'><text></text></view>
            <text>输入支付密码</text>
        </view>
        <view class='input_tip'><text>使用会员卡余额支付需要验证身份，验证通过后才可进行支付。</text></view>
        <view class='input_row' catchtap='getFocus'>
            <view class='pwd_item' wx:for='{
   
   {6}}' wx:key='item' wx:for-index='i'>
                <text wx:if='{
   
   {pwdVal.length>i}}'></text>
            </view>
        </view>
        <view class='forget_pwd' catchtap='hidePayLayer'>忘记密码</view>
        <input class='input_control' password type='number' focus='{
   
   {payFocus}}' bindinput='inputPwd' maxlength='6'/>
    </view>
</view>

//获取应用实例
const app = getApp()

Page({
  data: {
    showPayPwdInput: false,  //是否展示密码输入层
    pwdVal: '',  //输入的密码
    payFocus: true, //文本框焦点
  },
  onLoad() {
    this.showInputLayer();
  },
  /**
   * 显示支付密码输入层
   */
  showInputLayer(){
    this.setData({ showPayPwdInput: true, payFocus: true });
  },
  /**
   * 隐藏支付密码输入层
   */
  hidePayLayer(){
    /**获取输入的密码**/
    var val = this.data.pwdVal;
	/**在这调用支付接口**/
    this.setData({ showPayPwdInput: false, payFocus: false, pwdVal: '' }, function(){
      /**弹框**/
      wx.showToast({
        title: val,
      })
    });

  },
  /**
   * 获取焦点
   */
  getFocus(){
    this.setData({ payFocus: true });
  },
  /**
   * 输入密码监听
   */
  inputPwd(e){
      this.setData({ pwdVal: e.detail.value });

      if (e.detail.value.length >= 6){
        this.hidePayLayer();
      }
  }
})

css

/* pages/category/index.wxss */.btn_pay{
  margin: 100rpx auto; width: 600rpx; height: 100rpx; line-height: 100rpx; border-radius: 100rpx;
  background-color: #d3a95a; color: #fff; font-size: 36rpx; text-align: center; 
}
/* 支付密码css start */
.bg_layer{
  position: fixed; left: 0; top: 0; bottom: 0; right: 0;
  background-color: rgba(0, 0, 0, 0.6); z-index: 9998;
}
.input_main{
    position: fixed; left: 0; bottom: 500rpx; width: 100%; height: 394rpx;
    background-color: #fff; z-index: 9999;
}
.input_title{
    width: 100%; height: 90rpx; line-height: 90rpx; text-align: center; 
    font-size: 32rpx; border-bottom: 1rpx solid #e2e2e2;
}
.input_back{
    position: absolute; left: 0; top: 0;
    width: 80rpx; height: 90rpx; display: flex; justify-content: center; align-items: center;
}
.input_back text{
  width: 20rpx;
  height: 20rpx;
  background-color: white;
  border: 1rpx solid #aaa;
  border-width: 5rpx 0 0 5rpx;
  transform: rotate(-45deg);
}

.input_tip{  margin: 30rpx; font-size: 24rpx; color: #888; }

/* 密码掩码模拟 */
.input_row{
  width: 690rpx; margin: 0 auto; height: 98rpx; position: relative;
  display: flex; align-items: center; border: 1rpx solid #e2e2e2; border-radius: 20rpx;
}
.input_row .pwd_item{
  flex: 1; display: flex; align-items: center; justify-content: center; 
  height: 100%; border-right: 1rpx solid #e2e2e2; position: relative;
}
.pwd_item:nth-last-of-type(1) { border-right: 0; } 
.pwd_item text { 
  width: 30rpx; height: 30rpx; border-radius: 30rpx; background-color: #555;
}


.forget_pwd{ 
  float: right; margin: 30rpx; width: 100rpx; text-align: right; font-size: 24rpx; color: #ff7800;
}

/* 文本输入框位置: 设置到左边隐藏 */
.input_control { 
  position: relative; left: -300rpx; bottom: 0; width: 100rpx; height: 100rpx;
}

微信小程序模拟支付界面

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