SearchBar中使用style属性，输入框变形

[suwu150]

形状如下所示，

代码如下所示：

     <View style={{ flex: 1 }}>
        <SearchBar
          placeholder="Search"
          placeholderTextColor={'#999693'}
          style={{
              textAlign: 'left'
           }}
          onSubmit={value => console.log(value, 'onSubmit')}
          onClear={value => console.log(value, 'onClear')}
          onFocus={() => console.log('onFocus')}
          onBlur={() => console.log('onBlur')}
          onCancel={() => console.log('onCancel')}
          showCancelButton={false}
          autoCapitalize={'none'}
          onChange={this.onChange}
        />
      </View>

Environment:
OS: macOS High Sierra 10.13.4
Node: 8.3.0
Yarn: Not Found
npm: 5.3.0
Watchman: Not Found
Xcode: Xcode 9.3.1 Build version 9E501
Android Studio: 3.1 AI-173.4720617

Packages: (wanted => installed)
react: ^16.0.0 => 16.3.2
react-native: ^0.51.0 => 0.51.1
antd-mobile: "^2.1.8",

[ant-design-bot]

Translation of this issue:

---

SearchBar using style attribute, input box deformation

The shape is as follows

The code looks like this:

     <View style={{ flex: 1 }}>
        <SearchBar
          Placeholder="Search"
          placeholderTextColor={'#999693'}
          Style={{
              textAlign: 'left'
           }}
          onSubmit={value => console.log(value, 'onSubmit')}
          onClear={value => console.log(value, 'onClear')}
          onFocus={() => console.log('onFocus')}
          onBlur={() => console.log('onBlur')}
          onCancel={() => console.log('onCancel')}
          showCancelButton={false}
          autoCapitalize={'none'}
          onChange={this.onChange}
        />
      </View>

Environment:
  OS: macOS High Sierra 10.13.4
  Node: 8.3.0
  Yarn: Not Found
  Npm: 5.3.0
  Watchman: Not Found
  Xcode: Xcode 9.3.1 Build version 9E501
  Android Studio: 3.1 AI-173.4720617

Packages: (wanted => installed)
  React: ^16.0.0 => 16.3.2
  React-native: ^0.51.0 => 0.51.1
  Antd-mobile: "^2.1.8",