react-native-image-water

＃iOS 设置九宫格位置的水印,初始图片大小,保存图片到新建相册

iOS

1. npm install react-native-image-water --save
2. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
3. Go to node_modules ➜ react-native-camera and add RNImageWatermark.xcodeproj
4. In XCode, in the project navigator, select your project. Add RNImageWatermark.a to your project's Build Phases ➜ Link Binary With Libraries
5. Click RNImageWatermark.xcodeproj in the project navigator and go the Build Settings tab. Make sure 'All' is toggled on (instead of 'Basic'). In the Search Paths section, look for Header Search Paths and make sure it contains both $(SRCROOT)/../../../node_modules/react-native/React and $(SRCROOT)/../../react-native/Libraries - mark both as recursive.
6. Run your project (Cmd+R)

####使用说明

##1、先引用库
import { ImageWatermark } from 'react-native-image-water';

##2、接口说明
/*初始化图片大小*
＊@para path         string   要初始化的图片物理地址
＊@para width        int      重新设置宽
＊@para height       int      重新设置高
＊@para format       string   格式化类型(JPEG、PNG)
＊@para quality      int      图片质量(0-100)
＊@para rotation     int      图片旋转角度(0-360)
＊@para outputPath   string   图片导出后保存的物理位置
＊@retrun promise    string   返回图片保存的物理位置
*/
let outputPathNew = await ImageWatermark.createResizedImage(path, width, height, format, quality, rotation, outputPath);

/*给图片加水印*
＊@para path                 string   要加水印的图片物理地址
＊@para watermarkText        string   水印字体
＊@para watermarkPosition    int      水印在九宫格位子（1-9）
＊@para watermarkSize        int      水印字体大小
＊@para outputPath           string   图片导出后保存的物理位置
＊@retrun promise            string   返回图片保存的物理位置
*/
let path = await ImageWatermark.addImageWatermark(path, watermarkText, watermarkPosition, watermarkSize, outputPath);

/*将图片保存新建相册*
＊@para path            string   要保存的图片物理地址
＊@para albumName       string   要保存到的新建相册名称
＊@retrun promise       string   返回是否保存成功的信心
*/
let msg = await ImageWatermark.addPhotoAlbum(path, albumName);