title: Can not find symbol in MainActivity.java React-native Android
body: <p>I am adding image upload in my react native application. I installed well via npm and also linked them very well</p>
  
  <pre><code>react-native link react-native-image-picker
  react-native link react-native-image-resizer
  react-native link react-native-fs
  </code></pre>
  
  <p>now everytime i try to run the project i get these Errors</p>
  
  <blockquote>
    <p>Task :app:compileDebugJavaWithJavac
    C:\projects\aurity\potatoo\potato\android\app\src\main\java\com\potato2\MainApplication.java:6:
    error: package com.rnfs does not exist import com.rnfs.RNFSPackage;
                   ^ C:\projects\aurity\potatoo\potato\android\app\src\main\java\com\potato2\MainApplication.java:7:
    error: package fr.bamlab.rnimageresizer does not exist import
    fr.bamlab.rnimageresizer.ImageResizerPackage;
                                   ^ C:\projects\aurity\potatoo\potato\android\app\src\main\java\com\potato2\MainApplication.java:8:
    error: package com.imagepicker does not exist import
    com.imagepicker.ImagePickerPackage;
                          ^ C:\projects\aurity\potatoo\potato\android\app\src\main\java\com\potato2\MainApplication.java:30:
    error: cannot find symbol
                new RNFSPackage(),
                    ^   symbol: class RNFSPackage C:\projects\aurity\potatoo\potato\android\app\src\main\java\com\potato2\MainApplication.java:31:
    error: cannot find symbol
                new ImageResizerPackage(),
                    ^   symbol: class ImageResizerPackage C:\projects\aurity\potatoo\potato\android\app\src\main\java\com\potato2\MainApplication.java:32:
    error: cannot find symbol
                new ImagePickerPackage(),
                    ^</p>
    
    <p>symbol: class ImagePickerPackage</p>
  </blockquote>
  
  <p>When i check <code>MainApplication.java</code> and <code>MainActivity.java</code>  I have the package lines there.
  Any one Help? I cant figure out why this is happening and the solution</p>