cordova-plugin-gallery-thumbnail

cordova plugin for compressing images, use case example: gallery.

The loadThumbs function will create a background thread to load thumbs from a array of uri, so it will not block ui.

After saves all thumbs to the folder specified in thumbDir, successCallback will be called.

Dependencies

Currently you have to request read and write permissions by yourself, but the code will be add to plugin soon.

You can use the following plugin to request any permissions as you wish.

cordova plugin add cordova-plugin-android-permissions

Example

var scaleWidth = 100;
var scaleHeight = 100;
var quality = 50;
/*
* You can use another plugin to retrieve all origin images path:
*     cordova plugin add cordova-plugin-media-retrieve
* Also you can use any path as you wish, but be sure the image exists.
**/
ThumbCreator.loadThumbs(
                          ['/path/to/image1','/path/to/image2'], // paths of origin images
                          cordova.file.externalCacheDirectory,  // a directory which you want to save generated thumbnails
                          scaleWidth,  // thumbnail's scaled width, whiche should be equal to your display element's width
                          scaleHeight,  // thumbnail's scaled height
                          quality,  // an integer from 0 to 100
                          function (thumbnailImageAbsolutePathArray) {
                                  // success
                                  console.log(thumbailImageAbsolutePathArray);
                              }, function (err) {
                                  // failed
                                  console.log(err);
                              });