compile 'io.reactivex:rxandroid:1.2.1'
compile 'io.reactivex:rxjava:1.1.6'

compile 'top.zibin:Luban:1.0.8'

Luban.get(this)
    .load(File)                     // pass image to be compressed
    .putGear(Luban.THIRD_GEAR)      // set compression level, defaults to 3
    .setCompressListener(new OnCompressListener() { // Set up return
    
        @Override
        public void onStart() {
            // TODO Called when compression starts, display loading UI here
        }
        @Override
        public void onSuccess(File file) {
            // TODO Called when compression finishes successfully, provides compressed image
        }
        
        @Override
        public void onError(Throwable e) {
            // TODO Called if an error has been encountered while compressing
        }
    }).launch();    // Start compression

Luban.get(this)
        .load(file)
        .putGear(Luban.THIRD_GEAR)
        .asObservable()
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .doOnError(new Action1<Throwable>() {
            @Override
            public void call(Throwable throwable) {
                throwable.printStackTrace();
            }
        })
        .onErrorResumeNext(new Func1<Throwable, Observable<? extends File>>() {
            @Override
            public Observable<? extends File> call(Throwable throwable) {
                return Observable.empty();
            }
        })
        .subscribe(new Action1<File>() {
            @Override
            public void call(File file) {
                // TODO called when compression finishes successfully, provides compressed image
            }
        });

Copyright 2016 Zheng Zibin

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.