import id.zelory.compressor.Compressor; //导入依赖的package包/类
public static File CompressImage(int w, Context context, String path) {

        File f = new File(path);
        if(f.exists()) {




            Pair<Integer, Integer> p = getDimentions(/*mFile.getAbsolutePath()*/ path, w);
            return new Compressor.Builder(context)
                    .setMaxWidth(p.first)
                    .setMaxHeight(p.second)
                    .setQuality(75)
                    .setCompressFormat(Bitmap.CompressFormat.JPEG)
                    .build()
                    .compressToFile(/*ImageConverter.mFile*/new File(path));

        }
        else return null;
    }
 

import id.zelory.compressor.Compressor; //导入依赖的package包/类
public static File CompressImage(int w, Context context, String path) {
    Pair<Integer, Integer> p = getDimentions(/*mFile.getAbsolutePath()*/ path, w);
    return new Compressor.Builder(context)
            .setMaxWidth(p.first)
            .setMaxHeight(p.second)
            .setQuality(75)
            .setCompressFormat(Bitmap.CompressFormat.JPEG)
            .build()
            .compressToFile(/*ImageConverter.mFile*/new File(path));
}
 

import id.zelory.compressor.Compressor; //导入依赖的package包/类
/**
 * This method processes current cover selection and performs needed operation (copy image
 * from external storage to internal, compress it, etc) and finally notify through callback.
 */
@OnClick(R.id.dialog_edit_doc_ok)
public void onOkClick() {
    // if there is no callback, avoid performs useless operations
    if (mCallback == null) {
        dismiss();
        return;
    }
    int position = mViewPager.getCurrentItem();
    switch (position) {
        case 0:
            // color tab is selected
            int currentColor = mDocument.coverColor;
            int newColor = mAdapter.mColorFragment.mColor;
            // notify only if color has changed
            if (currentColor != newColor) {
                mCallback.onColorChanged(mAdapter.mColorFragment.mColor);
            }
            dismiss();
            return;
        case 1:
            // image tab is selected
            final String currentImage = mDocument.coverImage;
            final String newImage = mAdapter.mImageFragment.mImagePath;
            // notify only if image has changed
            if (currentImage.equals(newImage)) {
                dismiss();
                return;
            }
            // disable dialog fragment buttons meanwhile it is processing image operations
            // in background
            mOkButton.setEnabled(false);
            mCancelButton.setEnabled(false);
            new AsyncTask<Void, Void, String>() {
                @Override
                protected String doInBackground(Void... params) {
                    // copy and compress selected image to internal storage
                    ContextWrapper cw = new ContextWrapper(getActivity());
                    File directory = cw.getDir("media", Context.MODE_PRIVATE);
                    String randomName = UUID.randomUUID().toString();
                    try {
                        File compressedImage = new Compressor(getActivity())
                                .setMaxWidth(IMAGE_MAX_WIDTH_PX)
                                .setMaxHeight(IMAGE_MAX_HEIGHT_PX)
                                .setQuality(25)
                                .setCompressFormat(Bitmap.CompressFormat.JPEG)
                                .setDestinationDirectoryPath(directory.getAbsolutePath())
                                .compressToFile(new File(newImage), randomName);
                        return compressedImage.getAbsolutePath();
                    } catch (IOException e) {
                        Timber.d(e);
                        return null;
                    }
                }
                @Override
                protected void onPostExecute(String imagePath) {
                    // if image was processed correctly notify it
                    if (!TextUtils.isEmpty(imagePath)) {
                        mCallback.onImageChanged(imagePath);
                        dismiss();
                    } else {
                        Toast.makeText(getActivity(),
                                R.string.dialog_edit_doc_cover_image_process_msg,
                                Toast.LENGTH_SHORT).show();
                        mOkButton.setEnabled(true);
                        mCancelButton.setEnabled(true);
                    }
                }
            }.execute();
            return;
        default:
            Timber.e("Unexpected pager position: " + position);
    }

}
 

import id.zelory.compressor.Compressor; //导入依赖的package包/类
public File compressPhoto(File src) {
    return Compressor.getDefault(context).compressToFile(src);
}