图片上传为什么要压缩

1.能否直接上传原图，让后台处理？

1.图片服务器的磁盘空间非常贵

2.尽可能避免安卓OOM异常

3.后台约束的规则，比如每张图片必须《=300KB

如何使用：

在build.gradle中引入：

io.github.yeszj:simpleCompress:1.0.0

使用之前需要申请权限 Manifest.permission.WRITE_EXTERNAL_STORAGE，如需要拍照功能的还需要申请 Manifest.permission.CAMERA权限

1.单张图片压缩
imgPath图片原始路径
private void startCompress(String imgPath) {
    SimpleCompressConfig simpleCompressConfig = SimpleCompressConfig.builder().
            setMaxSize(100 * 1024).//压缩到100M以内
            setCacheDir(Constants.BASE_CACHE_PATH + getPackageName() + "/cache/" + Constants.SIMPLE_COMPRESS_CACHE)//压缩后图片输出路径
            .create();
    SimpleCompressManager.build(this, simpleCompressConfig, new CompressSingleResultListener() {
        @Override
        public void onCompressSuccess(String fileName) {
            Log.d("------->", String.format("压缩成功,输出路径为：%s", fileName));
        }
        @Override
        public void onCompressFail(String imgPath, String error) {
            Log.d("------->", String.format("压缩失败：%s%s", imgPath, error));
        }
    }).startSingleCompress(imgPath);
}   

2.多张图片压缩
List<CompressPhotoInfo> list;
private void startCompress(String imgPath) {
    //为了方便测试，在这直接初始化了一个数组
    list = new ArrayList<>();
    CompressPhotoInfo photoInfo = new CompressPhotoInfo();
    photoInfo.setOriginalPath(imgPath);
    list.add(photoInfo);
    
    SimpleCompressConfig simpleCompressConfig = SimpleCompressConfig.builder().
            setMaxSize(100 * 1024).
            setCacheDir(Constants.BASE_CACHE_PATH + getPackageName() + "/cache/" + Constants.SIMPLE_COMPRESS_CACHE)
            .create();
    SimpleCompressManager.build(this, simpleCompressConfig, list, new CompressResultListener() {
        @Override
        public void onCompressSuccess(List<CompressPhotoInfo> compressSuccessList) {
            CompressPhotoInfo photoInfo = compressSuccessList.get(0);
            String compressPath = photoInfo.getCompressPath();
            Log.d("------->", String.format("压缩成功,输出路径为：%s", compressPath));
        }
        @Override
        public void onCompressFail(List<CompressPhotoInfo> compressImgList) {
            Log.d("------->", "压缩失败");
        }
    }).startCompress();
}