如何在使用改造发送到服务器之前压缩捕获的图像文件大小

Question

我正在使用 Retrofit retrofit:2.1.0' 将文件图像上传到服务器

如果我使用前置摄像头拍摄图像成功上传但如果拍摄后置摄像头它没有上传我认为因为大文件大小的图像没有上传是否有任何选项可以在发送到服务器进行改造之前压缩文件大小？

文件发送编码

  map.put("complaint_category", RequestBody.create(parse("text"), caty_id_str.getBytes()));

    // Map is used to multipart the file using okhttp3.RequestBody
    File file = new File(Config.uriImage);
    // Parsing any Media type file
    RequestBody requestBody = RequestBody.create(parse("*/*"), file);
    MultipartBody.Part fileToUpload = MultipartBody.Part.createFormData("photo", file.getName(), requestBody);
    RequestBody filename = RequestBody.create(parse("text/plain"), file.getName());

    Call<PostComplaint> call3 = apiInterface.postComplaint(fileToUpload, filename, map);
    call3.enqueue(new Callback<PostComplaint>() {
        @Override
        public void onResponse(Call<PostComplaint> call, Response<PostComplaint> response) {

            progressDoalog.dismiss();

            PostComplaint respon = response.body();

            PostComplaint.Response respo = respon.getResponse();

            String result = respo.getResult();
            String data = respo.getData();
            if (result.equalsIgnoreCase("Success")) {

                Toast.makeText(getApplicationContext(), data, Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(Activity_Post_Complaint.this, MainActivity.class);
                startActivity(intent);

            } else {

                Toast.makeText(getApplicationContext(), data, Toast.LENGTH_SHORT).show();
            }

        }

        @Override
        public void onFailure(Call<PostComplaint> call, Throwable t) {
            progressDoalog.dismiss();
            Log.d("Error", "" + t.getMessage());
            call.cancel();
        }


    });

API接口

@Multipart
@POST("/somelink.php?")
Call<PostComplaint> postComplaint(@Part MultipartBody.Part file,
                               @Part("photo") RequestBody name,
                               @PartMap Map<String, RequestBody> fields);

API客户端.java

public class APIClient {

    private static Retrofit retrofit = null;

    static Retrofit getClient() {

        HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
        interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
        OkHttpClient client = new OkHttpClient.Builder().addInterceptor(interceptor)
                .connectTimeout(60, TimeUnit.SECONDS)
                .readTimeout(60, TimeUnit.SECONDS)
                .writeTimeout(60, TimeUnit.SECONDS)
                .build();

        retrofit = new Retrofit.Builder()
                .baseUrl("http://192.168.1.135")
                .addConverterFactory(GsonConverterFactory.create())
                .client(client)
                .build();

        return retrofit;
    }

}

Answer 1

尝试

int compressionRatio = 2; //1 == originalImage, 2 = 50% compression, 4=25% compress
File file = new File (imageUrl);
try {
    Bitmap bitmap = BitmapFactory.decodeFile (file.getPath ());
    bitmap.compress (Bitmap.CompressFormat.JPEG, compressionRatio, new FileOutputStream (file));
}
catch (Throwable t) {
    Log.e("ERROR", "Error compressing file." + t.toString ());
    t.printStackTrace ();
}