（安卓）图片上传
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图片的上传至服务器 使用MVP模式：
MainActivity：view层接口：import android.content.Intent;import android.graphics.Bitmap;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.Toast;import com.facebook.drawee.backends.pipeline.Fresco;import com.facebook.drawee.view.SimpleDraweeView;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import butterknife.BindView;import butterknife.ButterKnife;import butterknife.OnClick;import bwie.com.day_lianxi_1220.bean.MessageBean;import bwie.com.day_lianxi_1220.http.ImageUtils;import bwie.com.day_lianxi_1220.presenter.NewsPresenter;import bwie.com.day_lianxi_1220.view.IView;import okhttp3.MediaType;import okhttp3.MultipartBody;import okhttp3.RequestBody;public class MainActivity extends AppCompatActivity implements IView{ @BindView(R.id.my_image_view) SimpleDraweeView mMyImageView; @BindView(R.id.btn_xiangji) Button mBtnXiangji; @BindView(R.id.btn_xiangce) Button mBtnXiangce; @BindView(R.id.btn_cancel) Button mBtnCancel; private File tempFile; private static final String PHOTO_FILE_NAME = "temp_photo.jpg"; private static final int PHOTO_REQUEST_CAREMA = 1;// 拍照 private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择 private static final int PHOTO_REQUEST_CUT = 3;// 结果 private NewsPresenter presenter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Fresco.initialize(this); setContentView(R.layout.activity_main); ButterKnife.bind(this); presenter = new NewsPresenter(); presenter.attachView(this); } @Override public void success(MessageBean o) { String msg = o.getMsg(); Log.e("zxz",msg); } @Override public void falise(Exception e) { } @OnClick({R.id.my_image_view, R.id.btn_xiangji, R.id.btn_xiangce, R.id.btn_cancel}) public void onClick(View v) { switch (v.getId()) { default: break; case R.id.my_image_view: break; case R.id.btn_xiangji: // 激活相机 Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); // 判断存储卡是否可以用，可用进行存储 if (hasSdcard()) { tempFile = new File(Environment.getExternalStorageDirectory(), PHOTO_FILE_NAME); // 从文件中创建uri Uri uri = Uri.fromFile(tempFile); intent.putExtra(MediaStore.EXTRA_OUTPUT, uri); } // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CAREMA startActivityForResult(intent, PHOTO_REQUEST_CAREMA); break; case R.id.btn_xiangce: // 激活系统图库，选择一张图片 Intent intent1 = new Intent(Intent.ACTION_PICK); intent1.setType("image/*"); // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_GALLERY startActivityForResult(intent1, PHOTO_REQUEST_GALLERY); break; case R.id.btn_cancel: break; } } /* * 判断sdcard是否被挂载 */ private boolean hasSdcard() { //判断ＳＤ卡手否是安装好的 media_mounted if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { return true; } else { return false; } } /* * 剪切图片 */ private void crop(Uri uri) { // 裁剪图片意图 Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(uri, "image/*"); intent.putExtra("crop", "true"); // 裁剪框的比例，1：1 intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); // 裁剪后输出图片的尺寸大小 intent.putExtra("outputX", 250); intent.putExtra("outputY", 250); intent.putExtra("outputFormat", "JPEG");// 图片格式 intent.putExtra("noFaceDetection", true);// 取消人脸识别 intent.putExtra("return-data", true); // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CUT startActivityForResult(intent, PHOTO_REQUEST_CUT); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == PHOTO_REQUEST_GALLERY) { // 从相册返回的数据 if (data != null) { // 得到图片的全路径 Uri uri = data.getData(); crop(uri); } } else if (requestCode == PHOTO_REQUEST_CAREMA) { // 从相机返回的数据 if (hasSdcard()) { crop(Uri.fromFile(tempFile)); } else { Toast.makeText(MainActivity.this, "未找到存储卡，无法存储照片！", Toast.LENGTH_SHORT).show(); } } else if (requestCode == PHOTO_REQUEST_CUT) { // 从剪切图片返回的数据 if (data != null) { Bitmap bitmap = data.getParcelableExtra("data"); /** * 获得图片 */ mMyImageView.setImageBitmap(bitmap); setImgByStr( bitmap); } try { // 将临时文件删除 tempFile.delete(); } catch (Exception e) { e.printStackTrace(); } } super.onActivityResult(requestCode, resultCode, data); } /** * 上传头像 */ public void setImgByStr(Bitmap bitmap) { if(bitmap != null){ // 拿着imagePath上传了 // ... } String imagePath = ImageUtils.savePhoto(bitmap, Environment .getExternalStorageDirectory().getAbsolutePath(), String .valueOf(System.currentTimeMillis())); Log.d("zxz","imagePath:"+imagePath); if(imagePath!=null){ File file=new File(String.valueOf(bitmap));//将要保存图片的路径 try { BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file)); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos); bos.flush(); bos.close(); } catch (IOException e) { e.printStackTrace(); } RequestBody photoRequestBody = RequestBody.create(MediaType.parse("image/png"), file); MultipartBody.Part photo = MultipartBody.Part.createFormData("file", file.getName(), photoRequestBody); presenter.getData("71",photo); } }}
import bwie.com.day_lianxi_1220.bean.MessageBean; public interface IView { void success(MessageBean o); void falise(Exception e);}p层：
public interface BasePresenter{ void getData(String uid, MultipartBody.Part file);}import android.util.Log;import bwie.com.day_lianxi_1220.bean.MessageBean;import bwie.com.day_lianxi_1220.model.NewModel;import bwie.com.day_lianxi_1220.view.IView;import io.reactivex.Flowable;import io.reactivex.android.schedulers.AndroidSchedulers;import io.reactivex.schedulers.Schedulers;import io.reactivex.subscribers.DisposableSubscriber;import okhttp3.MultipartBody;/** * Created by 迷人的脚毛！！ on 2017/12/20. */public class NewsPresenter implements BasePresenter{ private IView iv; private DisposableSubscriber<MessageBean> disposableSubscriber; public void attachView(IView iv){ this.iv = iv; } public void detachView(){ // 当Activity销毁的时候取消订阅时间，防止内存泄漏 if (disposableSubscriber != null) { if (disposableSubscriber.isDisposed()) { disposableSubscriber.dispose(); } } if (iv!=null){ iv = null; } } @Override public void getData(String uid, MultipartBody.Part file) { NewModel newModel = new NewModel(this); newModel.getData(uid,file); } public void getNews(Flowable<MessageBean> flowable) { disposableSubscriber = flowable.subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribeWith(new DisposableSubscriber<MessageBean>() { @Override public void onNext(MessageBean messageBean) { if(messageBean!=null){ iv.success(messageBean); } } @Override public void onError(Throwable t) { Log.e("zxz",t.getMessage()); } @Override public void onComplete() { } }); }}model层：
public class NewModel { private NewsPresenter presenter; public NewModel(NewsPresenter presenter) { this.presenter = presenter; } public void getData(String uid , MultipartBody.Part file){ Flowable<MessageBean> flowable = RetrofitUtils.getInstance().getService().getMusicList(uid, file); presenter.getNews(flowable); }}工具类：
import io.reactivex.Flowable;import okhttp3.MultipartBody;import retrofit2.http.Multipart;import retrofit2.http.POST;import retrofit2.http.Part;import retrofit2.http.Query; public interface ApiService { @Multipart @POST("upload?") Flowable<MessageBean> getMusicList(@Query("uid") String uid, @Part MultipartBody.Part file);}import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.PorterDuff;import android.graphics.PorterDuffXfermode;import android.graphics.Rect;import android.graphics.RectF;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException; public class ImageUtils { /** * Save image to the SD card * * @param photoBitmap * @param photoName * @param path */ public static String savePhoto(Bitmap photoBitmap, String path, String photoName) { String localPath = null; if (android.os.Environment.getExternalStorageState().equals( android.os.Environment.MEDIA_MOUNTED)) { File dir = new File(path); if (!dir.exists()) { dir.mkdirs(); } File photoFile = new File(path, photoName + ".png"); FileOutputStream fileOutputStream = null; try { fileOutputStream = new FileOutputStream(photoFile); if (photoBitmap != null) { if (photoBitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream)) { // 转换完成 localPath = photoFile.getPath(); fileOutputStream.flush(); } } } catch (FileNotFoundException e) { photoFile.delete(); localPath = null; e.printStackTrace(); } catch (IOException e) { photoFile.delete(); localPath = null; e.printStackTrace(); } finally { try { if (fileOutputStream != null) { fileOutputStream.close(); fileOutputStream = null; } } catch (IOException e) { e.printStackTrace(); } } } return localPath; } /** * 转换图片成圆形 * * @param bitmap 传入Bitmap对象 * @return */ public static Bitmap toRoundBitmap(Bitmap bitmap) { int width = bitmap.getWidth(); int height = bitmap.getHeight(); float roundPx; float left,top,right,bottom,dst_left,dst_top,dst_right,dst_bottom; if (width <= height) { roundPx = width / 2; top = 0; bottom = width; left = 0; right = width; height = width; dst_left = 0; dst_top = 0; dst_right = width; dst_bottom = width; } else { roundPx = height / 2; float clip = (width - height) / 2; left = clip; right = width - clip; top = 0; bottom = height; width = height; dst_left = 0; dst_top = 0; dst_right = height; dst_bottom = height; } Bitmap output = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect src = new Rect((int)left, (int)top, (int)right, (int)bottom); final Rect dst = new Rect((int)dst_left, (int)dst_top, (int)dst_right, (int)dst_bottom); final RectF rectF = new RectF(dst); paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); canvas.drawBitmap(bitmap, src, dst, paint); return output; }}import okhttp3.OkHttpClient;import retrofit2.Retrofit;import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;import retrofit2.converter.gson.GsonConverterFactory; public class RetrofitUtils { private static volatile RetrofitUtils instance; private Retrofit retrofit; private ApiService apiService; private RetrofitUtils(){ OkHttpClient client = new OkHttpClient(); retrofit = new Retrofit.Builder() .client(client) .addCallAdapterFactory(RxJava2CallAdapterFactory.create()) .addConverterFactory(GsonConverterFactory.create()) .baseUrl("http://120.27.23.105/file/") .build(); apiService = retrofit.create(ApiService.class); } public static RetrofitUtils getInstance(){ if (instance==null){ synchronized (RetrofitUtils.class){ if (null==instance){ instance = new RetrofitUtils(); } } } return instance; } public ApiService getService(){ return apiService; }}封装类：
public class MessageBean { /** * msg : 天呢！文件不能为空 * code : 1 */ private String msg; private String code; public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public String getCode() { return code; } public void setCode(String code) { this.code = code; }}阅读全文
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