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前言

早上到下午搞了一天的bug

以上文字和博文没有任何牵连 只是被bug搞的很崩溃

进入正题

后台希望我们传一个file格式的图片 上传到服务器

看下实现效果

请求格式

使用Retrofit2

@Multipart    @POST(HttpService.UPLOAD_AVATAR)    Observable
   
    
     > uploadAvatar(@PartMap Map
     
       files,     @Part MultipartBody.Part file);
     
    
   

Presenter层代码逻辑实现

• 1.先实现对参数的封装

//创建 RequestBody，用于封装构建RequestBody    private RequestBody toRequestBody(String value) {        RequestBody requestBody = RequestBody.create(MediaType.parse("text/plain"), value);        return requestBody;    }

• 2.再操作接口

/**     * 上传头像     *     * @param path     */    @Override    public void uploadAvatar(String path) {        //文件格式        File file = new File(path);        // 创建 RequestBody，用于封装构建RequestBody        RequestBody requestFile =                RequestBody.create(MediaType.parse("multipart/form-data"), file);        //和后端约定好Key，这里的partName是用file        MultipartBody.Part body =                MultipartBody.Part.createFormData("file", file.getName(), requestFile);        if (UserUtils.getUserInfo() == null) return;        String userId = UserUtils.getUserInfo().getId() + "";        String token = StringUtils.getToken();        Map
   
     params = new HashMap<>();        params.put("user_id", toRequestBody(userId));        params.put("appid", toRequestBody(APP_ID));        params.put("token", toRequestBody(token));        mCompositeDisposable.add(mFullOilApi.uploadAvatar(params, body)                .subscribeOn(Schedulers.io())                .doOnSubscribe(new Consumer
    
     () {                    @Override                    public void accept(Disposable disposable) throws Exception {                        mCompositeDisposable.add(disposable);                        mPersonalInfoView.requestStart();                    }                })                .observeOn(AndroidSchedulers.mainThread())                .subscribe(new Consumer
     
      
       >() {                    @Override                    public void accept(BaseBean
       
         baseBean) throws Exception {                        mPersonalInfoView.requestComplete();                        if (baseBean.getCode() == SUCCESS) {                            if (UserUtils.getAppConfig() != null) {                                String apiUrl = UserUtils.getAppConfig().getApp_url();                                //按照后台要求拼接图片地址                                String imaUrl = apiUrl + "/static/images/upload/" + baseBean.getData().get(0).getSaveName();                                mPersonalInfoView.changeUserAvatar(imaUrl);                            }                        } else {                            mPersonalInfoView.showErrorMessage(baseBean.getMessage());                        }                    }                }, new Consumer
        
         () { @Override public void accept(Throwable throwable) throws Exception { mPersonalInfoView.showErrorMessage(HttpUtils.getHttpErrorMessage(mContext, throwable)); mPersonalInfoView.requestComplete(); } })); }
        
       
      
     
    
   

总结

如此头像上传就完成了 不过上传头像之前需要裁切

//裁剪图片  implementation 'com.github.yalantis:ucrop:2.2.1'

代码实现在这里也贴出来共享一下

//头像裁减public class CropActivity extends AppCompatActivity {    public static final String EXTRA_PATH = "extra_path";    public static final int REQUEST_CODE = 33;    private Unbinder mUnbinder;    @BindView(R.id.toolbar)    Toolbar mToolbar;    @BindView(R.id.ucropview)    UCropView mUCropView;    private GestureCropImageView mCropImage;    private OverlayView mOverlayView;    private String mOutputPath;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_crop);        StatusBarUtils.transparencyBar(this);        mUnbinder = ButterKnife.bind(this);        setSupportActionBar(mToolbar);        getSupportActionBar().setDisplayShowTitleEnabled(false);        mToolbar.setNavigationOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                onBackPressed();            }        });        mCropImage = mUCropView.getCropImageView();        mOverlayView = mUCropView.getOverlayView();        mCropImage.setTransformImageListener(mCropListener);        mCropImage.setRotateEnabled(false);        mOverlayView.setShowCropGrid(false);        String cacheDir = FileUtils.getAppPath();        File file = new File(cacheDir, "ucrop_user_avatar.jpg");        mOutputPath = file.getAbsolutePath();        Uri destinationUri = Uri.fromFile(file);        String path = getIntent().getStringExtra(EXTRA_PATH);        try {            mCropImage.setImageUri(Uri.parse(path), destinationUri);        } catch (Exception e) {            e.printStackTrace();        }    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.menu_confirm, menu);        return super.onCreateOptionsMenu(menu);    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        mCropImage.cropAndSaveImage(Bitmap.CompressFormat.JPEG, 70, new BitmapCropCallback() {            @Override            public void onBitmapCropped(@NonNull Uri resultUri, int offsetX, int offsetY, int imageWidth, int imageHeight) {                Log.e("CropActivity", "裁剪图片成功" + resultUri);                File file = new File(mOutputPath);                if (file.exists()) {                    Log.e("CropActivity", "图片大小" + file.getTotalSpace());                }                Intent intent = new Intent();                intent.putExtra(EXTRA_PATH, mOutputPath);                setResult(RESULT_OK, intent);                finish();            }            @Override            public void onCropFailure(@NonNull Throwable t) {                Log.e("CropActivity", "裁剪图片失败");            }        });        return true;    }    private TransformImageView.TransformImageListener mCropListener = new TransformImageView.TransformImageListener() {        @Override        public void onRotate(float currentAngle) {        }        @Override        public void onScale(float currentScale) {        }        @Override        public void onLoadComplete() {            mCropImage.setTargetAspectRatio(1);            mCropImage.postTranslate(1, 1);        }        @Override        public void onLoadFailure(@NonNull Exception e) {        }    };    @Override    protected void onDestroy() {        super.onDestroy();        mUnbinder.unbind();    }}

共勉

我要一步一步往上爬

在最高点乘着叶片往前飞

任风吹干流过的泪和汗

我要一步一步往上爬

等待阳光静静看着它的脸

小小的天有大大的梦想

我有属于我的天

任风吹干流过的泪和汗

总有一天我有属于我的天

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