调用系统相机，从图库选择，图片进行上传头像操作

首先添加权限

代码

 @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.icon://点击修改头像
                //弹出Dialog
               AlertDialog.Builder mBuilder = new AlertDialog.Builder(getActivity());
               View view=View.inflate(getActivity(),R.layout.alert,null);
                mAlertDialog = mBuilder.create();
                //添加布局
               mAlertDialog.setView(view);
               //展示弹框
               mAlertDialog.show();

                TextView camera=view.findViewById(R.id.camera);
                TextView picture=view.findViewById(R.id.picture);
                //拍照
                camera.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                        mUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory()+"/xx.png"));
                        intent.putExtra(MediaStore.EXTRA_OUTPUT, mUri);
                        startActivityForResult(intent,100);
                    }
                });
                //从图库选择
                picture.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent=new Intent(Intent.ACTION_PICK);
                        intent.setType("image/*");
                        startActivityForResult(intent,200);
                    }
                });
                break;
        }
    }

回调

 @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
       //调用系统相机
        if(requestCode==100&&resultCode==getActivity().RESULT_OK){
            crop(mUri);
        }
        //从图库选择
        if(requestCode==200&&resultCode==getActivity().RESULT_OK){
                crop(data.getData());
        }
        if(requestCode==300&&resultCode==getActivity().RESULT_OK){
            Bitmap bitmap=data.getParcelableExtra("data");
            icon.setImageBitmap(bitmap);

            //弹框消失
            mAlertDialog.dismiss();
            //保存图片到sd卡
            String path=saveImage("crop", bitmap);
            File file=new File(path);
            //请求上传图片操作
            mMyPresenter.upLoadIcon(uid,file);
        }
    }

保存图片的方法

//保存图片
  private String saveImage(String crop, Bitmap bitmap) {
      File appDir = new File(Environment.getExternalStorageDirectory().getPath());
      if (!appDir.exists()) {
          appDir.mkdir();
      }
      String fileName = crop + ".jpg";
      File file = new File(appDir, fileName);
      try {
          FileOutputStream fos = new FileOutputStream(file);
          bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
          fos.flush();
          fos.close();
          return file.getAbsolutePath();
      } catch (IOException e) {
          e.printStackTrace();
      }
      return null;
  }

裁剪方法

private void crop(Uri uri) {
    Intent intent=new Intent("com.android.camera.action.CROP");
    intent.setDataAndType(uri,"image/*");
    intent.putExtra("crop",true);
    intent.putExtra("aspectX",1);
    intent.putExtra("aspectY",1);
    intent.putExtra("outputX",250);
    intent.putExtra("outputY",250);
    intent.putExtra("return-data",true);
    startActivityForResult(intent,300);

}

上传图片的api

//上传头像
@Multipart
@POST("file/upload")
Observable uploadicon(@Query("uid") String uid, @Part MultipartBody.Part file);

裁剪完图片设置控件处请求上传头像数据

//请求上传图片操作
mMyPresenter.upLoadIcon(uid,file);

Presenter

//上传头像
    public void upLoadIcon(String uid, File file) {
        mMyModel.upLoadIcon(uid,file)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Action1() {
                    @Override
                    public void call(Object o) {
                        if (o != null) {
                            if (mIView != null)
                                mIView.success(o,2);
                            return;
                        }
                        if (mIView != null)
                            mIView.failed(new Throwable("上传头像失败"));
                    }
                }, new Action1() {
                    @Override
                    public void call(Throwable throwable) {
                        mIView.failed(new Throwable("上传失败"));
                    }
                });
    }

Model

public Observable upLoadIcon(String uid, File file) {
    MyApi myApi = RetrofitUtil_Home.getInstance().create(MyApi.class);
    RequestBody requestBody = RequestBody.create(MediaType.parse("image/*"),file);
    MultipartBody.Part part = MultipartBody.Part.createFormData("file",file.getName(),requestBody);
    Observable icon = myApi.uploadicon(uid, part);
    return icon;

}

具体也可以参考

http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2017/1102/8678.html