Android圖片Base64加密+文字上傳

商城專案圖片需要加密上傳,先看下介面:

介面圖如下:

1.兩個介面(加密和上傳介面):

    @FormUrlEncoded
    @POST("XXX")/**新增商品圖片(base64格式)*/
    Flowable<AddGoodsBean> addGoodsImg(@Field("img") String img, @Field("shopid") String shopid, @Field("uid") String uid);

    @FormUrlEncoded
    @POST("XXX")/**新增商品介面*/
    Flowable<CommonBean> addShopping(@Field("uid") String uid,@Field("shopid") String shopid,@Field("name")String name,
    @Field("typeid") String typeid,@Field("count") String count,@Field("cost") String cost,@Field("goods_type") String goods_type,
                                     @Field("img") String img);

2.從相簿選擇圖片,這裡我用的是第三方框架 PhotoPicker,注意許可權別忘記加了

        iv_add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                PhotoPicker.builder()
                        .setPhotoCount(1)
                        .setShowCamera(false)
                        .setShowGif(false)
                        .setPreviewEnabled(false)
                        .start(TemporaryDishActivity.this, PhotoPicker.REQUEST_CODE);

            }
        });

3.由於是單張圖片,所以得到的集合直接取第一個就行

   @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode == RESULT_OK && requestCode == PhotoPicker.REQUEST_CODE) {
            if (data != null) {
                int width = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 200,
                        TemporaryDishActivity.this.getResources().getDisplayMetrics());
                int height = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 200f,
                        TemporaryDishActivity.this.getResources().getDisplayMetrics());
                ArrayList<String> photos =
                        data.getStringArrayListExtra(PhotoPicker.KEY_SELECTED_PHOTOS);
                img = photos.get(0);
                //base64加密圖片上傳
                String s = ImageUtils.bitmapToString(img);
                mPresenter.addGoodImg(s, String.valueOf(shopid), String.valueOf(uid));
                Log.d("lwp", "s:" + s.toString() + " ;img:" + img.toString());
                iv_add.setImageBitmap(BitmapFactory.decodeFile(img));
            }
        }
    }

4.工具類:

public class ImageUtils {

    // 根據路徑獲得圖片並壓縮，返回bitmap用於顯示
    public static Bitmap getSmallBitmap(String filePath) {
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(filePath, options);

        // Calculate inSampleSize
        options.inSampleSize = calculateInSampleSize(options, 480, 800);

        // Decode bitmap with inSampleSize set
        options.inJustDecodeBounds = false;

        return BitmapFactory.decodeFile(filePath, options);
    }

    //計算圖片的縮放值
    public static int calculateInSampleSize(BitmapFactory.Options options,int reqWidth, int reqHeight) {
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;

        if (height > reqHeight || width > reqWidth) {
            final int heightRatio = Math.round((float) height/ (float) reqHeight);
            final int widthRatio = Math.round((float) width / (float) reqWidth);
            inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
        }
        return inSampleSize;
    }

    //把bitmap轉換成String
    public static String bitmapToString(String filePath) {
        Bitmap bm = getSmallBitmap(filePath);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        //1.5M的壓縮後在100Kb以內，測試得值,壓縮後的大小=94486位元組,壓縮後的大小=74473位元組
        //這裡的JPEG 如果換成PNG，那麼壓縮的就有600kB這樣
        bm.compress(Bitmap.CompressFormat.JPEG, 40, baos);
        byte[] b = baos.toByteArray();
        Log.d("d", "壓縮後的大小=" + b.length);
        return Base64.encodeToString(b, Base64.DEFAULT);
    }


}

5.最後上傳成功後結束當前頁面,並且傳送一個Eventbus黏性事件讓之前的頁面重新整理資料

    @Override
    public void onAddGoodsSuccess() {
  //      showTip("上傳成功");
        EventBus.getDefault().postSticky(new AddTemoporaryDishEvent(true));
        finish();
    }

    @Subscribe(threadMode = ThreadMode.MAIN,sticky = true)
    public void onAddEvent(AddTemoporaryDishEvent event){
        if (event.getAdd()){
            mPresenter = new ProductsPresenter(this);
            mPresenter.get_goodstype(String.valueOf(MyApplication.getInstance().shopid));
            showLoadingDialog();
        }
    }

下面的程式碼和主題就扯遠了.