安卓仿微信上传图片问题（2）

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/lmy0111ly/article/details/50606744

之前那样做，发现图片好模糊，加了一个压缩图片的，还有存储图片的方法如下：

大神的demo地址：http://blog.csdn.net/jdsjlzx/article/details/44160603#html
微信上传图片问题链接：http://blog.csdn.net/lmy0111ly/article/details/50586455#comments

1. 照相机以及返回结果

//照相机
    public void photo() {
        File file = new File(Environment.getExternalStorageDirectory(), "/shopping/cache/");
        if (!file.exists())
            file.mkdirs();
        filePath = Environment.getExternalStorageDirectory() + "/shopping/cache/";
        fileName = String.valueOf(System.currentTimeMillis() + ".png");

        Intent openCameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        openCameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(filePath, fileName)));
        startActivityForResult(openCameraIntent, TAKE_PICTURE);
    }

    //照相机返回的图片
    protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
        switch (requestCode) {
            case TAKE_PICTURE:
                if (Bimp.tempSelectBitmap.size() < 9 && resultCode == RESULT_OK) {
                    builder = new CustomDialogLoading.Builder(this, "正在处理图片，请稍后...");
                    mDialog = builder.create();
                    mDialog.show();
                    Thread thread = new Thread(new Runnable() {
                        @Override
                        public void run() {
                            path = filePath + fileName;
                            Bitmap bm = FileUtils.convertToBitmap(path, 480, 800);//大小压缩
                            String savePath = FileUtils.saveBitmap(bm, fileName);//质量压缩并存储
                            ImageItem takePhoto = new ImageItem();
                            takePhoto.setBitmap(bm);
                            takePhoto.setImagePath(savePath);
                            Bimp.tempSelectBitmap.add(takePhoto);
                            handler.sendEmptyMessage(0);
                        }
                    });
                    thread.start();
                }
                break;

        }
    }

2. 压缩图片及存储图片方法

public class FileUtils {

    /**
     * 根据路径加载bitmap  将缩放后的bitmap返回去
     *
     * @param path 路径
     * @param w    宽
     * @param h    长
     * @return
     */
    public static  Bitmap convertToBitmap(String path, int w, int h) {
        try {
            BitmapFactory.Options opts = new BitmapFactory.Options();
            // 设置为ture只获取图片大小
            opts.inJustDecodeBounds = true;
            opts.inPreferredConfig = Bitmap.Config.ARGB_8888;
            // 返回为空
            BitmapFactory.decodeFile(path, opts);
            int width = opts.outWidth;
            int height = opts.outHeight;
            float scaleWidth = 0.f, scaleHeight = 0.f;
            if (width > w || height > h) {//如果宽度大于 传入的宽度  或者 高度大于 传入的高度大于
                // 缩放
                scaleWidth = ((float) width) / w;
                scaleHeight = ((float) height) / h;
            }
            opts.inJustDecodeBounds = false;
            //缩放后的高度和宽度取最大值
            float scale = Math.max(scaleWidth, scaleHeight);
            opts.inSampleSize = (int) scale;//此处是最后的宽高值
//            //WeakReference 弱引用
//            WeakReference<Bitmap> weak = new WeakReference<Bitmap>actory.decodeFile(path, opts));
//            Bitmap bMapRotate = Bitmap.createBitmap(weak.get(BitmapF(), 0, 0, weak.get().getWidth(), weak.get().getHeight(), null, true);
            Bitmap bMapRotate = BitmapFactory.decodeFile(path, opts);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            bMapRotate.compress(Bitmap.CompressFormat.JPEG, 50, baos);
            ByteArrayInputStream bais=new ByteArrayInputStream(baos.toByteArray());
            Bitmap bitmap = BitmapFactory.decodeStream(bais);
            System.out.println("质量 压缩---------------width-" + bMapRotate.getWidth() + "---height--" + bMapRotate.getHeight()+"------------------size---"+bMapRotate.getRowBytes());
            if (bMapRotate != null) {
                return bMapRotate;
            }
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
/**
     * 存储图片，返回路径
     * @param bm
     * @param picName
     * @return
     */
    public static String saveBitmap(Bitmap bm, String picName) {
        try {
            if (!isFileExist(picName)) {
                File tempf = createSDDir("");
            }
            File f = new File(SDPATH, picName);

            if (f.exists()) {
                f.delete();

            }
            FileOutputStream out = new FileOutputStream(f);
            bm.compress(Bitmap.CompressFormat.PNG, 70, out);
            out.flush();
            out.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return SDPATH + picName;
    }
}