【菜鸟学安卓】- 获取网络图片二 BitmapFactory options OutOfMemery问题内存溢出

上次我们提到要把网络图片的输入流先转成字节数组，这样就解决了内存溢出的问题

实现的代码如下：

    //获取图片资源
    public static Bitmap getBitmapImage(String path){
        Bitmap bitmap = null;
        if(!TextUtils.isEmpty(path)){
            URL url = null;
            try {
                url = new URL(path);
                HttpURLConnection conn = (HttpURLConnection)url.openConnection();
                int code = conn.getResponseCode();
                if(code == 200){
                    InputStream is = conn.getInputStream();
                    byte[] data = getByteArray(is);//转换成字节数组
                    BitmapFactory.Options options = new BitmapFactory.Options();
                    options.inJustDecodeBounds = true;
                    bitmap = BitmapFactory.decodeByteArray(data, 0, data.length, options);
                    options.outHeight = options.outHeight * options.outWidth/200;
                    options.outWidth = 200;
                    options.inSampleSize = options.outHeight/200;
                    options.inJustDecodeBounds = false;//重新读入图片，注意这次要把options.inJustDecodeBounds 设为 false哦
                    options.inPreferredConfig = Bitmap.Config.ARGB_4444;// 默认是Bitmap.Config.ARGB_8888
                    options.inPurgeable = true;
                    options.inInputShareable = true;
                    bitmap = BitmapFactory.decodeByteArray(data, 0, data.length, options);
                    System.out.println(options.outWidth + " " + options.outHeight);
                    return bitmap;
                }else{
                    return null;
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }else{
            return null;
        }
    }

    //转换输入流为字节流
    public static byte[] getByteArray(InputStream is){
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        byte[] buf = new byte[1024];
        int len = 0;
        try {
            while((len = is.read(buf)) != -1){
                outputStream.write(buf,0,len);
            }
            return outputStream.toByteArray();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

主要替换了实现语句为

bitmap = BitmapFactory.decodeByteArray(data, 0, data.length, options);

这样就完美的解决了问题

备注：纯属本人学习笔记、积累知识、需要的随意看看。