Android开发：图片过大导致bitmap的内存溢出问题_android trying to draw too large bitmap-优快云博客

本文链接：https://blog.youkuaiyun.com/SmallSnake_/article/details/124183675

本文探讨了Android开发中图片过大导致的Bitmap内存溢出问题，通过引入BitmapFactory.Options并设置inSampleSize参数来优化图片加载，降低内存消耗。

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项目场景：

Android开发：图片过大导致bitmap的内存溢出问题

问题描述

出现Canvas: trying to draw too large(151727408bytes) bitmap.错误

try {
            URL url = new URL(item.get("item_image").toString());
            // 获得连接
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(6000);//设置超时
            conn.setReadTimeout(6000);
            conn.setUseCaches(false);//不缓存
            conn.connect();
            InputStream is = conn.getInputStream();//获得图片的数据流
            Bitmap bitmap = BitmapFactory.decodeStream(is);
            is.close();
            holder.image.setImageBitmap(bitmap);
        } catch (Exception e) {
            System.out.println("异常为：");
            e.printStackTrace();
        }

解决方案：

加入options来缩小图片

try {
            URL url = new URL(item.get("item_image").toString());
            // 获得连接
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(6000);//设置超时
            conn.setReadTimeout(6000);
            conn.setUseCaches(false);//不缓存
            conn.connect();
            InputStream is = conn.getInputStream();//获得图片的数据流
            BitmapFactory.Options   options=new BitmapFactory.Options();
            options.inJustDecodeBounds =   false;
            options.inSampleSize =   10;
            Bitmap bitmap = BitmapFactory.decodeStream(is,null,options);
            is.close();
            holder.image.setImageBitmap(bitmap);
        } catch (Exception e) {
            System.out.println("异常为：");
            e.printStackTrace();
        }