Android压缩图片-阿里云

Android压缩图片文件大小到限定值以下

开发中会有用户头像上传的需求，为了节省流量，一般上传接口都会限制图片大小，比如1M。但是随着手机像素越来越高，这个限制很容易达到，所以需要客户端在上传图片进行压缩操作。先说一下思路：主要是等比缩小图片文件，辅之使用Bitmap#compress进行压缩。①第一步根据文件路径创建File对象，然后判断...

【Android 内存优化】Android 工程中使用 libjpeg-turbo 压缩图片 ( 初始化压缩对象 | 打开文件 | 设置压缩参数 | 写入压缩图像数据 | 完成压缩 | 释放资源 )

文章目录一、使用 libjpeg-turbo 压缩图片流程二、初始化 JPEG 压缩对象三、打开文件四、设置压缩参数五、开始压缩六、循环写入压缩数据七、完成图片压缩及收尾八、libjpeg-turbo 图片压缩案例 ( 官方示例 )九、libjpeg-turbo 压缩图片代码示例上一篇博客【And...

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【Android 内存优化】Android 工程中使用 libjpeg-turbo 压缩图片 ( JNI 传递 Bitmap | 获取位图信息 | 获取图像数据 | 图像数据过滤 | 释放资源 )

文章目录一、Bitmap 图像数据处理二、Java 层 Bitmap 对象转为 JNI 层 bitmap 对象三、获取 bitmap 中的图像数据四、过滤 bitmap 中的图像数据 ( 获取 RGB 数据剔除 A 通道数据 )五、释放资源六、Bitmap 图像数据处理在上一篇博客【Androi...

Android LruCache 压缩图片有效避免程序OOM

压缩加载大图片我们在编写Android程序的时候经常要用到许多图片，不同图片总是会有不同的形状、不同的大小，但在大多数情况下，这些图片都会大于我们程序所需要的大小。比如说系统图片库里展示的图片大都是用手机摄像头拍出来的，这些图片的分辨率会比我们手机屏幕的分辨率高得多。大家应该知道，我们编写的应用程...

Android压缩图片到100K以下并保持不失真的高效方法

在开发Android企业应用时，会经常上传图片到服务器，而我们公司目前维护的一个项目便是如此。该项目是通过私有apn与服务器进行交互的，联通的还好，但移动的速度实在太慢，客户在使用软件的过程中，由于上传的信息中可能包含多张图片，会经常出现上传图片失败的问题，为了解决这个问题，我们决定把照...

Android缩放drawable 压缩图片 matrix

Q：加载时图片时有一些图片太大,导致内存溢出,想把这些图片压缩成一个缩略图,该怎么做? 不能只是缩小图片大小,而是要把体积降下来,几百K的图片压缩成几K或几百B. A1：压缩图片质量: bitmap.compress(Bitmap.CompressFormat.JPEG,...

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