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【Android 内存优化】自定义组件长图组件 ( 长图滚动区域解码 | 手势识别 GestureDetector | 滑动计算类 Scroller | 代码示例 )

文章目录一、GestureDetector 创建与设置二、GestureDetector 触摸事件传递三、触摸滑动操作四、惯性滑动操作五、长图滑动组件代码示例六、运行效果七、源码及资源下载官方文档 API : BitmapRegionDecoder在【Android 内存优化】自定义组件长图组件 (...

【Android 内存优化】自定义组件长图组件 ( 获取图像宽高 | 计算解码区域 | 设置图像解码属性复用像素格式 | 图像绘制 )

文章目录一、获取图像真实宽高二、计算解码区域三、设置解码参数内存复用像素格式四、图像绘制五、执行效果六、源码及资源下载官方文档 API : BitmapRegionDecoder在【Android 内存优化】自定义组件长图组件 ( 自定义组件构造方法 ) 基础上继续开发 ;一、获取图像真实宽高显...

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【Android 内存优化】Bitmap 内存占用计算 ( Bitmap 图片内存占用分析 | Bitmap 内存占用计算 | Bitmap 不同像素密度间的转换 )

文章目录一、Bitmap 内存占用二、Bitmap 内存占用计算示例三、Bitmap 内存占用与像素密度四、Bitmap 内存占用与像素密度示例一、Bitmap 内存占用在 Android 中 Bitmap 对象在内存中存储的的像素格式有两种 : ARGB_8888 和 RGB_555 ;① ARG...

android 图片占用内存大小怎么计算：报错

xxhdpi文件夹中的密度是320-480 mdpi文件夹中的密度是120-160 如果，我的手机的密度正好是480，那一个图片600*800的图片从xxhdip中读取到内存中，消耗的内存是 600*800 但是，如果把这个图片放到mdpi文件夹中读取到内存中，其消耗内存应该是 1800 *2400...

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