Android回收-阿里云

Android 活动被回收了怎么办

当一个活动进入到了停止状态，是有可能被系统回收的。想象以下场景：应用中有一个活动A，用户在A的基础上启动了B，活动A进入了停止状态。这个时候由于系统内存不足，将活动A回收了，然后用户按Back键返回活动，这个时候活动A会正常显示，只不过这个时候并不会执行onRestart()方法&#...

Android内存分配/回收的一个问题-为什么内存使用很少的时候也GC

Android应用建立在Java虚拟机之上的，Google为了保证同时多个APP运行并及时唤醒，就为每个虚拟机设置了最大可使用内存，通过adb命令可以查看相应的几个参数，* [dalvik.vm.heapgrowthlimit]: [192m] * [dalvik.vm.heapmaxfree]: ...

开源Android容器化框架Atlas开发者指南

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【Android 内存优化】Java 内存模型 ( Java 虚拟机内存模型 | 线程私有区 | 共享数据区 | 内存回收算法 | 引用计数 | 可达性分析 )

文章目录一、 Java 虚拟机内存模型二、程序计数器 ( 线程私有区 )三、虚拟机栈 ( 线程私有区 )四、本地方法栈 ( 线程私有区 )五、方法区 ( 共享数据区 )1. 方法区2. 运行时常量池六、堆区 ( 共享数据区 )七、内存溢出类型八、引用计数算法回收内存九、可达性分析算法...

【朝花夕拾】Android性能篇之（三）Java内存回收

前言原文：【朝花夕拾】Android性能篇之（三）Java内存回收在上一篇日志（【朝花夕拾】Android性能篇之（二）Java内存分配）中有讲到，JVM内存由程序计数器、虚拟机栈、本...

[Android Memory] 手动回收ImageVIew的图片资源

ImageView默认是不进行图片资源的回收的，需要我们自己在activity或者fragment中进行回收： public static void releaseImageViewResouce(ImageView imageView) { if (imageView == null) retur...

android-手机内存分配和回收机制研究

Theory: There are two kinds of memory allocation mechanism : (1) Some large application ,like ...

Android项目：模仿ConvertView原理(ListView的getView方法)对View对象进行回收和复用

在项目优化过程中,通过MAT监控发现存在一处内存泄露,反复进入某个页面,内存占用越来越大。后分析找到了泄露原因,原来是在自定义列表中,将行布局的layout文件inflate成view对象的时候,每加载一次列表就要new出一组新的view对象。因为没有对这些布局一致的view进行复用,...

Android AdapterView 源码分析以及其相关回收机制的分析

前言忽然，发现，网上的公开资料都是教你怎么继承一个baseadapter，然后重写那几个方法，再调用相关view的 setAdpater()方法，接着，你的item 就显示在手机屏幕上了。很少有人关注android adpater模式机制的实现原理，比较深入的也不过是说说adapter getv...

Android 进程回收之LowMemoryKiller原理篇

在前面的文章Android进程保活一文中，对于LowMemoryKiller的概念做了简单的提及。LowMemoryKiller简称低内存杀死机制。简单来说，LowMemoryKiller(低内存杀手)是Andorid基于oomKiller原理所扩展的一个多层次oomKiller，OOMkiller...

Android的内存分配与回收

想写一篇关于android的内存分配和回收文章的想法来源于追查一个魅族手机图片滑动卡顿问题，我们想了很多办法还是没有避免他不停的GC，所以就打算详细的看看内存分配和GC的原理，为什么会不断的GC，GC ALLOC和GC COCURRENT有什么区别，能不能想办法扩大堆内存减少GC的频次...

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