Android學習點點滴滴之獲取系統可用內存

　　ActivityManager中包含的MemoryInfo是存儲系統內存信息的封裝類，我們可以掉用ActivityManager的getMemoryInfo（MemoryInfo outInfo）方法來獲取系統的可用內存大小。

ActivityManager  _ActivityManager = (ActivityManager) this
                .getSystemService(Context.ACTIVITY_SERVICE);

ActivityManager.MemoryInfo minfo = new ActivityManager.MemoryInfo();
        _ActivityManager.getMemoryInfo(minfo);
        
        Log.i("tag", String.valueOf(minfo.availMem/(1024*1024))+"MB");