java 以编程方式查找 Android 系统信息
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Programmatically find Android system info
提问by Chris Ridmann
I am trying to programatically find the system info for Android devices, specifically:
我正在尝试以编程方式查找 Android 设备的系统信息，特别是：
- RAM
- CPU speed
- # cores, architecture, etc.
- 内存
- CPU速度
- # 内核、架构等。
Are there any Android classes that specify this information. I have been using the android.board library, but it doesn't seem to have everything that I want.
是否有任何指定此信息的 Android 类。我一直在使用 android.board 库，但它似乎没有我想要的一切。
回答by Shankar Agarwal
Let me tell you what I did, So others who visit this thread can come to know the steps:
让我告诉你我做了什么，所以访问这个线程的其他人可以知道这些步骤：
1) parse /proc/meminfo command. You can find reference code here: Get Memory Usage in Android2) use below code and get current RAM:
1) 解析 /proc/meminfo 命令。您可以在此处找到参考代码： Get Memory Usage in Android2) 使用以下代码并获取当前 RAM：
MemoryInfo mi = new MemoryInfo();
ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
activityManager.getMemoryInfo(mi);
long availableMegs = mi.availMem / 1048576L;
Note: please note that - we need to calculate total memory only once. so call point 1 only once in your code and then after, you can call code of point 2 repetitively.
注意：请注意——我们只需要计算一次总内存。所以在你的代码中只调用点 1 一次，然后你可以重复调用点 2 的代码。
回答by slayton
You can get most of the information you want from the /proc/cpuinfofile. Here is a tutorial on how to load and parse that file: http://www.roman10.net/how-to-get-cpu-information-on-android/
您可以从/proc/cpuinfo文件中获取大部分所需信息。这是有关如何加载和解析该文件的教程：http: //www.roman10.net/how-to-get-cpu-information-on-android/
Additionally the information about the RAM can be obtained from the /proc/meminfofile
此外，可以从/proc/meminfo文件中获取有关 RAM 的信息
回答by Amit Pathak
Here is the code snippet to get the current device RAM size.
这是获取当前设备 RAM 大小的代码片段。
ActivityManager actManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
MemoryInfo memInfo = new ActivityManager.MemoryInfo();
actManager.getMemoryInfo(memInfo);
long totalMemory = memInfo.totalMem;
回答by Dan
Agarwal's answer was very helpful. Had to modify it a bit since I'm not calculating free memory in an activity, but passing in an application context to a system utilities file:
阿加瓦尔的回答非常有帮助。不得不稍微修改一下，因为我不是在计算活动中的可用内存，而是将应用程序上下文传递给系统实用程序文件：
From the main activity:
从主要活动：
public class MyActivity extends Activity {
...
public void onCreate(Bundle savedInstanceState) {
...
MySystemUtils systemUtils = new MySystemUtils(this); // initializations
...
}
}
In the SystemUtils file:
在 SystemUtils 文件中：
MySystemUtils (Context appContext) { // called once from within onCreate
MemoryInfo mi = new MemoryInfo();
ActivityManager activityManager = ActivityManager)appContext.getSystemService(Activity.ACTIVITY_SERVICE);
activityManager.getMemoryInfo(mi);
long availableMegs = mi.availMem / 1048576L;
}
