1：通過Build類和System類來獲取系統(tǒng)的信息，具體代碼如下所示：

 private String getDeviceInfo() {
        StringBuffer sb = new StringBuffer();
        sb.append("主板：" + Build.BOARD);
        sb.append("\n系統(tǒng)啟動程序版本號：" + Build.BOOTLOADER);
        sb.append("\n系統(tǒng)定制商：" + Build.BRAND);
        sb.append("\ncpu指令集：" + Build.CPU_ABI);
        sb.append("\ncpu指令集2" + Build.CPU_ABI2);
        sb.append("\n設置參數(shù)：" + Build.DEVICE);
        sb.append("\n顯示屏參數(shù)：" + Build.DISPLAY);
        sb.append("\n無線電固件版本：" + Build.getRadioVersion());
        sb.append("\n硬件識別碼：" + Build.FINGERPRINT);
        sb.append("\n硬件名稱：" + Build.HARDWARE);
        sb.append("\nHOST:" + Build.HOST);
        sb.append("\n修訂版本列表：" + Build.ID);
        sb.append("\n硬件制造商：" + Build.MANUFACTURER);
        sb.append("\n版本：" + Build.MODEL);
        sb.append("\n硬件序列號：" + Build.SERIAL);
        sb.append("\n手機制造商：" + Build.PRODUCT);
        sb.append("\n描述Build的標簽：" + Build.TAGS);
        sb.append("\nTIME:" + Build.TIME);
        sb.append("\nbuilder類型：" + Build.TYPE);
        sb.append("\nUSER:" + Build.USER);
        sb.append("\n路徑分隔符:" + System.getProperty("path.separator"));
        sb.append("\n行分隔符:" + System.getProperty("line.separator"));
        sb.append("\n文件分隔符:" + System.getProperty("file.separator"));
        sb.append("\njava版本:" + System.getProperty("java.version"));
        return sb.toString();
    }
輸出結果為：
                                          主板：KIW-AL10
                                          系統(tǒng)啟動程序版本號：unknown
                                          系統(tǒng)定制商：HONOR
                                          cpu指令集：arm64-v8a
                                          cpu指令集2
                                          設置參數(shù)：HNKIW-Q
                                          顯示屏參數(shù)：KIW-AL10C92B443
                                          無線電固件版本：20234,20234
                                          硬件識別碼：HONOR/KIW-AL10/HNKIW-Q:6.0.1/HONORKIW-AL10/C92B443:user/release-keys
                                          硬件名稱：qcom
                                          HOST:localhost#1
                                          修訂版本列表：HONORKIW-AL10
                                          硬件制造商：HUAWEI
                                          版本：KIW-AL10
                                          硬件序列號：QMS0216608002654
                                          手機制造商：KIW-AL10
                                          描述Build的標簽：release-keys
                                          TIME:1513118432000
                                          builder類型：user
                                          USER:android
                                          路徑分隔符::
                                          行分隔符:
                                          
                                          文件分隔符:/
                                          java版本:0

2：PackageManager

常用的方法如下所示：

示例代碼如下：

PackageManager packageManager=getPackageManager();   List<ApplicationInfo>list=packageManager.getInstalledApplications(PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);
        for (int i = 0; i < list.size(); i++) {
            Log.d("CeShi", list.get(i).toString()+"\n");//輸出手機上安裝的app的包信息
        }

3：ActivityManager

示例代碼如下：

ActivityManager activityManager= (ActivityManager) getSystemService(ACTIVITY_SERVICE);    List<ActivityManager.RunningAppProcessInfo>list=activityManager.getRunningAppProcesses();
                for (int i = 0; i < list.size(); i++) {
                    Debug.MemoryInfo[] memoryInfos=activityManager.getProcessMemoryInfo(new int[]{list.get(i).pid});
                    Log.d("CeShi", list.get(i).processName + "," +memoryInfos[i].getTotalPss());//只輸出了當前app進程，輸出結果為：com.example.liang.arlvyou,12877
                }