public class ProgressInfoUtil {
    //獲取進程總數(shù)
    public static int getProgressCount(Context context) {
        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningAppProcessInfo> runningAppProcessInfos = activityManager.getRunningAppProcesses();
        return runningAppProcessInfos.size();
    }

    /*
      返回可用內(nèi)存
     */
    public static long getAvailSpace(Context context) {
        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        ActivityManager.MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
        activityManager.getMemoryInfo(memoryInfo);
        return memoryInfo.availMem;
    }

    /*
    返回總共內(nèi)存
     */
    public static long getTotalSpace(Context context) {
        //totalMem最小版本是16
//        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
//        ActivityManager.MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
//        activityManager.getMemoryInfo(memoryInfo);
//        return memoryInfo.totalMem;
        BufferedReader bufferedReader = null;
        FileReader fileReader = null;
        try {
            fileReader = new FileReader("proc/meminfo");
            bufferedReader = new BufferedReader(fileReader);
            String lineOne = bufferedReader.readLine();
            char[] charArray = lineOne.toCharArray();
            StringBuilder stringBuilder = new StringBuilder();
            for (char c : charArray) {
                if (c >= '0' && c <= '9')
                    stringBuilder.append(c);
            }
            return Long.parseLong(stringBuilder.toString()) * 1024;
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (fileReader != null && bufferedReader != null) {
                try {
                    fileReader.close();
                    bufferedReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return 0;
    }

    /*
    返回運行應(yīng)用信息
     */
    public static ArrayList<ProgressInfoBean> getProgressInfo(Context context) {
        ArrayList<ProgressInfoBean> progressInfoBeen = new ArrayList<ProgressInfoBean>();
        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        PackageManager packageManager = context.getPackageManager();
        List<ActivityManager.RunningAppProcessInfo> list = activityManager.getRunningAppProcesses();
        //通過RunningAppProcessInfo和packageManager獲取進程相關(guān)信息,名稱,包名,所占內(nèi)存
        for (ActivityManager.RunningAppProcessInfo r : list) {
            ProgressInfoBean progressInfoBean = new ProgressInfoBean();
            //獲取包名
            progressInfoBean.packageName = r.processName;
            //獲取占用內(nèi)存的大小
            Debug.MemoryInfo[] memoryInfo = activityManager.getProcessMemoryInfo(new int[]{r.pid});
            progressInfoBean.memize = memoryInfo[0].getTotalPrivateDirty() * 1024;
            try {
                //獲取應(yīng)用圖標和名稱
                ApplicationInfo applicationInfo = packageManager.getApplicationInfo(progressInfoBean.packageName, 0);
                progressInfoBean.icon = applicationInfo.loadIcon(packageManager);
                progressInfoBean.name = applicationInfo.loadLabel(packageManager).toString();
                if ((applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == ApplicationInfo.FLAG_SYSTEM) {
                    progressInfoBean.isSystem = true;
                } else {
                    progressInfoBean.isSystem = false;
                }
            } catch (PackageManager.NameNotFoundException e) {
                e.printStackTrace();
                //異常處理
                progressInfoBean.icon = context.getResources().getDrawable(R.mipmap.ic_launcher);
                progressInfoBean.name = r.processName;
                progressInfoBean.isSystem = true;
            }
            progressInfoBeen.add(progressInfoBean);
        }
        return progressInfoBeen;
    }
    //殺死進程
    public  static void killProcess(Context context,ProgressInfoBean pb)
    {
        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        //殺進程要加權(quán)限,kill background process權(quán)限
        activityManager.killBackgroundProcesses(pb.packageName);
    }
    //殺死所有進程
    public  static  void killAllProcess(Context context)
    {
        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningAppProcessInfo> runningAppProcessInfos = activityManager.getRunningAppProcesses();
        for(ActivityManager.RunningAppProcessInfo r : runningAppProcessInfos) {
            if(r.processName.equals(context.getPackageName())) {
            }
            else {
                activityManager.killBackgroundProcesses(r.processName);
            }
        }
    }
    //檢查服務(wù)是否在運行
    public static boolean serviceIsRunning(Context ctx, String serviceName){
        //1,獲取activityMananger管理者對象,可以去獲取當前手機正在運行的所有服務(wù)
        ActivityManager mAM = (ActivityManager) ctx.getSystemService(Context.ACTIVITY_SERVICE);
        //2,獲取手機中正在運行的服務(wù)集合(多少個服務(wù))
        List<ActivityManager.RunningServiceInfo> runningServices = mAM.getRunningServices(1000);
        //3,遍歷獲取的所有的服務(wù)集合,拿到每一個服務(wù)的類的名稱,和傳遞進來的類的名稱作比對,如果一致,說明服務(wù)正在運行
        for (ActivityManager.RunningServiceInfo runningServiceInfo : runningServices) {
            //4,獲取每一個真正運行服務(wù)的名稱
            if(serviceName.equals(runningServiceInfo.service.getClassName())){
                return true;
            }
        }
        return false;
    }
   //檢查程序是否在運行

public static boolean activityIsRunning(Context context,String packageName)
{
    ActivityManager am = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> list = am.getRunningTasks(100);
    for (ActivityManager.RunningTaskInfo info : list) {
        if (info.topActivity.getPackageName().equals(packageName) || info.baseActivity.getPackageName().equals(packageName)) {
            return  true;
        }
    }
    return  false;
}