Android-如何获得当前正在运行的activity和进程的相关信息

    ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
    RunningTaskInfo info = manager.getRunningTasks(1).get(0); //获得信息
    String shortClassName = info.topActivity.getShortClassName();    //类名
    String className = info.topActivity.getClassName();              //完整类名

    String packageName = info.topActivity.getPackageName();          //包名

         /**
* 判断进程是否运行
* @return
*/
public static boolean isProessRunning(Context context, String proessName) {


boolean isRunning = false;
ActivityManager am = (ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE);


List<RunningAppProcessInfo> lists = am.getRunningAppProcesses();
for (RunningAppProcessInfo info : lists) {
if (info.processName.equals(proessName)) {
isRunning = true;
}
}


return isRunning;
}