如何获取当前应用app所在的进程id和进程名称

int pid = Process.myPid();
String processName = "";
ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);

List<ActivityManager.RunningAppProcessInfo> list = activityManager.getRunningAppProcesses();
for (ActivityManager.RunningAppProcessInfo runningAppProcessInfo : list){
if (runningAppProcessInfo.pid == pid){
processName = runningAppProcessInfo.processName;
}
}

Log.i(TAG,"当前进程名称:" + processName);