Android判断主线程

 public static boolean isMainProcess(Context context) {
        ActivityManager am = ((ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE));
        if (am == null) {
            return false;
        }
        List<ActivityManager.RunningAppProcessInfo> processInfos = am.getRunningAppProcesses();
        if (processInfos == null) {
            return false;
        }
        String mainProcessName = context.getPackageName();
        int myPid = android.os.Process.myPid();
        for (ActivityManager.RunningAppProcessInfo info : processInfos) {
            if (info.pid == myPid && mainProcessName.equals(info.processName)) {
                return true;
            }
        }
        return false;
    }