android - 不再需要 ActivityManager - 不是服务问题

Question

我正在开发一个开源应用程序 (droidwall fork)，我遇到了一个问题，即系统重启时 iptables 规则没有正确应用。它适用于大多数 android 版本。但是在某些特定的 ROMS (CM 10.1) 上，它给出了以下 logcat

12-26 08:39:27.116 I/ActivityManager(582): 
No longer want dev.ukanth.ufirewall (pid 2297): empty #17

我的代码如下所示，

private Handler mHandler = new Handler(Looper.getMainLooper());
@Override
public void onReceive(final Context context, final Intent intent) {
    if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
        if (Api.isEnabled(context.getApplicationContext())) {
            final Handler toaster = new Handler() {
                public void handleMessage(Message msg) {
                    if (msg.arg1 != 0) Toast.makeText(context, msg.arg1, Toast.LENGTH_SHORT).show();
                }
            };

            mHandler.post(  
            // Start a new thread to enable the firewall - this prevents ANR
            new Runnable() {
                @Override
                public void run() {
                    if (!Api.applySavedIptablesRules(context.getApplicationContext(), false)) {
                        // Error enabling firewall on boot
                        final Message msg = new Message();
                        msg.arg1 = R.string.toast_error_enabling;
                        toaster.sendMessage(msg);
                        Api.setEnabled(context.getApplicationContext(), false, false);
                    }
                }
            });
            // Start a new thread to enable the firewall - this prevents ANR
        }
        /*Intent i = new Intent(context, StartupService.class);
        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startService(i);*/
    }

你可以找到我的 Api.java 类 here .

Answer 1

12-26 08:39:27.116 I/ActivityManager(582): No longer want dev.ukanth.ufirewall (pid 2297): empty #17

此日志表示您已达到允许的最大空进程数。 (16 是你的最大值)

更多关于 empty processes来自安卓文档:

A process that doesn't hold any active application components. The only reason to keep this kind of process alive is for caching purposes, to improve startup time the next time a component needs to run in it. The system often kills these processes in order to balance overall system resources between process caches and the underlying kernel caches.

因此，不确定您拥有的日志是否与您的 iptables 规则问题直接相关。