更新复选框prefefences最好的方法 [英] Best way to update checkbox prefefences

问题描述

我被编码为Android的时钟。对于它，我设置的更新画面1时间的函数每次一秒钟，因此我的程序会消耗大量的资源，而我的目标就是增加一个复选框，preference，消耗更少的资源，我可以。

I was coding a clock for android. For it, i set a function which updates screen 1 time each a second, so my program can consume a lot of resources, and my objective is to add a checkbox preference, consuming the less resources as I can.

然后，我的问题是：我看到了一些的方式与 onShared preferenceChangeListener 例如更新preferences ...这是消耗的方式系统资源少？我应该如何实现它向我的code？

Then, my question is: I have seen some ways to update preferences with onSharedPreferenceChangeListener for example... Which is the way which consumes less system resources? How should I implement it to my code?

推荐答案

如果您使用的是 preferenceActivity 您可以实现开preferenceClickListener 上的复选框设置一个监听器，然后在你的上preferenceClick 方法，关键你的框中设置并做什么你需要用它做

if you are using a PreferenceActivity you can implement the OnPreferenceClickListener set a listener on the checkbox then in your onPreferenceClick method with the key you set for the box and do what you need to do with it

@Override
public boolean onPreferenceClick(Preference preference) {
    if (preference.getKey().equals("schedulestart")) {
        showDialog(0);
    } else if (preference.getKey().equals("schedulestop")) {
        showDialog(1);
    } else if (preference.getKey().equals("priority")) {
        // Reset unread count when switching mailboxes. They might differ.
        getPreferenceManager().getSharedPreferences().edit().putInt("unreadcount", 0).commit();
    }
    return true;
}

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