SharedPreferences中的commit()和apply()有什么区别 [英] What's the difference between commit() and apply() in SharedPreferences

问题描述

我在我的Android应用中使用SharedPreferences.我正在使用共享首选项中的commit()和apply()方法.当我使用AVD 2.3时，它没有显示任何错误，但是当我在AVD 2.1中运行代码时，apply()方法显示了错误.

I am using SharedPreferences in my android app. I am using both commit() and apply() method from shared preference. When I use AVD 2.3 it shows no error, but when I run the code in AVD 2.1, apply() method shows error.

那么这两者之间有什么区别?通过仅使用commit()，我可以毫无问题地存储首选项值吗?

So what's the difference between these two? And by using only commit() can I store the preference value without any problem?

推荐答案

apply()已在2.3中添加，它会提交而不会，返回表示成功或失败的布尔值.

apply() was added in 2.3, it commits without returning a boolean indicating success or failure.

commit()返回 true ，否则返回 false .

apply()是因为Android开发团队注意到几乎没有人注意到返回值，因此apply更快，因为它是异步的.

apply() was added as the Android dev team noticed that almost no one took notice of the return value, so apply is faster as it is asynchronous.

http://developer.android.com/reference/android/content/SharedPreferences.Editor.html#apply()

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