在android中是什么意思，它是如何工作的？ [英] What is the meaning of URI in android and how does it work?

问题描述

我对uri感到很困惑，我根本没有得到uri的概念。我在网上研究过，我真的很困惑。我正在阅读wrox android编程书，他们提到了以下代码，我不明白uri.parse（）方法的作用。

I am really confused about uri and i am not getting the concept of uri at all. I researched online and i am really getting confused. I am reading the wrox android programming book and they mentioned the following code and i dont understand the role of uri.parse() method.

Intent intent = new Intent();
 intent.getdata(uri.parse(editext1.gettext().toString());

//什么角色uri.parse（）在上面的代码中做了什么？



我也见过这样的东西uri.parse（http://www.google.com ）....这是什么意思？



我非常困惑，有人可以用简单的语言解释我uri的概念是什么，解析是什么方法吗？

//what role does the uri.parse() do in the above code?

I have also seen something like this uri.parse("http://www.google.com")....what does it mean?

I am terribly confused and can someone explain me in simple terms what is the concept of uri and what does the parse method do?

推荐答案

在Android中，这意味着一个URI，统一资源标识符 [ ^ ] .Android API包含以下定义： ， Uri [ android.net 中的http://developer.android.com/reference/android/net/Uri.htmltarget =_ blanktitle =新窗口> ^ ]包。



但......你的代码中的一个看起来不像那样，Java是一种区分大小写的语言，所以Uri不等于uri。它们具有不同的含义，并且由于parse是一个静态函数，因此您的代码将无法编译。请将其更改为

In Android that means a URI, Uniform Resource Identifier[^]. The Android API contains the definition as, Uri[^] in android.net package.

But... The one in your code doesn't look like that, Java is a case-sensitive language, so Uri is not equal to uri. They have different meanings, and since parse is a static function, your code won't compile. Please change it to

// Changed 
//    1. getdata to getData
//    2. uri to Uri
//    3. gettext to getText
Intent intent = new Intent();
intent.getData(Uri.parse(editext1.getText().toString());

你必须保留名称原样，否则会导致代码出现问题。我希望代码可以正常工作（如果 edittext1 定义为写入另外，阅读所提供的资源以了解有关Uri或其他对象的更多信息。您将在官方Android文档中找到更多资源，请访问它们。:)

You must keep the names as they are, otherwise they will cause a problem in your code. I hope the code would work (if edittext1 is defined as it is written). Plus, read the resources provided to learn more about Uri or other objects. You will find a lot of more resources on official Android documentation, do visit them. :)

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