意向构造函数的语法 [英] Intent constructor syntax

问题描述

我刚开始开发Android（是一个.NET开发人员）

I am just starting to develop Android (being a .Net developer)

我下面从一本书code，并开始一个新的形式（屏幕），它显示了code

I am following the code from a book, and to start a new 'form' (screen) they show this code

Intent i = new Intent("net.learn2develop.ACTIVITY2");  

类定义是这样的：

The class definition is this:

package net.learn2develop.Activities;

//imports removed

public class Activity2 extends Activity {

我的问题是：我presume是在意图构造函数的字符串是类名。
但为什么'net.learn2develop ，而不是'net.learn2develop.Activities 为什么是所有类名帽？

My question is: i presume that the string in the constructor in the Intent is the classname. But why is it 'net.learn2develop' and not 'net.learn2develop.Activities' and why is the classname all caps?

推荐答案

看看文档：<一href=\"http://developer.android.com/reference/android/content/Intent.html#Intent%28java.lang.String%29\">Intent(String动作）。

所以，这其实是动作的名称，而不是类名。他们通常看起来非常相似，未prepared眼球。看看的Andr​​oidManifest.xml 并搜索 net.learn2develop.ACTIVITY2 字符串。你应该找到像服用点：

So this is actually action name, not class name. They usually look very similar to unprepared eye. Take a look at AndroidManifest.xml and search for net.learn2develop.ACTIVITY2 string. You should find somehting like:

   <activity android:name=".Activity2" >
        <intent-filter >
            <action android:name="android.intent.action.ACTIVITY2" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>

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