blocks|key|2000876|text|如果你是一个熟练的C%2B%2B程序员，你应该不会有太多的问题来学习java，句号。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2000877|针对Android的开发与桌面java略有不同，但我提到了我前面的观点:如果你已经是一个熟练的程序员，你应该能够很容易地学会它。当你遇到困难时，在这里发布你遇到的问题。|2000878|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

If you're an adept C++ programmer, you should not have much trouble picking up java, period.

Developing for Android is a little bit different than desktop java, but I refer to my earlier point: if you're an adept programmer already, you should be able to pick it up easily. As you go along and get stuck, post questions here when you get stuck.

blocks|key|1266636|text|Android官方教程假定您已经了解Java。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1266637|无论如何，要遵循它们，您不必是一位Java专家。你应该只知道基础知识。|1266638|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

The official Android tutorial assume you already know Java.

Anyway, to follow them you don't have to be a Java expert. You should only know the basics.

blocks|key|3408970|text|我是从C#来的，问题只是理解安卓的做事方式，而不是任何特定的语言问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3408971|我推荐安卓系统上的Commonsware游戏。|offset|length|3408972|entityMap|0|LINK|mutability|MUTABLE|url|http://commonsware.com/^0|0|9|B|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

I am coming to it from C# and the issues are just understanding the Android way of doing things, rather than any particular language issues.

I recommend the <a href="http://commonsware.com" rel="nofollow noreferrer">Commonsware</a> titles on Android.

blocks|key|3408765|text|Android是一个基于Java的框架。所以拥有Java知识真的很有帮助。作为一名C%2B%2B开发人员，学习Java的基础知识并不难。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3408766|这可能会对你有帮助|3408767|http://primalpop.wordpress.com/2010/05/26/first-few-steps-in-android/|offset|length|3408768|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|1X|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@$F|R|G|S|1|T]]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|E]]]]

Android is a framework over Java. So having Java knowledge really helps. Being a C++ developer yourself, it wouldn't hard for you learn the basics of Java. 

This might help you

<a href="http://primalpop.wordpress.com/2010/05/26/first-few-steps-in-android/" rel="nofollow noreferrer">http://primalpop.wordpress.com/2010/05/26/first-few-steps-in-android/</a>

blocks|key|3408911|text|您可能想看看这些供C%2B%2B程序员使用的Java小抄：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3408912|3408913|http://www.cprogramming.com/tutorial/java/syntax-differences-java-c%2B%2B.html|unordered-list-item|offset|length|3408914|http://www4.ncsu.edu/~kaltofen/courses/Languages/JavaExamples/cpp_vs_java/|3408915|3408916|不过，我建议你买一本Java书和一本Android书。虽然互联网(和stackoverflow)对很多东西来说都很棒，但拥有几本好书可以节省大量的时间，我的朋友。你可以在stackoverflow上搜索问题，看看有哪些好的Android和Java书籍。甚至还有在线提供的free+pdf+books。|3408917|确切地说，要回答您的问题，是的，了解Java很重要-毕竟Java是您要使用的语言-但您不需要深入了解它，至少在一开始是这样。例如，您不需要了解从Effective之类的书中获得的更高级的内容。一定要记住，Android的大多数方法都受到Android框架的约束，所以了解Java会有所帮助，但还不够。总而言之，我想读一本好的Java和Android的书，遵循Google的教程，还有最后一条建议:别忘了你可以下载真正的Android源代码，它会在很多方面对你有帮助。|style|BOLD|3408918|entityMap|0|LINK|mutability|MUTABLE|url|http://www.cprogramming.com/tutorial/java/syntax-differences-java-c%2B%2B.html|1|2|http://www.mindview.net/Books/TIJ/^0|0|0|0|22|0|0|0|22|1|0|0|3R|E|2|0|5O|F|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|13|8|@]|9|@$F|14|G|15|1|16]]|A|$]]|$1|H|3|I|5|E|7|17|8|@]|9|@$F|18|G|19|1|1A]]|A|$]]|$1|J|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1C|8|@]|9|@$F|1D|G|1E|1|1F]]|A|$]]|$1|M|3|N|5|6|7|1G|8|@$F|1H|G|1I|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|I]]|Z|$5|T|U|V|A|$W|10]]]]

You may want to take a look at these Java cheatsheets for C++ programmers:

<ul>
<li><a href="http://www.cprogramming.com/tutorial/java/syntax-differences-java-c++.html" rel="nofollow noreferrer">http://www.cprogramming.com/tutorial/java/syntax-differences-java-c++.html</a></li>
<li><a href="http://www4.ncsu.edu/~kaltofen/courses/Languages/JavaExamples/cpp_vs_java/" rel="nofollow noreferrer">http://www4.ncsu.edu/~kaltofen/courses/Languages/JavaExamples/cpp_vs_java/</a></li>
</ul>

However, I recommend you get a Java book as well as an Android one. Although the internet (and stackoverflow) is great for lots of stuff, having a few good books can be a huge time saver, imho. You can search for questions on stackoverflow on what are good Android and Java books. There are even <a href="http://www.mindview.net/Books/TIJ/" rel="nofollow noreferrer">free pdf books</a> available online.

To answer your question specifically, yes, it's important to know Java - after all that's the language you're going to use - but you do not need a deep understanding of it, at least initially. For example, you don't need to know the more advanced stuff you'd get from a book such as Effective Java. Do keep it mind that most of the ways of doing things for Android is constrained by the Android framework, so knowing Java will help but will not suffice. To sum things up, I'd say read a good Java and a good Android book, follow the Google tutorials, and a last piece of advice: don't forget you can download the actual Android source code, which will help you in many ways.

blocks|key|1266657|text|当然，您还需要学习一些Java。然而，由于在Android上编程时有某些首选的“优化”，有人可能会说这是一个很好的学习场所。一定要遵循google提供的教程、文档和示例代码，这很棒。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1266658|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You will of course have to learn some Java. However as there are certain preferred 'optimizations' when coding on Android, one could argue it's a great theater for you to learn in.
Definitely follow the tutorials, documentation, and example code that google provides, it's great.

blocks|key|519344|text|在我看来，您的C%2B%2B知识应该足以掌握编写大多数Android应用程序所需的Java语言。一些Java语法可能会让你有点犯错，但我相信这不是什么不可逾越的事情，尤其是来自C%2B%2B背景的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|519345|与Android相关的大多数复杂性(并不是说它非常复杂)更多的是高级复杂性，而不是实际的Java。理解Android系统更像是理解一个计算机系统或框架，而不是理解Java的内部结构。|519346|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

In my opinion, your knowledge of C++ should be sufficient to pick up the Java necessary to write most Android applications. Some of the Java syntax may trip you up a bit, but IMO it wouldn't be anything that is insurmountable especially coming from a C++ background. 

Most of the complexity associated with Android (not that it is very complex) is more of a high level complexity rather than actual Java. Understanding the Android system is much more like understanding a computer system or a framework than understanding the innards of Java.

blocks|key|1266679|text|忘了语言和汉税吧。如果你能写一些伪代码，并且能理解OO模型，那么你就可以轻松地编写几乎所有的程序，只需要一些API引用和google搜索。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1266680|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Just forget about languages and sintax. If you can write some pseudo-code and can understand the OO model, then you can program almost everything easily, it's just a matter of some API references and google searches.

blocks|key|2000993|text|我知道你需要学习Java，也要学习使用Android+API，学习开发移动的哲学等。你对android世界的了解越深，你对所有这些问题的了解就会越深，这就像是一切都在一起！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2000994|重要的是要知道，Android的学习曲线相对较短:)|2000995|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I understand that you need to learn Java, and also going to have to learn to use the Android API, learn the philosophy of development Mobile, etc.
Just the basics yes, to begin ...
... The deepest you navigate the android world the deeper you will be knowing all these issues, it's like everything mate!

It's important to know that the learning curve is relatively short in Android :)

blocks|key|3408940|text|我也选择了以C#/VB.net作为我的主要语言的Android开发。我订购的书，我看到一遍又一遍的推荐是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3408941|3408942|Professional+Android+2+Application+Development+(Wrox+Programmer+to+Programmer)+(Paperback)|unordered-list-item|offset|length|3408943|3408944|entityMap|0|LINK|mutability|MUTABLE|url|https://rads.stackoverflow.com/amzn/click/com/0470565527^0|0|0|0|2I|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|S|8|@]|9|@$F|T|G|U|1|V]]|A|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

I too am picking up Android Development with C#/VB.net as my primary languages. The book I ordered and that I see recommended over and over again is: 

<ul>
<li><a href="https://rads.stackoverflow.com/amzn/click/com/0470565527" rel="nofollow noreferrer" rel="nofollow noreferrer">Professional Android 2 Application Development (Wrox Programmer to Programmer) (Paperback)</a></li>
</ul>

I am C++ developer interested in Android. As I understand the only possibility to develop applications for Android is Java. There is NDK also, but as I can see it is just something like JNI for Java. Is it mandatory to learn Java or to have deep knowledge in Java then try Android SDK, or it would be possible to learn Java while developing for Android. 

Thank you.

Is deep Java knowledge needed for Android?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我是对安卓感兴趣的C++开发人员。据我所知，为Android开发应用程序的唯一可能性是Java。也有NDK，但正如我所看到的，它就像Java的JNI。是否必须学习Java或在Java方面有深厚的知识，然后尝试Android SDK，或者可以在为Android开发时学习Java。谢谢。

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