blocks|key|3634068|text|因为R.java是自动生成的，所以我认为编辑它是一个非常糟糕的主意。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3634069|有时在使用Eclipse时，我会收到一些关于R.java的奇怪错误，为了解决这个问题，我只是清理了项目，然后一切都恢复正常了。|3634070|有关资源的更多信息，请查看此链接：http://developer.android.com/guide/topics/resources/accessing-resources.html|offset|length|3634071|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/guide/topics/resources/accessing-resources.html^0|0|0|H|24|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@$F|S|G|T|1|U]]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

As R.java is auto-generated, I think it is a pretty bad idea editing it.

Sometimes when using Eclipse, I get some strange errors concerning R.java, to solve this, I just clean the project, and then every is working again.

Check out this link for more information on resources: <a href="http://developer.android.com/guide/topics/resources/accessing-resources.html" rel="nofollow">http://developer.android.com/guide/topics/resources/accessing-resources.html</a>

blocks|key|5247687|text|每次构建时都会重新创建R.java文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5247688|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|$]]

The R.java file is re-created on every build.

blocks|key|3634098|text|如前所述，R文件是(或应该)在每次构建时自动重新生成的。你应该尝试一些依赖注入框架(Roboguice对于Android编程很有效)来清理处理视图的问题。例如，代替(取自项目文档的代码)：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3634099|class+AndroidWay+extends+Activity+{+
TextView+name;+
ImageView+thumbnail;+
LocationManager+loc;+
Drawable+icon;+
String+myName;+

public+void+onCreate(Bundle+savedInstanceState)+{+
++++super.onCreate(savedInstanceState);+
++++setContentView(R.layout.main);
++++name++++++=+(TextView)+findViewById(R.id.name);+
++++thumbnail+=+(ImageView)+findViewById(R.id.thumbnail);+
++++loc+++++++=+(LocationManager)+getSystemService(Activity.LOCATION_SERVICE);+
++++icon++++++=+getResources().getDrawable(R.drawable.icon);+
++++myName++++=+getString(R.string.app_name);+
++++name.setText(+"Hello,+"+%2B+myName+);+
}}+|code-block|syntax|javascript|3634100|您可以使用更简单和更简短的版本：|3634101|class+RoboWay+extends+RoboActivity+{+
@InjectView(R.id.name)+++++++++++++TextView+name;+
@InjectView(R.id.thumbnail)++++++++ImageView+thumbnail;+
@InjectResource(R.drawable.icon)+++Drawable+icon;+
@InjectResource(R.string.app_name)+String+myName;+
@Inject++++++++++++++++++++++++++++LocationManager+loc;+

public+void+onCreate(Bundle+savedInstanceState)+{+
++++super.onCreate(savedInstanceState);+
++++setContentView(R.layout.main);
++++name.setText(+"Hello,+"+%2B+myName+);+
}+}+|3634102|这不仅有助于保持视图管理的整洁和到位，而且在测试时也非常有用。|3634103|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/roboguice/^0|16|9|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|C|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

As said before, R file is (or should be) re-generated automatically on every build. You should try some dependency-injection framework (<a href="http://code.google.com/p/roboguice/" rel="nofollow">Roboguice</a> works well for Android programming) to clean up issues with handling Views. For example instead of (code taken from project's documentation):

<pre><code>class AndroidWay extends Activity { 
TextView name; 
ImageView thumbnail; 
LocationManager loc; 
Drawable icon; 
String myName; 

public void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.main);
 name = (TextView) findViewById(R.id.name); 
 thumbnail = (ImageView) findViewById(R.id.thumbnail); 
 loc = (LocationManager) getSystemService(Activity.LOCATION_SERVICE); 
 icon = getResources().getDrawable(R.drawable.icon); 
 myName = getString(R.string.app_name); 
 name.setText( "Hello, " + myName ); 
}} 
</code></pre>

You can use simpler and shorter version: 

<pre><code>class RoboWay extends RoboActivity { 
@InjectView(R.id.name) TextView name; 
@InjectView(R.id.thumbnail) ImageView thumbnail; 
@InjectResource(R.drawable.icon) Drawable icon; 
@InjectResource(R.string.app_name) String myName; 
@Inject LocationManager loc; 

public void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.main);
 name.setText( "Hello, " + myName ); 
} } 
</code></pre>

This not only helps keeping your Views management clean and in-place but is also very helpful when it comes to testing.

blocks|key|5247743|text|即使你确实尝试过这种方法，你也必须使用反射来获得"findViewbyID“，因为(R.id.numberPadi)现在可以在没有反射的情况下工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5247744|也不要使用反射，尽管它会整洁你的代码，但它非常慢。|5247745|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|$]]

Even if you did try that approach you will have to use Reflection in order to obtain "findViewbyID" as (R.id.numberPad[i]) will now work without Reflection.

Dont use Reflection either, although it will neaten your code it is very slow.

blocks|key|3634169|text|您知道，您可以在R.java文件之外实现所有这些，也可以在自己的类中实现-只需静态导入R.id.*即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3634170|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 know, you can implement all that outside the R.java file and in your own classes - just do a static import of R.id.*.

blocks|key|28515|text|R.java是系统生成的文件，它是自动生成的。您不应尝试手动编辑它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|28516|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|$]]

R.java is a system generated file which iautomatically generated. You should not try to edit it manually.

So I'm programming a simple calculator in Eclipse for Android 4.0 and I'm trying to stream-line my code and make it as simple as possible. The place I'm trying to clean up is my findViewById()'s. Since I have buttons 0-9 to instantiate I have a block of code ten lines long that look like this:

<pre><code>b0 = (Button) findViewById(R.id.b0);
b1 = (Button) findViewById(R.id.b1);
...
b9 = (Button) findViewById(R.id.b9);
</code></pre>

As you can see this thing is just begging for a for-loop. So what I wanted to do was make two arrays. One instance variable array in the Activity which holds all the Button instance variables for the number pad:

<pre><code>private Button[] numberPad = {b0,b1,b2,b3,b4,b5,b6,b7,b8,b9};
</code></pre>

and then another array in the id class in the R.java file that holds all the button id variables that would look like this:

<pre><code>private static final int[] numberPad = {b0,b1,b2,b3,b4,b5,b6,b7,b8,b9};
</code></pre>

Sooo that I can reduce ten lines of Button instantiations to two using this loop:

<pre><code>for(int i = 0; i &lt; numberPad.length; i++)
 numberPad[i] = (Button) findViewById(R.id.numberPad[i]);
</code></pre>

When I type it out it's fine, but when I go to save it it reverts back automatically to it's original form. I don't see anything wrong with this code. It doesn't produce any errors as far as I can tell. Why can't I edit the R.java file in this way? Is there a way to? Should I?

Can/should I edit the R.java file. If so, how?

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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因此，我正在为Android 4.0在Eclipse中编写一个简单的计算器，并尝试将我的代码流水线化，使其尽可能简单。我要清理的地方是我的findViewById()，因为我有按钮0-9来实例化，所以我有一个十行长的代码块，看起来像这样：b0 = (Button) findViewById(R.id.b0);b1 = ...

问我可以/应该编辑R.java文件吗？如果是这样的话，是怎么做的？
EN

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问我可以/应该编辑R.java文件吗？如果是这样的话，是怎么做的？EN