blocks|key|4330825|text|strings.xml文件：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4330826|<string+name="firststring">Hello+World</string>
<string+name="secondtring">Welcome</string>|code-block|syntax|javascript|4330827|活动或片段：|4330828|textView.setText(i+<+1+?+getResources().getString(R.string.firststring)+:+getResources().getString(R.string.secondtring));|4330829|entityMap^0|0|B|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

<code>strings.xml</code> File:

<pre><code>&lt;string name="firststring"&gt;Hello World&lt;/string&gt;
&lt;string name="secondtring"&gt;Welcome&lt;/string&gt;
</code></pre>

Activity or Fragment:

<pre><code>textView.setText(i &lt; 1 ? getResources().getString(R.string.firststring) : getResources().getString(R.string.secondtring));
</code></pre>

blocks|key|4331289|text|首先，我想澄清字符串资源的概念以及它们是如何使用的。对于常量字符串值(在本例中为“Ja”和"Nein“)，您可以在res/values文件夹中名为strings.xml的文件中定义这些值。举个例子：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4331290|<?xml+version="1.0"+encoding="utf-8"?>
<resources>
++++<string+name="antwort_ja">Ja</string>
++++<string+name="antwort_nein">Nein</string>
</resources>|code-block|syntax|javascript|4331291|这些值是在编译时最终确定的，因此可以在整个应用程序中用作常量。对于XML布局文件，是的，您可以使用@string/前缀引用这些字符串资源。然而，在Java代码中，您只能使用带有R.string前缀的getString()方法来引用这些值。因为这些R.string值是final，所以它们不能在运行时更改，因此您会得到错误。在你的例子中，你的代码应该是：|4331292|//+I'm+assuming+you+have+this+declared+in+onCreate()
TextView+myTextView+=+(TextView)findViewById(R.id.mytextview);+

if+(i+<+1)+{
++++myTextView.setText(getString(R.string.antwort_ja));
}+else+{
++++myTextView.setText(getString(R.string.antwort_nein));
}|4331293|这也假设你是从你的活动中调用它的。如果不是，则可能需要从context.getString(R.string.antwort_ja);等Context实例中调用它|4331294|entityMap^0|1L|A|21|B|0|0|1D|8|2G|8|2R|B|3F|8|3P|5|0|0|S|13|1W|7|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]|$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|19|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1A|8|@$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|R|$]]

Firstly I'd just like to clarify the concept of String Resources and how they are used. For constant String values ("Ja" and "Nein" in your case), you can define these values in a file called <code>strings.xml</code>, located within the <code>res/values</code> folder. As an example:

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;resources&gt;
 &lt;string name="antwort_ja"&gt;Ja&lt;/string&gt;
 &lt;string name="antwort_nein"&gt;Nein&lt;/string&gt;
&lt;/resources&gt;
</code></pre>

These values are finalized at compile time so can be used as constants throughout your app. In the case of XML layout files, yes you can refer to these String resources using the <code>@string/</code> prefix. However, in your Java code you can only refer to these values using the <code>getString()</code> method using the <code>R.string</code> prefix. Because these <code>R.string</code> values are <code>final</code>, they cannot be changed at runtime, thus the error you're getting. In your case your code would be:

<pre><code>// I'm assuming you have this declared in onCreate()
TextView myTextView = (TextView)findViewById(R.id.mytextview); 

if (i &lt; 1) {
 myTextView.setText(getString(R.string.antwort_ja));
} else {
 myTextView.setText(getString(R.string.antwort_nein));
}
</code></pre>

This also makes the assumption that you're calling this from your Activity. If not, you may need to call it from an instance of <code>Context</code> e.g. <code>context.getString(R.string.antwort_ja);</code>

blocks|key|4330927|text|首先声明您的TextView变量|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4330928|private+TextView+mTextView;|code-block|syntax|javascript|4330929|在onCreate中|4330930|mTextView++=+(TextView)+findViewById(R.id.mytextview);|4330931|在此之后，您可以使用它|4330932|if(i+<+1)+
++++System.out.println("Ja");
+else
++++System.out.println("Nein");|4330933|可以使用您的TextView完成以下操作|4330934|if(i+<+1)+
+++mTextView.setText(getString(R.String.myJaText);
+else
++++mTextView.setText(getString(R.String.myNeinText);|4330935|在Strings.xml中，您可以编写要在文本字段中使用的文本。|4330936|您可以在Res+-+Values中找到Strings.xml|offset|length|style|CODE|4330937|<string+name="myJaText">Ja</string>
<string+name="myNeinText">Nein</string>|4330938|entityMap^0|0|0|0|0|0|0|0|0|0|4|C|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|16|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|18|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|19|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|1A|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1B|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|1C|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1D|8|@$W|1E|X|1F|Y|Z]]|9|@]|A|$]]|$1|10|3|11|5|D|7|1G|8|@]|9|@]|A|$E|F]]|$1|12|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|13|$]]

First declare your TextView Variable

<pre><code>private TextView mTextView;
</code></pre>

in onCreate

<pre><code>mTextView = (TextView) findViewById(R.id.mytextview);
</code></pre>

after that you can work with it

<pre><code>if(i &lt; 1) 
 System.out.println("Ja");
 else
 System.out.println("Nein");
</code></pre>

Can be done with your TextView as below

<pre><code>if(i &lt; 1) 
 mTextView.setText(getString(R.String.myJaText);
 else
 mTextView.setText(getString(R.String.myNeinText);
</code></pre>

In Strings.xml you can write the text you are going to use in your textfield.

You can find Strings.xml into <code>Res - Values</code>:

<pre><code>&lt;string name="myJaText"&gt;Ja&lt;/string&gt;
&lt;string name="myNeinText"&gt;Nein&lt;/string&gt;
</code></pre>

I am very new to Android programming!

I want to do something really simple:

<pre><code>if(i &lt; 1) 
 System.out.println("Ja");
 else
 System.out.println("Nein");
</code></pre>

My first idea how to achieve this was to have a TextView in xml with a String resource:

<pre><code>&lt;TextView
android:id="@+id/mytextview"
android:text="@string/Entscheidung"
android:layout_width="match_parent"
android:layout_height="match_parent" /&gt;
</code></pre>

and then acess that resource via Java code:

<pre><code>R.string.Entscheidung = "Ja";
</code></pre>

but it doesnt work: Error:(13, 17) error: cannot assign a value to final variable Entscheidung

Is there another way to do this? 

Thank you !

Android App: How can I print out a String with java code?

我对Android编程非常陌生！我想做一些非常简单的事情：if(i < 1) System.out.println("Ja"); else System.out.println("Nein");要实现这一点，我的第一个想法是在xml中创建一个带有字符串资源的TextView：<TextViewandroi...

问Android App:如何使用java代码打印字符串？
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