格式和样式

是的，请参阅下面的字符串资源:格式和样式

If you need to format your strings using String.format(String, Object...), then you can do so by putting your format arguments in the string resource. For example, with the following resource: <string name="welcome_messages">Hello, %1$s! You have %2$d new messages.</string> In this example, the format string has two arguments: %1$s is a string and %2$d is a decimal number. You can format the string with arguments from your application like this: Resources res = getResources(); String text = String.format(res.getString(R.string.welcome_messages), username, mailCount);

基本用法

注意，getString有一个重载，它使用字符串作为格式化字符串:

String text = res.getString(R.string.welcome_messages, username, mailCount);

复数

如果你需要处理复数，使用这个:

<plurals name="welcome_messages">
    <item quantity="one">Hello, %1$s! You have a new message.</item>
    <item quantity="other">Hello, %1$s! You have %2$d new messages.</item>
</plurals>

第一个mailCount参数是用来决定使用哪种格式(单复数)，其他参数是你的替换:

Resources res = getResources();
String text = res.getQuantityString(R.plurals.welcome_messages, mailCount, username, mailCount);

有关更多细节，请参阅字符串资源:复数。

Kotlin版本的公认答案…

val res = resources
val text = String.format(res.getString(R.string.welcome_messages), username, mailCount)

在Kotlin中，你只需要像这样设置你的字符串值:

<string name="song_number_and_title">"%1$d ~ %2$s"</string>

在你的布局上创建一个文本视图:

<TextView android:text="@string/song_number_and_title"/>

如果你使用Anko，那么在你的代码中这样做:

val song = database.use { // get your song from the database }
song_number_and_title.setText(resources.getString(R.string.song_number_and_title, song.number, song.title))  

您可能需要从应用程序上下文中获取资源。

你可以使用MessageFormat:

<string name="customer_address">Wellcome: {0} {1}</string>

在Java代码中:

String text = MessageFormat(R.string.customer_address).format("Name","Family");

火力等级1:

https://developer.android.com/reference/java/text/MessageFormat.html

如果你想写百分比(%)，复制它:

<string name="percent">%1$d%%</string>

label.text = getString(R.string.percent, 75) // Output: 75%.

如果你只写%1$d%，你会得到一个错误:格式字符串'percent'不是一个有效的格式字符串，所以它不应该被传递给string . Format。

或者使用格式化=false"代替。

补充回答

当我第一次在接受的答案中看到%1$s和%2$d时，它毫无意义。这里有更多的解释。

它们被称为格式说明符。在xml字符串中，它们的形式是

%[parameter_index$][format_type] 

%: The percent sign marks the beginning of the format specifier. parameter index: This is a number followed by a dollar sign. If you had three parameters that you wanted to insert into the string, then they would be called 1$, 2$, and 3$. The order you place them in the resource string doesn't matter, only the order that you supply the parameters. format type: There are a lot of ways that you can format things (see the documentation). Here are some common ones: s string d decimal integer f floating point number

例子

我们将创建以下格式化字符串，其中灰色部分以编程方式插入。

我妹妹玛丽12岁了。

string.xml

<string name="my_xml_string">My sister %1$s is %2$d years old.</string>

MyActivity.java

String myString = "Mary";
int myInt = 12;
String formatted = getString(R.string.my_xml_string, myString, myInt);

笔记

I could use getString because I was in an Activity. You can use context.getResources().getString(...) if it is not available. String.format() will also format a String. The 1$ and 2$ terms don't need to be used in that order. That is, 2$ can come before 1$. This is useful when internationalizing an app for languages that use a different word order. You can use a format specifier like %1$s multiple times in the xml if you want to repeat it. Use %% to get the actual % character. For more details read the following helpful tutorial: Android SDK Quick Tip: Formatting Resource Strings