Detailed Explanation of String Formatting in Java & Android

%1$s %1$d Android string (java & Android formatting string)

1$s // String
%1$d // int

//R.string.old:
<string name="old">I am%1$d years old</string>

String sAgeFormat = getResources().getString(R.string.old);
String sFinalAge = String.format(sAgeFormat, 23);

1, integer type, such as “I am23years old”, this23is an integer type. In string.xml, it can be written as, <string name="old">I am%1$d years old</string>　

In the program, use

String sAgeFormat = getResources().getString(R.string.old);　
String sFinalAge = String.format(sAgeFormat, 23);　

Replace%1$d is replaced with23;　

　%1$d means the replacement of the first integer in the entire name="old". If there are two integer contents to be replaced in a name, the second one is written as:%2$d, etc.; see the following string type for specific program replacement;　

　2, string type, such as "My name is Li Si, I come from the capital Beijing"; both "Li Si" and "Capital Beijing" need to be replaced.　　

In string.xml, it can be written as, <string name="alert">My name is%1$s, I come from%2$s</string>　　

In the program:　

　String sAgeFormatString sAgeFormat1= getResources().getString(R.string.alert);　　　　
　String sFinal1 = String.format(sAgeFormat1, "Li Si", "Capital Beijing");　　

Here, the two strings to be replaced correspond in order according to the above program.

Introduction to <xliff:g> tag:

The attribute id can be named arbitrarily
Example of attribute value explanation
%n$ms: Represents a string, n represents the nth parameter, setting the value of m can place a space before the output
%n$md: Represents an integer, n represents the nth parameter, setting the value of m can place a space before the output, or can be set to 0m, placing m zeros before the output
%n$mf: Represents a floating-point number, n represents the nth parameter, setting the value of m can control the number of decimal places, such as m=2.2The output format is 00.00 when

It can also be written simply as:

%d　　（Represents an integer）

%f　　　（Represents a floating-point number）

%s　　（Represents a string）

Example of usage steps:

<?xml version="1.0" encoding="utf-8"?>

　<string name="test_xliff">Xiao Hong this year<xliff:g id="xxx">%d</xliff:g></string>/xliff:g>years old, went to school at<xliff:g id="yyy">%s</xliff:g>/xliff:g>grade!</xliff:g>/string>

String test = String.format(getResources().getString(R.string.test_xliff), 7, "Second Grade小学");

Output:

Xiao Hong this year7is in second grade of elementary school!

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