Id	StringFormatMatches
Summary	String.format string doesn't match the XML format string
Severity	Error
Category	Correctness: Messages
Platform	Android
Vendor	Android Open Source Project
Feedback	https://issuetracker.google.com/issues/new?component=192708
Since	Initial
Affects	Kotlin and Java files and resource files
Editing	This check runs on the fly in the IDE editor
Implementation	Source Code
Tests	Source Code
Copyright Year	2011

Here is an example of lint warnings produced by this check:

src/StringFormatMatches.java:6:Error: Wrong argument type for formatting
argument '#1' in score: conversion is 'd', received boolean (argument #2
in method call) (Did you mean formatting character b?)
[StringFormatMatches]
    String output4 = String.format(score, true);  // wrong
                                          ----

Here are the relevant source files:

res/values/formatstrings.xml:

<resources>
    <string name="score">Score: %1$d</string>
</resources>

src/StringFormatMatches.java:

import android.app.Activity;

public class StringFormatMatches extends Activity {
    public void test() {
        String score = getString(R.string.score);
        String output4 = String.format(score, true);  // wrong
    }
}

You can also visit the source code for the unit tests for this check to see additional scenarios.

You can suppress false positives using one of the following mechanisms:

• Using a suppression annotation like this on the enclosing element:

  // Kotlin
  @Suppress("StringFormatMatches")
  fun method() {
     format(...)
  }

  or

  // Java
  @SuppressWarnings("StringFormatMatches")
  void method() {
     format(...);
  }

• Using a suppression comment like this on the line above:

  //noinspection StringFormatMatches
  problematicStatement()

• Using a special lint.xml file in the source tree which turns off the check in that folder and any sub folder. A simple file might look like this:

  <?xml version="1.0" encoding="UTF-8"?>
  <lint>
      <issue id="StringFormatMatches" severity="ignore" />
  </lint>

  Instead of ignore you can also change the severity here, for example from error to warning. You can find additional documentation on how to filter issues by path, regular expression and so on here.

• In Gradle projects, using the DSL syntax to configure lint. For example, you can use something like

  lintOptions {
      disable 'StringFormatMatches'
  }

  In Android projects this should be nested inside an android { } block.

• For manual invocations of lint, using the --ignore flag:

  $ lint --ignore StringFormatMatches ...`

• Last, but not least, using baselines, as discussed here.