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logback-android brings the power of logback to Android. This library provides a highly configurable logging framework for Android apps, supporting multiple log destinations simultaneously:

  • files
  • SQLite databases
  • logcat
  • sockets
  • syslog
  • email

Runs on Android 2.3 (SDK 9) or higher. See Wiki for documentation.

For v1.x, see the 1.x branch.

Quick Start

  1. Create a new “Basic Activity” app in Android Studio.

  2. In app/build.gradle, add the following dependencies:

    dependencies {
      compile 'org.slf4j:slf4j-api:1.7.25'
      compile 'com.github.tony19:logback-android:2.0.0'
  3. Create app/src/main/assets/logback.xml containing:

      <appender name="logcat" class="ch.qos.logback.classic.android.LogcatAppender">
          <pattern>[%-20thread] %msg</pattern>
      <root level="DEBUG">
        <appender-ref ref="logcat" />
  4. In MainActivity.java, add the following imports:

    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
  5. …and modify onOptionsItemSelected() to log “hello world”:

    public boolean onOptionsItemSelected(MenuItem item) {
        Logger log = LoggerFactory.getLogger(MainActivity.class);
        log.info("hello world");
        // ...
  6. Build and start the app.

  7. Open logcat for your device (via the Android Monitor tab in Android Studio).

  8. Click the app menu, and select the menu-option. You should see “hello world” in logcat.


Gradle release

dependencies {
  compile 'org.slf4j:slf4j-api:1.7.25'
  compile 'com.github.tony19:logback-android:2.0.0'

Gradle snapshot (unstable)

repositories {
  maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }

dependencies {
  compile 'org.slf4j:slf4j-api:1.7.25'
  compile 'com.github.tony19:logback-android:2.0.1-SNAPSHOT'


Use these commands to create the AAR:

git clone git://github.com/tony19/logback-android.git
cd logback-android

The file is output to: ./build/logback-android-2.0.0-debug.aar