Squashed commit of the following:

commit 01acef10132802b22e104c411122c2790673afdc
Author: Ralf Kistner <[email protected]>
Date:   Sun Mar 12 13:08:09 2017 +0200

    Try again.

commit 4c0605282d13df59c856fd64945d096d5789f227
Author: Ralf Kistner <[email protected]>
Date:   Sun Mar 12 13:01:58 2017 +0200

    Show lint output on build failure.

commit e9af0670c8b2e07a4bd2418042b0487e97fb9389
Author: Ralf Kistner <[email protected]>
Date:   Sun Mar 12 12:50:11 2017 +0200

    Handle missing local.properties file.

commit e3976102e7342d3008c7b88cb3f75397397e3d95
Author: Ralf Kistner <[email protected]>
Date:   Sun Mar 12 12:36:47 2017 +0200

    Update SDK components installed on Travis.

commit e50952cc89cc83720e146838debf6a22bb1d9c2a
Author: Ralf Kistner <[email protected]>
Date:   Sun Mar 12 12:28:18 2017 +0200

    More tool upgrades.

     * Gradle 3.4.1
     * Android Gra dle plugin 2.3.0
     * Remove android-sdk-manager (no longer required).
     * Ignore lint for translation issues in sample apps.

Author: rkistner

.travis.yml

@@ -2,16 +2,23 @@ language: android
 jdk: oraclejdk8
 android:
   components:
+    # Install tools twice to get the latest update
+    - tools
+    - tools
+    - platform-tools
+    - build-tools-25.0.2
+
+    - android-25
+
     - extra-android-support
     - extra-android-m2repository
     - extra-google-m2repository
-    # We need "tools" for build-tools. See https://github.com/travis-ci/travis-ci/issues/5036
-    - tools
-    - build-tools-23.0.2
   licenses:
     - 'android-sdk-license-.+'
     - 'google-gdk-license-.+'
 script:
     # build includes lint and test
     - TERM=dumb ./gradlew build
 
+after_failure:
+    - cat **/build/reports/lint-results.xml

build.gradle

@@ -5,8 +5,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
-        classpath 'com.github.JakeWharton:sdk-manager-plugin:220bf7a88a7072df3ed16dc8466fb144f2817070'
+        classpath 'com.android.tools.build:gradle:2.3.0'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.0'
     }
 }
@@ -19,7 +18,6 @@ subprojects {
 
     version = '3.4.0'
     group = 'com.journeyapps'
-    apply plugin: 'android-sdk-manager'
 
     ext.androidBuildTools = '25.0.2'
     ext.androidTargetSdk = 25

gradle.properties

@@ -0,0 +1 @@
+org.gradle.jvmargs=-Xmx1536M

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
-#Sun Sep 04 18:48:05 CEST 2016
+#Sun Mar 12 11:50:08 SAST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-all.zip

gradle/wrapper/gradle-wrapper.properties

@@ -6,12 +6,30 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`

gradlew

@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

gradlew.bat

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources>
+<resources tools:ignore="MissingTranslation" xmlns:tools="http://schemas.android.com/tools">
 
     <string name="app_name">ZXing Sample</string>
     <string name="scan_barcode">Scan Barcode</string>

sample-nosupport/src/main/res/values/strings.xml

@@ -11,12 +11,21 @@ android {
         versionName "3.4.0"
     }
 
-    Properties properties = new Properties()
-    properties.load(project.rootProject.file('local.properties').newDataInputStream())
-    def keystoreFile = properties.getProperty('keystore.file')
-    def keystorePassword = properties.getProperty('keystore.password')
-    def keystoreAlias = properties.getProperty('keystore.alias')
-    def validConfig = keystoreFile != null && keystorePassword != null && keystoreAlias != null;
+    def validConfig
+    def keystoreFile
+    def keystorePassword
+    def keystoreAlias
+
+    try {
+        Properties properties = new Properties()
+        properties.load(project.rootProject.file('local.properties').newDataInputStream())
+        keystoreFile = properties.getProperty('keystore.file')
+        keystorePassword = properties.getProperty('keystore.password')
+        keystoreAlias = properties.getProperty('keystore.alias')
+        validConfig = keystoreFile != null && keystorePassword != null && keystoreAlias != null;
+    } catch(error) {
+        validConfig = false;
+    }
 
     if(validConfig) {
         System.out.println("Release signing configured with " + keystoreFile)

sample/build.gradle

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources>
+<resources tools:ignore="MissingTranslation" xmlns:tools="http://schemas.android.com/tools">
 
     <string name="app_name">ZXing Sample</string>
     <string name="scan_barcode">Scan Barcode</string>