Maven fails to build Android project (not using Eclipse)

Question

When I try build a current Android project with Maven (mvn package), I am getting this error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project gs-maven-tabs: Compilation failure: Compilation failure:
[ERROR] /home/kleber/workspace/basic_tab/src/main/java/org/hello/HelloActivity.java:[5,29] error: cannot find symbol
[ERROR] symbol:   class FragmentTabHost
[ERROR] location: package android.support.v4.app
[ERROR] /home/kleber/workspace/basic_tab/src/main/java/org/hello/HelloActivity.java:[9,12] error: cannot find symbol
[ERROR] symbol:   class FragmentTabHost
[ERROR] location: class HelloActivity
[ERROR] /home/kleber/workspace/basic_tab/src/main/java/org/hello/HelloActivity.java:[16,20] error: cannot find symbol
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

related to this class:

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTabHost;

public class HelloActivity extends FragmentActivity {
    // Fragment TabHost as mTabHost
    private FragmentTabHost mTabHost;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.hello_layout);

        mTabHost = (TabHost)findViewById(android.R.id.tabhost);
        mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);

        mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("Tab1"), Tab1Fragment.class, null);
        mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("Tab2"), Tab2Fragment.class, null);
        mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("Tab3"), Tab3Fragment.class, null);
    }
}

this error happens even I add this to my pom.xml:

    <dependency>
        <groupId>com.google.android</groupId>
        <artifactId>support-v4</artifactId>
        <version>r6</version>
    </dependency>

What I missing here?

ps.: my full pom.xml is this:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.hello</groupId>
    <artifactId>gs-maven-tabs</artifactId>
    <version>0.1.0</version>
    <packaging>apk</packaging>

    <properties>
        <!-- use UTF-8 for everything -->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <android.sdk.path>/home/kleber/android-sdk-linux/</android.sdk.path>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.google.android</groupId>
            <artifactId>android</artifactId>
            <version>4.1.1.4</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.google.android</groupId>
            <artifactId>support-v4</artifactId>
            <version>r6</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>com.jayway.maven.plugins.android.generation2</groupId>
                <artifactId>android-maven-plugin</artifactId>
                <version>3.9.0-rc.1</version>
                <configuration>
                    <sdk>
                        <platform>19</platform>
                    </sdk>
                    <deleteConflictingFiles>true</deleteConflictingFiles>
                    <undeployBeforeDeploy>true</undeployBeforeDeploy>
                </configuration>
                <extensions>true</extensions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <showDeprecation>true</showDeprecation>
                    <showWarnings>true</showWarnings>
                    <executable>/home/kleber/jdk1.7.0_55/bin/javac</executable>
                    <fork>true</fork>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

Answer 1

After a quick check in the jar , FragmentTabHost class is not in that library!

That is the main problem with maintaining two builds, IDE and CLI, after a few updates most of the time they are not the same.

You can find the most updated jars in the sdk extras... if they are not there download them via the SDK manager.

${SDK_HOME}/extras/android/m2repository/com/android/support/support-v4/21.0.0/support-v4-21.0.0.aar

Extract it and take the classes.jar (or convert it to apklib) from it and replace it with your r6 repository file, or install it as a new jar:

mvn install:install-file -Dfile=<path-to-file> -DgroupId=com.google.android \
-DartifactId=support-v4 -Dversion=21.0.0 -Dpackaging=jar



<dependency>
    <groupId>com.google.android</groupId>
    <artifactId>support-v4</artifactId>
    <version>21.0.0</version>
</dependency>