I am working on a libGDX project for Android. Since I added the following code, running the game on my Android phone produces an exception:

final FreeTypeFontGenerator generator = new FreeTypeFontGenerator(fontFile);
final FreeTypeFontParameter parameter = new FreeTypeFontParameter();
parameter.size = 36;
this.font = generator.generateFont(parameter); // line 43
generator.dispose();

I am using libGDX version 1.7.0. Here is the gradle.build:

buildscript {
    repositories {
        mavenCentral()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
        jcenter()
    }
    dependencies {
        classpath 'de.richsource.gradle.plugins:gwt-gradle-plugin:0.6'
        classpath 'com.android.tools.build:gradle:1.2.3'
        classpath 'org.robovm:robovm-gradle-plugin:1.8.0'
    }
}

allprojects {
    apply plugin: "eclipse"
    apply plugin: "idea"

    version = '1.0'
    ext {
        appName = "unicorn"
        gdxVersion = '1.7.0'
        roboVMVersion = '1.8.0'
        box2DLightsVersion = '1.4'
        ashleyVersion = '1.6.0'
        aiVersion = '1.6.0'
    }

    repositories {
        mavenCentral()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
        maven { url "https://oss.sonatype.org/content/repositories/releases/" }
    }
}

project(":desktop") {
    apply plugin: "java"


    dependencies {
        compile project(":core")
        compile "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-desktop"
    }
}

project(":android") {
    apply plugin: "android"

    configurations { natives }

    dependencies {
        compile project(":core")
        compile "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi-v7a"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86"
        compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
        natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-armeabi"
        natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-armeabi-v7a"
        natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-x86"
        compile "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
        natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-armeabi"
        natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-armeabi-v7a"
        natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-x86"
    }
}

project(":core") {
    apply plugin: "java"


    dependencies {
        compile "com.badlogicgames.gdx:gdx:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"

        compile 'org.apache.commons:commons-lang3:3.4'
        compile 'org.projectlombok:lombok:1.16.4'

    }
}

And the Exception:

F/art     (20518): art/runtime/check_jni.cc:64] JNI DETECTED ERROR IN APPLICATION: capacity must be greater than 0: 0
F/art     (20518): art/runtime/check_jni.cc:64]     in call to NewDirectByteBuffer
F/art     (20518): art/runtime/check_jni.cc:64]     from java.nio.ByteBuffer com.badlogic.gdx.graphics.g2d.Gdx2DPixmap.newPixmap(long[], int, int, int)
F/art     (20518): art/runtime/check_jni.cc:64] "GLThread 1777" prio=5 tid=14 Runnable
F/art     (20518): art/runtime/check_jni.cc:64]   | group="main" sCount=0 dsCount=0 obj=0x64d26b40 self=0x48e27b48
F/art     (20518): art/runtime/check_jni.cc:64]   | sysTid=20548 nice=0 cgrp=apps sched=0/0 handle=0x48e27e98
F/art     (20518): art/runtime/check_jni.cc:64]   | state=R schedstat=( 0 0 0 ) utm=7 stm=3 core=1 HZ=100
F/art     (20518): art/runtime/check_jni.cc:64]   | stack=0x48e41000-0x48e45000 stackSize=1040KB
F/art     (20518): art/runtime/check_jni.cc:64]   native: art::Thread::DumpStack(std::ostream&) const+87 [0x416f7cc8] (libart.so)
F/art     (20518): art/runtime/check_jni.cc:64]   native: ??? [0x415a49ae] (libart.so)
F/art     (20518): art/runtime/check_jni.cc:64]   native: art::JniAbortF(char const*, char const*, ...)+51 [0x415a5340] (libart.so)
F/art     (20518): art/runtime/check_jni.cc:64]   native: ??? [0x415b05f4] (libart.so)
F/art     (20518): art/runtime/check_jni.cc:64]   native: Java_com_badlogic_gdx_graphics_g2d_Gdx2DPixmap_newPixmap+92 [0x48def790] (libgdx.so)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.graphics.g2d.Gdx2DPixmap.newPixmap(Native method)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.graphics.g2d.Gdx2DPixmap.<init>(Gdx2DPixmap.java:94)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.graphics.Pixmap.<init>(Pixmap.java:114)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.graphics.g2d.freetype.FreeType$Bitmap.getPixmap(FreeType.java:613)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.createGlyph(FreeTypeFontGenerator.java:475)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.generateData(FreeTypeFontGenerator.java:402)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.generateFont(FreeTypeFontGenerator.java:163)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.generateFont(FreeTypeFontGenerator.java:156)
F/art     (20518): art/runtime/check_jni.cc:64]   at org.tobinet.unicorn.Unicorn.create(Unicorn.java:43)
F/art     (20518): art/runtime/check_jni.cc:64]   at com.badlogic.gdx.backends.android.AndroidGraphics.onSurfaceChanged(AndroidGraphics.java:243)
F/art     (20518): art/runtime/check_jni.cc:64]   at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1514)
F/art     (20518): art/runtime/check_jni.cc:64]   at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1242)

What can I do to fix this?