lineChart = (LineChart) findViewById(R.id.lineChart);


        ArrayList<Entry> entries = new ArrayList<>();
        entries.add(new Entry(4f, 0));
        entries.add(new Entry(8f, 1));
        entries.add(new Entry(6f, 2));
        entries.add(new Entry(2f, 3));
        entries.add(new Entry(18f, 4));
        entries.add(new Entry(9f, 5));

        LineDataSet dataset = new LineDataSet(entries, "# of Calls");

        ArrayList<String> labels = new ArrayList<String>();
        labels.add("January");
        labels.add("February");
        labels.add("March");
        labels.add("April");
        labels.add("May");
        labels.add("June");

        LineData data = new LineData(labels, dataset);
        dataset.setColors(ColorTemplate.COLORFUL_COLORS); //
        dataset.setDrawCubic(true);
        dataset.setDrawFilled(true);

        lineChart.setData(data);
        lineChart.animateY(5000);



------------------- gradle build -----------------------------


repositories {
    maven { url "https://jitpack.io" }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.github.PhilJay:MPAndroidChart:v2.1.6'
}