Program: 18531
Project: 18531
Buggy source:
@Override protected void onCreate(Bundle savedInstanceState){
  super.onCreate(savedInstanceState);
  getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
  setContentView(R.layout.activity_barchart);
  tvX=(TextView)findViewById(R.id.tvXMax);
  tvY=(TextView)findViewById(R.id.tvYMax);
  mSeekBarX=(SeekBar)findViewById(R.id.seekBar1);
  mSeekBarY=(SeekBar)findViewById(R.id.seekBar2);
  mChart=(BarChart)findViewById(R.id.chart1);
  mChart.setOnChartValueSelectedListener(this);
  mChart.setDrawBarShadow(true);
  mChart.setDrawValueAboveBar(true);
  mChart.setDescription("String_Node_Str");
  mChart.setMaxVisibleValueCount(60);
  mChart.setPinchZoom(false);
  mChart.setDrawGridBackground(false);
  mTf=Typeface.createFromAsset(getAssets(),"String_Node_Str");
  XAxis xAxis=mChart.getXAxis();
  xAxis.setPosition(XAxisPosition.BOTTOM);
  xAxis.setTypeface(mTf);
  xAxis.setDrawGridLines(false);
  xAxis.setSpaceBetweenLabels(2);
  ValueFormatter custom=new MyValueFormatter();
  YAxis leftAxis=mChart.getAxisLeft();
  leftAxis.setTypeface(mTf);
  leftAxis.setLabelCount(8);
  leftAxis.setValueFormatter(custom);
  leftAxis.setPosition(YAxisLabelPosition.OUTSIDE_CHART);
  YAxis rightAxis=mChart.getAxisRight();
  rightAxis.setDrawGridLines(false);
  rightAxis.setTypeface(mTf);
  rightAxis.setLabelCount(8);
  rightAxis.setValueFormatter(custom);
  setData(12,50);
  mSeekBarY.setProgress(50);
  mSeekBarX.setProgress(12);
  mSeekBarY.setOnSeekBarChangeListener(this);
  mSeekBarX.setOnSeekBarChangeListener(this);
  Legend l=mChart.getLegend();
  l.setPosition(LegendPosition.BELOW_CHART_LEFT);
  l.setForm(LegendForm.SQUARE);
  l.setFormSize(9f);
  l.setTextSize(11f);
  l.setXEntrySpace(4f);
}

Fixed version (ground truth):
@Override protected void onCreate(Bundle savedInstanceState){
  super.onCreate(savedInstanceState);
  getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
  setContentView(R.layout.activity_barchart);
  tvX=(TextView)findViewById(R.id.tvXMax);
  tvY=(TextView)findViewById(R.id.tvYMax);
  mSeekBarX=(SeekBar)findViewById(R.id.seekBar1);
  mSeekBarY=(SeekBar)findViewById(R.id.seekBar2);
  mChart=(BarChart)findViewById(R.id.chart1);
  mChart.setOnChartValueSelectedListener(this);
  mChart.setDrawBarShadow(true);
  mChart.setDrawValueAboveBar(true);
  mChart.setDescription("String_Node_Str");
  mChart.setMaxVisibleValueCount(60);
  mChart.setPinchZoom(false);
  mChart.setDrawGridBackground(false);
  mTf=Typeface.createFromAsset(getAssets(),"String_Node_Str");
  XAxis xAxis=mChart.getXAxis();
  xAxis.setPosition(XAxisPosition.BOTTOM);
  xAxis.setTypeface(mTf);
  xAxis.setDrawGridLines(false);
  xAxis.setSpaceBetweenLabels(2);
  ValueFormatter custom=new MyValueFormatter();
  YAxis leftAxis=mChart.getAxisLeft();
  leftAxis.setTypeface(mTf);
  leftAxis.setLabelCount(8);
  leftAxis.setValueFormatter(custom);
  leftAxis.setPosition(YAxisLabelPosition.OUTSIDE_CHART);
  YAxis rightAxis=mChart.getAxisRight();
  rightAxis.setDrawGridLines(false);
  rightAxis.setTypeface(mTf);
  rightAxis.setLabelCount(8);
  rightAxis.setValueFormatter(custom);
  Legend l=mChart.getLegend();
  l.setPosition(LegendPosition.BELOW_CHART_LEFT);
  l.setForm(LegendForm.SQUARE);
  l.setFormSize(9f);
  l.setTextSize(11f);
  l.setXEntrySpace(4f);
  setData(12,50);
  mSeekBarY.setProgress(50);
  mSeekBarX.setProgress(12);
  mSeekBarY.setOnSeekBarChangeListener(this);
  mSeekBarX.setOnSeekBarChangeListener(this);
}