chinakaifa

java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference at com.github.mikephil.charting.utils.Utils.drawXAxisValue(Utils.java:564) at com.github.mikephil.charting.renderer.XAxisRenderer.drawLabel(XAxisRenderer.java:231) at com.github.mikephil.charting.renderer.XAxisRenderer.drawLabels(XAxisRenderer.java:225) at com.github.mikephil.charting.renderer.XAxisRenderer.renderAxisLabels(XAxisRenderer.java:130) at com.github.mikephil.charting.charts.BarLineChartBase.onDraw(BarLineChartBase.java:251) at android.view.View.draw(View.java:23073) at android.view.View.updateDisplayListIfDirty(View.java:21930) at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4728) at...