android使用MPAndroidChart开源图表折线图
16lz
2021-01-23
1. 将mpandroidchartlibrary-2-1-6.ja包copy到项目的libs中在引用
2:布局文件
3:后台代码
public class OilReportformsFragment extends Fragment{@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {// TODO Auto-generated method stub//return super.onCreateView(inflater, container, savedInstanceState);return inflater.inflate(R.layout.oilreportforms, container, false);}@Overridepublic void onActivityCreated(Bundle savedInstanceState) {// TODO Auto-generated method stub//getActivity().getActionBar().setDisplayHomeAsUpEnabled(true); super.onActivityCreated(savedInstanceState);LineChart mChart = (LineChart)getActivity().findViewById(R.id.chart1);mChart.setDescription("");mChart.setDrawGridBackground(false); ///ajmChart.setTouchEnabled(true);mChart.setDragEnabled(true);mChart.setScaleEnabled(true); Typeface mTf = Typeface.createFromAsset(getActivity().getApplicationContext().getAssets(), "OpenSans-Regular.ttf"); XAxis xAxis = mChart.getXAxis(); xAxis.setPosition(XAxisPosition.BOTTOM); xAxis.setTypeface(mTf); xAxis.setDrawGridLines(false); xAxis.setDrawAxisLine(true); YAxis leftAxis = mChart.getAxisLeft(); leftAxis.setTypeface(mTf); leftAxis.setLabelCount(5, false); YAxis rightAxis = mChart.getAxisRight(); rightAxis.setTypeface(mTf); rightAxis.setLabelCount(5, false); rightAxis.setDrawGridLines(false); // set data mChart.setData((LineData)generateDataLine(1)); // do not forget to refresh the chart // holder.chart.invalidate(); mChart.animateX(750);} private LineData generateDataLine(int cnt) { ArrayList e1 = new ArrayList(); for (int i = 0; i < 12; i++) { e1.add(new Entry((int) (Math.random() * 65), i)); } LineDataSet d1 = new LineDataSet(e1, "New DataSet " + cnt + ", (1)"); /* d1.setLineWidth(2.5f); d1.setCircleSize(4.5f);*/ d1.setLineWidth(2.5f); d1.setCircleSize(5.5f);//折线的圆点大小 d1.setHighLightColor(Color.rgb(244, 117, 117)); d1.setDrawValues(true); ArrayList e2 = new ArrayList(); for (int i = 0; i < 12; i++) { e2.add(new Entry(e1.get(i).getVal() - 30, i)); } ArrayList sets = new ArrayList(); sets.add(d1); //这个图标坐标显示对应的坐标是按照顺序对应的，第一个y对应第一个x,这么来的 ArrayList m = new ArrayList(); m.add("9:00:37"); m.add("9:30:28"); m.add("10:00"); m.add("10:30"); m.add("May"); m.add("Jun"); m.add("12:00:59"); m.add("Aug"); m.add("Sep"); m.add("Okt"); m.add("Nov"); m.add("Dec"); LineData cd = new LineData(m, sets); return cd; }@Overridepublic void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setHasOptionsMenu(true);//添加菜单不调用该方法是没有用的}public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {// TODO Auto-generated method stubmenu.clear(); inflater.inflate(R.menu.backaj, menu); super.onCreateOptionsMenu(menu, inflater);}@Overridepublic boolean onOptionsItemSelected(MenuItem item) { if(item.getItemId() == android.R.id.home){ getActivity().getActionBar().setDisplayHomeAsUpEnabled(false); MainActivity mc =(MainActivity)getActivity();mc.switchContent(this,getActivity().getSupportFragmentManager().findFragmentByTag("more"),"");}if(item.getItemId() == R.id.action_back){ MainActivity mc =(MainActivity)getActivity();mc.switchContent(this,getActivity().getSupportFragmentManager().findFragmentByTag("more"),"");} return true;} } 4:常见异常处理
Typeface mTf = Typeface.createFromAsset(getActivity().getApplicationContext().getAssets(), "OpenSans-Regular.ttf");
java.lang.RuntimeException: native typeface cannot be made
需要把对应的文件复制到assets目录里边不然找不到这里的文件是OpenSans-Regular.ttf
5:mpandroidchart开源git地址
https://github.com/PhilJay/MPAndroidChart
git文档
https://github.com/PhilJay/MPAndroidChart/wiki
6:android mpandroidchart 设置y抽不从0开始,让y轴更具坐标自适应
YAxis yal =mChart.getAxisLeft();yal.setStartAtZero(false);YAxis yar =mChart.getAxisRight();yar.setStartAtZero(false);更多相关文章
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