Use of pie charts (Piechart) and column charts (Barchart)

Recently in the work of the need to use the function of the pie chart, online check the Mpandroidchart Open Source Chart Library is a good thing, and downloaded the Mpandroidchart project run. So I wrote a simple example, using the Piechart (pie chart) method is as follows:
Source code Download Address: Https://github.com/PhilJay/MPAndroidChart
(i) Import it into the project (more methods are described on GitHub)
Here I am using Android Studio, just add the following code to the Build.grade file in module

Repositories {
    maven {URL "Https://jitpack.io"}
}

dependencies {
    compile ' Com.github.PhilJay: mpandroidchart:v2.2.5 '
}

After you add it, the compilation succeeds.
(ii) Add Piechart to the layout file you want to use

        <com.github.mikephil.charting.charts.piechart
            android:id= "@+id/piechart"
            android:layout_width= " Match_parent "
            android:layout_height=" match_parent ">

        </ Com.github.mikephil.charting.charts.piechart>

(iii) Use of Piechart in code

 private void Initchart () {//sets whether the pie chart receives a click event, and the default is True piechart.settouchenabled (true);
        Sets whether the pie chart uses percent Piechart.setusepercentvalues (true);
        Set the text description piechart.setdescription ("Test") in the lower right corner of the pie chart;

        Sets the text size in the lower-right corner of the pie chart piechart.setdescriptiontextsize (16);
        Whether to display the disc intermediate text, the default display Piechart.setdrawcentertext (TRUE);
        Set the disc intermediate text Piechart.setcentertext ("I am in the Middle");
        Sets the size of the disc intermediate text piechart.setcentertextsize (20);
        Sets the color Piechart.setcentertextcolor (color.white) of the middle text of the disc;

        Sets the font piechart.setcentertexttypeface (typeface.default) for the middle text of the disc;
        Sets the color Piechart.setholecolor (color.green) of the intermediate disc;

        Sets the radius of the intermediate disk, the value of which is the percentage of the pie chart Piechart.setholeradius (20);

        Sets the radius of the middle transparent circle, and the value is the percentage of the pie chart Piechart.settransparentcircleradius (40);
        Whether to display an empty space in the middle of the pie chart, piechart.setdrawholeenabled (true) is displayed by default;
        Sets whether the disk rotates, the default rotation piechart.setrotationenabled (true); //Set initial rotation angle piechart.setrotationangle (0);
        Set scale graph Legend mlegend = Piechart.getlegend ();
        Sets the scale graph to show where in the pie chart mlegend.setposition (Legend.LegendPosition.RIGHT_OF_CHART);
Set the shape of the scale chart, which is square by default, and can be square, round, linear mlegend.setform (Legend.LegendForm.CIRCLE);
Mlegend.setxentryspace (7f);

        Mlegend.setyentryspace (5f);
Set X-axis animation Piechart.animatex (1800);
Set y-axis animation//Piechart.animatey (1800);

        Set the XY axis together with the animation//piechart.animatexy (1800, 1800);

        Binding Data Binddata (3);
            Set a selected area to listen Piechart.setonchartvalueselectedlistener (new Onchartvalueselectedlistener () {@Override public void onvalueselected (Entry e, int datasetindex, Highlight h) {Toast.maketext (mainactiv
            ity.this,datasetindex+ "" +e.tostring (), Toast.length_short). Show (); } @Override public void onnothingselected () {}}); }/** * * @param count is divided into several parts */private void Binddata (int count) {/** * namelist Used to represent the text on each piece of pie. * For example: Part One, Part two, part three */arraylist<string> namelist = new arraylist<string>
        ();
        for (int i = 0; i < count; i++) {Namelist.add ("part" + (i + 1)); }/** * ValueList divides a pie chart into three parts, the value of the percentage of each region * Entry constructor * The first value represents the percentage, the second value represents the region bit * (can have a third parameter, which represents the data carrying the object) is useless here. */arraylist<entry> valueList = new ARRAYLIST&LT;ENTRY&G
        t; ();
        Valuelist.add (New Entry (20, 0));
        Valuelist.add (New Entry (30, 1));

        Valuelist.add (New Entry (50, 2));
        Display on scale chart Piedataset dataSet = new Piedataset (valueList, "meaning of different colors");
        Sets the distance between a pie chart dataset.setslicespace (3f);

        Some areas are selected when the extra length of the Dataset.setselectionshift (5f); Set the color of each area of the pie chart arraylist<integer> colors = newArraylist<integer> ();
        Colors.add (color.red);
        Colors.add (Color.green);
        Colors.add (Color.Blue);

        Dataset.setcolors (colors);
        Piedata data = new Piedata (NameList, DataSet);
        Set to show Data.setvalueformatter (New Percentformatter ()) as a percentage;
        The size of the area text data.setvaluetextsize (11f);
        Sets the color of the area text Data.setvaluetextcolor (color.white);

        Sets the font data.setvaluetypeface (Typeface.default) for the area text;

        Piechart.setdata (data);
        Sets whether to display area text content Piechart.setdrawslicetext (piechart.isdrawslicetextenabled ()); Sets whether to display the value of the zone percentage for (idataset<?> set:pieChart.getData (). Getdatasets ()) {set.setdrawvalues (!set
        . isdrawvaluesenabled ());
        }//Undo all highlights Piechart.highlightvalues (null);
    Piechart.invalidate (); }

Column chart using:

 private void Initbarchart () {//sets whether the rectangle shadow displays Barchart.setdrawbarshadow (false);
        Sets whether the value displays Barchart.setdrawvalueabovebar (true) above the rectangle;
        Set the lower right corner to describe the barchart.setdescription ("test");
        Show Barchart.setnodatatext when no data is used ("no data"); If more than entries is displayed in the chart, no values would be//drawn Barchart.setmaxvisibleva

        Luecount (60);
        Sets whether barchart.settouchenabled can be touched (true);
        Whether you can drag barchart.setdragenabled (true);
         Whether barchart.setscaleenabled can be scaled (true);
        Set two-finger scaling barchart.setpinchzoom (false);
        Sets whether the table color is displayed and the gap between the rectangles is barchart.setdrawgridbackground (false);

        Set the color of the table, the gap between the rectangles color barchart.setgridbackgroundcolor (color.gray);
        Set the scale display Legend L = barchart.getlegend ();
        Sets the scale at which position l.setposition (Legend.LegendPosition.BELOW_CHART_LEFT) is displayed in the column chart; Set scale display shape, square, round, linear l.sEtform (Legend.LegendForm.SQUARE);
        Sets the size of the scale display shape l.setformsize (15f);
        Sets the size of the scale display text l.settextsize (15f);

        L.setxentryspace (4f);
        Set properties on X-axis Xaxis Xaxis = Barchart.getxaxis ();
        The setting label is displayed above or below the column chart xaxis.setposition (XAxis.XAxisPosition.TOP);
        Xaxis.settypeface (Typeface.default);
        Sets whether to draw table Xaxis.setdrawgridlines (false);

        Set the X-label Gap xaxis.setspacebetweenlabels (2);
        Sets the property on the left y-axis of the column chart YAxis leftaxis = Barchart.getaxisleft ();
        Leftaxis.settypeface (Typeface.default);
        Sets the number of labels on the y-axis, and a Boolean value of TRUE indicates that 8 Leftaxis.setlabelcount (8, false) must be required;
        Leftaxis.setvalueformatter (new Defaultyaxisvalueformatter (0));
        Sets the position of the label in the column chart leftaxis.setposition (YAxis.YAxisLabelPosition.OUTSIDE_CHART);
        Sets the spacing between the y-axis labels leftaxis.setspacetop (15f); Leftaxis.setaxisminvalue (0f); This replaces Setstartatzero (TRUE)//sets the genus on the right y-axis of the column chartThe same as above yaxis Rightaxis = Barchart.getaxisright ();
        Rightaxis.setdrawgridlines (FALSE);
        Rightaxis.settypeface (Typeface.default);
        Rightaxis.setlabelcount (5, true);
        Rightaxis.setvalueformatter (new Defaultyaxisvalueformatter (0));
        Rightaxis.setspacetop (15f); Rightaxis.setaxisminvalue (0f);
        This replaces Setstartatzero (true)//hides the right axis//Barchart.getaxisright (). setenabled (false);
        Hide the Left axis (IBID.)//Barchart.getaxisleft (). setenabled (false);

    SetData (15); }

/** * Bind data * @param number of labels on the count x axis */private void SetData (int count) {//Set label data on x-axis direction a
        rraylist<string> xvals = new arraylist<string> ();
        for (int i = 0; i < count; i++) {Xvals.add (i+ "");
        }//sets the value of each rectangle on the y-axis arraylist<barentry> yVals1 = new arraylist<barentry> ();
        for (int i = 0; i < count; i++) {Yvals1.add (new Barentry (20*i, i));
        }//The first parameter is a collection of values for each rectangle in the y-axis direction, and the second parameter is proportional to the text description bardataset Set1 = new Bardataset (YVALS1, "different colors represent a different value");
        Set the spacing between rectangles, the parameter is a percentage, you can control the width of the rectangle set1.setbarspacepercent (10f);
        Sets the color of the rectangle int colors[]={0xffff0000,0xff00ff00,0xff0000ff};

        Set1.setcolors (colors);
        arraylist<ibardataset> dataSets = new arraylist<ibardataset> ();
        Datasets.add (SET1);
        Set the data for the column chart bardata to new BarData (Xvals, dataSets);
        Data.setvaluetextsize (10f); Data.setvaLuetypeface (Typeface.default);
    Barchart.setdata (data); }

Column chart More property settings view address http://www.ithao123.cn/content-10519924.html