Chart frame hellocharts (2) Bar chart

1.

2.xml Code

Activity_column_chart.xml

<framelayout xmlns:android= "Http://schemas.android.com/apk/res/android"
    Android:id= "@+id/container"
    Android:layout_width= "Match_parent"
    android:layout_height= "Match_parent"
/>
Fragment_column_chart.xml

<relativelayout xmlns:android= "Http://schemas.android.com/apk/res/android"
    Android:layout_width= "Match_parent"
    android:layout_height= "Match_parent"
    android:paddingbottom= "@dimen/activity_vertical_margin"
    android:paddingleft= "@dimen/activity_horizontal_margin"
    android:paddingright= "@dimen/activity_horizontal_margin"
    android:paddingtop= "@dimen/activity_vertical_margin"
>
    <lecho.lib.hellocharts.view.columnchartview
        Android:id= "@+id/chart"
        Android:layout_width= "Match_parent"
        android:layout_height= "Match_parent" >
    </lecho.lib.hellocharts.view.ColumnChartView>
</RelativeLayout>

3.java Code

Columnchartactivity.java

public class Columnchartactivity extends Appcompatactivity {

@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.activity_column_chart);
if (savedinstancestate = = null) {
Getsupportfragmentmanager (). BeginTransaction (). Add (R.id.container, New Placeholderfragment ()). commit ();
}
}

/**
* A fragment containing a column chart.
*/
public static class Placeholderfragment extends Fragment {

private static final int default_data = 0;
private static final int subcolumns_data = 1;
private static final int stacked_data = 2;
private static final int negative_subcolumns_data = 3;
private static final int negative_stacked_data = 4;

Private Columnchartview chart;
Private columnchartdata data;
Private Boolean hasaxes = true;
Private Boolean hasaxesnames = true;
Private Boolean haslabels = false;
Private Boolean haslabelforselected = false;
private int dataType = Default_data;

Public Placeholderfragment () {
}

@Override
Public View Oncreateview (layoutinflater inflater, ViewGroup container, Bundle savedinstancestate) {
Sethasoptionsmenu (TRUE);
View Rootview = inflater.inflate (R.layout.fragment_column_chart, container, false);

Chart = (Columnchartview) Rootview.findviewbyid (R.id.chart);
Chart.setonvaluetouchlistener (New Valuetouchlistener ());

Generatedata ();

return rootview;
}

private void Generatedefaultdata () {
int numsubcolumns = 1;
int numcolumns = 8;
Column can has many subcolumns, here by default I use 1 subcolumn in each of 8 columns.
list<column> columns = new arraylist<column> ();
List<subcolumnvalue> values;
for (int i = 0; i < NumColumns; ++i) {

values = new arraylist<subcolumnvalue> ();
for (int j = 0; j < Numsubcolumns; ++j) {
Values.add (new Subcolumnvalue (float) math.random () * 50f + 5, Chartutils.pickcolor ()));
}

Column column = new column (values);
Column.sethaslabels (Haslabels);
Column.sethaslabelsonlyforselected (haslabelforselected);
Columns.Add (column);
}

data = new Columnchartdata (columns);

if (hasaxes) {
Axis AxisX = new Axis ();
Axis Axisy = new Axis (). Sethaslines (True);
if (hasaxesnames) {
Axisx.setname ("Axis X");
Axisy.setname ("Axis Y");
}
Data.setaxisxbottom (AxisX);
Data.setaxisyleft (Axisy);
} else {
Data.setaxisxbottom (NULL);
Data.setaxisyleft (NULL);
}

Chart.setcolumnchartdata (data);

}

/**
* Generates columns with Subcolumns, columns has larger separation than subcolumns.
*/
private void Generatesubcolumnsdata () {
int numsubcolumns = 4;
int numcolumns = 4;
Column can has many subcolumns, here I use 4 subcolumn in each of 8 columns.
list<column> columns = new arraylist<column> ();
List<subcolumnvalue> values;
for (int i = 0; i < NumColumns; ++i) {

values = new arraylist<subcolumnvalue> ();
for (int j = 0; j < Numsubcolumns; ++j) {
Values.add (new Subcolumnvalue (float) math.random () * 50f + 5, Chartutils.pickcolor ()));
}

Column column = new column (values);
Column.sethaslabels (Haslabels);
Column.sethaslabelsonlyforselected (haslabelforselected);
Columns.Add (column);
}

data = new Columnchartdata (columns);

if (hasaxes) {
Axis AxisX = new Axis ();
Axis Axisy = new Axis (). Sethaslines (True);
if (hasaxesnames) {
Axisx.setname ("Axis X");
Axisy.setname ("Axis Y");
}
Data.setaxisxbottom (AxisX);
Data.setaxisyleft (Axisy);
} else {
Data.setaxisxbottom (NULL);
Data.setaxisyleft (NULL);
}

Chart.setcolumnchartdata (data);

}

/**
* Generates columns with stacked subcolumns.
*/
private void Generatestackeddata () {
int numsubcolumns = 4;
int numcolumns = 8;
Column can has many stacked subcolumns, here I use 4 Stacke subcolumn in each of 4 columns.
list<column> columns = new arraylist<column> ();
List<subcolumnvalue> values;
for (int i = 0; i < NumColumns; ++i) {

values = new arraylist<subcolumnvalue> ();
for (int j = 0; j < Numsubcolumns; ++j) {
Values.add (new Subcolumnvalue (float) math.random () * 20f + 5, Chartutils.pickcolor ()));
}

Column column = new column (values);
Column.sethaslabels (Haslabels);
Column.sethaslabelsonlyforselected (haslabelforselected);
Columns.Add (column);
}

data = new Columnchartdata (columns);

Set stacked flag.
Data.setstacked (TRUE);

if (hasaxes) {
Axis AxisX = new Axis ();
Axis Axisy = new Axis (). Sethaslines (True);
if (hasaxesnames) {
Axisx.setname ("Axis X");
Axisy.setname ("Axis Y");
}
Data.setaxisxbottom (AxisX);
Data.setaxisyleft (Axisy);
} else {
Data.setaxisxbottom (NULL);

Data.setaxisyleft (NULL);
}

Chart.setcolumnchartdata (data);
}

private void Generatenegativesubcolumnsdata () {

int numsubcolumns = 4;
int numcolumns = 4;
list<column> columns = new arraylist<column> ();
List<subcolumnvalue> values;
for (int i = 0; i < NumColumns; ++i) {

values = new arraylist<subcolumnvalue> ();
for (int j = 0; j < Numsubcolumns; ++j) {
int sign = Getsign ();
Values.add (new Subcolumnvalue (float) math.random () * 50f * sign + 5 * sign, Chartutils.pickcolor
()));
}

Column column = new column (values);
Column.sethaslabels (Haslabels);
Column.sethaslabelsonlyforselected (haslabelforselected);
Columns.Add (column);
}

data = new Columnchartdata (columns);

if (hasaxes) {
Axis AxisX = new Axis ();
Axis Axisy = new Axis (). Sethaslines (True);
if (hasaxesnames) {
Axisx.setname ("Axis X");
Axisy.setname ("Axis Y");
}
Data.setaxisxbottom (AxisX);
Data.setaxisyleft (Axisy);
} else {
Data.setaxisxbottom (NULL);
Data.setaxisyleft (NULL);
}

Chart.setcolumnchartdata (data);
}

private void Generatenegativestackeddata () {

int numsubcolumns = 4;
int numcolumns = 8;
Column can has many stacked subcolumns, here I use 4 Stacke subcolumn in each of 4 columns.
list<column> columns = new arraylist<column> ();
List<subcolumnvalue> values;
for (int i = 0; i < NumColumns; ++i) {

values = new arraylist<subcolumnvalue> ();
for (int j = 0; j < Numsubcolumns; ++j) {
int sign = Getsign ();
Values.add (new Subcolumnvalue (float) math.random () * 20f * sign + 5 * sign, chartutils.pickcolor ());
}

Column column = new column (values);
Column.sethaslabels (Haslabels);
Column.sethaslabelsonlyforselected (haslabelforselected);
Columns.Add (column);
}

data = new Columnchartdata (columns);

Set stacked flag.
Data.setstacked (TRUE);

if (hasaxes) {
Axis AxisX = new Axis ();
Axis Axisy = new Axis (). Sethaslines (True);
if (hasaxesnames) {
Axisx.setname ("Axis X");
Axisy.setname ("Axis Y");
}
Data.setaxisxbottom (AxisX);
Data.setaxisyleft (Axisy);
} else {
Data.setaxisxbottom (NULL);
Data.setaxisyleft (NULL);
}

Chart.setcolumnchartdata (data);
}

private int getsign () {
int[] Sign = new int[]{-1, 1};
return Sign[math.round (float) math.random ());
}

private void Generatedata () {
Switch (dataType) {
Case Default_data:
Generatedefaultdata ();
Break
Case Subcolumns_data:
Generatesubcolumnsdata ();
Break
Case Stacked_data:
Generatestackeddata ();
Break
Case Negative_subcolumns_data:
Generatenegativesubcolumnsdata ();
Break
Case Negative_stacked_data:
Generatenegativestackeddata ();
Break
Default
Generatedefaultdata ();
Break
}
}

Private class Valuetouchlistener implements Columnchartonvalueselectlistener {

@Override
public void onvalueselected (int columnindex, int subcolumnindex, subcolumnvalue value) {
Toast.maketext (Getactivity (), "Selected:" + value, Toast.length_short). Show ();
}

@Override
public void onvaluedeselected () {
TODO auto-generated Method Stub

}

}

}

}

Chart frame hellocharts (2) Bar chart