How To Create Bar-chart With Different Color For Each Bar?

July 02, 2024 Post a Comment

We are creating bar chart for file manager application, we have to display different color for each bar. Written following code globally. GraphicalView chartView = null; private Ca

Solution 1:

The bar color in a bar chart is given by its renderer. Each series has a renderer. In order to have a separate color for each bar you will have to add several series, each one having only one bar.

Solution 2:

Hi Have a look at this code.

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;

publicclassMainActivityextendsActivity {
 LinearLayout linearChart;

 @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  linearChart = (LinearLayout) findViewById(R.id.linearChart);
  int colerloop[] = { 1, 2, 2, 2, 3, 3, 3, 3, 1, 1 };
  int heightLoop[] = { 300, 200, 200, 200, 100, 100, 100, 100, 300, 300 };
  for (intj=0; j < colerloop.length; j++) {
   drawChart(1, colerloop[j], heightLoop[j]);
  }
 }

 publicvoiddrawChart(int count, int color, int height) {
  System.out.println(count + color + height);
  if (color == 3) {
   color = Color.RED;
  } elseif (color == 1) {
   color = Color.BLUE;
  } elseif (color == 2) {
   color = Color.GREEN;
  }

  for (intk=1; k <= count; k++) {
   Viewview=newView(this);
   view.setBackgroundColor(color);
   view.setLayoutParams(newLinearLayout.LayoutParams(25, height));
   LinearLayout.LayoutParamsparams= (LinearLayout.LayoutParams) view
     .getLayoutParams();
   params.setMargins(3, 0, 0, 0); // substitute parameters for left,// top, right, bottom
   view.setLayoutParams(params);
   linearChart.addView(view);
  }
 }
}