How Create Pie Chart In Android

In Genearl Graphs Play very important role , but in android we don't have  any Graphs related API  .
But with the help of general android api we can generate pie charts .
files
====
main.xml ( view purpose)
main.java ( main class )
view_piechart.java ( pie chart properties)
piedetailsitem.java ( attributes)

main.xml
-----------

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">

<LinearLayout android:id="@+id/pie_container"
android:layout_width="fill_parent" android:layout_height="wrap_content"

android:orientation="vertical">
</LinearLayout>

<TextView android:id="@+id/tvAndroid" android:layout_width="110dip"
android:layout_height="wrap_content" android:layout_below="@+id/pie_container"
android:text="Android" android:padding="10dip" android:textStyle="bold"
android:background="#444544" android:layout_marginTop="200dip" />

<TextView android:id="@+id/tvIphone" android:layout_width="110dip"
android:layout_height="wrap_content" android:layout_below="@+id/pie_container"
android:layout_toRightOf="@+id/tvAndroid" android:text="IPhone"
android:padding="10dip" android:textStyle="bold" android:background="#878887"
android:layout_marginTop="200dip" />
<TextView android:id="@+id/tvBlackBerry" android:layout_width="110dip"
android:layout_height="wrap_content" android:layout_below="@+id/pie_container"
android:layout_toRightOf="@+id/tvIphone" android:text="BlackBerry"
android:padding="10dip" android:textStyle="bold" android:background="#98967F"
android:layout_marginTop="200dip" />

<TextView android:id="@+id/tvNokia" android:layout_width="160dip"
android:layout_height="wrap_content" android:layout_below="@+id/tvBlackBerry"
android:layout_toRightOf="@+id/tvSamsung" android:text="Others"
android:padding="10dip" android:textStyle="bold" android:background="#A1A1A1" />

<TextView android:id="@+id/tvSamsung" android:layout_width="160dip"
android:layout_height="wrap_content" android:layout_below="@+id/tvAndroid"
android:text="Nokia" android:padding="10dip" android:textStyle="bold"

android:background="#0000FF" />
</RelativeLayout>

main.java
-----------

package sra.chart;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.os.Bundle;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;
import android.widget.LinearLayout;

public class Main extends Activity {
List<PieDetailsItem> piedata = new ArrayList<PieDetailsItem>(0);

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

PieDetailsItem item;
int maxCount = 0;
int itemCount = 0;
int items[] = { 20, 40, 10, 15, 5 };
int colors[] = { -6777216, -16776961, -16711681, -12303292, -7829368 };
String itemslabel[] = { " vauesr ur 100", " vauesr ur 200",
" vauesr ur 300", " vauesr ur 400", " vauesr ur 500" };
for (int i = 0; i < items.length; i++) {
itemCount = items[i];
item = new PieDetailsItem();
item.count = itemCount;
item.label = itemslabel[i];
item.color = colors[i];
piedata.add(item);
maxCount = maxCount + itemCount;
}
int size = 155;
int BgColor = 0xffa11b1;
Bitmap mBaggroundImage = Bitmap.createBitmap(size, size,
Bitmap.Config.ARGB_8888);
View_PieChart piechart = new View_PieChart(this);
piechart.setLayoutParams(new LayoutParams(size, size));
piechart.setGeometry(size, size, 2, 2, 2, 2, 2130837504);
piechart.setSkinparams(BgColor);
piechart.setData(piedata, maxCount);
piechart.invalidate();
piechart.draw(new Canvas(mBaggroundImage));
piechart = null;
ImageView mImageView = new ImageView(this);
mImageView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
mImageView.setBackgroundColor(BgColor);
mImageView.setImageBitmap(mBaggroundImage);
LinearLayout finalLayout = (LinearLayout) findViewById(R.id.pie_container);
finalLayout.addView(mImageView);
}
}

view_piechart.java
------------------

package sra.chart;

import java.util.List;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;

public class View_PieChart extends View
{
public static final int WAIT = 0;
public static final int IS_READY_TO_DRAW = 1;
public static final int IS_DRAW = 2;
private static final float START_INC = 30;
private Paint mBagpaints = new Paint();
private Paint mLinePaints = new Paint();

private int mWidth;
private int mHeight;
private int mGapTop;
private int mGapBottm;
private int mBgcolor;
private int mGapleft;
private int mGapright;
private int mState = WAIT;
private float mStart;
private float mSweep;
private int mMaxConnection;
private List<PieDetailsItem> mdataArray;

public View_PieChart(Context context) {
super(context);
Log.w(" single cons ", " single cons");
}

public View_PieChart(Context context, AttributeSet attr) {
super(context, attr);
Log.w(" double cons ", " double cons");
}

@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (mState != IS_READY_TO_DRAW) {
return;
}
canvas.drawColor(mBgcolor);
mBagpaints.setAntiAlias(true);
mBagpaints.setStyle(Paint.Style.FILL);
mBagpaints.setColor(0x88FF0000);
mBagpaints.setStrokeWidth(0.0f);
mLinePaints.setAntiAlias(true);
mLinePaints.setColor(0xff000000);
mLinePaints.setStrokeWidth(3.0f);
mLinePaints.setStyle(Paint.Style.STROKE);
RectF mOvals = new RectF(mGapleft, mGapTop, mWidth - mGapright, mHeight
- mGapBottm);
mStart = START_INC;
PieDetailsItem item;
for (int i = 0; i < mdataArray.size(); i++) {
item = (PieDetailsItem) mdataArray.get(i);
mBagpaints.setColor(item.color);
mSweep = (float) 360* ((float) item.count / (float) mMaxConnection);
canvas.drawArc(mOvals, mStart, mSweep, true, mBagpaints);
canvas.drawArc(mOvals, mStart, mSweep, true, mLinePaints);
mStart = mStart + mSweep;
}

mState = IS_DRAW;
}

public void setGeometry(int width, int height, int gapleft, int gapright,
int gaptop, int gapbottom, int overlayid) {

mWidth = width;
mHeight = height;
mGapleft = gapleft;
mGapright = gapright;
mGapBottm = gapbottom;
mGapTop = gaptop;

}

public void setSkinparams(int bgcolor) {
Log.w(" Set bg color  : ", bgcolor + "");
mBgcolor = bgcolor;
}

public void setData(List<PieDetailsItem> data, int maxconnection) {
mdataArray = data;
mMaxConnection = maxconnection;
Log.w(" Max Connection  ", maxconnection + " " + "  Adataarray :"
+ data.toString());
mState = IS_READY_TO_DRAW;
}

public void setState(int state) {
mState = state;
}

public int getColorValues(int index) {
if (mdataArray == null) {
return 0;
}

else if (index < 0)
return ((PieDetailsItem) mdataArray.get(0)).color;
else if (index > mdataArray.size())
return ((PieDetailsItem) mdataArray.get(mdataArray.size() - 1)).color;
else
return ((PieDetailsItem) mdataArray.get(mdataArray.size() - 1)).color;

}

}

Piedetails.item.java

------------------------package sra.chart;

public class PieDetailsItem {

public int count, color;

public float percent;

public String label;

}

final Out Put 

For Source ClickHere