Customizing dynamically generated line charts

package com.example.line;import java.util.arraylist;import java.util.hashmap;import  java.util.list;import java.util.map;import android.annotation.suppresslint;import  android.content.context;import android.graphics.canvas;import android.graphics.color;import  Android.graphics.paint;import android.graphics.paintflagsdrawfilter;import android.util.attributeset ; import android.view.view;public class lineview extends view { private  final static String X_KEY =  "Xpos"; private final static  string y_key =  "Ypos"; private list<map<string, integer>>  Mlistpoint = new arraylist<map<string, integer>> ();  Paint mPaint  = new paint ();  public lineview (Context context, attributeset attrs,  int defstyle)  {  super (cOntext, attrs, defstyle);  } public lineview (Context context, attributeset  attrs)  {  super (context, attrs);  } public lineview (Context  Context)  {  super (context); }  @SuppressLint ("drawallocation")   @Override   Protected void ondraw (Canvas canvas)  {  super.ondraw (Canvas);   Mpaint.setcolor (color.red);   mpaint.setantialias (True);  for  (int index =  0; index < mlistpoint.size ();  index++)  {   if  (index  > 0)  {    canvas.drawline (Mlistpoint.get (index - 1). Get (X_KEY ),       mlistpoint.get (index - 1). Get (Y_key),       mlistpoint.get (Index). Get (X_key),  mlistpoint.get (index)          .get (Y_key),  mpaint);     canvas.setdrawfilter (New paintflagsdrawfilter (0,       paint.anti_alias_flag | paint.filter_bitmap_flag));    }  } }  /**  *  Set Data   *  @param  curX  *  @param  curY   */ public void setlinepoint (Int curx, int cury)  {  Map< String, integer> temp = new hashmap<string, integer> ();   Temp.put (X_key, curx);   temp.put (Y_key, cury);   mlistpoint.add (temp);   invalidate ();  }}ui class:package com.example.line;import android.os.bundle;import  android.os.handler;import android.os.message;import android.annotation.suppresslint;import  android.app.Activity; @SuppressLint ("Handlerleak") public class mainactivity extends  activity { private static  final int msg_data_change = 0x11; private lineview mlineview; private  Handler mHandler; private int mX = 0;  @Override  protected  Void oncreate (bundle savedinstancestate)  {  super.oncreate (savedInstanceState);   setcontentview (R.layout.activity_main);   init ();  mhandler = new  Handler ()  {    @Override    public void handlemessage (message  msg)  {    switch  (msg.what)  {    case msg_data_ Change:     mlineview.setlinepoint (MSG.ARG1,&NBSP;MSG.ARG2);      break;    }    super.handlemessage (msg);    }   };  new thread ()  {    @Override    public  Void run ()  {    for  (int index = 0; index < 100; index++)  {      message message = new message ();      message.what = MSG_DATA_CHANGE;     message.arg1 = mX;      message.arg2 =  (int)   (math.random ()  * 200);      mhandler.sendmessage (message);     try {       sleep (;     } catch ) (interruptedexception e)  {      // TODO Auto-generated catch block       e.printstacktrace ();      }     mx  += 10;    }   }  }.start (); } private  Void init () &NBSP;{&NBSP;&Nbsp;mlineview =  (Lineview)  findviewbyid (r.id.line);  }} layout <relativelayout xmlns: Android= "http://schemas.android.com/apk/res/android"     xmlns:tools= "http// Schemas.android.com/tools "    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 "    tools:context=". Mainactivity " >    <com.example.line.LineView         android:id= "@+id/line"         android:layout_ Centerinparent= "true"         android:layout_width="400DP"         android:layout_height= "400DP"          android:background= "#ffffff"         /></ Relativelayout>

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Customizing dynamically generated line charts