ITI0011:praktikum 10 T8

Tagasi ITI0011 lehele.

Üldine

Praktikum: 4.11.2014 kell 8:00

Koodinäide: http://pastebin.com/sG6CPrnt

Koodinäide

main_activity.xml:

<source lang="xml">

   <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="com.example.androiddrawing.MainActivity" >
    
       <com.example.androiddrawing.CanvasView
           android:layout_width="match_parent"
           android:layout_height="match_parent" />
    
   </RelativeLayout>

</source>

MainActivity.java:

<source lang="java">

   package com.example.androiddrawing;
    
   import java.util.ArrayList;
   import java.util.List;
    
   import android.content.Context;
   import android.graphics.Canvas;
   import android.graphics.Color;
   import android.graphics.Paint;
   import android.graphics.Path;
   import android.util.AttributeSet;
   import android.util.Log;
   import android.view.MotionEvent;
   import android.view.View;
    
   public class CanvasView extends View {
          
           private Paint paint = new Paint();
           private Path line = new Path();
           private static List<Path> lines = new ArrayList<Path>();
           private float clickX;
           private float clickY;
    
           public CanvasView(Context context, AttributeSet attrs) {
                   super(context, attrs);
                  
                   Log.d("TERE", "Laadis");
                  
                   paint.setAntiAlias(true);
                   paint.setStrokeWidth(5);
                   paint.setColor(Color.RED);
                   paint.setStyle(Paint.Style.STROKE);
                   paint.setStrokeJoin(Paint.Join.ROUND);
                  
                   line.moveTo(50, 50);
                   line.lineTo(200, 200);
                   lines.add(line);
           }
          
           @Override
           protected void onDraw(Canvas canvas) {
                   for (Path p: lines)
                           canvas.drawPath(p, paint);
                   canvas.drawPath(line, paint);
           }
          
           @Override
           public boolean onTouchEvent(MotionEvent event) {
                   float x = event.getX();
                   float y = event.getY();
                  
                   if (event.getAction() == MotionEvent.ACTION_DOWN) {
                           clickX = x;
                           clickY = y;
                   } else if (event.getAction() == MotionEvent.ACTION_UP) {
                           lines.add(line);
                   }
                  
                   line = new Path();
                   line.moveTo(clickX, clickY);
                   line.lineTo(x, y);
                  
                   invalidate();
                   return true;
           }
          
          
    
   }

</source>