Punkte auf einem ImageView zeichnen

1package de.mazet.guiapp;
2
3import android.app.Activity;
4import android.graphics.Bitmap;
5import android.graphics.Canvas;
6import android.graphics.Color;
7import android.graphics.Paint;
8import android.graphics.Paint.Style;
9import android.os.Bundle;
10import android.view.MotionEvent;
11import android.view.View;
12import android.view.View.OnTouchListener;
13import android.widget.ImageView;
14import android.widget.LinearLayout;
15import android.widget.TextView;
16import android.widget.Toast;
17
18public class controlActivity extends Activity implements OnTouchListener {
19 private TextView info;
20 private ImageView image;
21 private Canvas canvasbitmap;
22 private Paint paint = new Paint();
23 private Bitmap buffer;
24 private LinearLayout llayout;
25 private drawView drawview;
26 @Override
27
28 protected void onCreate(Bundle savedInstanceState) {
29 super.onCreate(savedInstanceState);
30
31
32 setContentView(R.layout.startlayout);
33
34 image = (ImageView)findViewById(R.id.imageViewfarbraum2);
35 info = (TextView)findViewById(R.id.textViewinfo2);
36 image.setOnTouchListener(this);
37
38 }
39
40 public boolean onTouch(View v, MotionEvent event) {
41
42 Toast.makeText(this, "X/Y Position: "+event.getX()+" / "+event.getY() +" / "+image.getHeight(), Toast.LENGTH_LONG).show();
43 //buffer = Bitmap.createBitmap(image.getWidth(),image.getHeight(),Config.RGB_565);
44 //buffer = BitmapFactory.decodeResource(getResources(), R.drawable.farbraum).copy(Bitmap.Config.ARGB_8888, true);
45 Paint paint = new Paint();
46 paint.setColor(Color.WHITE);
47 paint.setAntiAlias(true);
48 paint.setStyle(Style.FILL_AND_STROKE);
49 canvasbitmap = new Canvas(buffer);
50 canvasbitmap.drawCircle(event.getX(), event.getY(), 5, paint);
51
52 image.setImageBitmap(buffer);
53
54 return true;
55
56 }
57
58
59}

1<?xml version="1.0" encoding="utf-8"?>
2<LinearLayout android:layout_width="match_parent"
3 android:layout_height="match_parent"
4 android:orientation="vertical"
5 android:id="@+id/llayoutcontrol" xmlns:android="http://schemas.android.com/apk/res/android">
6
7
8 <RelativeLayout
9 android:id="@+id/relativeLayout1"
10 android:layout_width="match_parent"
11 android:layout_height="match_parent" >
12
13 <ImageView
14 android:id="@+id/imageViewfarbraum2"
15 android:layout_width="match_parent"
16 android:layout_height="match_parent"
17 android:layout_alignParentTop="true"
18 android:layout_centerHorizontal="true"
19 android:src="@drawable/farbraum" />
20
21 <TextView
22 android:id="@+id/textViewinfo2"
23 android:layout_width="wrap_content"
24 android:layout_height="150dp"
25 android:layout_alignParentBottom="true"
26 android:layout_alignParentLeft="true"
27 android:layout_alignParentRight="true"
28 android:gravity="center"
29 android:background="#FFFFFF"
30 android:text="TextView" />
31
32 </RelativeLayout>
33
34</LinearLayou