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Android Application Pinch To Zoom


Corey

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So I am working on a simple android application and on one of my pages I am going to have a map of my campus. I want to be able to use the pinch to zoom feature to zoom in on the picture and look at it closer.

 

Here is the imageview

<ImageView
        android:id="@+id/imageCampusMap"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:contentDescription="@string/map_description"
        android:gravity="center"
        android:src="@drawable/map" />

My Activity Java file just opens up the xml.

 

public class CampusMap extends Activity {
// Open the layout for the CampusMap Activity
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_campusmap);
	}
	
}

 

 

I thought it would be a simple task to just insert some code to pinch to zoom, but after spending some time googling I came across a large amount of code in order to do this. It was kind of confusing to look at hence why I came here :P

 

Like I found an example here -  http://stackoverflow.com/questions/6758847/pinch-zoom-in-android-for-an-imageview

 

The solution uses something like

 

public class MyImageView extends View {

 

How would my Activity Java file call this view class? That is what was confusing me. Or would this replace my previous activity java file mentioned earlier?

Edited by Corey
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