findViewById(): only search among child views

also set default content view in Window

src/api-impl/android/app/Activity.java

@@ -239,7 +239,9 @@ public class Activity extends ContextWrapper implements Window.Callback {
 
 	public <T extends android.view.View> T findViewById(int id) {
 		System.out.println("- findViewById - asked for view with id: " + id);
-		View view = View.view_by_id.get(id);
+		View view = null;
+		if (window.contentView != null)
+			view = window.contentView.findViewById(id);
 		System.out.println("- findViewById - found this: " + view);
 
 		return (T)view;

src/api-impl/android/view/View.java

@@ -808,8 +808,6 @@ public class View extends Object {
 
 	public long widget; // pointer
 
-	public static HashMap<Integer, View> view_by_id = new HashMap<Integer, View>();
-
 	private int oldWidthMeasureSpec = -1;
 	private int oldHeightMeasureSpec = -1;
 	private boolean layoutRequested = true;
@@ -836,7 +834,6 @@ public class View extends Object {
 			int id = attrs.getAttributeResourceValue("http://schemas.android.com/apk/res/android", "id", 0);
 			if (id != 0) {
 				this.id = id;
-				view_by_id.put(id, this);
 			}
 
 
@@ -860,8 +857,10 @@ public class View extends Object {
 	}
 
 	public View findViewById(int id) {
-		/* TODO: this should probably only search among children, but the id is surely unique anyway? :P */
-		return view_by_id.get(id);
+		if (this.id == id)
+			return this;
+		else
+			return null;
 	}
 
 	public void onDraw(Canvas canvas) {}
@@ -946,7 +945,6 @@ public class View extends Object {
 
 	public void setId(int id) {
 		this.id = id;
-		view_by_id.put(id, this);
 	}
 
 	public void setOnKeyListener(OnKeyListener l) {}

src/api-impl/android/view/ViewGroup.java

@@ -304,6 +304,17 @@ public class ViewGroup extends View implements ViewParent, ViewManager {
 
 	public void setClipToPadding(boolean clipToPadding) {}
 
+	public View findViewById(int id) {
+		if (this.id == id)
+			return this;
+		for (View child: children) {
+			View result = child.findViewById(id);
+			if (result != null)
+				return result;
+		}
+		return null;
+	}
+
 	public static class LayoutParams {
 		public static final int FILL_PARENT = -1;
 		public static final int MATCH_PARENT = -1;

src/api-impl/android/view/Window.java

@@ -28,6 +28,8 @@ public class Window {
 
 	public Window(Window.Callback callback) {
 		this.callback = callback;
+		contentView = new ViewGroup(Context.this_application);
+		contentView.setId(android.R.id.content);
 	}
 
 	public void addFlags(int flags) {}
@@ -66,7 +68,10 @@ public class Window {
 	}
 
 	public View findViewById(int id) {
-		return View.view_by_id.get(id);
+		if (contentView != null)
+			return contentView.findViewById(id);
+		else
+			return null;
 	}
 
 	public View peekDecorView() {