api-impl: fixes for apps using old support library

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

@@ -268,7 +268,8 @@ public class Activity extends ContextThemeWrapper implements Window.Callback, La
 		System.out.printf("%x\n", root_view.id);
 		System.out.println("~~~~~~~~~~~");
 
-		setContentView(root_view);
+		window.setContentView(root_view);
+		onContentChanged();
 	}
 
 	public void setContentView(View view, ViewGroup.LayoutParams layoutParams) {

src/api-impl/android/content/Intent.java

@@ -350,6 +350,7 @@ public class Intent implements Parcelable {
 
 	public void setExtrasClassLoader(ClassLoader loader) {}
 	public Intent setClassName(Context packageContext, String className) {
+		setComponent(new ComponentName(packageContext, className));
 		return this;
 	}
 

src/api-impl/android/graphics/Paint.java

@@ -37,6 +37,10 @@ public class Paint {
 		native_set_color(paint, color);
 	}
 
+	public void setARGB(int a, int r, int g, int b) {
+		setColor(Color.argb(a, r, g, b));
+	}
+
 	public int getColor() {
 		return native_get_color(paint);
 	}

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

@@ -84,6 +84,7 @@ public class LayoutInflater {
 			context = new ContextThemeWrapper(context, themeResId);
 		}
 		ta.recycle();
+		constructor.setAccessible(true);
 		View view_instance = (View)constructor.newInstance(context, attrs);
 
 		return view_instance;

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

@@ -67,4 +67,6 @@ public interface MenuItem {
 	public CharSequence getTitleCondensed();
 
 	public CharSequence getTitle();
+
+	public MenuItem setNumericShortcut(char numericChar);
 }

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

@@ -97,7 +97,7 @@ public class ViewGroup extends View implements ViewParent, ViewManager {
 	// Reusing removeView in removeViewInLayout is not possible, because e.g.
 	// ViewPager overrides removeView to call removeViewInLayout
 	protected void removeViewInternal(View child) {
-		if (child.parent != this)
+		if (child == null || child.parent != this)
 			return;
 		child.parent = null;
 		children.remove(child);

src/api-impl/android/widget/PopupMenu.java

@@ -539,6 +539,12 @@ public class PopupMenu {
 			// TODO Auto-generated method stub
 			throw new UnsupportedOperationException("Unimplemented method 'getTitle'");
 		}
+
+		@Override
+		public MenuItem setNumericShortcut(char numericChar) {
+			// TODO Auto-generated method stub
+			throw new UnsupportedOperationException("Unimplemented method 'setNumericShortcut'");
+		}
 	}
 
 }

src/api-impl/android/widget/Spinner.java

@@ -5,7 +5,7 @@ import android.database.DataSetObserver;
 import android.util.AttributeSet;
 
 public class Spinner extends AbsSpinner {
-	private Observer observer = new Observer();
+	private Observer observer;
 
 	public Spinner(Context context) {
 		super(context);
@@ -27,6 +27,8 @@ public class Spinner extends AbsSpinner {
 	protected native void native_setAdapter(long widget, SpinnerAdapter adapter);
 
 	public void setAdapter(SpinnerAdapter adapter) {
+		if (observer == null)
+			observer = new Observer();
 		SpinnerAdapter oldAdapter = getAdapter();
 		if (oldAdapter != null)
 			oldAdapter.unregisterDataSetObserver(observer);