Create a custom view and call it programatically

Question

Here are my custom view:

public class BuzzView extends View {
 /**
 * Constructor. This version is only needed if you will be instantiating
 * the object manually (not from a layout XML file).
 * @param context
 */
 public BuzzView(Context context) {
 super(context);
 View.inflate(context, R.layout.buzz_view, null);
 }
}

My buzz_view.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent" >
 <ImageView
 android:id="@+id/vignette_image_jauge"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:layout_alignParentRight="true"
 android:src="@drawable/buzzomettre_sample" >
 </ImageView>
</RelativeLayout>

Than i want to add my custom view from my FrameLayout in my activity:

 BuzzView buzzView = new BuzzView(MosaiqueListActivity.this);
 FrameLayout frameLayout = (FrameLayout) 
v.findViewById(R.id.vignette_layout_jauge);
 frameLayout.addView(buzzView);

I am not getting my custom view in my RelativeLayout. Do you know why?

• Swati: try adding layout params
• haythem souissi: doesn't work :( buzzView.setLayoutParams(new AbsListView.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT))
• edwin: is it possible to cast a ImageView to FrameLayout??
• Thommy: You need to Implement all three constructor from superclass. Also don't extends directly from View, user RelativeLayout as superclass instead
• njzk2: there is a classcastexception in the code you posted

Answer 1

Try creating your BuzzView like this

public class CustomView {
private Context mContext;
private View mCustomView;
private LayoutInflater mInflater;
public CustomView(Context context) {
 // TODO Auto-generated constructor stub
 mContext = context;
 mInflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public View getView() {
 if(mCustomView==null) {
 mCustomView = mInflater.inflate(R.layout.customView, null);
 //initialize all the child here
 }
 return mCustomView;
}
}

while adding your view just call getView() method like this in your activity

CustomView mCustomView = new CustomView(MyActivity.this);
layout.addView(mCustomView.getView(), new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));