Ich versuche, eine Rasteransicht zu erstellen, in die die URL geladen wird. Ich kann es in MainActivity zum Laufen bringen, aber wenn ich meinen Code in Gridview einfüge. Das Bild wird nicht angezeigt.

Hier ist mein Code auf Fragment

public static String[] eatFoodyImages = {
        "http://image.tmdb.org/t/p/w185//nBNZadXqJSdt05SHLqgT0HuC5Gm.jpg",
        "http://i.imgur.com/C9pBVt7.jpg",
};

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.fragment_main, container, false);
    // Inflate the layout for this fragment

    GridView gridview = (GridView) rootView.findViewById(R.id.gridview);
    gridview.setAdapter(new ImageListAdapter(getActivity(), eatFoodyImages));

    return inflater.inflate(R.layout.fragment_main, container, false);
}

Activity_main.xml

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/fragment"
android:name="com.example.android.movie.MainFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout="@layout/fragment_main" />

Fragment_main_xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.android.movie.MainFragment">

<GridView
    android:id="@+id/gridview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:adjustViewBounds="true"
    android:horizontalSpacing="0dp"
    android:numColumns="2"
    android:stretchMode="columnWidth"
    android:verticalSpacing="0dp" />

Image_view.xml

<?xml version="1.0" encoding="utf-8"?>
<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/list_item_movie"
android:layout_width="match_parent"
android:layout_height="200dp">

ImageListAdapter:

public class ImageListAdapter extends ArrayAdapter {
private Context context;
private LayoutInflater inflater;

private String[] imageUrls;

public ImageListAdapter(Context context, String[] imageUrls) {
    super(context, R.layout.image_view, imageUrls);

    this.context = context;
    this.imageUrls = imageUrls;

    inflater = LayoutInflater.from(context);
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    if (null == convertView) {
        convertView = inflater.inflate(R.layout.image_view, parent, false);
    }

    Picasso
            .with(context)
            .load(imageUrls[position])
            .fit() // will explain later
            .into((ImageView) convertView);

    return convertView;
}
}