Mam taki problem, że napisałam klasę bazującą na base adapter i chciałabym w gridzie wyświetlić obrazki. Niestety mam tylko białą plamę.
public class ImageAdapter extends BaseAdapter {
private Context context;
int[] imageId = {
R.drawable.add
};
private LayoutInflater layoutInflator;
//Constructor to initialize values
public ImageAdapter(Context context) {
this.context = context;
layoutInflator = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// Number of times getView method call depends upon gridValues.length
return 0;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
// Number of times getView method call depends upon gridValues.length
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View grid;
if (convertView == null) {
grid = new View(context);
grid = layoutInflator.inflate(R.layout.grid_item, null);
// TextView textView = (TextView) grid.findViewById(R.id.grid_text);
ImageView imageView = (ImageView)grid.findViewById(R.id.imageView);
//textView.setText(web[position]);
imageView.setImageResource(imageId[position]);
} else {
grid = (View) convertView;
}
return grid;
}
W taki sposób wywołuje:
GridView gridview = (GridView) findViewById(R.id.gridView);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(LookAtProducts.this, "You Clicked at ", Toast.LENGTH_SHORT).show();
}
});
Tak wygląda xml aktywności w której wywołuje Adapter:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="@+id/text" />
<GridView
android:id="@+id/gridView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:columnWidth="100dp"
android:drawSelectorOnTop="true"
android:gravity="center"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:verticalSpacing="5dp"
android:focusable="true"
android:clickable="true"/>
</LinearLayout>
a tak grid_item.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView" />
</LinearLayout>
Any idea dlaczego nie wyświetla mi się obrazek w gridview?
Solved: Zapomniałam dać:return imageId.length; w getCount