Android - Eine Karte Artikel in gridview wird zweimal wiederholt

Question

ListAdapter.java

public class ListAdapter extends ArrayAdapter<String> 
{ 
    private Activity context; 
    private int[] icon; 
    private String[] title; 

    public ListAdapter(Activity context, int[] icon, String[] title) 
    { 
    super(context, R.layout.list_item, title); 
    this.context = context; 
    this.icon = icon; 
    this.title = title; 
    } 

    public View getView(final int position, View view, final ViewGroup parent) 
    { 
    LayoutInflater inflater = context.getLayoutInflater(); 
    View rowView = inflater.inflate(R.layout.list_item, null, true); 
    try 
    { 
     TextView txtTitle = (TextView) rowView.findViewById(R.id.txtTitle); 
     ImageView imgIcon = (ImageView) rowView.findViewById(R.id.imgIcon); 
     txtTitle.setText(title[position]); 
     imgIcon.setBackgroundResource(icon[position]); 
    } 
    catch (Exception e) 
    { 
     e.printStackTrace(); 
    } 
    finally 
    { 
     return rowView; 
    } 
}} 

MainActivity.java
in dieser Karte Events mit Dienstleistungen ersetzt. Wenn ich die Positionen neu mische, werden die Änderungen in der App angezeigt, aber wenn ich die App erneut starte, wird die Galerie durch Dienste ersetzt.

public class MainActivity extends AppCompatActivity 
{ 
    String[] title = { 
     "Services" , 
     "Solutions", 
     "Customers", 
     "Events", 
     "Gallery", 
     "Contact Us" 
    }; 

int[] icon = { 
     R.drawable.services_icon, 
     R.drawable.solution_icon, 
     R.drawable.customer_icon, 
     R.drawable.event_icon, 
     R.drawable.gallery_icon, 
     R.drawable.contact_us_icon 
}; 

    HomeGrid adapter = new HomeGrid(MainActivity.this, title, icon, back); 
    grid = (GridView) findViewById(R.id.grid); 
    grid.setAdapter(adapter); 
    grid.setOnItemClickListener(new AdapterView.OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> parent, View view, 
           int position, long id) { 

      switch (title[position]) { 
       case "Services": 
        Intent i1 = new Intent(MainActivity.this, Listing.class); 
        startActivity(i1); 
        break; 
       case "Solutions": 
        //Intent i2 = new Intent(MainActivity.this, Listing.class); 
        //startActivity(i2); 
        Toast.makeText(MainActivity.this, "You Clicked at " + title[position], Toast.LENGTH_SHORT).show(); 
        break; 
       case "Customers": 
        Toast.makeText(MainActivity.this, "You Clicked at " + title[position], Toast.LENGTH_SHORT).show(); 
        break; 
       case "Gallery": 
        Toast.makeText(MainActivity.this, "You Clicked at " + title[position], Toast.LENGTH_SHORT).show(); 
        break; 
       case "Events": 
        Intent i3 = new Intent(MainActivity.this, Form.class); 
        startActivity(i3); 
        break; 
       case "Contact Us": 
        Toast.makeText(MainActivity.this, "You Clicked at " + title[position], Toast.LENGTH_SHORT).show(); 
        break; 
     } 
     } 
    }); 
} 

Answer 1

Verwenden Sie dies.

public class ListAdapter extends ArrayAdapter<String>{ 
    private Activity context; 
    private int[] icon; 
    private String[] title; 
    private LayoutInflater inflater; 
    public ListAdapter(Activity context, int[] icon, String[] title) 
    { 
     super(context, R.layout.list_item, title); 
     this.context = context; 
     this.icon = icon; 
     this.title = title; 
     inflater = LayoutInflater.from(context); 
} 
public View getView(final int position, View view, final ViewGroup parent) 
{ 
    view= inflater.inflate(R.layout.list_item, parent, false); 
    try 
    { 
    TextView txtTitle = (TextView) view.findViewById(R.id.txtTitle); 
    ImageView imgIcon = (ImageView) view.findViewById(R.id.imgIcon); 
    txtTitle.setText(title[position]); 
    imgIcon.setBackgroundResource(icon[position]); 
    } 
    catch (Exception e) 
    { 
    e.printStackTrace(); 
    } 
finally 
{ 
    return view; 
    } 
} 
}