android listview et couleur de fond

Question

de salut je utilise XML suivant comme mon arrière-plan customlistview

quand je suis cliquez sur un élément, il mettra en évidence mais il ne persistera, il crée seulement un effet cliquable, je veux être souligner un élément particulier dans la vue de liste lorsque vous cliquez sur

<?xml version="1.0" encoding="utf-8"?> 

<selector 
xmlns:android="http://schemas.android.com/apk/res/android"> 

<!--ON FOCUS --> 

<item 
android:state_focused="true" 
android:state_pressed="false" 
android:drawable="@@drawable/appcategoryselectedimg" /> 

<!--ON CLICK--> 

<item 
android:state_focused="true" 
android:state_pressed="true" 
android:drawable="@@drawable/appcategoryselectedimg" /> 

<!--long touch and simple touch and release--> 
<item 
android:state_focused="false" 
android:state_pressed="true" 
android:drawable="@@drawable/appcategoryselectedimg" /> 

<!--Default --> 
<item 
android:drawable="@color/transperent" /> 
</selector> 

Answer 1

Parce que vous faites un simple clic. Ce dont vous avez besoin est de définir drawable pour state_selected et setSelected(true) lorsque l'utilisateur clique sur un élément.

Answer 2

s'il vous plaît consulter le code suivant pour l'exemple d'activité ListViewGeneralSampleProjectActivity.java

public class ListViewGeneralSampleProjectActivity extends Activity { 
    private ListView sampleListView; 
    private static int save = -1; 
    int pos = 0; 
    MySimpleArrayAdapter adapter; 
    /** Called when the activity is first created. */ 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     String[] values = new String[] { "Android", "iPhone", "WindowsMobile", 
       "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X", 
       "Linux", "OS/2","hai","Android", "iPhone", "WindowsMobile", 
       "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X", 
       "Linux", "OS/2","hai","OS/2","hai", "Ubuntu", "Windows7", "Max OS X", 
       "Linux", "OS/2","hai","OS/2","hai" }; 
     sampleListView=(ListView) findViewById(R.id.listView1); 
     adapter = new MySimpleArrayAdapter(this, values); 

     sampleListView.setAdapter(adapter); 
     sampleListView.setOnItemClickListener(new OnItemClickListener() { 
      public void onItemClick(AdapterView<?> parent, View view, 
        int position, long id) { 
       // When clicked, show a toast with the TextView text 
       Toast.makeText(getApplicationContext(),position+" Pressed", Toast.LENGTH_SHORT).show(); 
       adapter.setCurrent(position); 
       adapter.notifyDataSetChanged(); 

      } 
     }); 

    } 

} 


MySimpleArrayAdapter.java 

public class MySimpleArrayAdapter extends ArrayAdapter<String> { 
    private final Context context; 
    private final String[] values; 
    private int selected=0; 

    public MySimpleArrayAdapter(Context context, String[] values) { 
     super(context, R.layout.rowlayout, values); 
     this.context = context; 
     this.values = values; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     LayoutInflater inflater = (LayoutInflater) context 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     View rowView = inflater.inflate(R.layout.rowlayout, parent, false); 
     TextView textView = (TextView) rowView.findViewById(R.id.textView1); 

     textView.setText(values[position]); 
     if(position==selected) 
     { 
      rowView.setBackgroundColor(Color.RED); 
     } 

     return rowView; 
    } 

    public void setCurrent(int position) { 
     // TODO Auto-generated method stub 
     this.selected=position; 
    } 
} 

main.xml 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" > 

    <ListView 
     android:id="@+id/listView1" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" > 
    </ListView> 

</LinearLayout> 

rowlayout.xml 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" > 

    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Large Text" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

</LinearLayout>