2012-08-13 66 views
1

我想顯示一個列表,當我在該位置按下它時,我想顯示一個不存在的圖像並更改該行的字體。所以首先我有一個簡單的列表中的XML文件,然後另一個XML的每一行,這一個:OnListIemClick爲每一行設置可見性

<ImageView 
    android:id="@+id/icono" 
    android:layout_gravity="center" 
    android:layout_marginRight="5dip"/> 

<RelativeLayout 
    android:id="@+id/RelativeLayout1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal" > 

    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentTop="true" 
     android:layout_centerVertical="true" 
     android:text="TextView" /> 

    <ImageView 
     android:id="@+id/image_tick_ingred" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="false" 
     android:layout_alignParentLeft="false" 
     android:layout_alignParentRight="true" 
     android:layout_alignParentTop="false" 
     android:layout_alignRight="@id/textView1" 
     android:layout_centerVertical="true" 
     android:src="@android:drawable/presence_online" /> 
</RelativeLayout> 

所以這是代碼的每一行,包含在左邊的圖像再文字,最後是右側的另一張圖片。和Java代碼:

public class TabIngred extends ListActivity { 

    ImageView img; 

public void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.rellenas_ingr); //the list xml layout 

     Bundle extras = getIntent().getExtras(); //get data 
     if (extras != null) { 
      String ingredientesLista[] = extras.getStringArray("ingredientesLista"); 
      int[] ingredientesImagen=extras.getIntArray("ingredientesImagen"); 

      setListAdapter (new IngredienteAdapter(this, R.layout.rellenas_ingr_fila, ingredientesLista, ingredientesImagen)); 
      getListView().setChoiceMode(2); 
     } 

} 

private class IngredienteAdapter extends ArrayAdapter<String>{ 

    private String listaIngred[]; 
    private int[] listaImagenes; 

    public IngredienteAdapter(Context context, int textViewResourceId, String ingredientesLista[], int[] ingredientesImagen) { 
     super(context, textViewResourceId, ingredientesLista); 
     this.listaIngred = ingredientesLista; 
     this.listaImagenes=ingredientesImagen; 
    } 

    public View getView(int position, View convertView, ViewGroup parent) { 
     View v = convertView; 
     if (v == null) { 
      LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      // XML de la vista de la fila 
      v = vi.inflate(R.layout.rellenas_ingr_fila, null); //the row for the listview 
     } 
     String ingred = listaIngred[position]; 
     int imagen=listaImagenes[position]; 
     int tickImagen = R.drawable.tick_ingred;//set the image to a tick 


     if (ingred != null) { 
      TextView ttitulo = (TextView) v.findViewById(R.id.textView1); 
      if (ttitulo != null) { 
       ttitulo.setText(ingred); 
      } 
      ImageView timagen = (ImageView) v.findViewById(R.id.icono); 
      if (timagen != null) { 
       timagen.setImageResource(imagen); 
      } 
      ImageView ttick = (ImageView) v.findViewById(R.id.image_tick_ingred); 
      if (ttick != null) { 
       ttick.setImageResource(tickImagen); 
       ttick.setVisibility(View.GONE); 
      } 
     } 
     return v; 
    } 
} 

@Override 
public void onListItemClick(ListView l, View v, int position, long id) { 

    img=(ImageView)v.findViewById(R.id.image_tick_ingred); 
    TextView t= (TextView)v.findViewById(R.id.textView1); 

    if(img.getVisibility()==View.GONE){ 

     t.setTypeface(null, Typeface.BOLD); 
     img.setVisibility(View.VISIBLE); 

    }else { 
     t.setTypeface(null, Typeface.NORMAL); 
     img.setVisibility(View.GONE); 

    } 
} 
} 

所以,我定義了getview(),我把走了(那作品)的圖像,但隨後的OnlistItemClick()doesn't工作。首先,當我選擇一個項目時,圖像不可見,除此之外,我按下第一行的位置是改變字體的位置,而不是我按下的項目。

謝謝:)

+0

圖像初始化消失了(我想要的),但是當我按下它並不可見 – Txispas 2012-08-19 18:50:46

回答

0

問題是我定義了getListView()。setChoiceMode(2);那是因爲它沒有工作,我刪除了該線,並完美無缺!

謝謝畢竟!

0

onListItemClick您需要使用View

例如:

img=(ImageView)findViewById(R.id.image_tick_ingred); 
TextView t= (TextView)findViewById(R.id.textView1); 

應該

img=(ImageView)v.findViewById(R.id.image_tick_ingred); 
TextView t= (TextView)v.findViewById(R.id.textView1); 

通知v即視圖點擊了

+0

嗨,我編輯上面的代碼,它修復的東西,但不是全部。如果我現在使用視圖,它可能會排我按OK!但它似乎理解視圖已經消失(loggicaly因爲我定義在getview中消失了),但是當我按下它時卻看不到(textview變爲粗體)。如果我再次按下文字不正常:( – Txispas 2012-08-13 17:47:18

+0

某人知道......圖像一直消失,當按下時它不會改變...... – Txispas 2012-08-14 13:01:14