Listview avec CursorAdapter personnalisé et

Question

J'ai essayé de créer ListView personnalisé avec des vues personnalisées.

Liste lente, certaines lignes en double, ne fonctionnent pas bien.

Je ne sais pas si le code est correct ou non.

Ceci est mon code:

public class ActDictionary extends Activity 
{ 

    private TextView searchBox; 
    private ListView wordsList; 
    private Cursor c; 

    private ActDictionary.CustomA wordListAdapter; 

    private boolean defaultLanguage; 

    private String TableIs; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) 
    { 
     // TODO: Implement this method 
     super.onCreate(savedInstanceState); 
     Wind.in(this); 
     setContentView(R.layout.act_dictionary); 

     searchBox=(TextView)findViewById(R.id.actdictionaryEditText1); 
     wordsList=(ListView)findViewById(R.id.act_dictionary_list); 
     defaultLanguage=true; 

     ((TextView)findViewById(R.id.actdictionaryTextView1)).setOnClickListener(new OnClickListener(){ 

       @Override 
       public void onClick(View p1) 
       { 
        defaultLanguage=!defaultLanguage; 
        setListData(); 
       } 
      }); 
     setListData(); 
    } 
    public void setListData(){ 
     if(defaultLanguage){ 
      ((TextView)findViewById(R.id.actdictionaryTextView1)).setText("Franch >> English"); 
      c=Dictionary.in(this).database("dictionary.db").codes().__get_all_rows("fr2en"); 
      c.moveToFirst(); 
      TableIs="fr2en"; 
      loaddata(); 
     }else{ 
      ((TextView)findViewById(R.id.actdictionaryTextView1)).setText("English >> Franch"); 
      c=Dictionary.in(this).database("dictionary.db").codes().__get_all_rows("en2fr"); 
      c.moveToFirst(); 
      TableIs="en2fr"; 
      loaddata(); 
     } 
     //String from[] ={"a","b"}; 
     //int to[]={R.id.dictionaryrawTextView1,R.id.dictionaryrawTextView2}; 

    } 
    public void loaddata(){ 
     wordListAdapter=new CustomA(this,c,TableIs);//R.layout.dictionary_raw,c,from,to); 

     wordsList.setAdapter(wordListAdapter); 
     searchBox.addTextChangedListener(new TextWatcher(){ 

       @Override 
       public void beforeTextChanged(CharSequence p1, int p2, int p3, int p4) 
       { 
        // TODO: Implement this method 
       } 

       @Override 
       public void onTextChanged(CharSequence p1, int p2, int p3, int p4) 
       { 
        wordListAdapter.notifyDataSetChanged(); 
        wordListAdapter.getFilter().filter(p1); 
       } 

       @Override 
       public void afterTextChanged(Editable p1) 
       { 

       } 
      }); 
     wordListAdapter.setFilterQueryProvider(new FilterQueryProvider(){ 

       @Override 
       public Cursor runQuery(CharSequence p1) 
       { 
        String str=p1.toString(); 
        if(defaultLanguage){ 
         return Dictionary.in(getBaseContext()).database("dictionary.db").codes().__get_all_rows("fr2en",str+"%"); 
        } 
        return Dictionary.in(getBaseContext()).database("dictionary.db").codes().__get_all_rows("en2fr",str+"%"); 
       } 
      }); 
    } 





public class CustomA extends CursorAdapter 
    { 

     private LayoutInflater inflater; 

     private Context mctx; 

     private Cursor mcu; 

     private boolean starIs; 

     private String table; 

     @Override 
     public View newView(Context p1, Cursor p2, ViewGroup p3) 
     { 
      // TODO: Implement this method 
      return null; 
     } 

     @Override 
     public void bindView(View p1, Context p2, Cursor p3) 
     { 

     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) 
     { 
      convertView=null; 
      View v=inflater.inflate(R.layout.dictionary_raw,parent,false); 
      //LinearLayout l=(LinearLayout)v.findViewById(R.id.dictionaryrawLinearLayout1); 
      WrapLayout l=(WrapLayout)v.findViewById(R.id.flow_layout); 
      TextView tv=(TextView)v.findViewById(R.id.dictionaryrawTextView1); 
      final ImageView img=(ImageView)v.findViewById(R.id.star); 
      tv.setText(getCursor().getString(getCursor().getColumnIndex("value1"))); 
      String temp=getCursor().getString(getCursor().getColumnIndex("value2")); 
      final String star=Dictionary.in(getBaseContext()).database("dictionary.db").codes().___getStar(table,getCursor().getString(getCursor().getColumnIndex("_id")));//mcu.getString(getCursor().getColumnIndex("value4")); 
      String values[]=temp.split(",|\\;"); 
      if(star.equals("0")){ 
       img.setImageResource(R.drawable.ic_star_off); 
      }else{ 
       img.setImageResource(R.drawable.ic_star_on); 

      } 
      String color[]={"#123232","#544344","#774499","#330088","#546789","#223322"}; 
      TextView[] textView=new TextView[values.length]; 
      for (int i=0;i<values.length;i++){ 
       textView[i]=new TextView(getBaseContext()); 
       textView[i].setText(values[i]); 
       textView[i].setTextColor(Color.WHITE); 

       textView[i].setBackgroundResource(R.drawable.button); 
       l.addView(textView[i]); 
      } 
      //final ImageView button01 = (ImageView) findViewById(R.id.button01); 
      final int cc=getCursor().getInt(getCursor().getColumnIndex("_id")); 
      img.setOnClickListener(new OnClickListener() { 
        int button01pos = Integer.parseInt(star); 
        public void onClick(View v) { 
         if (button01pos == 0) { 
          img.setImageResource(R.drawable.ic_star_on); 
          button01pos = 1; 
          Dictionary.in(getBaseContext()).database("dictionary.db").codes().___upadteValue(table,"1",cc); 

          Toast.makeText(getBaseContext(),""+cc,1).show(); 
         } else if (button01pos == 1) { 
          img.setImageResource(R.drawable.ic_star_off); 
          button01pos = 0; 

          Dictionary.in(getBaseContext()).database("dictionary.db").codes().___upadteValue(table,"0",cc); 
         } 
        } 
       }); 
      return v; 

     } 




public CustomA(Context ctx,Cursor cu,String c){ 
      super(ctx,cu); 
      mctx=ctx; 
      mcu=cu; 
      table=c; 
      inflater=LayoutInflater.from(ctx); 
     } 
    } 
} 

et base de données est

public class Codes 
{ 

    private SQLiteDatabase mDb; 

    public Codes(SQLiteDatabase db) 
    { 
     this.mDb = db; 
    } 

    public String ___getStar(String table, String string) 
    { 
     Cursor c= mDb.rawQuery("SELECT value4 from "+table+" WHERE _id = ? ",new String[]{string}); 
     c.moveToFirst(); 
     return c.getString(c.getColumnIndex("value4")); 
    } 

    public Cursor __get_all_rows_star(String table){ 
     return mDb.rawQuery("select * from "+table+" where value4 ='1'",null); 
    } 
    public Cursor __get_all_rows_star(String tableName,String args){ 
     return mDb.rawQuery("select * from "+tableName+" where value1 like ? ORDER BY value1 COLLATE NOCASE LIMIT 50",new String[]{args}); 
    } 
    public void ___upadteValue(String table, String value,int id){ 
     mDb.execSQL("UPDATE "+table+" SET value4 = '"+value+"' WHERE _id = "+id); 
     System.err.println("UPDATE "+table+" SET value4 = "+value+" WHERE _id = "+id); 
    } 
    public Cursor __get_all_rows(String tableName){ 
     return mDb.rawQuery("select * from "+tableName+" ORDER BY RANDOM() LIMIT 100",null); 
    } 
    public Cursor __get_all_rows(String tableName,String args){ 
     return mDb.rawQuery("select * from "+tableName+" where value1 like ? ORDER BY value1 COLLATE NOCASE LIMIT 50",new String[]{args}); 
    } 


    public Cursor test(){ 
     return mDb.rawQuery("select * from fr2en where value4= ?",new String[]{"1"}); 
    } 
} 

Answer 1

Utilisez ViewHolder modèle pour votre adaptateur. Vérifiez ce lien Custom Adapter

Voir la section 9.5 du lien