リストビューの行をカスタマイズする方法

Question

私は名前リストを持っており、名前が始まる文字に応じて色を行に変更したいと考えています。これは私がリストビューを表示するために使用しているものです：

main.xml

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

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

</LinearLayout> 

lisviewrows.xml

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

main.java

public class Main extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     List<String> words = populateList(); 
     List<String> l = removeDoubles(words); 
     Collections.sort(l); 

     ListView lv = (ListView)findViewById(R.id.listview); 

     ArrayAdapter<String> adapter = new ArrayAdapter<String>(getApplicationContext(), R.layout.listviewrows, l); 

     lv.setAdapter(adapter); 

     lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { 

      } 
     }); 
    } 

私に提供することができる有用なリンクはありますか？

ありがとうございます！

Answer 1

これを行うには、独自のカスタムアダプターを作成する必要があります。 getViewメソッド（各リスト項目に表示するビューを返す）では、TextViewの背景に必要な色を適用します。 あなたがTextViewsに制限されていないため、リスト項目のXMLレイアウトを任意の種類のビュー/レイアウトに変更することができるので、あなたは何かを絶対に行うことができます。 ..

このような何か：

MyAdapter.java

public class MyAdapter extends BaseAdapter{ 
    private LayoutInflater inflater; 
    private ArrayList<String> data; 

    public MyAdapter(Context context, ArrayList<String> data){ 
    // Caches the LayoutInflater for quicker use 
    this.inflater = LayoutInflater.from(context); 
    // Sets the events data 
    this.data= data; 
    } 

    public int getCount() { 
     return this.data.size(); 
    } 

    public String getItem(int position) throws IndexOutOfBoundsException{ 
     return this.data.get(position); 
    } 

    public long getItemId(int position) throws IndexOutOfBoundsException{ 
     if(position < getCount() && position >= 0){ 
      return position; 
     } 
    } 

    public int getViewTypeCount(){ 
     return 1; 
    } 

    public View getView(int position, View convertView, ViewGroup parent){ 
     String myText = getItem(position);   

     if(convertView == null){ // If the View is not cached 
      // Inflates the Common View from XML file 
      convertView = this.inflater.inflate(R.id.my_row_layout, null); 
     } 

     // Select your color and apply it to your textview 
     int myColor; 
     if(myText.substring(0, 1) == "a"){ 
      myColor = Color.BLACK; 
     }else{ 
     .... 
     } 

     convertView.findViewById(R.id.myTextViewId).setBackground(myColor); 
     // Of course you will need to set the same ID in your item list XML layout. 

     return convertView; 
    } 
} 

してからの活動では、このようにアダプタを設定します。

public class Main extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     List<String> words = populateList(); 
     List<String> l = removeDoubles(words); 
     Collections.sort(l); 

     ListView lv = (ListView)findViewById(R.id.listview); 

     MyAdapter adapter = new MyAdapter(getApplicationContext(), l); 

     lv.setAdapter(adapter); 

     lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { 

      } 
     }); 
    } 

Answer 2

あなたの問題は、関数setTextのパラメータとして、数値（int）であり、文字列ではないということです。そのため、代わりに：

holder.text2.setText(words.indexOf(position)); 

これを試してみてください：

holder.text2.setText("" + words.indexOf(position)); 

幸運を！

Answer 3

MainActivity: 

    import java.util.ArrayList; 

     import android.app.Activity; 
     import android.content.Intent; 
     import android.content.SharedPreferences; 
     import android.content.SharedPreferences.Editor; 
     import android.os.Bundle; 
     import android.view.View; 
     import android.widget.Adapter; 
     import android.widget.AdapterView; 
     import android.widget.AdapterView.OnItemClickListener; 
     import android.widget.ListView; 

     public class ListViewImagesActivity extends Activity { 
      ListView list; 
      public Integer[] mgriArray = { R.drawable.angry0, R.drawable.neutral0, 
        R.drawable.fblack0, R.drawable.misc0, R.drawable.notok0, 
        R.drawable.panel011, R.drawable.pleasure0, R.drawable.rage0, 
        R.drawable.sad0, R.drawable.stupidity0, R.drawable.sa0, 
        R.drawable.tree0, R.drawable.victorious0,R.drawable.image_53, 
        R.drawable.image_13 

      }; 
      ArrayList<ItemDetails> image_details; 
      Adapter griAdapter; 

      public static SharedPreferences pref; 
      static Editor editor; 

      @Override 
      protected void onCreate(Bundle savedInstanceState) { 
       super.onCreate(savedInstanceState); 
       setContentView(R.layout.activity_main); 

       pref = getSharedPreferences("share", 0); 
        editor = pref.edit(); 
       list = (ListView) findViewById(R.id.listV_main); 

       image_details = GetSearchResults3(); 
       list.setAdapter(new ItemListBaseAdapter(this, image_details, mgriArray)); 
       list.setOnItemClickListener(new OnItemClickListener() { 
        @Override 
        public void onItemClick(AdapterView<?> parent, View v, 
          int position, long id) { 
         Object o = list.getItemAtPosition(position); 
         ItemDetails obj_itemDetails = (ItemDetails) o; 

         String namee = obj_itemDetails.getName(); 
          editor.putString("name", namee); 

          // commit changes 
          editor.commit(); 

         // switch.................. 

         switch (position) { 
         case 0: 
          Intent i1 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity.class); 
          startActivity(i1); 
          break; 
         case 1: 
          Intent i2 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity2.class); 
          startActivity(i2); 
          break; 
         case 2: 
          Intent i3 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity3.class); 
          startActivity(i3); 
          break; 
         case 3: 
          Intent i4 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity4.class); 
          startActivity(i4); 
          break; 
         case 4: 
          Intent i5 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity5.class); 
          startActivity(i5); 
          break; 
         case 5: 
          Intent i6 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity6.class); 
          startActivity(i6); 
          break; 
         case 6: 
          Intent i7 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity7.class); 
          startActivity(i7); 
          break; 
         case 7: 
          Intent i8 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity8.class); 
          startActivity(i8); 
          break; 
         case 8: 
          Intent i9 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity9.class); 
          startActivity(i9); 
          break; 
         case 9: 
          Intent i10 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity10.class); 
          startActivity(i10); 
          break; 
         case 10: 
          Intent i11 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity11.class); 
          startActivity(i11); 
          break; 
         case 11: 
          Intent i12 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity12.class); 
          startActivity(i12); 
          break; 
         case 12: 
          Intent i13 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity13.class); 
          startActivity(i13); 
          break; 
         case 13: 
          Intent i14 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity14.class); 
          startActivity(i14); 
          break; 
         case 14: 
          Intent i15 = new Intent(ListViewImagesActivity.this, 
            AndroidGridLayoutActivity15.class); 
          startActivity(i15); 
          break; 

         } 

         // ending......... 

        } 
       }); 
      } 

      // ............................... 

      public ArrayList<ItemDetails> GetSearchResults3() { 
       // TODO Auto-generated method stub 
       ArrayList<ItemDetails> results = new ArrayList<ItemDetails>(); 

       ItemDetails item_details = new ItemDetails(); 

       item_details.setName("ANGRY"); 
       item_details.setImageNumber(1); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("NEUTRAL"); 
       item_details.setImageNumber(2); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("FEMALE"); 
       item_details.setImageNumber(3); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("MISC"); 
       item_details.setImageNumber(4); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("NOTOK"); 
       item_details.setImageNumber(5); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("PANEL"); 
       item_details.setImageNumber(6); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("PLEASURE"); 
       item_details.setImageNumber(7); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("RAGE"); 
       item_details.setImageNumber(8); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("SAD"); 
       item_details.setImageNumber(9); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("STUPIDITY"); 
       item_details.setImageNumber(10); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("SURPRISED "); 
       item_details.setImageNumber(11); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("TREES"); 
       item_details.setImageNumber(12); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("VICTORIOUS"); 
       item_details.setImageNumber(13); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("LUCKY BEAR"); 
       item_details.setImageNumber(14); 
       results.add(item_details); 

       item_details = new ItemDetails(); 
       item_details.setName("LUCKY CHARM"); 
       item_details.setImageNumber(15); 
       results.add(item_details); 

       return results; 
      } 
     } 



    Adapter Class... 

    public class ItemListBaseAdapter extends BaseAdapter { 
     private static ArrayList<ItemDetails> itemDetailsrrayList; 
     private Integer[] imgid; 

     public static ArrayList<ItemDetails> results; 

     private LayoutInflater l_Inflater; 

     public ItemListBaseAdapter(Context context, ArrayList<ItemDetails> results, 
       Integer[] imgid) { 
      itemDetailsrrayList = results; 
      l_Inflater = LayoutInflater.from(context); 
      this.imgid = imgid; 
     } 

     public int getCount() { 
      return itemDetailsrrayList.size(); 
     } 

     public Object getItem(int position) { 
      return itemDetailsrrayList.get(position); 
     } 

     public long getItemId(int position) { 
      return position; 
     } 

     public View getView(int position, View convertView, ViewGroup parent) { 
      ViewHolder holder; 
      ImageView imageView = null; 
      if (convertView == null) { 
       convertView = l_Inflater.inflate(R.layout.category, null); 
       holder = new ViewHolder(); 
       holder.txt_itemName = (TextView) convertView.findViewById(R.id.name); 
       holder.itemImage = (ImageView) convertView.findViewById(R.id.photo); 

       convertView.setTag(holder); 
      } else { 
       holder = (ViewHolder) convertView.getTag(); 
      } 


      holder.txt_itemName.setText(itemDetailsrrayList.get(position).getName()); 
      holder.itemImage.setImageResource(imgid[itemDetailsrrayList.get(
        position).getImageNumber() - 1]); 


      return convertView; 
     } 

     static class ViewHolder { 
      TextView txt_itemName; 
      ImageView itemImage; 

     } 
    } 

XML ListView here...... 

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/rel1" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:background="#ffffff" > 


    <RelativeLayout 
     android:id="@+id/navi_b" 
     android:layout_width="fill_parent" 
     android:layout_height="65dp" 
     android:layout_alignParentTop="true" 
     android:background="@drawable/navigation" > 

     <TextView 
      android:id="@+id/textView1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_centerHorizontal="true" 
      android:layout_centerVertical="true" 
      android:textColor="#000000" 
      android:text="Albums" 
      android:textAppearance="?android:attr/textAppearanceLarge" /> 

    </RelativeLayout> 

    <RelativeLayout 
     android:id="@+id/navi_l" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:layout_above="@+id/navigation1" 
     android:layout_below="@+id/navi_b" 
     android:background="@drawable/bg">" 

     <ListView 
      android:id="@+id/listV_main" 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent" 
      android:layout_below="@+id/navi_b" 
      android:layout_above="@+id/navigation1" 
      android:layout_alignParentBottom="true" > 
     </ListView> 
    </RelativeLayout> 

    <RelativeLayout 
     android:id="@+id/navigation1" 
     android:layout_width="fill_parent" 
     android:layout_height="60dp" 
     android:layout_alignParentBottom="true" 
     android:background="#ffffff" > 

     <include 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignParentBottom="true" 
      android:layout_alignParentLeft="true" 
      layout="@layout/tabb" /> 

    </RelativeLayout> 

</RelativeLayout>