如何自定义listview行android
我有一个名单，我想改变颜色的行取决于名称开头的字母。 这是我用来显示ListView的：
main.xml中
<?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) { } }); }
有一些有用的链接，你可以提供给我或一些例子？
谢谢！！
为此，您将需要创build自己的自定义适配器。 在getView方法（它返回每个列表项的显示视图），将你想要的颜色应用到你的TextView的背景。 关于customAdapter的很酷的事情是，你可以做任何事情，并为列表项目显示更复杂的视图，因为你不再受限于TextViews，你可以将列表项目XML布局更改为任何types的视图/布局。 。
像这样的东西：
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; } }
然后在你的活动中设置这样的适配器：
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) { } }); }
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>
你的问题是，你正在发送一个参数给函数setText ，一个数字（int）而不是一个string。 因此，而不是：
holder.text2.setText(words.indexOf(position));
尝试这个：
holder.text2.setText("" + words.indexOf(position));
祝你好运！
