如何在Android中为自定义列表视图添加适配器中的项目？

Question

我在我的HashMap中有一些小时和分钟。我的代码是在这里http://pastie.org/8394598 和我的输出是这样

但是我预期的输出是

如何添加这种类型的哈希映射与我的自定义列表视图？我哪里错了？有人可以告诉我吗？提前致谢。

Answer 1

通过扩展SimpleAdapter类来创建自定义适配器。这里是一个例子：http://dustinbreese.blogspot.com/2009/12/creating-listview-with-alternating.html

Answer 2

// try this 

**activity.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="wrap_content" 
     android:descendantFocusability="blocksDescendants"> 

    <ListView 
      android:id="@+id/lst" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:cacheColorHint="#00000000" 
      android:divider="@null" 
      android:dividerHeight="0dp" 
      android:smoothScrollbar="true"/> 
</LinearLayout> 

**list_item.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="wrap_content" 
       android:padding="5dp"> 

    <LinearLayout 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent" 
     android:gravity="center" 
     android:padding="20dp" 
      android:background="@android:color/holo_orange_dark"> 

     <TextView 
       android:id="@+id/txtHours" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:textColor="@android:color/white" 
       android:textSize="30sp" 
       android:text="12 PM"/> 

     </LinearLayout> 
    <LinearLayout 
      android:layout_width="0dp" 
      android:layout_height="match_parent" 
      android:gravity="center_vertical" 
      android:layout_weight="1" 
      android:padding="20dp" 
      android:background="@android:color/holo_orange_light"> 
    <TextView 
      android:id="@+id/txtMinute" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:textColor="@android:color/white" 
      android:textSize="20sp" 
      android:text="32"/> 

    <TextView 
      android:id="@+id/txtSecond" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="10dp" 
      android:textColor="@android:color/white" 
      android:textSize="20sp" 
      android:text="30"/> 
     </LinearLayout> 
</LinearLayout> 

**MainActivity** 
public class MainActivity extends Activity { 

    private ListView lst; 
    private CustomAdapter adapter; 
    ArrayList<HashMap<String,String>> data; 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     lst = (ListView) findViewById(R.id.lst); 

     data = new ArrayList<HashMap<String, String>>(); 
     HashMap<String,String> row1 = new HashMap<String, String>(); 
     row1.put("hours","12 PM"); 
     row1.put("minute","30"); 
     row1.put("second","45"); 
     HashMap<String,String> row2 = new HashMap<String, String>(); 
     row2.put("hours","01 PM"); 
     row2.put("minute","31"); 
     row2.put("second","46"); 
     HashMap<String,String> row3 = new HashMap<String, String>(); 
     row3.put("hours","02 PM"); 
     row3.put("minute","32"); 
     row3.put("second","47"); 
     HashMap<String,String> row4 = new HashMap<String, String>(); 
     row4.put("hours","03 PM"); 
     row4.put("minute","33"); 
     row4.put("second","48"); 
     HashMap<String,String> row5 = new HashMap<String, String>(); 
     row5.put("hours","04 PM"); 
     row5.put("minute","34"); 
     row5.put("second","49"); 
     data.add(row1); 
     data.add(row2); 
     data.add(row3); 
     data.add(row4); 
     data.add(row5); 

     adapter = new CustomAdapter(this,data); 
     lst.setAdapter(adapter); 

     lst.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> adapterView, View view, int pos, long l) { 
       Toast.makeText(MainActivity.this,data.get(pos).get("hours")+":"+data.get(pos).get("minute")+":"+data.get(pos).get("second"),Toast.LENGTH_LONG).show(); 
      } 
     }); 

    } 

    class CustomAdapter extends BaseAdapter { 

     Context context; 
     ArrayList<HashMap<String,String>> data; 

     public CustomAdapter(Context context, ArrayList<HashMap<String,String>> data){ 

      this.context = context; 
      this.data = data; 
     } 

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

     @Override 
     public Object getItem(int pos) { 
      return data.get(pos); 
     } 

     @Override 
     public long getItemId(int pos) { 
      return pos; 
     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      ViewHolder holder; 
      if(convertView==null){ 
       holder = new ViewHolder(); 
       convertView = LayoutInflater.from(context).inflate(R.layout.list_item,null,false); 
       holder.txtHours = (TextView) convertView.findViewById(R.id.txtHours); 
       holder.txtMinute = (TextView) convertView.findViewById(R.id.txtMinute); 
       holder.txtSecond = (TextView) convertView.findViewById(R.id.txtSecond); 
       convertView.setTag(holder); 
      }else{ 
       holder = (ViewHolder) convertView.getTag(); 
      } 

      holder.txtHours.setText(data.get(position).get("hours")); 
      holder.txtMinute.setText(data.get(position).get("minute")); 
      holder.txtSecond.setText(data.get(position).get("second")); 

      convertView.setTag(holder); 
      return convertView; 
     } 

     class ViewHolder { 
      TextView txtHours; 
      TextView txtMinute; 
      TextView txtSecond; 
     } 

    } 
} 

![enter image description here][1] 


    [1]: http://i.stack.imgur.com/cB2yI.png