如何从JSON阵列

Question

数据加载到自定义列表视图我已加载数据到正常的列表视图从JSON数组这样

JSONArray jArray = new JSONArray(result);  
final String[] array_spinner = new String[jArray.length()]; 
for(int i=0;i<jArray.length();i++){ 
    JSONObject json_data = jArray.getJSONObject(i); 
    String jj=json_data.getString("f_name"); 
    array_spinner[i] = jj; 
} 
ArrayAdapter<String> adapter = new ArrayAdapter<String> (this, android.R.layout.simple_list_item_1,array_spinner); adapter.setDropDownViewResource(android.R.layout.simple_list_item_1); 
//adapter.setDropDownViewResource(R.layout.spinner_layout); 
list.setAdapter(adapter); 

我想将数据加载到自定义列表视图。 我的自定义列表视图的XML文件是这样的 receiver.xml

如何从JSON加载数据到自定义列表视图？

Answer 1

• 创建延伸BaseAdpter或ArrayAdpter定制适配器并通过阵列或ArrayList的在构造
• 在
• （列）的布局创建视图充气此xml在定制适配器的getView功能，并设置数据

如

http://www.josecgomez.com/2010/05/03/android-putting-custom-objects-in-listview/

Populate Listview from JSON

你跟我混既能让你明白......

活动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="wrap_content" 
    > 
<ListView 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:id="@+id/lstText" 
    /> 
</LinearLayout> 

列表行XML（布局row.xml）

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

     <TextView 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/txtAlertText" /> 

    </LinearLayout> 
</LinearLayout> 

您适配器类

class JSONAdapter extends BaseAdapter implements ListAdapter { 

    private final Activity activity; 
    private final JSONArray jsonArray; 
    private JSONAdapter (Activity activity, JSONArray jsonArray) { 
     assert activity != null; 
     assert jsonArray != null; 

     this.jsonArray = jsonArray; 
     this.activity = activity; 
    } 


    @Override public int getCount() { 
     if(null==jsonArray) 
     return 0; 
     else 
     return jsonArray.length(); 
    } 

    @Override public JSONObject getItem(int position) { 
     if(null==jsonArray) return null; 
     else 
      return jsonArray.optJSONObject(position); 
    } 

    @Override public long getItemId(int position) { 
     JSONObject jsonObject = getItem(position); 

     return jsonObject.optLong("id"); 
    } 

    @Override public View getView(int position, View convertView, ViewGroup parent) { 
     if (convertView == null) 
      convertView = activity.getLayoutInflater().inflate(R.layout.row, null); 



     TextView text =(TextView)convertView.findViewById(R.id.txtAlertText); 

        JSONObject json_data = getItem(position); 
        if(null!=json_data){ 
        String jj=json_data.getString("f_name"); 
        text.setText(jj); 
        } 

     return convertView; 
    } 
} 

您activty

public class main extends Activity { 
    /** Called when the activity is first created. */ 

    ListView lstTest; 
    //Array Adapter that will hold our ArrayList and display the items on the ListView 
    JSONAdapter jSONAdapter ; 


    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     //Initialize ListView 
     lstTest= (ListView)findViewById(R.id.lstText); 


     jSONAdapter = new JSONAdapter (main.this,jArray);//jArray is your json array 

     //Set the above adapter as the adapter of choice for our list 
     lstTest.setAdapter(jSONAdapter); 


}