ListView中的问题，有点意思

你SimpleAdapter 里面的布局是加载另一个布局，不能加载原来的大的布局，你这样写是加载了三次activity_history ，所以会出现三个保修历史，你只要把activity_history里面下面的两个TextView写到另外的一个布局里面，然后SimpleAdapter加载这个布局就行了

activitypackage app.example.test12_24;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class History extends Activity{

    private ListView lv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_history);
        List<Map<String, String>> datas = new ArrayList<Map<String, String>>();

        putData(datas,"time", "2014/12/23傍晚","category","Mac地址绑定错误");
        putData(datas,"time", "2014/12/22中午","category","用户名或密码错误");

        SimpleAdapter sa = new SimpleAdapter(this,
                datas,
                R.layout.history_list, //加载外部布局
                new String[]{"time","category"},
                new int[]{R.id.ht_tv_time,R.id.ht_tv_category});
        lv = (ListView) findViewById(R.id.ht_lv_list);
        lv.setAdapter(sa);
    }
    private void putData(List<Map<String, String>> datas,String key1,String value1,String key2,String value2){
        Map<String,String> data = new HashMap<String, String>();
        data.put(key1,value1);
        data.put(key2,value2);
        datas.add(data);
    }
}activity 的XML<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >    <LinearLayout
        android:id="@+id/ht_title"
        android:layout_width="fill_parent"
        android:layout_height="45dp"
        android:gravity="center_horizontal|center_vertical" >        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="报修历史"
            android:textColor="#ffffff"
            android:textSize="20sp" />
    </LinearLayout>    <ListView
        android:id="@+id/ht_lv_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@id/ht_title" >
    </ListView></RelativeLayout>外部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="match_parent"
    android:orientation="vertical" >    <TextView
        android:id="@+id/ht_tv_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/ht_lv_list"
        android:textSize="15sp" >
    </TextView>    <TextView
        android:id="@+id/ht_tv_category"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/ht_tv_time"
        android:layout_marginTop="5dp"
        android:textSize="20sp" >
    </TextView></LinearLayout>
因为你加载adpter的时候用是activity的XML，所有就又多了2次activity的XML。也就看到了你这个效果。记得加载adpter一定要创建一个新的XML文件布局

加载adpter时，要重新写一个item.xml 布局，用来显示在listview中，每一行的内容。
2#，代码已经贴上了。

完美解决lv = (ListView) findViewById(R.id.ht_lv_list);
//通过inflater将R.layout.history_top布局转换为View对象，再通过ListView中的addHeaderView方法添加进去
View header = getLayoutInflater().inflate(R.layout.history_top, null);
lv.addHeaderView(header);<?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="45dp"
   android:id="@+id/ht_title"
   android:background="@drawable/title_bar"
   android:gravity="center_horizontal|center_vertical"  >
       <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/ht_tv_head"
         android:text="报修历史"
         android:textSize="20sp"
android:textColor="#ffffff" />
</LinearLayout><?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <ListView
        android:id="@+id/ht_lv_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true">
    </ListView>

    <TextView
        android:layout_below="@id/ht_lv_list"
        android:id="@+id/ht_tv_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15sp">
    </TextView>

    <TextView
        android:layout_below="@id/ht_tv_time"
        android:layout_marginTop="5dp"
        android:id="@+id/ht_tv_category"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20sp">

    </TextView>
</RelativeLayout>

调试易

ListView中的问题，有点意思

解决方案 »