BaseAdapter滚动视图不滚动

Question

BaseAdapter里面滚动视图的工作里面没有滚动型机器人

使用的工作：基础适配器 请分享关于如何工作的内部滚动型滚动型中列表

Answer 1

基础转接器自动是可滚动的想法。你不需要在scrollview中插入它。将基础适配器放在滚动视图之外，它将起作用。

Answer 2

第1步 - 创建一个活动name-MainActivity.java并创建一个列表视图。

import android.os.Bundle; 
import android.app.Activity; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 

public class MainActivity extends Activity { 
     private String listview_array[] = { "ONE", "TWO", "THREE", "FOUR", "FIVE", 
        "SIX", "SEVEN", "EIGHT", "NINE", "TEN" }; 
     ListView myList; 

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

       myList = (ListView) findViewById(R.id.listView); 
       myList.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, listview_array)); 
       Helper.getListViewSize(myList); 

     } 
} 

Step2-创建main.xml-

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MainActivity" > 

    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="vertical" > 

     <TextView 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginTop="19dp" 
      android:text="@string/hello_world" /> 

     <ImageView 
      android:layout_width="50dp" 
      android:layout_height="50dp" 
      android:src="@drawable/ic_launcher" /> 

     <ListView 
      android:id="@+id/listView" 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent" /> 
    </LinearLayout> 

</ScrollView> 

Step3-最后和重要的事情创建另一个类Helper.java并提出如下代码 -

import android.util.Log; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ListAdapter; 
import android.widget.ListView; 

public class Helper { 
    public static void getListViewSize(ListView myListView) { 
     ListAdapter myListAdapter = myListView.getAdapter(); 
     if (myListAdapter == null) { 
      //do nothing return null 
      return; 
     } 
     //set listAdapter in loop for getting final size 
     int totalHeight = 0; 
     for (int size = 0; size < myListAdapter.getCount(); size++) { 
      View listItem = myListAdapter.getView(size, null, myListView); 
      listItem.measure(0, 0); 
      totalHeight += listItem.getMeasuredHeight(); 
     } 
     //setting listview item in adapter 
     ViewGroup.LayoutParams params = myListView.getLayoutParams(); 
     params.height = totalHeight + (myListView.getDividerHeight() * (myListAdapter.getCount() - 1)); 
     myListView.setLayoutParams(params); 
     // print height of adapter on log 
     Log.i("height of listItem:", String.valueOf(totalHeight)); 
    } 
}