android - 如何降低 ListActivity (Android) 中的高度？

Question

目前我在Android聊天屏幕应用程序中工作，使用TabHost设置五个标签，然后我在我的项目中使用ListActivity创建ListView，但是ListView全屏显示，我想降低高度，因为添加了EditText屏幕底部，请帮助我。

提前致谢

我尝试了下面给出的供您引用:

public class Texts extends ListActivity
{
     String[] data={"How may i help you?", "Please help me", "Item 3","Item 1", "Item 2", "Item 3","Item 1", "Item 2", "Item 3"};

    Drawable[] usrimg=null;
    String bgimg = "",_user="",_pass="";
    int odd_resID,even_resID;

     public void onCreate(Bundle savedInstanceState)
     {
            super.onCreate(savedInstanceState);
            System.out.println(" CHAT SCREEN ");

          //finding the list view
            ListView myList = getListView();
            myList.setAdapter(new MyCustomAdapter());
            myList.setCacheColorHint(0);

//          setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mListContent));
     }
     class MyCustomAdapter extends BaseAdapter
        {

            /**
             * returns the count of elements in the Array that is used to draw the text in rows 
             * @see android.widget.Adapter#getCount()
             */
            @Override
            public int getCount() 
            {
                return data.length; // data is nothing but the message length
            }

            /**
             * Get the data item associated with the specified position in the data set.
             * (not Implemented at this point)
             * @param position The position of the row that was clicked (0-n)
             * @see android.widget.Adapter#getItem(int)
             */
            @Override
            public String getItem(int position) 
            {
                // TODO Auto-generated method stub
                return null;
            }

            /**
             * Get the row id associated with the specified position in the list.
             * (not implemented at this point)
             * @param position The position of the row that was clicked (0-n)
             * @see android.widget.Adapter#getItemId(int)
             */
            @Override
            public long getItemId(int position) 
            {
                // TODO Auto-generated method stub
                return position;
            }

            /**
             * Returns the complete row that the System draws.
             * It is called every time the System needs to draw a new row;
             * You can control the appearance of each row inside this function.
             * @param position The position of the row that was clicked (0-n)
             * @param convertView The View object of the row that was last created. null if its the first row
             * @param parent The ViewGroup object of the parent view
             * @see android.widget.Adapter#getView(int, android.view.View, android.view.ViewGroup)
             */

            public View getView(int position, View convertView, ViewGroup parent) 
            {


                System.out.println("Enter here");


                LayoutInflater inflater = getLayoutInflater();//When you use a custom view in a ListView you must define the row layout.
                //You create an xml where you place android widgets and then in the adapter's code 
                View row;
                String even_color,odd_color;

//              SharedPreferences prefList = getSharedPreferences("PrefsFile",MODE_PRIVATE);
//              even_color = prefList.getString("even_bubble_color","pink");
//              odd_color = prefList.getString("odd_bubble_color","green");
//              
//              int even_color_id=getResources().getIdentifier(even_color,"drawable","com.teks.chilltwit"),
//                  odd_color_id=getResources().getIdentifier(odd_color,"drawable","com.teks.chilltwit");


                //ImageView even_view,odd_view;


                System.out.println("Timeline: Position: "+position+", Length: "+data.length);
//              if(position!=data.length-1){

                if(position%2==0)
                {
                    row = inflater.inflate(R.layout.list_row_layout_even, parent, false);
                    TextView textLabel = (TextView) row.findViewById(R.id.text);
                    textLabel.setText(data[position]);

                }
                else
                {
                    row = inflater.inflate(R.layout.list_row_layout_odd, parent, false);
                    TextView textLabel = (TextView) row.findViewById(R.id.text);
                    textLabel.setText(data[position]);
                }

                return (row);
            }
        }

Answer 1

尝试使用 fragment 来划分屏幕并完成您想要的。

• 顶部 fragment 包含 ListView 中的对话，就像您拥有的那样。

• 底部 fragment 包含 EditText、“发送”按钮等。

通过这种方式，用户可以滚动到对话的任何部分并且能够发送新消息而无需向下滚动。