在Android中使用XML佈局的自定義視圖

Question

我有一個ListAdapter，它有很多不同的行佈局。要獲得乾淨的代碼，我想在View類的適配器的getView（）中外包行的佈局。是否可以將XML佈局充填到自定義視圖中？我只找到了LayoutInflater，但它返回一個視圖，並沒有幫助。我想要一個Activity的setLayout（）。這可能嗎？

謝謝！

Answer 1

你可以有一個自定義列視圖，並誇大你的XML在它的構造：

public MyRow extends LinearLayout { 
    public MyRow(Context context) { 
     super(context); 
     LayoutInflater.from(context).inflate(R.layout.my_row, this, true); 
      ... other initialization ... 
    } 
} 

和然後在my_row.xml中使用merge：

<?xml version="1.0" encoding="utf-8"?> 
<merge xmlns:android="http://schemas.android.com/apk/res/android"> 
    ... your row layout ... 
</merge> 

merge元素會將其子元素添加爲自定義視圖的子元素。查看Merging Layouts以獲取更多信息。

Answer 2

我alwas使用自定義適配器，具有像viewholder：

public class CalendarAdapter extends BaseAdapter { 
protected static CalViewHolder holder; 
private LayoutInflater mInflater; 
public HashMap<Integer,String[]> appointments = new HashMap<Integer,String[]>(); 

public CalendarAdapter(Context context,HashMap<Integer,String[]> set_appointments) { 
    // Cache the LayoutInf 
    mInflater = LayoutInflater.from(context); 
    appointments = set_appointments; 
} 
@Override 
public int getCount() { 
    // TODO Auto-generated method stub 
    return appointments == null ? 0:appointments.size(); 
} 
@Override 
public Object getItem(int arg0) { 
    // TODO Auto-generated method stub 
    return null; 
} 
@Override 
public long getItemId(int arg0) { 
    // TODO Auto-generated method stub 
    return 0; 
} 
@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    if (convertView == null) { 
     convertView = mInflater.inflate(R.xml.appointment, null); 
     holder = new CalViewHolder(); 
     holder.app_lay = (LinearLayout) convertView.findViewById(R.id.appointment_layout); 
     holder.app_head = (TextView) convertView.findViewById(R.id.appointment_head); 
     holder.app_body = (TextView) convertView.findViewById(R.id.appointment_body); 
     convertView.setTag(holder); 
    }else{ 
     holder = (CalViewHolder) convertView.getTag(); 
    } 
    holder.app_head.setText(appointments.get(position)[0]); 
    holder.app_body.setText(appointments.get(position)[1]); 
    return convertView; 
} 

static class CalViewHolder { 
    LinearLayout app_lay; 
    TextView app_head; 
    TextView app_body; 
} 

}