使用ListView填充Dialog对话框里的item

一般弹出对话框的内容是个提醒信息，或者是“确认”和“取消”的选择信息，如果要是item是从外部获取或者很多个怎么办，下面就介绍使用ListView来填充Item，并有点击事件！

其实写法非常的简单，写一个Adapter类，调用即可

<span style="font-family:Microsoft YaHei;font-size:14px;">package com.example.dialoaglistview;

import java.util.List;
import java.util.Map;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class DialogItemsAdapter extends BaseAdapter{

	private Context context;
	private List<Map<String,Object>> listItems;
	private LayoutInflater listContainer;

	public DialogItemsAdapter(Context context,List<Map<String,Object>> listItems){
		this.context = context;
		listContainer = LayoutInflater.from(context);
		this.listItems = listItems;
	}
	
	public final class ListItemView{
		public TextView value;
	}
	
	@Override
	public int getCount() {
		return listItems.size();
	}

	@Override
	public Object getItem(int position) {
		if(position < listItems.size()){
			return listItems.get(position);
		}
		return null;
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ListItemView listItemView = new ListItemView();
		if (convertView == null) {
			convertView = listContainer.inflate(R.layout.listview_item,
					null);
			listItemView.value = (TextView) convertView
					.findViewById(R.id.text_item);

			convertView.setTag(listItemView);
		} else {
			listItemView = (ListItemView) convertView.getTag();
		}
		listItemView.value.setText((String) listItems.get(position)
				.get("value"));
		return convertView;
	}
}
</span>

然后要为ListView单独写一个布局文件

<span style="font-family:Microsoft YaHei;font-size:14px;"><?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:gravity="center_horizontal"
    android:orientation="vertical" >
    
    <TextView
        android:id="@+id/text_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="样式自己调"
        android:textSize="20sp" />

</LinearLayout>
</span>

剩下的就是调用这个Adapter了，主要代码如下

<span style="font-family:Microsoft YaHei;font-size:14px;">private void showMyDialog() {
		final String items[] = {"报告厅","多媒体教室","机房","美术系教室","普通教室","实训基地","实验室","体育","音乐系教室","语音室"};
		List<Map<String, Object>> data = new ArrayList<Map<String,Object>>();
		
		for(int i = 0;i<items.length;i++){
			Map<String,Object> item = new HashMap<String,Object>();
			item.put("value",items[i]);
			data.add(item);
		}

		ListView listView= new ListView(this);

		//构造listview对象。
		DialogItemsAdapter adapter = new DialogItemsAdapter(
				this, data); 
		listView.setAdapter(adapter);

		final AlertDialog alertDialog = new AlertDialog.Builder(
				this).create();
		alertDialog.setCanceledOnTouchOutside(false);//使除了dialog以外的地方不能被点击  
		alertDialog.setTitle("选择教室类型");
		alertDialog.setView(listView);
		alertDialog.show();
		
		listView.setOnItemClickListener(new OnItemClickListener() {//响应listview中的item的点击事件  
			  
		    @Override  
		    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,  
		            long arg3) {  
		        // TODO Auto-generated method stub  
		        TextView tv = (TextView) arg1  
		                .findViewById(R.id.text_item);//取得每条item中的textview控件  
		        textView.setText(tv.getText().toString());  
		        alertDialog.cancel();  
		    }  
		});  
	}</span>

上面的items可以从外部文件获取，也可以从网络上获取，总之，获取多个item都可以



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