实现一个快速简单的SimpleListDialog<T>

我写这样的文章都是为了快速迭代，所以都写的比较简单，谅解

此类支持任意Model对象，该对象需要重写toString()

import java.util.List;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.ListView;

import com.mb.bgfitting.CommonAdapter;
import com.mb.bgfitting.ViewHolder;
import com.mb.bgfitting.app.R;

/**
 * 
 * @author pythoner
 * 
 */
public class SimpleListDialog<T> extends Dialog
{

    private Context context;
    private ListView listView;
    private List<T> beans;
    private CommonAdapter<T> adapter;
    public SimpleListDialog(Context context,List<T> beans)
    {
        this(context, R.style.Theme_Dialog_NoTitle,beans);
        // TODO Auto-generated constructor stub
        
    }

    public SimpleListDialog(Context context, int theme,List<T> beans)
    {
        super(context, theme);
        // TODO Auto-generated constructor stub
        this.context = context;
        this.beans = beans;
        init();
    }

    private void init()
    {
        this.setCanceledOnTouchOutside(true);
        this.setCancelable(true);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dialog_simple_list);

        initViews();
//        initValues();
    }

    private void initViews()
    {
    	if(beans==null){
    		return;
    	}
        listView=(ListView)findViewById(R.id.listView);
        
        listView.setAdapter(adapter = new CommonAdapter<T>( context, beans,
				  R.layout.item_simple_list){
				  
				@Override
				public void setValues(ViewHolder helper, T item, int position) {
					// TODO Auto-generated method stub
					helper.setText(R.id.item_0, item.toString());
				}

		});
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> arg0, View v, int position,
					long id) {
				// TODO Auto-generated method stub
				
				T instance=beans.get(position);
				if(onItemClickListener!=null){
					onItemClickListener.onItemClick(v, instance,position);
				}
				
				dismiss();
			}
		});
    }

    private void initValues()
    {
        // 不能写在init()中
        Window window = getWindow();
        WindowManager.LayoutParams lp = window.getAttributes();
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        lp.width = dm.widthPixels;
        lp.gravity = Gravity.BOTTOM;
        window.setAttributes(lp);

    }

    private OnItemClickListener<T> onItemClickListener;

    public interface OnItemClickListener<T>
    {
        public void onItemClick(View v,T item,int position);
    }

	public void setOnItemClickListener(OnItemClickListener<T> onItemClickListener) {
		this.onItemClickListener = onItemClickListener;
	}

}

简单的一个Item布局item_simple_list.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="wrap_content"
	>
	
    <TextView 
        android:id="@+id/item_0"
        android:layout_width="match_parent"
		android:layout_height="wrap_content"
		android:paddingTop="16dp"
		android:paddingBottom="16dp"
		android:gravity="center"
		android:textColor="@color/base_text_black"
		android:textSize="@dimen/font_xbig"
		android:singleLine="true"
        />
	
</RelativeLayout>

附件是需要的工具类，快速生成一个ListView的代码，可能需要Volley，如报错，可以注释掉不必要的代码，不影响本例。


使用：

List<KeyValue> list=new ArrayList<KeyValue>();
				list.add(new KeyValue("0","继续挑选"));
				list.add(new KeyValue("1","立即购买"));
				list.add(new KeyValue("2","配货投递"));
				list.add(new KeyValue("3","立即试衣"));
				
				SimpleListDialog<KeyValue> d=new SimpleListDialog<KeyValue>(context, list);
				d.setOnItemClickListener(new SimpleListDialog.OnItemClickListener<KeyValue>() {
					
					@Override
					public void onItemClick(View v, KeyValue item, int position) {
						// TODO Auto-generated method stub
						
						
					}
				});
				d.show();

KeyValue是个Model对象，重写了toString()，可以是任何对象