ArrayAdapter 的綜合運用

不多說，先上圖。

1.DataModel.java

這個主要是用來存放數據模型的類。即在列表項中存在不同的view的時候，可以這樣使用。

package com.sunplusedu.customadapger;

public class DataModel {

	private String name;	
	private int drawableId;
	private int type;

	public DataModel(String name, int drawableId, int type) {
		this.name = name;
		this.drawableId = drawableId;
		this.type = type;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}	

	public int getDrawableId() {
		return drawableId;
	}

	public void setDrawableId(int drawableId) {
		this.drawableId = drawableId;
	}
	
	public int getType(){
		return type;
	}
}

2.MyAdapter.java

import java.util.List;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;

public class MyAdapter extends BaseAdapter{

	public final static int TYPE_BUTTON = 0;
	public final static int TYPE_CHECKBOX = 1;
	private final static int TYPE_NUM = 2;

	private final List<DataModel> mList;
	private LayoutInflater mInflater;

	public MyAdapter(Context context, List<DataModel> list)  {
		this.mInflater = LayoutInflater.from(context);
		this.mList = list;
	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return mList.size();
	}
	
	@Override
	public int getItemViewType(int position) {
		// TODO Auto-generated method stub
		DataModel d = mList.get(position);
		Log.i("getItemViewType()","OK");
		return d.getType();
	}

	@Override
	public int getViewTypeCount() {
		// TODO Auto-generated method stub
		return TYPE_NUM;
	}
	//用來保存view的引用
	final class ViewHolder{
		public TextView textView;
		public ImageView imageView;
		public Button button;
		public CheckBox checkBox;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		DataModel model= mList.get(position);
		Log.d("MyAdataer", "in get view positon = " + position);

		ViewHolder holder = null;

		if (convertView == null) {
			Log.d("MyAdataer", "a new View");
			holder=new ViewHolder(); 

			switch(model.getType()){
			case MyAdapter.TYPE_BUTTON:
				convertView = mInflater.inflate(R.layout.button_item, null);
				holder.imageView = (ImageView)convertView.findViewById(R.id.imageView);
				holder.textView = (TextView)convertView.findViewById(R.id.textView);
				holder.button = (Button)convertView.findViewById(R.id.button);
				//可以在此添加事件處理等
				break;
			case MyAdapter.TYPE_CHECKBOX:
				convertView = mInflater.inflate(R.layout.check_item, null);
				holder.imageView = (ImageView)convertView.findViewById(R.id.imageView);
				holder.textView = (TextView)convertView.findViewById(R.id.textView);
				holder.checkBox = (CheckBox)convertView.findViewById(R.id.checkBox);
				break;
			}
			convertView.setTag(holder);
		}

		//刷新數據
		switch(model.getType()){
		case MyAdapter.TYPE_BUTTON:
			holder = (ViewHolder) convertView.getTag();
			holder.imageView.setBackgroundResource(model.getDrawableId());
			holder.textView.setText(model.getName());
			break;
		case MyAdapter.TYPE_CHECKBOX:
			holder = (ViewHolder) convertView.getTag();
			holder.imageView.setBackgroundResource(model.getDrawableId());
			holder.textView.setText(model.getName());
			break;
		}

		return convertView;
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return 0;
	}
}    

3.CustomAdapterActivity.java

package com.sunplusedu.customadapger;

import java.util.ArrayList;
import java.util.List;

import android.app.ListActivity;
import android.os.Bundle;

public class CustomAdapterActivity extends ListActivity {
	/** Called when the activity is first created. */

	private List<DataModel> mData;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		mData = getData();
		
		MyAdapter adapter = new MyAdapter(this, mData);
		setListAdapter(adapter);
	}

	private List<DataModel> getData() {
		
		List<DataModel> list = new ArrayList<DataModel>();
		
		list.add(new DataModel("Click ", R.drawable.head1, MyAdapter.TYPE_BUTTON));
		list.add(new DataModel("Check", R.drawable.head1, MyAdapter.TYPE_CHECKBOX));
		list.add(new DataModel("AAA ", R.drawable.head2, MyAdapter.TYPE_CHECKBOX));
		list.add(new DataModel("BBB ", R.drawable.head2, MyAdapter.TYPE_BUTTON));
		list.add(new DataModel("CCC ", R.drawable.head2, MyAdapter.TYPE_BUTTON));
		list.add(new DataModel("DDD ", R.drawable.head2, MyAdapter.TYPE_CHECKBOX));
		list.add(new DataModel("EEE ", R.drawable.head1, MyAdapter.TYPE_CHECKBOX));
		list.add(new DataModel("FFF ", R.drawable.head1, MyAdapter.TYPE_BUTTON));
		list.add(new DataModel("GGG ", R.drawable.head1, MyAdapter.TYPE_CHECKBOX));
		list.add(new DataModel("HHH ", R.drawable.head3, MyAdapter.TYPE_CHECKBOX));
		list.add(new DataModel("1111 ", R.drawable.head1, MyAdapter.TYPE_BUTTON));
		list.add(new DataModel("2222 ", R.drawable.head3, MyAdapter.TYPE_CHECKBOX));
		list.add(new DataModel("3333", R.drawable.head3, MyAdapter.TYPE_CHECKBOX));
		return list;
	}	
}