一个自定义控件的Demo

里面包括Button、Checkbock、listview、popupwindow的自定义

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.Button;

public class AndroidWidgetActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.main);
    }
    public void tolistmain(View view){
    	Intent intent = new Intent(this, ListMainActivity.class);
    	startActivity(intent);
    }
    public void topopwindowmain(View view){
    	Intent intent = new Intent(this, PopwindowMainActivity.class);
    	startActivity(intent);
    }
}

import java.util.List;
import cn.ittest.domain.item;
import cn.ittest.widget.R;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class ListAdapter extends BaseAdapter {

	List<item> items;
	private int resource;
	private LayoutInflater inflater;
	public ListAdapter(Context context,List<item> items,int resource) {
		this.resource = resource;
		this.items = items;
		inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	}

	@Override
	public int getCount() {
		return items.size();
	}

	@Override
	public Object getItem(int position) {
		return items.get(position);
	}

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

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ImageView imgView = null;
		TextView titleView = null;
		TextView expView = null;
		if(convertView==null){
			convertView = inflater.inflate(resource, null);//生成条目界面对象
			imgView = (ImageView) convertView.findViewById(R.id.img);
			titleView = (TextView) convertView.findViewById(R.id.tvtitle);
			expView = (TextView) convertView.findViewById(R.id.tvexp);

			ViewCache cache = new ViewCache();
			cache.imgView = imgView;
			cache.titleView = titleView;
			cache.expView = expView;
			convertView.setTag(cache);
		}else{
			ViewCache cache = (ViewCache) convertView.getTag();
			imgView = cache.imgView;
			titleView = cache.titleView;
			expView = cache.expView;
		}
		item listItem = items.get(position);
		imgView.setImageResource(R.drawable.listtitle);
		titleView.setText(listItem.getTitle());
		expView.setText(listItem.getExp());

		return convertView;
	}

	private final class ViewCache{
		public ImageView imgView;
		public TextView titleView;
		public TextView expView;
	}
}

import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.LinearLayout.LayoutParams;
import android.widget.Toast;

public class PopwindowMainActivity extends Activity{

	private int screenx = 0;
	private int screeny = 0;
	private int x=0,y=0;
	private EditText edtx;
	private EditText edty;
	private TextView showxy;
	private Button sure;
	private Button cancle;
	private PopupWindow popupWindow;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.pop);
		edtx = (EditText)this.findViewById(R.id.edtx);
		edty = (EditText)this.findViewById(R.id.edty);
		showxy = (TextView)this.findViewById(R.id.showxy);
		sure = (Button)this.findViewById(R.id.sure);
		cancle = (Button)this.findViewById(R.id.cancle);
		showscreen();
		innit();
	}
	public void showscreen(){
		screenx = getWindowManager().getDefaultDisplay().getWidth();//获得屏幕宽度
		screeny = getWindowManager().getDefaultDisplay().getHeight();//获得屏幕高度
		showxy.setText("X:"+screenx+"    "+"Y:"+screeny);
	}
	public void innit(){
		View popitem = getLayoutInflater().inflate(R.layout.popwindowitem,null);
		popupWindow = new PopupWindow(popitem,LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);//初始化窗口
		popupWindow.setFocusable(true);//
	    sure.setOnClickListener(new onpopsureclicklistener());
	    cancle.setOnClickListener(new onpopcancleclicklistener());
	    final EditText edtshow = (EditText)popitem.findViewById(R.id.edtshow);
	    Button itemsure = (Button)popitem.findViewById(R.id.itemsure);
	    Button itemcancle = (Button)popitem.findViewById(R.id.itemcancle);
	     itemsure.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				String showString = edtshow.getText().toString();
				if (showString != null) {
					Toast.makeText(getApplicationContext(), showString, Toast.LENGTH_SHORT).show();
					popupWindow.dismiss();
				}else {
					Toast.makeText(getApplicationContext(), "输入为空，请重新输入！", Toast.LENGTH_SHORT).show();
				}
			}
		});
	     itemcancle.setOnClickListener(new OnClickListener() {
				@Override
				public void onClick(View v) {
					if (popupWindow != null) {
						popupWindow.dismiss();
					}
				}
			});
	}
	public final class onpopsureclicklistener implements View.OnClickListener{

		@Override
		public void onClick(View v) {
		    	try {
				    x = Integer.parseInt(edtx.getText().toString());
				    y = Integer.parseInt(edty.getText().toString());
				    popupWindow.showAtLocation(findViewById(R.id.layout), Gravity.LEFT|Gravity.TOP, x, y);
				} catch (Exception e) {
					Toast.makeText(getApplicationContext(), "输入的数据无效，请重新输入！", 1).show();
				}
		}
	}
	public final class onpopcancleclicklistener implements View.OnClickListener{

		@Override
		public void onClick(View v) {
			if (popupWindow != null) {
				popupWindow.dismiss();
			}
		}
	}
}

public class item {
	private String title;
	private String exp;
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public String getExp() {
		return exp;
	}
	public void setExp(String exp) {
		this.exp = exp;
	}
	public item(String title, String exp) {
		super();
		this.title = title;
		this.exp = exp;
	}
	public item() {
	}
	@Override
	public String toString() {
		return "item [title=" + title + ", exp=" + exp + "]";
	}
}

import java.util.ArrayList;
import java.util.List;
import cn.ittest.adapter.ListAdapter;
import cn.ittest.domain.item;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;

public class ListMainActivity extends Activity{

	private ListView list;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.list);
		list = (ListView)this.findViewById(R.id.list);
		list.setOnItemClickListener(new onItemclicklistener());
		show();
	}
	public final class onItemclicklistener implements OnItemClickListener{

		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position, long id)  {
			ListView listView = (ListView)parent;
			item liItem = (item) listView.getItemAtPosition(position);
			Toast.makeText(getApplicationContext(), liItem.toString(), 1).show();
		}
	}
	public void show(){
		List<item> items = new ArrayList<item>();
		for (int i = 1; i <= 15; i++) {
			item lItem = new item("第"+i+"个标题", "详细介绍神马！！！！！！！！！！！！！！！");
			items.add(lItem);
		}
		ListAdapter adapter = new ListAdapter(this, items, R.layout.listitem);
		list.setAdapter(adapter);
	}
}

地址：http://download.csdn.net/detail/u011566000/5865305