android 用户注册demo

刚开始学习Android，希望童鞋们不吝赐教，
目前只完成界面跟验证部分，未跟数据库打交道。

package com.sharpandroid;

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

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.Toast;

public class UserRegisterActivity extends Activity {
	
//	private static final String[] CITY = {"北京", "上海", "深圳", "合肥", "武汉"};
	
	private int[] userHobbyId = {R.id.pingpang, R.id.basketball, R.id.football, R.id.tetennis};
	private static final String TAG = "Register";
	
	// 得到相应的显示空间对象
	private EditText userName;
	private EditText password;
	private EditText userAge;
	private RadioButton userSex;
	private List<String> userHobby;
	private Spinner userCity;
	
	private Button registerButton;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        // 给Spinner初始化数据
        Spinner spinner1 = (Spinner)findViewById(R.id.userCitySpinner);
        ArrayAdapter<?> adapter = ArrayAdapter.createFromResource(this, R.array.city, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner1.setAdapter(adapter);
       
        userName = (EditText)findViewById(R.id.userNameEdit);
        password = (EditText)findViewById(R.id.passwordEdit);
        userAge = (EditText)findViewById(R.id.userAgeEdit);
//        userSex = getUserSex((RadioGroup)findViewById(R.id.userSexRadioGroup));
//        userHobby = getUserHobby();
//        userCity = (Spinner)findViewById(R.id.userCitySpinner);
        
        registerButton = (Button)findViewById(R.id.registerButton);
        registerButton.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View view) {
				if (validationUser()) {
//					Toast.makeText(UserRegisterActivity.this, "确认注册吗？", Toast.LENGTH_SHORT).show();
					new AlertDialog
						.Builder(UserRegisterActivity.this)
						.setTitle("请确认信息")
						.setMessage(registerInfo())
						.setCancelable(false)
						.setPositiveButton("确定", new DialogInterface.OnClickListener() {
							@Override
							public void onClick(DialogInterface dialog, int id) {
								ProgressDialog.show(UserRegisterActivity.this, "用户信息注册中...", "请等待...").setCancelable(true);
							}
						})
						.setNegativeButton("修改", new DialogInterface.OnClickListener() {
							
							@Override
							public void onClick(DialogInterface dialog, int id) {
								dialog.cancel();
							}
						})
						.show();
				}
			}
        });
        
/*        
        // 这部分的功能是想动态的生成checkbox在线性布局内
        String[] hobby = getResources().getStringArray(R.array.hobby);
        for (String h : hobby) {
        	CheckBox checkbox = new CheckBox(UserRegisterActivity.this);
        	Log.i(TAG, h);
        }*/
        
//        若是ListView可以加OnItemClickListener
/*        spinner1.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view, int position,
					long id) {
				Toast.makeText(context, view.getTag().toString(), Toast.LENGTH_SHORT).show();
				
			}
        	
		});*/
    }
    
    private RadioButton getUserSex(RadioGroup radioGroup) {
    	return (RadioButton)findViewById(radioGroup.getCheckedRadioButtonId());
    }
    
    // 获取选中的用户爱好
    private List<String> getUserHobby() { 
    	if (userHobbyId!=null&&userHobbyId.length>0) {
    		userHobby = new ArrayList<String>();
//    		StringBuilder hobby = new StringBuilder();
    		for (int id : userHobbyId) {
    			CheckBox cb = (CheckBox)findViewById(id);
    			if (cb.isChecked()) {
    				userHobby.add(cb.getText().toString());
    			}
    		}
    		return userHobby;
    	}
    	return null;
    }
    
    private boolean validationUser() {
    	if (userName==null||userName.getText().toString().length()==0) {
    		userName.setError("用户名不能为空！");
    		return false;
    	}
    	
    	if (password==null||password.getText().toString().length()==0) {
    		password.setError("密码不能为空！");
    		return false;
    	}
    	if (userAge==null||userAge.getText().toString().length()==0) {
    		userAge.setError("年龄不能为空！");
    		return false;
    	} else {
    		String regx = "([1-9]{1})|([1-9]{1}[0-9]{1})|(1{1}0{2})";
    		String age = userAge.getText().toString();
    		if (!age.matches(regx)) {
    			userAge.setError("年龄应该在0-100之间");
    			return false;
    		}
    	}
    	
    	if (getUserHobby()==null||userHobby.isEmpty()) {
    		Toast.makeText(UserRegisterActivity.this, "至少选择一个喜好！", Toast.LENGTH_SHORT).show();
    		return false;
    	}
    	
    	userCity = (Spinner)findViewById(R.id.userCitySpinner);
    	userSex = getUserSex((RadioGroup)findViewById(R.id.userSexRadioGroup));
    	
    	return true;
    }
    
    private String registerInfo() {
    	StringBuilder info = new StringBuilder();
    	info.append("您注册的信息如下：\n");
    	info.append("姓名：");info.append(userName.getText().toString());info.append("\n");
    	info.append("密码：");info.append(password.getText().toString());info.append("\n");
    	info.append("年龄：");info.append(userAge.getText().toString());info.append("\n");
    	info.append("性别：");info.append(userSex.getText().toString());info.append("\n");
    	info.append("爱好：");info.append(userHobby);info.append("\n");
    	info.append("城市：");info.append(userCity.getSelectedItem().toString());info.append("\n");
    	
    	Log.i(TAG, info.toString());
    	return info.toString();
    } 
}