android项目之通讯录数据库

  Android通讯录的制作有很多种方式，网上大部分也都有了，但是用数据库制作通讯录的却少之又少，这里我就制作一个简单的app供大家学习

先看一下效果图，在下面有提供项目源码

首先打开app会有一个全屏的闪屏效果

    //全屏显示welcome画面 

        requestWindowFeature(Window.FEATURE_NO_TITLE);  

       getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,  

                WindowManager.LayoutParams.FLAG_FULLSCREEN);  

        setContentView(R.layout.start);

         //延迟一秒后执行run方法中的页面跳转 

        new Handler().postDelayed(new Runnable() { 

 

            @Override 

            public void run() { 

                Intent intent = newIntent(TongXunLuActivity.this, List.class); 

                startActivity(intent); 

                TongXunLuActivity.this.finish(); 

            } 

       }, 1000);

接下来就是对数据库的管理了，关于这部分我前面也做了详细的讲解http://blog.csdn.net/mxcsdn/article/details/50974683，也就是增删该查，这里我就不做过多的解释了

StudentDAO.Java

<pre name="code" class="html">package com.abc.sqlite;

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

import com.abc.entity.Student;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class StudentDAO {
	/**
	 * 对数据库的增删改查
	 */
	private DBOpenHelper helper;//SQLiteOpenHelper实例对象
	private SQLiteDatabase db;//数据库实例对象

	public StudentDAO(Context context) {

		helper = new DBOpenHelper(context);

	}

	public void add(Student student) {
		// 增删改查
		db = helper.getWritableDatabase();// 链接数据库
		db.execSQL("insert into tb_student values(?,?,?,?)", new String[] {
				student.getId(), student.getName(), student.getSpeciality(),
				student.getQq() });
		db.close();
	}

	/**
	 * // 添加数据
	 * 
	 * @param student
	 */

	public void addContentValues(Student student) {
		db = helper.getWritableDatabase();
		ContentValues cv = new ContentValues();
		//ContentValues 和HashTable类似都是一种存储的机制 但是两者最大的区别就在于，contenvalues只能存储基本类型的数据，
		//像string，int之类的，不能存储对象这种东西，而HashTable却可以存储对象。
		cv.put("Id", student.getId());
		cv.put("Name", student.getName());
		cv.put("Speciality", student.getSpeciality());
		cv.put("Qq", student.getQq());
		db.insert("tb_student", null, cv);
		db.close();

	}

	/**
	 * 1、查询所有student数据rawQuery方法
	 * 
	 * @return
	 */

	public List<Student> quereyTable() {
		List<Student> listStudents = new ArrayList<Student>();
		db = helper.getReadableDatabase();
		// 显示视图
		Cursor cursor = db.rawQuery("select * from tb_student", null);
		// 挨个遍历
		while (cursor.moveToNext()) {
			Student student = new Student();
			student.setId(cursor.getString(0));
			student.setName(cursor.getString(1));
			student.setSpeciality(cursor.getString(2));
			student.setQq(cursor.getString(3));
			// 添加到集合
			listStudents.add(student);
			db.close();
		}
		return listStudents;

	}

	/**
	 * // 查询单个student数据
	 * 
	 * @param student
	 * @return
	 */

	public Student quereyStudentRaw(Student student) {
		// Student student1 = new Student();
		db = helper.getReadableDatabase();
		Cursor cursor = db.rawQuery("select * from tb_student where Id=?",
				new String[] { student.getId() });// 用数组填充占位符
		//要创建一个Cursor(游标)，必须执行一个查询，通过SQL使用rawQuery()方法或是更精心的query()方法，而不能使用execSQL(String sql)方法。
		while (cursor.moveToNext()) {

			student.setId(cursor.getString(cursor.getColumnIndex("id")));// 返回指定列的名称，如果不存在返回-1
			// student.setId(cursor.getString(0));
			student.setName(cursor.getString(1));
			student.setSpeciality(cursor.getString(2));
			student.setQq(cursor.getString(3));
			db.close();
		}
		return student;
	}
	/**
	 * 2、查询所有student数据query方法
	 * 
	 * @return
	 */
	public List<Student> queryAll(Student student) {
		List<Student> sList = new ArrayList<Student>();
		db = helper.getWritableDatabase();
		Cursor cursor = db.query("tb_student", null, null, null, null, null,
				null); 
		while (cursor.moveToNext()) {
			Student student1 = new Student(cursor.getString(0),
					cursor.getString(1), cursor.getString(2),
					cursor.getString(3));
          sList.add(student1);
		}
		return sList;
	}
	/**
	 * 2、查询单个student数据query方法
	 * 
	 * @return
	 */
	public Student quereyStuden(Student student) {
		db = helper.getReadableDatabase();
		Cursor cursor=db.query("tb_student", null, "id=?", new String[] { student.getId() }, null, null, null);
		//Cursor cursor = db.query("select * from tb_student where Id=?",
			//	new String[] { student.getId() });
		//要创建一个Cursor(游标)，必须执行一个查询，通过SQL使用rawQuery()方法或是更精心的query()方法，而不能使用execSQL(String sql)方法。
				while (cursor.moveToNext()) {


					student.setId(cursor.getString(cursor.getColumnIndex("id")));// 返回指定列的名称，如果不存在返回-1
					// student.setId(cursor.getString(0));
					student.setName(cursor.getString(1));
					student.setSpeciality(cursor.getString(2));
					student.setQq(cursor.getString(3));
					db.close();
				}
				return student;

	}

	public int getCount() {
		// TODO 自动生成的方法存根
		return 0;
	}
	/*
	 * 修改数据库方法一
	 */
	public void upDate(Student student) {
		db = helper.getWritableDatabase();
		db.execSQL(
				"update tb_student set Name=?,Speciality=?,Qq=? where Id=?",
				new String[] { student.getName(), student.getSpeciality(),student.getQq(),student.getId()});
		db.close();
	}

	/*public void delete(String id) {
		// TODO 自动生成的方法存根
		db = helper.getWritableDatabase();
		Student student = new Student();
		db.delete("tb_student", "Id=?", new String[]{student.getId()});
		db.close();
	}*/
	public int delete(String id) {
		// TODO 自动生成的方法存根
		db = helper.getWritableDatabase();
		Student student = new Student();
		int count=db.delete("tb_student", "Id=?", new String[]{student.getId()});
		db.close();
		return count;
	}
}

接下来是对每个student数据内容的解析现实

Service.java

package com.abc.sqlite;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import android.content.Context;
import android.content.res.AssetManager;
import android.util.Log;
import android.util.Xml;

import com.abc.entity.Student;

public class Service {
	/**
	 * 对每个student数据内容的解析现实
	 */
	
	
	private Context context;

	public Service(Context context) {
		super();
		this.context = context;
	}

	public List<Student> parserXml(String filesName) throws IOException,
			XmlPullParserException {  
		List<Student> students=new ArrayList<Student>();
		Student student=null;//初始化一个对象
		AssetManager aManage = context.getAssets();
		InputStream is = null;//1、获取解析文本	
		XmlPullParser parser =null;
		
		is=aManage.open(filesName);
		parser=	Xml.newPullParser();// 2、创建一个解析器对象
		parser.setInput(is, "utf-8");// 设置输入字节流与编码格式
		
		int event = parser.getEventType();// 3、取得事件类型，用于开始解析时的判断
		while (event!=XmlPullParser.END_DOCUMENT) {
			 switch (event) {
		/*	 case XmlPullParser.START_DOCUMENT:							
				 break;*/
			 case XmlPullParser.START_TAG:	
				 if ("student".equalsIgnoreCase(parser.getName())) {//判断节点值是否相同
					student=new Student();
					student.setId(parser.getAttributeValue(0));//获取student的第一个属性 **********
					Log.v("ID", "55555555555555555555555");
					break;//while循环结束
				}
				 if (student!=null) {//判断student节点下的文本节点是否为空
					 if ("name".equalsIgnoreCase(parser.getName())) {
						 student.setName(parser.nextText());//nextText获取具体的数据内容*************
						 Log.v("name", "&&&&&&&&&&&&&&&&&&&&&&&&");
					 }
					 if ("speciality".equalsIgnoreCase(parser.getName())) {
						 student.setSpeciality(parser.nextText());//nextText获取具体的数据内容*************
						 Log.v("speciality","????????????????????");
					 }
					 if ("qq".equalsIgnoreCase(parser.getName())) {
						student.setQq(parser.nextText());//nextText获取具体的数据内容*************
						Log.v("qq", "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%");
					}
					
				}
				 break;
			case XmlPullParser.END_TAG:	
				if ("student".equalsIgnoreCase(parser.getName())) {
					students.add(student);//讲解析的一个student对象添加到集合中去
					student=null;//student置空
					Log.v("END_TAG", "END_TAG");
				}
				break;

			default:
				break;
			}
			 event = parser.next();//获取下一个事件类型
		}
		if(is !=null){
			is.close();
		}
		return students;
	}
}

接下来是数据内容位置的填充，并对增删改查进行监听事件，这里的删除出现了一个问题不能够实现，如有高见还请分享一下

StudentDetile.java

package com.abc.entity;

import com.abc.sqlite.StudentDAO;
import com.abc.tong.List;
import com.abc.tong.R;

import android.app.Activity;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
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;

public class StudentDetile extends Activity implements OnClickListener {

	private EditText nameText, Idn;
	private EditText qqText;
	private EditText specialityText;

	private Button saveButton;
	private Button backButton;
	private Button cancelButton;
	private Button callButton;

	private java.util.List<Student> sListQuery1=null;
	StudentDAO studentDAO = new StudentDAO(this);// 2 创建对象 /////对数据库的增删改查
	
	String qq;
	String id;
	StudentDAO studentDao = new StudentDAO(StudentDetile.this);

	private Context context;
	private java.util.List<Student> students;
	Student student;

	public StudentDetile() {
		super();
	}

	public StudentDetile(Context context, java.util.List<Student> students) {
		super();
		this.context = context;
		this.students = students;
	}

	protected void onCreate(Bundle savedInstanceState) {
		// TODO 自动生成的方法存根
		super.onCreate(savedInstanceState);

		setContentView(R.layout.student_detile);
		Intent intent = getIntent();
		Bundle bundle = intent.getBundleExtra("bundle");

		String name = bundle.getString("strName");
		qq = bundle.getString("strQq");
		String speciality = bundle.getString("strSpeciality");
		 id = bundle.getString("strId");

		nameText = (EditText) findViewById(R.id.EditName);
		qqText = (EditText) findViewById(R.id.EditQq);
		specialityText = (EditText) findViewById(R.id.EditSpeciality);
		Idn = (EditText) findViewById(R.id.EditId);

		saveButton = (Button) findViewById(R.id.update);
		cancelButton = (Button) findViewById(R.id.delete);
		backButton = (Button) findViewById(R.id.call);
		callButton = (Button) findViewById(R.id.back);

		saveButton.setOnClickListener(this);
		cancelButton.setOnClickListener(this);
		backButton.setOnClickListener(this);
		callButton.setOnClickListener(this);

/*		Idn.setText("学   号：" + id);
		nameText.setText("姓 名：" + name);
		qqText.setText("Q Q：" + qq);
		specialityText.setText("宿 舍：" + speciality);*/
		Idn.setText(id);
		nameText.setText( name);
		qqText.setText(qq);
		specialityText.setText(speciality);

	}

	public void onClick(View v) {
		// TODO Auto-generated method stub
		Intent intent = new Intent(StudentDetile.this, List.class);
		switch (v.getId()) {
		case R.id.update:
			android.content.DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					student = new Student(id, nameText.getText()
							.toString().trim(), qqText.getText().toString()
							.trim(), specialityText.getText().toString().trim());
					updateStudent(student);
					/*student.setName(student.getName()+1);
					updateStudent(student);*/
					Intent intent = new Intent(StudentDetile.this, List.class);
					startActivity(intent);
				}
			};
			// 创建对话框
			Builder builder = new Builder(this);
			builder.setTitle("确定要修改吗？");// 设置标题
			builder.setPositiveButton("确定", listener);// 设置确定按钮的文本以及监听
			builder.setNegativeButton("取消", null);
			builder.show();// 显示对话框
			break;
		case R.id.delete:
			 
			// 删除数据之前首先弹出一个对话框
			android.content.DialogInterface.OnClickListener listener1 = new DialogInterface.OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO 自动生成的方法存根
					sListQuery1=studentDAO.quereyTable();
					student = new Student(Idn.getText().toString(), nameText.getText()
							.toString().trim(), qqText.getText().toString()
							.trim(), specialityText.getText().toString().trim());
					//sListQuery1.remove(student);//从集合中删除
					studentDao.delete(student.getId());// 从数据库中删除 no
					
					Intent intent = new Intent(StudentDetile.this, List.class);
					startActivity(intent);
				}
			};
			// 创建对话框
			Builder builder1 = new Builder(this);
			builder1.setTitle("确定要删除吗？");// 设置标题
			builder1.setPositiveButton("确定", listener1);// 设置确定按钮的文本以及监听
			builder1.setNegativeButton("取消", null);
			builder1.show();// 显示对话框
			break;
		case R.id.back:

			startActivity(intent);
			break;
		case R.id.call:
			Intent it = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + qq));
			startActivity(it);
			//StudentDetile.this.startActivity(it);
		default:
			break;
		}
	}

	private void updateStudent(Student student) {
		// TODO 自动生成的方法存根

		studentDao.upDate(student);
	}
}

接下来自定义一个适配器，进行界面数据的绑定,并在list方法中实现，这里对list进行了一个长按点击事件——打电话

CustomAdapter.java

package com.abc.adapter;

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

import com.abc.entity.Student;
import com.abc.sqlite.Service;
import com.abc.tong.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 CustomAdapter extends BaseAdapter {
	
	private List<Student> sList;
    /*private  int icons[]={R.drawable.ic_launcher,R.drawable.ic_launcher,
    		R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,
    		R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher};*/
    private Context context;
    


	public CustomAdapter(List<Student> sList, Context context) {
		super();
		this.sList = sList;
		this.context = context;
	}

	//sList=service.parserXml("text.xml");
	@Override
	public int getCount() {
		// 返回ListView的Item条目 的总数
		return sList.size();// 返回集合

		// return strStudent.length;//返回数组
	}

	@Override
	public Object getItem(int position) {
		// 返回ListView的Item条目 代表的对象
		return sList.get(position);// 返回集合

		//return strStudent[position];//返回数组
	}

	@Override
	public long getItemId(int position) {
		// 返回ListView的Item条目 的id
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		// 将自定义的list_item.xml文件找出来并转换成View对象
		//Android ListView中每显示出一条item的时候，都会自动的调用BaseAdapter.getView(int position, View convertView, ViewGroup parent)方法。

		/*
		 * View.inflate(context, resource, root);
		 * 
		 * resource： 布局文件的id，比如R.layout.layout_menu_item
		 * root：这是一个可选参数，resource布局文件中layout_
		 * *参数设置的参照物就是这个root，也就是说inflate方法会根据这个root的大小，
		 * 将resource布局文件中layout_*参数转换成一个LayoutParam对象
		 */
		// LayoutInflater inflate = LayoutInflater.from(context);
		View view=View.inflate(context, R.layout.list_item,null );
	//特别注意此时context不能写this，或CustomAdapter。this,因为此时的上下文是List.java
		TextView nameText=(TextView) view.findViewById(R.id.text_name);
		TextView qqText=(TextView) view.findViewById(R.id.text_qq);
		TextView specialityText=(TextView) view.findViewById(R.id.text_speciality);
		 
		nameText.setText((CharSequence)sList.get(position).getName());
		qqText.setText((CharSequence)sList.get(position).getQq());
		specialityText.setText((CharSequence)sList.get(position).getSpeciality());
		
		ImageView imageView=(ImageView) view.findViewById(R.id.imageView);
		//imageView.setBackgroundResource(icons[position]);//数组过多就不写了，但是它默认会配上图片
		
		return view;
	}

}

List.java

package com.abc.tong;

import java.io.IOException;

import org.xmlpull.v1.XmlPullParserException;

import com.abc.adapter.CustomAdapter;
import com.abc.entity.Student;
import com.abc.entity.StudentDetile;
import com.abc.sqlite.Service;
import com.abc.sqlite.StudentDAO;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;
import android.view.View.OnTouchListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.Toast;

public class List extends Activity implements OnItemLongClickListener {
	private Student student = null;
	private java.util.List<Student> sList = null;
	private java.util.List<Student> sListQuery = null;
	private ListView listv;

	private EditText nameText, Idn;
	private EditText qqText;
	private EditText specialityText;
	String strQq;

	@Override
	// 当退出app时弹出对话框
	// 但是这个退出程序，可能并未完全退出，如果你进入管理APP界面，会看到程序仍在运行。如果想完全退出程序，需要进行进一步处理。
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		// 如果是返回键,直接返回到桌面
		if (keyCode == KeyEvent.KEYCODE_BACK) {
			showExitGameAlert();
		}

		return super.onKeyDown(keyCode, event);
	}

	private void showExitGameAlert() {

		Builder a = new AlertDialog.Builder(List.this);
		a.setMessage("确定退出通讯录吗")
				.setPositiveButton("确定", new DialogInterface.OnClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which) {
						System.exit(0);
					}
				})
				.setNegativeButton("取消", new DialogInterface.OnClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which) {
						dialog.cancel();
					}
				}).show();
	}

	protected void onCreate(Bundle savedInstanceState) {
		// TODO 自动生成的方法存根
		super.onCreate(savedInstanceState);

		setContentView(R.layout.list_contacts);

		nameText = (EditText) findViewById(R.id.EditName);
		qqText = (EditText) findViewById(R.id.EditQq);
		specialityText = (EditText) findViewById(R.id.EditSpeciality);
		Idn = (EditText) findViewById(R.id.EditId);

		listv = (ListView) findViewById(R.id.list);
		Service service = new Service(this);// 1 创建对象 /////对每个student数据内容的解析现实

		try {
			sList = service.parserXml("text.xml");
		} catch (IOException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		} catch (XmlPullParserException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		String[] strStudent = new String[sList.size()];// 初始化数组大小
		StudentDAO studentDAO = new StudentDAO(this);// 2 创建对象 /////对数据库的增删改查
		// huoqu yianjia xianshi
		int i = 0;// 定义一个开始标识
		for (Student student : sList) {
			strStudent[i] = student.getId() + student.getName()
					+ student.getQq() + student.getSpeciality();

			studentDAO.addContentValues(student);// 将每一个student添加到studentDAO
			// studentDAO.addContentValues(sList.get(i));//
			// 将每一个student添加到studentDAO
			i++;// ***************************

		}
		// sListQuery=studentDAO.queryAll(student);//从数据库查询出所有数据，此方法有bug
		sListQuery = studentDAO.quereyTable();
		CustomAdapter adapter = new CustomAdapter(sListQuery,
				getApplicationContext());

		/*
		 * ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
		 * android.R.layout.simple_expandable_list_item_1, strStudent);
		 */// 数据集合
		listv.setAdapter(adapter);

		listv.setOnItemLongClickListener(this);

		listv.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				// TODO 自动生成的方法存根
				// String strinfo=(String) ((TextView)view).getText();

				/*
				 * String strId=strinfo.substring(0,strinfo.indexOf("888888"));
				 * String
				 * strName=strinfo.substring(1,strinfo.indexOf("8888888"));
				 * String
				 * strSpeciality=strinfo.substring(2,strinfo.indexOf("6666666"
				 * )); String
				 * strQq=strinfo.substring(3,strinfo.indexOf("6666666"));
				 */
				// 获取点击内容
				/*
				 * String strId=Idn.getText().toString().trim(); String
				 * strName=nameText.getText().toString().trim(); String
				 * strSpeciality=specialityText.getText().toString().trim();
				 * String strQq=qqText.getText().toString().trim();
				 * 
				 * Idn.setText("姓 名："+strId); nameText.setText("姓 名："+strName);
				 * qqText.setText("Q Q："+strQq);
				 * specialityText.setText("宿 舍："+strSpeciality);
				 */

				String strId = sListQuery.get(position).getId();
				String strName = sListQuery.get(position).getName();
				String strSpeciality = sListQuery.get(position).getSpeciality();
				strQq = sListQuery.get(position).getQq();

				Intent intent = new Intent(List.this, StudentDetile.class);

				// Student stu_intent=new Student();

				Bundle bundle = new Bundle();

				bundle.putString("strId", strId);
				bundle.putString("strQq", strQq);
				bundle.putString("strName", strName);
				bundle.putString("strSpeciality", strSpeciality);

				intent.putExtra("bundle", bundle);
				startActivity(intent);
			}
		});
	}

	public boolean onItemLongClick(AdapterView<?> arg0, View view,
			int position, long arg3) {
		// TODO 自动生成的方法存根
		strQq = sListQuery.get(position).getQq();
		Log.e("mxmxmxmmxmxmxmxmm", view.toString() + "position=" + position);
		Intent it = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + strQq));
		// Intent it = new Intent(List.this, StudentDetile.class);
		List.this.startActivity(it);

		return true;// 为了区分点击事件和长按事件，长按事件里的return false; 改为true就好了
	}

}

部分简单代码与布局文件在这里就不贴出来了，水滴石穿。

在这里分享一下源码，项目源码下载