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课程名称 |
基于Android平台移动互联网开发 |
实验日期 |
2016年5月6日 |
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实验项目名称 |
SQLite数据库操作 |
实验地点 |
S30010 |
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实验类型 |
□验证型 √设计型 □综合型 |
学 时 |
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一、实验目的及要求（本实验所涉及并要求掌握的知识点） |
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二、实验环境（本实验所使用的硬件设备和相关软件） |
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(1)PC机 (2)操作系统：Windows XP (3)软件： Eclipse, JDK1.6，Android SDK，ADT |
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三、实验内容及步骤 |
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（1） 确定数据库的数据结构。 （2） 新建工程，修改布局文件，定义字符串资源。 （3） 开发布局文件activity_main.xml用于显示联系人列表。 （4） layout目录下新建一个detail.xml,用于显示联系人详细信息。 （5） 开发数据库辅助类MyOpenHelper类 （6） DetailActivity端开发实现数据库增加、删除、修改记录等操作 （7） 新建Activity名为DetailActivity.java，实现联系人详细信息显示功能。
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四、实验结果（本实验源程序清单及运行结果或实验结论、实验设计图） |
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代码： ackage com.example.tongxunlu; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.support.v4.widget.CursorAdapter; import android.support.v4.widget.SimpleCursorAdapter; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.Button; import android.widget.ListView; public class MainActivity extends Activity { Button btn1,btn2; ListView listview; public static MyOpenHelper dbhelper; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btn1=(Button)findViewById(R.id.button1); btn2=(Button)findViewById(R.id.button2); listview=(ListView)findViewById(R.id.lv); dbhelper=new MyOpenHelper(MainActivity.this, "myDict.db10", 1); Cursor cursor=dbhelper.getReadableDatabase().rawQuery("select * from contacts", null); inflateList(cursor); btn1.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Intent intent=new Intent(); intent.setClass(MainActivity.this, BaocunActivity.class); startActivity(intent); MainActivity.this.finish(); } }); btn2.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Intent intent=new Intent(); intent.setClass(MainActivity.this, shanchuActivity.class); startActivity(intent); MainActivity.this.finish(); } }); } private void inflateList(Cursor cursor) { SimpleCursorAdapter simpleCursorAdapter=new SimpleCursorAdapter(MainActivity.this, R.layout.lian, cursor, new String[]{"name","phone"}, new int[]{R.id.text1,R.id.text2}, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER); listview.setAdapter(simpleCursorAdapter); listview.setOnItemClickListener(new ItemClickListener()); } private final class ItemClickListener implements OnItemClickListener{ public void onItemClick(AdapterView<?> parent, View view, int position, long id) { ListView listview = (ListView) parent; Cursor cursor1 = (Cursor) listview.getItemAtPosition(position); String personid = cursor1.getString(cursor1.getColumnIndex("name")); String personid1 = cursor1.getString(cursor1.getColumnIndex("phone")); String personid2 = cursor1.getString(cursor1.getColumnIndex("mobile")); String personid3 = cursor1.getString(cursor1.getColumnIndex("email")); String personid4 = cursor1.getString(cursor1.getColumnIndex("post")); String personid5 = cursor1.getString(cursor1.getColumnIndex("addr")); String personid6 = cursor1.getString(cursor1.getColumnIndex("comp")); Intent intent=new Intent(); intent.putExtra("username1",personid); intent.putExtra("userphone1",personid1); intent.putExtra("usermobile1",personid2); intent.putExtra("useremail1",personid3); intent.putExtra("userpost1",personid4); intent.putExtra("useraddr1",personid5); intent.putExtra("usercomp1",personid6); intent.setClass(MainActivity.this, DetailActivity.class); startActivity(intent); MainActivity.this.finish(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } } package com.example.tongxunlu; import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.os.Bundle; import android.support.v4.widget.CursorAdapter; import android.support.v4.widget.SimpleCursorAdapter; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.Button; import android.widget.ListView; import android.widget.Toast; import android.widget.AdapterView.OnItemClickListener; public class shanchuActivity extends Activity { Button btn; ListView listview1; Cursor cursor; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.shanchu); listview1=(ListView)findViewById(R.id.lv1); btn=(Button)findViewById(R.id.btn2); cursor=MainActivity.dbhelper.getReadableDatabase().rawQuery("select * from contacts", null); inflateList(cursor); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Intent intent=new Intent(); intent.setClass(shanchuActivity.this,MainActivity.class); startActivity(intent); shanchuActivity.this.finish(); } }); } private void inflateList(Cursor cursor) { SimpleCursorAdapter simpleCursorAdapter=new SimpleCursorAdapter(shanchuActivity.this, R.layout.lian, cursor, new String[]{"name","phone"}, new int[]{R.id.text1,R.id.text2}, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER); listview1.setAdapter(simpleCursorAdapter); listview1.setOnItemClickListener(new ItemClickListener()); } private final class ItemClickListener implements OnItemClickListener{ public void onItemClick(AdapterView<?> parent, View view, int position, long id) { ListView listview = (ListView) parent; Cursor cursor1 = (Cursor) listview.getItemAtPosition(position); String personid = cursor1.getString(cursor1.getColumnIndex("name")); SQLiteDatabase db = MainActivity.dbhelper.getWritableDatabase(); db.delete("contacts", "name="+"‘"+personid+"‘", null); db.close(); Toast.makeText(shanchuActivity.this, "删除成功！", Toast.LENGTH_LONG).show(); inflateList(cursor); } } public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } } package com.example.tongxunlu; import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.support.v4.widget.CursorAdapter; import android.support.v4.widget.SimpleCursorAdapter; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.Toast; public class BaocunActivity extends Activity{ EditText editTextNAME,editTextPHONE,editTextMOBILE,editTextEMAIL,editTextPOST,editTextADDR,editTextCOMP; ListView listview; Button btn,btn1; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.baocun); btn=(Button)findViewById(R.id.button1); btn1=(Button)findViewById(R.id.button2); editTextNAME=(EditText)findViewById(R.id.editText1); editTextPHONE=(EditText)findViewById(R.id.editText2); editTextMOBILE=(EditText)findViewById(R.id.editText3); editTextEMAIL=(EditText)findViewById(R.id.editText4); editTextPOST=(EditText)findViewById(R.id.editText5); editTextADDR=(EditText)findViewById(R.id.editText6); editTextCOMP=(EditText)findViewById(R.id.editText7); listview=(ListView)findViewById(R.id.lv); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { String name,phone,mobile,email,post,addr,comp; name=editTextNAME.getText().toString(); phone=editTextPHONE.getText().toString(); mobile=editTextMOBILE.getText().toString(); email=editTextEMAIL.getText().toString(); post=editTextPOST.getText().toString(); addr=editTextADDR.getText().toString(); comp=editTextCOMP.getText().toString(); MainActivity.dbhelper.getReadableDatabase().execSQL("insert into contacts values(null,?,?,?,?,?,?,?)",new String[]{name,phone,mobile,email,post,addr,comp}); Toast.makeText(BaocunActivity.this, "保存成功！", Toast.LENGTH_LONG).show(); } }); btn1.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Intent intent=new Intent(); intent.setClass(BaocunActivity.this,MainActivity.class); startActivity(intent); BaocunActivity.this.finish(); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }
运行结果：（截图）
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五、实验总结（对本实验结果进行分析，实验心得体会及改进意见） |
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这次实验老师在上课的时候教过sql，但是这个实验太难，所以实现起来感觉超级难，而且前面的知识又忘了，在设计通讯录的过程中，出现了很多错误，还是要百度解决问题。 |
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实验评语 |
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实验成绩 |
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指导教师签名： 年 月 日 |
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原文地址：http://www.cnblogs.com/woaiQ1314/p/5487568.html
