課程名稱java |
基於Android平臺移動互聯網開發android |
實驗日期sql |
2016年5月6日數據庫 |
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實驗項目名稱數據結構 |
SQLite數據庫操做app |
實驗地點ide |
S30010佈局 |
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實驗類型post |
□驗證型 √設計型 □綜合型this |
學 時 |
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1、實驗目的及要求(本實驗所涉及並要求掌握的知識點) |
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2、實驗環境(本實驗所使用的硬件設備和相關軟件) |
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(1)PC機 (2)操做系統:Windows XP (3)軟件: Eclipse, JDK1.6,Android SDK,ADT |
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3、實驗內容及步驟 |
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(1) 肯定數據庫的數據結構。 (2) 新建工程,修改佈局文件,定義字符串資源。 (3) 開發佈局文件activity_main.xml用於顯示聯繫人列表。 (4) layout目錄下新建一個detail.xml,用於顯示聯繫人詳細信息。 (5) 開發數據庫輔助類MyOpenHelper類 (6) DetailActivity端開發實現數據庫增長、刪除、修改記錄等操做 (7) 新建Activity名爲DetailActivity.java,實現聯繫人詳細信息顯示功能。
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4、實驗結果(本實驗源程序清單及運行結果或實驗結論、實驗設計圖) |
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代碼: detail.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="0.00" android:orientation="horizontal" > <TextView android:id="@+id/tname" android:layout_width="77dp" android:layout_height="wrap_content" android:text=" 姓名: " android:textSize="18dp" /> <EditText android:id="@+id/ename" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:ems="10" android:inputType="textPersonName" > <requestFocus /> </EditText> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <TextView android:id="@+id/tguhua" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="固定電話:" android:textSize="18dp" /> <EditText android:id="@+id/eguhua" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:ems="10" android:inputType="phone" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="0.00" android:orientation="horizontal" > <TextView android:id="@+id/tshouji" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="0.00" android:text="移動電話:" android:textSize="18dp"/> <EditText android:id="@+id/eshouji" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="0.00" android:ems="10" android:inputType="phone" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="0.00" android:orientation="horizontal" > <TextView android:id="@+id/temail" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="電子郵件:" android:textSize="18dp"/> <EditText android:id="@+id/eemail" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:ems="10" android:inputType="textEmailAddress" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="0.00" android:orientation="horizontal" > <TextView android:id="@+id/tpost" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="郵政編碼:" android:textSize="18dp" /> <EditText android:id="@+id/epost" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:ems="10" android:inputType="number" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="0.00" android:orientation="horizontal" > <TextView android:id="@+id/tadress" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="通信地址:" android:textSize="18dp"/> <EditText android:id="@+id/eadress" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:ems="10" android:inputType="textPostalAddress" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="0.00" android:orientation="horizontal" > <TextView android:id="@+id/tgongsi" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="公司名稱:" android:textSize="18dp"/> <EditText android:id="@+id/egongsi" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:ems="10" /> </LinearLayout> <Button android:id="@+id/btnsave" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="保存" /> </LinearLayout> Myopenhelper.java package com.example.contacts; import android.R.string; import android.app.Activity; import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteDatabase.CursorFactory; import android.database.sqlite.SQLiteOpenHelper; import android.util.Log; public class Myopenhelper extends SQLiteOpenHelper{ public static final String DB_NAME="personal_contacts"; //數據庫文件名 public static final String TABLE_NAME="contacts"; //表名 public static final String ID="id"; //ID public static final String NAME="name"; //名稱 public static final String PHONE="phone"; //固話 public static final String MOBTLE="mobile"; //手機 public static final String EMAIL="email"; //email public static final String POST="post"; //郵編 public static final String ADD="address"; //地址 public static final String GONGSI="gongsi"; //公司 public Myopenhelper(Context context, String name, CursorFactory factory, int version) { super(context, name, factory, version); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL("creat table id no exists"+TABLE_NAME+"(" +ID+"integer primary key," +NAME+"varchar," +PHONE+"varchar," +MOBTLE+"varchar," +EMAIL+"varchar," +POST+"varchar," +ADD+"varchar," +GONGSI+"varchar)"); } @Override public void onUpgrade(SQLiteDatabase db, int arg1, int arg2) { db.execSQL("if exists"+TABLE_NAME); onCreate(db); Log.e("Datsbase", "onUpgrade"); } } DetailActivity.java package com.example.contacts; import android.app.Activity; import android.content.ContentValues; import android.content.Intent; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class DetailActivity extends Activity { EditText ename, eguhua, eshouji, eemail, epost, eadress, egongsi; String name, guhua, shouji, email, post, adress, gongsi; Button btnsave; SQLiteDatabase userdatabase; Bundle bd; String selectname; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.detail); btnsave = (Button) findViewById(R.id.btnsave); ename = (EditText) findViewById(R.id.ename); eguhua = (EditText) findViewById(R.id.eguhua); eshouji = (EditText) findViewById(R.id.eshouji); eemail = (EditText) findViewById(R.id.eemail); epost = (EditText) findViewById(R.id.epost); eadress = (EditText) findViewById(R.id.eadress); egongsi = (EditText) findViewById(R.id.egongsi); bd = getIntent().getExtras(); if (!bd.getString("name").equals("")) { selectname = bd.getString("name"); Cursor cursor = userdatabase.rawQuery( "select * from userTable where name=?", new String[] { selectname }); cursor.moveToFirst(); ename.setText(cursor.getString(cursor.getColumnIndex("name"))); eguhua.setText(cursor.getString(cursor.getColumnIndex("guhua"))); eshouji.setText(cursor.getString(cursor.getColumnIndex("shouji"))); eemail.setText(cursor.getString(cursor.getColumnIndex("email"))); epost.setText(cursor.getString(cursor.getColumnIndex("post"))); eadress.setText(cursor.getString(cursor.getColumnIndex("adress"))); egongsi.setText(cursor.getString(cursor.getColumnIndex("gongsi"))); btnsave.setText("保存"); } btnsave.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub name = ename.getText().toString(); guhua = eguhua.getText().toString(); shouji = eshouji.getText().toString(); email = eemail.getText().toString(); post = epost.getText().toString(); adress = eadress.getText().toString(); gongsi = egongsi.getText().toString(); if (!name.equals("") && !guhua.equals("") && !shouji.equals("") && !email.equals("") && !post.equals("") && !adress.equals("") && !gongsi.equals("")) { Cursor cursor = userdatabase.rawQuery( "select * from userTable where name=?", new String[] { name }); cursor.moveToFirst(); ContentValues cv = new ContentValues(); cv.put("name", name); cv.put("phone", guhua); cv.put("mobile", shouji); cv.put("email", email); cv.put("post", post); cv.put("addr", adress); cv.put("comp", gongsi); if (cursor.getCount() <= 0) { userdatabase.insert("userTable", null, cv); cv.clear(); Toast.makeText(DetailActivity.this, "保存" + name + "成功", Toast.LENGTH_LONG).show(); userdatabase.delete("userTable", "name=?", new String[] { selectname }); Intent it = new Intent(); it.setClass(DetailActivity.this, MainActivity.class); startActivity(it); finish(); } else if (cursor.getCount() == 1 && cursor.getString(cursor.getColumnIndex("name")) .equals(selectname)) { userdatabase.update("userTable", cv, "name=?", new String[] { selectname }); cv.clear(); Toast.makeText(DetailActivity.this, "更新" + name + "成功", Toast.LENGTH_LONG).show(); Intent it = new Intent(); it.setClass(DetailActivity.this, MainActivity.class); startActivity(it); finish(); } else { Toast.makeText(DetailActivity.this, name + "已註冊", Toast.LENGTH_LONG).show(); } } else { Toast.makeText(DetailActivity.this, "信息不完整", Toast.LENGTH_LONG).show(); } } }); } } MainActivity.java package com.example.contacts; import java.util.ArrayList; import java.util.HashMap; import android.os.Bundle; import android.app.Activity; import android.content.Intent; 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; import android.widget.SimpleAdapter; public class MainActivity extends Activity { private ListView lv; private Button addbtn; private Button deletebtn; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); addbtn=(Button)findViewById(R.id.button1); addbtn.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { Intent intent2=new Intent(); intent2.setClass(MainActivity.this, DetailActivity.class); startActivity(intent2); finish(); } }); deletebtn=(Button) findViewById(R.id.button2); deletebtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub // db.delete("contacts","name=?",new string[]{s}); } }); } } @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; } }
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5、實驗總結(對本實驗結果進行分析,實驗心得體會及改進意見) |
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此次的實驗沒有成功。 |