Android SQLite數據庫不能正常工作

我正在開發我的第一個SQLite數據庫應用程序，經過兩天的努力，我終於向專業人士尋求幫助。Android SQLite數據庫不能正常工作

當試圖在文本視圖中顯示數據時（getNurseData方法），我收到了強制關閉。另外，我不認爲createEntry方法也可以，因爲在調用該方法之後，我嘗試使用setText("");調用清除EditText控件，但控件未清除。

這裏的DbCommunicator類：

package com.deadEddie.staffingmanagement; 

import android.app.Dialog; 
import android.content.ContentValues; 
import android.content.Context; 
import android.database.Cursor; 
import android.database.SQLException; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteDatabase.CursorFactory; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.widget.TextView; 

public class DbCommunicator { 
// create fields for nurses table 
public static final String KEY_NURSE_ROWID = "_id"; 
public static final String KEY_LNAME = "_lName"; 
public static final String KEY_FNAME = "_fName"; 
public static final String KEY_EMAIL = "_eMail"; 
public static final String KEY_PHONE_PRIMARY = "_priPhone"; 
public static final String KEY_PHONE_SECONDARY = "_secPhone"; 
public static final String KEY_FTE = "_fte"; 
public static final String KEY_DUTY_STATUS = "Off Duty"; 

// create fields for rooms table 
public static final String KEY_ROOM_ROWID = "_id"; 
public static final String KEY_TYPE_PATIENT = "_id"; 
public static final String KEY_OCCUPIED = "NO"; 
public static final String KEY_ROOM_NUMBER = "_id"; 

// database values 
public static final String DATABASE_NAME = "Staffing_Assignments"; 
public static final String NURSE_TABLE = "Nurse_Table"; 
public static final String ROOM_TABLE = "Room_Table"; 
public static final int DATABASE_VERSION = 1; 

private DbHelper databaseHelper; 
private final Context dbContext; 
private SQLiteDatabase sqldb; 

private static class DbHelper extends SQLiteOpenHelper 
{ 

    public DbHelper(Context context) { 
     super(context, DATABASE_NAME, null, DATABASE_VERSION); 
     // TODO Auto-generated constructor stub 
    } 

    // create database if it does not already exist 
    @Override 
    public void onCreate(SQLiteDatabase db) { 
     // TODO Auto-generated method stub 
     db.execSQL("CREATE TABLE " + NURSE_TABLE + " (" + KEY_NURSE_ROWID 
       + "INTEGER PRIMARY KEY AUTOINCREMENT " + KEY_LNAME 
       + "TEXT NOT NULL" + KEY_FNAME + "TEXT NOT NULL" + KEY_EMAIL 
       + "TEXT NOT NULL" + KEY_PHONE_PRIMARY + "TEXT NOT NULL" 
       + KEY_PHONE_SECONDARY + "TEXT" + KEY_DUTY_STATUS 
       + "TEXT NOT NULL);"); 

     db.execSQL("CREATE TABLE " + ROOM_TABLE + " (" + KEY_ROOM_ROWID 
       + " INTEGER PRIMARY KEY AUTOINCREMENT " + KEY_TYPE_PATIENT 
       + " TEXT" + KEY_OCCUPIED + " TEXT NOT NULL" + KEY_ROOM_NUMBER 
       + " TEXT NOT NULL);"); 
    } // onCreate 

    // upgrade existing database 
    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) 
    { 
     // TODO Auto-generated method stub 
     db.execSQL("DROP TABLE IF EXISTS " + NURSE_TABLE); 
     db.execSQL("DROP TABLE IF EXISTS " + ROOM_TABLE); 
     onCreate(db); 
    } 

} // DbHelper class 

public DbCommunicator(Context c) { 
    dbContext = c; 
} 

public void close() { 
    databaseHelper.close(); 
} 

public DbCommunicator open() throws SQLException { 
    databaseHelper = new DbHelper(dbContext); 
    sqldb = databaseHelper.getWritableDatabase(); 
    return this; 
} 

public long createEntry(String nurseLname, String nurseFname, 
     String nurseEmail, String priPhone, String secPhone, String nurseFTE) { 
    // TODO Auto-generated method stub 
    ContentValues cvCreate = new ContentValues(); 
    cvCreate.put(KEY_LNAME, nurseLname); 
    cvCreate.put(KEY_FNAME, nurseFname); 
    cvCreate.put(KEY_EMAIL, nurseEmail); 
    cvCreate.put(KEY_PHONE_PRIMARY, priPhone); 
    cvCreate.put(KEY_PHONE_SECONDARY, secPhone); 
    cvCreate.put(KEY_FTE, nurseFTE); 

    return sqldb.insert(NURSE_TABLE, null, cvCreate); 

} 

public String getNurseData() { 
    // TODO Auto-generated method stub 
    String[] columns = new String[] { KEY_NURSE_ROWID, KEY_LNAME, KEY_FNAME, 
      KEY_EMAIL, KEY_PHONE_PRIMARY, KEY_PHONE_SECONDARY }; 
    Cursor c = sqldb.query(NURSE_TABLE, columns, null, null, null, 
      null, null); 
    String result = ""; 

    int iRow = c.getColumnIndex(KEY_NURSE_ROWID); 
    int iLname = c.getColumnIndex(KEY_LNAME); 
    int iFname = c.getColumnIndex(KEY_FNAME); 
    int iEmail = c.getColumnIndex(KEY_EMAIL); 
    int iPriPhone = c.getColumnIndex(KEY_PHONE_PRIMARY); 
    int iSecPhone = c.getColumnIndex(KEY_PHONE_SECONDARY); 
    int iDutyStatus = c.getColumnIndex(KEY_DUTY_STATUS); 


    for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) { 
     result = result + " " + c.getString(iRow) + " " 
       + c.getString(iLname) + " " 
       + c.getString(iFname) + " " 
       + c.getString(iPriPhone) + " " + c.getString(iSecPhone) + " " 
       + c.getString(iEmail) + " " + c.getString(iDutyStatus) + "\n"; 
    } 
    c.deactivate(); 
    c.close(); 
    return result; 
} 

}// DbCommunicator class

這裏的NursingAssignments類，試圖從getNurseData方法填補一個TextView：

package com.deadEddie.staffingmanagement; 

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

public class NursingAssignments extends Activity implements OnClickListener 
{ 
Button addNurse; 
Button removeNurse; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.nurse_assignments); 
    displayNursingData(); 

    // set variable values and OnClickListeners 
    addNurse = (Button) findViewById(R.id.btnAddToRoster); 
    removeNurse = (Button) findViewById(R.id.btnRemoveFromRoster); 
    addNurse.setOnClickListener(this); 
    removeNurse.setOnClickListener(this); 
} 

@Override 
public void onClick(View arg0) { 
    // TODO Auto-generated method stub 
    switch (arg0.getId()) 
    { 
    case R.id.btnAddToRoster: 
     Intent add = new Intent("com.deadEddie.staffingmanagement.ADDNURSETOROSTER"); 
     startActivity(add); 
     break; 

    case R.id.btnRemoveFromRoster: 
     break; 
    } 
} 

public void displayNursingData() 
{ 
    TextView nurseRoster = (TextView) findViewById(R.id.tvSQLInfo); 
    DbCommunicator info = new DbCommunicator(this); 
    info.open(); 
    String data = info.getNurseData(); 
    info.close(); 
    nurseRoster.setText(data.toString()); 
} 

}

而這裏的AddNurseToRoster類，它試圖添加一個條目並清除EditText控件：

package com.deadEddie.staffingmanagement; 

import android.app.Activity; 
import android.app.Dialog; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

public class AddNurseToRoster extends Activity implements OnClickListener { 
Button add; 
Button cancel; 
EditText lastName; 
EditText firstName; 
EditText eMail; 
EditText primaryPhone; 
EditText secondaryPhone; 
EditText fte; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.add_nurse_to_roster); 
    setControlValues(); 
} 

private void setControlValues() { 
    add = (Button) findViewById(R.id.btnAdd); 
    cancel = (Button) findViewById(R.id.btnCancel); 
    lastName = (EditText) findViewById(R.id.etFname); 
    eMail = (EditText) findViewById(R.id.etEmail); 
    primaryPhone = (EditText) findViewById(R.id.etPrimaryPhone); 
    secondaryPhone = (EditText) findViewById(R.id.etSecondaryPhone); 
    fte = (EditText) findViewById(R.id.etFTE); 

} // setVariableValues 

@Override 
public void onClick(View v) { 
    // TODO Auto-generated method stub 
    switch (v.getId()) { 
    case R.id.btnAdd: 
     try { 
      String nurseLname = lastName.getText().toString(); 
      String nurseFname = firstName.getText().toString(); 
      String nurseEmail = eMail.getText().toString(); 
      String priPhone = primaryPhone.getText().toString(); 
      String secPhone = secondaryPhone.getText().toString(); 
      String nurseFTE = fte.getText().toString(); 
      DbCommunicator database = new DbCommunicator(this); 
      database.open(); 
      database.createEntry(nurseLname, nurseFname, nurseEmail, 
        priPhone, secPhone, nurseFTE); 
      database.close(); 
      lastName.setText(""); 
      firstName.setText(""); 
      eMail.setText(""); 
      primaryPhone.setText(""); 
      secondaryPhone.setText(""); 
      fte.setText(""); 

     } catch (Exception e) { 
      String error = e.toString(); 
      Dialog d = new Dialog(this); 
      d.setTitle("An Error Has Occurred"); 
      TextView tv = new TextView(this); 
      tv.setText(error); 
      d.setContentView(tv); 
      d.show(); 
     } 
     break; 

    case R.id.btnCancel: 
     break; 
    } 
} // onClickView 
}

我得到這個Logcat錯誤，但我不知道如何解決它。

08-23 14:31:25.156: E/AndroidRuntime(577): ERROR: thread attach failed 
08-23 14:31:32.545: E/Database(583): Failure 1 (AUTOINCREMENT is only allowed on an INTEGER PRIMARY KEY) on 0x136ea8 when preparing 'CREATE TABLE Nurse_Table (_idINTEGER PRIMARY KEY AUTOINCREMENT, _lNameTEXT NOT NULL,_fNameTEXT NOT NULL_eMailTEXT NOT NULL,_priPhoneTEXT NOT NULL,_secPhoneTEXT,Off DutyTEXT NOT NULL);'. 
08-23 14:31:32.555: E/AndroidRuntime(583): Uncaught handler: thread main exiting due to uncaught exception 
08-23 14:31:32.565: E/AndroidRuntime(583): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.deadEddie.staffingmanagement/com.deadEddie.staffingmanagement.NursingAssignments}: android.database.sqlite.SQLiteException: AUTOINCREMENT is only allowed on an INTEGER PRIMARY KEY: CREATE TABLE Nurse_Table (_idINTEGER PRIMARY KEY AUTOINCREMENT, _lNameTEXT NOT NULL,_fNameTEXT NOT NULL_eMailTEXT NOT NULL,_priPhoneTEXT NOT NULL,_secPhoneTEXT,Off DutyTEXT NOT NULL); 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.os.Handler.dispatchMessage(Handler.java:99) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.os.Looper.loop(Looper.java:123) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.app.ActivityThread.main(ActivityThread.java:4363) 
08-23 14:31:32.565: E/AndroidRuntime(583): at java.lang.reflect.Method.invokeNative(Native Method) 
08-23 14:31:32.565: E/AndroidRuntime(583): at java.lang.reflect.Method.invoke(Method.java:521) 
08-23 14:31:32.565: E/AndroidRuntime(583): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
08-23 14:31:32.565: E/AndroidRuntime(583): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
08-23 14:31:32.565: E/AndroidRuntime(583): at dalvik.system.NativeStart.main(Native Method) 
08-23 14:31:32.565: E/AndroidRuntime(583): Caused by: android.database.sqlite.SQLiteException: AUTOINCREMENT is only allowed on an INTEGER PRIMARY KEY: CREATE TABLE Nurse_Table (_idINTEGER PRIMARY KEY AUTOINCREMENT, _lNameTEXT NOT NULL,_fNameTEXT NOT NULL_eMailTEXT NOT NULL,_priPhoneTEXT NOT NULL,_secPhoneTEXT,Off DutyTEXT NOT NULL); 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.database.sqlite.SQLiteDatabase.native_execSQL(Native Method) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1610) 
08-23 14:31:32.565: E/AndroidRuntime(583): at com.deadEddie.staffingmanagement.DbCommunicator$DbHelper.onCreate(DbCommunicator.java:52) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:106) 
08-23 14:31:32.565: E/AndroidRuntime(583): at com.deadEddie.staffingmanagement.DbCommunicator.open(DbCommunicator.java:87) 
08-23 14:31:32.565: E/AndroidRuntime(583): at com.deadEddie.staffingmanagement.NursingAssignments.displayNursingData(NursingAssignments.java:52) 
08-23 14:31:32.565: E/AndroidRuntime(583): at com.deadEddie.staffingmanagement.NursingAssignments.onCreate(NursingAssignments.java:21) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
08-23 14:31:32.565: E/AndroidRuntime(583): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459) 
08-23 14:31:32.565: E/AndroidRuntime(583): ... 11 more 
08-23 14:31:32.575: E/dalvikvm(583): Unable to open stack trace file '/data/anr/traces.txt': Permission denied

DDMS輸出：

[2012-08-23 09:04:17 - StaffingManagement] New emulator found: emulator-5556 
[2012-08-23 09:04:17 - StaffingManagement] Waiting for HOME ('android.process.acore') to be launched... 
[2012-08-23 09:05:14 - StaffingManagement] HOME is up on device 'emulator-5556' 
[2012-08-23 09:05:14 - StaffingManagement] Uploading StaffingManagement.apk onto device 'emulator-5556' 
[2012-08-23 09:05:14 - StaffingManagement] Installing StaffingManagement.apk... 
[2012-08-23 09:05:24 - StaffingManagement] Success! 
[2012-08-23 09:05:24 - StaffingManagement] Starting activity com.deadEddie.staffingmanagement.MainActivity on device emulator-5556 
[2012-08-23 09:05:26 - StaffingManagement] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.deadEddie.staffingmanagement/.MainActivity }

來源

2012-08-23 deadEddie

兩天內你做到了這一點..好 – 2012-08-23 09:43:55

stacktrace請 – Sameer

檢查你的數據庫是否通過DDMS首先在android模擬器中創建 –

首先是...您的創建語句中列應該與devided 「」

db.execSQL("CREATE TABLE " + NURSE_TABLE + " (" + KEY_NURSE_ROWID + "INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_LNAME + "TEXT NOT NULL," + KEY_FNAME + "TEXT NOT NULL," + KEY_EMAIL + "TEXT NOT NULL," + KEY_PHONE_PRIMARY + "TEXT NOT NULL,"     + KEY_PHONE_SECONDARY + "TEXT," + KEY_DUTY_STATUS     + "TEXT NOT NULL);"); 

db.execSQL("CREATE TABLE " + ROOM_TABLE + " (" + KEY_ROOM_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_TYPE_PATIENT+ " TEXT," + KEY_OCCUPIED + " TEXT NOT NULL," + KEY_ROOM_NUMBER + " TEXT NOT NULL);");

我不認爲這創建聲明將工作沒有它...

來源

2012-08-23 09:47:41

謝謝，但沒有幫助。 – deadEddie

感謝道具dizworld，但它實際上是三個，一天建立，兩天擰開。哈哈 – deadEddie

雖然我確定逗號的幫助，但我也發現了一些其他問題，包括我爲字段名稱使用重複值的事實。由於發佈了所有答案和建議，因此接受您的答案，您的答案當然是最正確的。乾杯。 :) – deadEddie

Android SQLite數據庫不能正常工作

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