Question

嗨，我是Android开发的新手，需要帮助将我的数据插入MYSQLite数据库，有人可以帮我理解问题谢谢使用log cat，这是它给我的错误

05-02 18：53：05.087：I / Database（331）：sqlite返回：错误代码= 1，msg =表可疑没有列名为other 05-02 18：53：05.097：E / Database（331）：插入其他错误= 8 - 14国籍=身高= 8 - 14年龄=姓名=怀疑=性别=男性头发= V @ N

package com.example.sherlock;

import java.util.List;

import android.app.Activity;
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.Spinner;

public class Database extends Activity implements OnClickListener {

private EditText nametxt;
private Spinner gender;
private Spinner age;
private EditText hairtxt;
private EditText heighttxt;
private EditText nationalitytxt;
private EditText othertxt;
private Spinner suspecttype;
private Button submitbtn;
private Button clearbtn;


//called when activity is created
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_database);

nametxt =(EditText) findViewById(R.id.nametxt);
gender =(Spinner) findViewById(R.id.gender);
age =(Spinner) findViewById(R.id.age);
hairtxt =(EditText) findViewById(R.id.hairtxt);
heighttxt =(EditText) findViewById(R.id.heighttxt);
nationalitytxt =(EditText) findViewById(R.id.nationalitytxt);
othertxt =(EditText) findViewById(R.id.othertxt);
suspecttype =(Spinner) findViewById(R.id.age);

submitbtn =(Button)findViewById(R.id.submitbtn);
submitbtn.setOnClickListener(this);
clearbtn =(Button)findViewById(R.id.clearbtn);
clearbtn.setOnClickListener(this);
}

public void onClick(View v){

   if(v.getId ()==R.id.submitbtn){
  String providenametxt = nametxt.getText().toString();
  String providegender = gender.getSelectedItem().toString();
  String provideage = age.getSelectedItem().toString();
  String providehairtxt = hairtxt.getText().toString();
  String provideheighttxt = heighttxt.getText().toString();
  String providenationalitytxt = nationalitytxt.getText().toString();
  String provideothertxt = othertxt.getText().toString();
  String providesuspecttype = suspecttype.getSelectedItem().toString();


  DBAdapter db = new DBAdapter(this);
  db.addSuspect(new Suspects( providenametxt, providegender, 
  provideage, providehairtxt,                   
  provideheighttxt, providenationalitytxt, 
  provideothertxt, providesuspecttype));
  //reading all contacts
  Log.d("Reading: ", "Reading all Contacts..");
  List<Suspects> suspects = db.getAllSuspects();

  for (Suspects cn : suspects) {
   String log = "Id: "+ cn.getID() +" ,Name: " + cn.getName() 
   +" ,Gender: " +    cn.getGender()  +" ,Age: " + cn.getAge()
   +" ,Hair: " + cn.getHair() +" ,Height: " + cn.getHeight()
   +" ,Nationality: " + cn.getNationality() +" ,Other: " + cn.getOther() 
   +" ,Suspecttype: " + cn.getSuspect();
  //Writing contacts to log
  Log.d("Name: ", log);
   }
   //release from existing UI
   db.close();
  finish();
  }
  }
  }

将对DBAdapter

package com.example.sherlock;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import java.util.ArrayList;
import java.util.List;

public class DBAdapter extends SQLiteOpenHelper {
public static final String KEY_ROWID = "id";
public static final String KEY_NAME = "name";
public static final String KEY_GENDER = "gender";
public static final String KEY_HEIGHT = "height";
public static final String KEY_AGE = "age";
public static final String KEY_HAIR = "hair";
public static final String KEY_NATIONALITY = "nationality";
public static final String KEY_SUSPECT = "suspect";
public static final String KEY_OTHER = "other";

private static final String DATABASE_NAME = "SuspectDB";
private static final String TABLE_SUSPECTS = "suspect";
private static final int DATABASE_VERSION = 1;


 public DBAdapter(Context context) {
       super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

//create tables
 @Override
 public void onCreate(SQLiteDatabase db) {
        String CREATE_Suspects_TABLE = "CREATE TABLE " + TABLE_SUSPECTS + "("
                + KEY_ROWID + " INTEGER PRIMARY KEY," 
                + KEY_NAME + " TEXT,"
                + KEY_GENDER + " TEXT," 
                + KEY_HEIGHT + "TEXT,"  
                + KEY_AGE + "TEXT," 
                + KEY_HAIR + "TEXT," 
                + KEY_NATIONALITY + "TEXT,"
                + KEY_SUSPECT + "TEXT," 
                + KEY_OTHER + "TEXT" +")";
        db.execSQL(CREATE_Suspects_TABLE);
    }
// Upgrading database
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // Drop older table if existed
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_SUSPECTS);

        // Create tables again
        onCreate(db);
    }
    /**
     * All CRUD(Create, Read, Update, Delete) Operations
     */

    // Adding new suspect
    void addSuspect(Suspects suspects) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(KEY_NAME, suspects.getName()); // Contact Name
        values.put(KEY_GENDER, suspects.getGender());
        values.put(KEY_HEIGHT, suspects.getHeight());
        values.put(KEY_AGE, suspects.getAge());
        values.put(KEY_HAIR, suspects.getHair());
        values.put(KEY_NATIONALITY, suspects.getNationality());
        values.put(KEY_SUSPECT, suspects.getSuspect());
        values.put(KEY_OTHER, suspects.getOther());

        // Inserting Row
        db.insert(TABLE_SUSPECTS, null, values);
        db.close(); // Closing database connection
    }

    // Getting single contact
    Suspects getSuspect(int id) {
        SQLiteDatabase db = this.getReadableDatabase();

        Cursor cursor = db.query(TABLE_SUSPECTS, new String[] { KEY_ROWID,
                KEY_NAME, KEY_GENDER, KEY_HEIGHT,
   KEY_AGE, KEY_HAIR,KEY_NATIONALITY,KEY_SUSPECT,
  KEY_OTHER }, KEY_ROWID + "=?",
                new String[] { String.valueOf(id) }, null, null, null, null);
        if (cursor != null)
            cursor.moveToFirst();

        Suspects suspect = new Suspects(Integer.parseInt(cursor.getString(0)),
                cursor.getString(1),
                cursor.getString(2),
                cursor.getString(3),
                cursor.getString(4),
                cursor.getString(5),
                cursor.getString(6),
                cursor.getString(7),
                cursor.getString(8));
        // return suspect
        return suspect;
    }

    // Getting All suspects
    public List<Suspects> getAllSuspects() {
        List<Suspects> SuspectsList = new ArrayList<Suspects>();
        // Select All Query
        String selectQuery = "SELECT  * FROM " + TABLE_SUSPECTS;

        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);

        // looping through all rows and adding to list
        if (cursor.moveToFirst()) {
            do {
                Suspects suspect = new Suspects();
                suspect.setID(Integer.parseInt(cursor.getString(0)));
                suspect.setName(cursor.getString(1));
                suspect.setGender(cursor.getString(2));
                suspect.setHeight(cursor.getString(3));
                suspect.setAge(cursor.getString(4));
                suspect.setHair(cursor.getString(5));
                suspect.setNationality(cursor.getString(6));
                suspect.setSuspect(cursor.getString(7));
                suspect.setOther(cursor.getString(8));

       // Adding contact to list
                SuspectsList.add(suspect);
            } while (cursor.moveToNext());
        }

        // return Suspect list
        return SuspectsList;
    }

    // Updating single Suspect
    public int updateSuspects(Suspects suspect) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(KEY_NAME, suspect.getName());
        values.put(KEY_GENDER, suspect.getGender());
        values.put(KEY_HEIGHT, suspect.getHeight());
        values.put(KEY_AGE, suspect.getAge());
        values.put(KEY_HAIR, suspect.getHair());
        values.put(KEY_NATIONALITY, suspect.getNationality());
        values.put(KEY_SUSPECT, suspect.getSuspect());
        values.put(KEY_OTHER, suspect.getOther());

        // updating row
        return db.update(TABLE_SUSPECTS, values, KEY_ROWID + " = ?",
                new String[] { String.valueOf(suspect.getID()) });
    }

    // Deleting single suspect
    public void deleteSuspect(Suspects suspect) {
        SQLiteDatabase db = this.getWritableDatabase();
        db.delete(TABLE_SUSPECTS, KEY_ROWID + " = ?",
                new String[] { String.valueOf(suspect.getID()) });
        db.close();
    }


    // Getting suspect Count
    public int getSuspectsCount() {
        String countQuery = "SELECT  * FROM " + TABLE_SUSPECTS;
        SQLiteDatabase db = this.getReadableDatabase();
        Cursor cursor = db.rawQuery(countQuery, null);
        cursor.close();

        // return count
        return cursor.getCount();
    }    
}

Answer 1

在表中，suspect没有名为other的列。我认为您应该删除数据库文件并再次运行应用程序或更新数据库。

Answer 2

修复错误必须将数据库重命名为suspectsDB

将数据插入sqlite数据库时遇到问题

2 个答案: