在SQLite中添加表格android

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我正在研究如何在sqlite數據庫中添加表格以獲取更多信息，但我無法掌握它是如何實現的。在SQLite中添加表格android

我有這樣的代碼：

package com.example.database; 

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

public class SQLiteAdapter { 

public static final String MYDATABASE_NAME = "SCORING"; 
public static final String MYDATABASE_TABLE = "SCORING_TABLE"; 
public static final String MYDATABASE_TABLE1 = "Assessment"; 
public static final int MYDATABASE_VERSION = 3; 
public static final String KEY_ID = "_id"; 
public static final String KEY_CONTENT1 = "Content1"; 
public static final String KEY_CONTENT2 = "Content2"; 
public static final String KEY_CONTENT3 = "Content3"; 

//create table SCORING (ID integer primary key, Content text not null); 
private static final String SCRIPT_CREATE_DATABASE = 
    "create table " + MYDATABASE_TABLE + " (" 
    + KEY_ID + " integer primary key autoincrement, " 
    + KEY_CONTENT1 + " text not null, " 
    + KEY_CONTENT2 + " text not null, " 
    + KEY_CONTENT3 + "text not null);"; 

private SQLiteHelper sqLiteHelper; 
private SQLiteDatabase sqLiteDatabase; 

private Context context; 

public SQLiteAdapter(Context c){ 
    context = c; 
} 

public SQLiteAdapter openToRead() throws android.database.SQLException { 
    sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION); 
    sqLiteDatabase = sqLiteHelper.getReadableDatabase(); 
    return this; 
} 

public SQLiteAdapter openToWrite() throws android.database.SQLException { 
    sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION); 
    sqLiteDatabase = sqLiteHelper.getWritableDatabase(); 
    return this; 
} 

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

public long insert(String content1, String content2, String content3){ 

    ContentValues contentValues = new ContentValues(); 
    contentValues.put(KEY_CONTENT1, content1); 
    contentValues.put(KEY_CONTENT2, content2); 
    contentValues.put(KEY_CONTENT3, content3); 
    return sqLiteDatabase.insert(MYDATABASE_TABLE, null, contentValues); 
} 

public int deleteAll(){ 
    return sqLiteDatabase.delete(MYDATABASE_TABLE, null, null); 
} 

public Cursor queueAll(){ 
    String[] columns = new String[]{KEY_ID, KEY_CONTENT1, KEY_CONTENT2, KEY_CONTENT3}; 
    Cursor cursor = sqLiteDatabase.query(MYDATABASE_TABLE, columns, 
    null, null, null, null, null); 

    return cursor; 
} 

public class SQLiteHelper extends SQLiteOpenHelper { 

    public SQLiteHelper(Context context, String name, 
    CursorFactory factory, int version) { 
    super(context, name, factory, version); 
    } 

    @Override 
    public void onCreate(SQLiteDatabase db) { 
    // TODO Auto-generated method stub 
    db.execSQL(SCRIPT_CREATE_DATABASE); 
    } 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
    // TODO Auto-generated method stub 
// If you need to add a column 
    if (newVersion > oldVersion) { 
     db.execSQL("ALTER TABLE SCORING_TABLE ADD COLUMN Content4 TEXT"); 
    } 
    } 
} 
}

和第二個我有一個很難將數據輸入到第二個表

package com.example.database; 



import com.example.database.R; 
import android.app.Activity; 
import android.content.Intent; 
import android.database.Cursor; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ListView; 
import android.widget.SimpleCursorAdapter; 
import android.widget.TextView; 
import android.widget.Toast; 

public class AndroidSQLite extends Activity { 

EditText inputContent2; 
TextView textView1, textView2; 
Button buttonAdd, buttonDeleteAll; 

private SQLiteAdapter mySQLiteAdapter; 
ListView listContent; 

SimpleCursorAdapter cursorAdapter; 
Cursor cursor; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 


    textView1 = (TextView)findViewById(R.id.textView1); 
    textView2 = (TextView)findViewById(R.id.textView2); 
    inputContent2 = (EditText)findViewById(R.id.content2); 
    buttonAdd = (Button)findViewById(R.id.add); 
    buttonDeleteAll = (Button)findViewById(R.id.deleteall); 
     listContent = (ListView)findViewById(R.id.contentlist); 

    mySQLiteAdapter = new SQLiteAdapter(this); 
    mySQLiteAdapter.openToWrite(); 

    cursor = mySQLiteAdapter.queueAll(); 
    String[] from = new String[]{SQLiteAdapter.KEY_ID, SQLiteAdapter.KEY_CONTENT1,  SQLiteAdapter.KEY_CONTENT2, SQLiteAdapter.KEY_CONTENT3}; 
    int[] to = new int[]{R.id.id, R.id.text1, R.id.text2, R.id.text3}; 
    cursorAdapter = 
    new SimpleCursorAdapter(this, R.layout.row, cursor, from, to); 
    listContent.setAdapter(cursorAdapter); 

    buttonAdd.setOnClickListener(buttonAddOnClickListener); 
    buttonDeleteAll.setOnClickListener(buttonDeleteAllOnClickListener); 



    } 

    Button.OnClickListener buttonAddOnClickListener 
    = new Button.OnClickListener(){ 

    @Override 
    public void onClick(View arg0) { 
    // TODO Auto-generated method stub 
      int a=Integer.parseInt(textView1.getText().toString()); 
      int b=a+2; 
      String s1 = String.valueOf(b); 
      textView1.setText(s1); 
     Toast.makeText(getApplicationContext(), "Wrong", 
        Toast.LENGTH_SHORT).show(); 

    String data1 = textView1.getText().toString(); 
    String data2 = inputContent2.getText().toString(); 
    String data3 = textView2.getText().toString(); 
    mySQLiteAdapter.insert(data1, data2, data3); 
    updateList(); 



    } 

    }; 


    Button.OnClickListener buttonDeleteAllOnClickListener 
    = new Button.OnClickListener(){ 

    @Override 
    public void onClick(View arg0) { 
    // TODO Auto-generated method stub 
    mySQLiteAdapter.deleteAll(); 
    updateList(); 
    } 

    }; 

@Override 
protected void onDestroy() { 
    // TODO Auto-generated method stub 
    super.onDestroy(); 
    mySQLiteAdapter.close(); 
} 



private void updateList(){ 
    cursor.requery(); 
    } 

}

來源

2013-02-18 androidnoob