android中跨项目的数据库操作ContentProvider的使用

RuiXin.java类

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package com.gtl.data.two; 
 
import android.net.Uri; 
 
public class RuiXin { 
     
    public static final String DBNAME = "ruixinonlinedb";  
    public static final String TNAME = "ruixinonline"; 
    public static final int VERSION = 3; 
     
    public static String TID = "tid"; 
    public static final String USERNAME = "username"; 
    public static final String DATE = "date"; 
    public static final String SEX = "易做图"; 
     
    public static final String AUTOHORITY = "com.gtl.data.two"; 
    public static final int ITEM = 1; 
    public static final int ITEM_ID = 2; 
     
    public static final String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.ruixin.login"; 
    public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/vnd.ruixin.login"; 
     
    public static final Uri CONTENT_URI = Uri.parse("content://" + AUTOHORITY + "/ruixinonline"); 
} 

package com.gtl.data.two;

import android.net.Uri;

public class RuiXin {
 
 public static final String DBNAME = "ruixinonlinedb";
    public static final String TNAME = "ruixinonline";
    public static final int VERSION = 3;
   
    public static String TID = "tid";
    public static final String USERNAME = "username";
    public static final String DATE = "date";
    public static final String SEX = "易做图";
   
    public static final String AUTOHORITY = "com.gtl.data.two";
    public static final int ITEM = 1;
    public static final int ITEM_ID = 2;
   
    public static final String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.ruixin.login";
    public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/vnd.ruixin.login";
   
    public static final Uri CONTENT_URI = Uri.parse("content://" + AUTOHORITY + "/ruixinonline");
}

DBlite.java类

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package com.gtl.data.two; 
 
import android.content.ContentValues; 
import android.content.Context; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 
 
public class DBlite extends SQLiteOpenHelper { 
 
    public DBlite(Context context) { 
        super(context, RuiXin.DBNAME, null, RuiXin.VERSION); 
    } 
 
    @Override 
    public void onCreate(SQLiteDatabase db) { 
        db.execSQL("create table "+RuiXin.TNAME+"(" + 
                 RuiXin.TID+" integer primary key autoincrement not null,"+ 
                 RuiXin.USERNAME+" text not null," + 
                 RuiXin.DATE+" interger not null,"+ 
                 RuiXin.SEX+" text not null);"); 
 
    } 
 
    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
        db.execSQL("DROP TABLE IF EXISTS "+RuiXin.TNAME); 
        onCreate(db); 
    } 
     
    public void add(String username,String date,String 易做图){ 
        SQLiteDatabase db = getWritableDatabase(); 
        ContentValues values = new ContentValues(); 
        values.put(RuiXin.USERNAME, username); 
        values.put(RuiXin.DATE, date); 
        values.put(RuiXin.SEX, 易做图); 
        db.insert(RuiXin.TNAME,"",values); 
    } 
     
    public void del(){ 
         SQLiteDatabase db = getWritableDatabase(); 
         db.delete(RuiXin.TNAME,RuiXin.DATE+"=?" , new String[]{"time=1368497000287"}); 
    } 
     
    public void update(){ 
        SQLiteDatabase db = getWritableDatabase(); 
        ContentValues values = new ContentValues(); 
        values.put(RuiXin.USERNAME, "louis koo"); 
        values.put(RuiXin.DATE, "today"); 
        values.put(RuiXin.SEX, "男"); 
        db.update(RuiXin.TNAME, values, RuiXin.DATE+"=?" , new String[]{"time=1368497006097"}); 
    } 
} 

package com.gtl.data.two;

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

public class DBlite extends SQLiteOpenHelper {

 public DBlite(Context context) {
  super(context, RuiXin.DBNAME, null, RuiXin.VERSION);
 }

 @Override
 public void onCreate(SQLiteDatabase db) {
  db.execSQL("create table "+RuiXin.TNAME+"(" +
                 RuiXin.TID+" integer primary key autoincrement not null,"+
                 RuiXin.USERNAME+" text not null," +
                 RuiXin.DATE+" interger not null,"+
                 RuiXin.SEX+" text not null);");

 }

 @Override
 public

补充：移动开发 , Android ,

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