Question

我有ListView中从服务器获取的项目列表。我的问题是：如何将listview中显示的项目列表存储到Android Sqlite本地数据库？

Answer 1

尝试以下代码 -

首先，您必须创建DatabaseHandler类

DatabaseHandler.java -

package com.androidhive.androidsqlite;

import java.util.ArrayList;
import java.util.List;

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

public class DatabaseHandler extends SQLiteOpenHelper {

    // All Static variables
    // Database Version
    private static final int DATABASE_VERSION = 1;

    // Database Name
    private static final String DATABASE_NAME = "MyDatabase";

    // Database table name
    private static final String TABLE_LIST = "MyListItem";

    // Table Columns names
    private static final String KEY_ID = "id";
    private static final String KEY_ListItem = "listitem";

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

    // Creating Tables
    @Override
    public void onCreate(SQLiteDatabase db) {
        String CREATE_LIST_TABLE = "CREATE TABLE " + TABLE_LIST + "(" + KEY_ID
                + " INTEGER," + KEY_ListItem + " TEXT" + ")";

        db.execSQL(CREATE_LIST_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_LIST);

        // Create tables again
        onCreate(db);
    }



    void addListItem(ArrayList<String> listItem) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        for (int i = 0; i < listItem.size(); i++) {

            Log.e("vlaue inserting==", "" + listItem.get(i));
            values.put(KEY_ListItem, listItem.get(i));
            db.insert(TABLE_LIST, null, values);

        }

        db.close(); // Closing database connection
    }

    Cursor getListItem() {
        String selectQuery = "SELECT  * FROM " + TABLE_LIST;

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

        return cursor;
    }

}

MainActivity.java

package com.androidhive.androidsqlite;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.util.Log;

public class MainActivity extends Activity {
    /** Called when the activity is first created. */

    ArrayList<String> your_list_arrayArrayList;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        your_list_array ArrayList = new ArrayList<String>();

        your_list_arrayArrayList.add("Item1");
        your_list_arrayArrayList.add("Item2");
        your_list_arrayArrayList.add("Item3");
        your_list_arrayArrayList.add("Item4");
        your_list_arrayArrayList.add("Item5");

        DatabaseHandler db = new DatabaseHandler(this);

        db.addListItem(your_list_arrayArrayList);

        Cursor cursor = db.getListItem();

        Log.e("count", " " + cursor.getCount());
        if (cursor != null) {
            cursor.moveToNext();

            do {

                Log.e("value==", "" + cursor.getString(1));

            } while (cursor.moveToNext());
        }
    }
}

如果它无法正常工作，请告诉我，我会尽力帮助您。

Answer 2

只需获取所有项目列表并将其存储到SQLite数据库中。要将数据存储到SQLite数据库，请转到here

我想将listview中显示的项目列表存储到android Sqlite数据库

2 个答案: