java数据库中的数据如何在不同的活动中分配给数组？

1 年，2 月 Questions & Answers 50

我的项目的目的是，我想建立一个词汇卡。应用程序将给你一个英语单词，下面将有4个土耳其语单词（1个单词是真单词。Ex : hello= merhaba）。你会猜到真实的。我将使用array来实现这一点。是我错了还是你想给我一个建议
我一直在开发一个小项目。我想在不同的活动中使用数据库中的数据。我的数据与数据库中的数据类似：

ID  word   word_tr

1   hello  merhaba

2   hi     selam

我希望assin数据以不同的活动（WordsActivity）排列

阵列1

你好

嗨

阵列2

梅哈巴

塞勒姆 ...

这是我的代码：

package de.murattekinlive.pwords;

import 安卓.content.ContentValues;
import 安卓.content.Context;
import 安卓.database.Cursor;
import 安卓.database.sqlite.SQLiteDatabase;
import 安卓.database.sqlite.SQLiteOpenHelper;

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


public class DataBase extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_NAME = "DBWORDS";
private static final String TABLE_NAME  = "WTABLE";
private static final String ID  ="ID";
private static final String WORD   = "WORD";
private static final String WORD_TR1 = "TURKCE_1";


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

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

@Override
public void onCreate(SQLiteDatabase db) {
    String CREATE_DBTABLE = "CREATE TABLE " + TABLE_NAME + "(" + ID +" INTEGER PRIMARY KEY AUTOINCREMENT," +WORD+
            " TEXT," +WORD_TR1+" TEXT" + "  )";
    db.execSQL(CREATE_DBTABLE);
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    String TABLE_DELETE = "DROP TABLE IF EXISTS" + TABLE_NAME ;
    db.execSQL(TABLE_DELETE);
    onCreate(db);

}

    public long addRecord(Words words){
    SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();
    ContentValues contentValues = new ContentValues();
    contentValues.put(WORD,words.getWORD());
    contentValues.put(WORD_TR1,words.getTR1());
    long status = sqLiteDatabase.insert(TABLE_NAME,null,contentValues);
    sqLiteDatabase.close();
    return status;
}
    public List<Words> allRecords(){
    List<Words> wordsList = new ArrayList<>();
    String sql_query = "SELECT *FROM " + TABLE_NAME;
    SQLiteDatabase sqLiteDatabase =this.getWritableDatabase();
    Cursor cursor =sqLiteDatabase.rawQuery(sql_query,null);
    if(cursor.moveToFirst()){
        Words words =null;
        do{
            words = new Words();
            words.setID(cursor.getInt(0));
            words.setWORD(cursor.getString(1));
            words.setTR1(cursor.getString(2));
            wordsList.add(words);
        }while (cursor.moveToNext());
    }
    return wordsList;
}

public String getRandomQuote(){
    SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();
    Cursor cursor = sqLiteDatabase.query(TABLE_NAME + " ORDER BY RANDOM() LIMIT 1",new String[]
            {WORD,WORD_TR1},null,null,null,null,null);
    if(cursor.moveToFirst()){
        return
          cursor.getString(cursor.getColumnIndex(WORD))+
         cursor.getString(cursor.getColumnIndex(WORD_TR1));

    }
    else
        return "nothing";
}

}

我的wordActivity（我想用数据完成所有任务）

package de.murattekinlive.pwords;

import 安卓.content.Intent;
import 安卓.support.v7.app.AppCompatActivity;
import 安卓.os.Bundle;
import 安卓.widget.TextView;

import java.util.List;

public class WordsActivity extends AppCompatActivity {
TextView textView;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_words);
    textView = (TextView) findViewById(R.id.textView);
    Intent intent = getIntent();
    String random = intent.getStringExtra("random"); // this is just test...
    textView.setText("Number : " + random);


}

}

Python中文网

有 Java 编程相关的问题?

java数据库中的数据如何在不同的活动中分配给数组？

共 (1) 个答案

# 1 楼答案