Question

您好我在这里看到了几个问题，但我没有找到一个真正能帮我解决这个问题的问题...我已经在Android应用程序中实现了一个SQLITE数据库，spinner已经从SQLITE获取了数据，但我有一个问题......当用户在第一个微调器中选择第一个选项时，我需要第二个微调器处于活动状态，因此第二个微调器将根据第一个选择加载内容...例如我有列名为“Modelos”并有2个选项“Modelo1”和“Modelo2”，当用户选择“Modelo1”时将在第二个微调器中显示X信息，当用户选择“Modelo2”时，它将在第二个微调器上显示y信息。 ..这是我的代码：

DBackend -

//Make the selection of the first spinner
public String[] getAllSpinnerContent(){

    String query = "Select Modelo from Modelos";
    Cursor cursor = this.getDbConnection().rawQuery(query, null);
    ArrayList<String> spinnerContent = new ArrayList<String>();
    if(cursor.moveToFirst()){
        do{
            String word = cursor.getString(cursor.getColumnIndexOrThrow("Modelo"));
            spinnerContent.add(word);
        }while(cursor.moveToNext());
    }
    cursor.close();

    String[] allSpinner = new String[spinnerContent.size()];
    allSpinner = spinnerContent.toArray(allSpinner);

    return allSpinner;
}


//Make the selection of second spinner

public String[] getAllApelidos () {

    String query = "Select Apelido from Modelos";
    Cursor cursor = this.getDbConnection().rawQuery(query, null);
    ArrayList<String> spinnerApelidos = new ArrayList<String>();

    if(cursor.moveToFirst()){
        do{
            String word = cursor.getString(cursor.getColumnIndexOrThrow("Apelido"));
            spinnerApelidos.add(word);
        } while (cursor.moveToNext());
    }

    cursor.close();

    String[] allApelidos = new String[spinnerApelidos.size()];
    allApelidos = spinnerApelidos.toArray(allApelidos);

    return allApelidos;
}

}

这是我的活动，展示了2个微调器

package com.rafa.rafa_v2;

import android.content.Context;
import android.database.Cursor;

import java.util.ArrayList;

/**
 * Created by rafaelabueno on 01/03/16.
 */
public class DbBackend extends DbObject{

    public DbBackend(Context context) {
        super(context);
    }

    //Pega o Modelo
    public String[] getAllSpinnerContent(){

        String query = "Select Modelo from Modelos";
        Cursor cursor = this.getDbConnection().rawQuery(query, null);
        ArrayList<String> spinnerContent = new ArrayList<String>();
        if(cursor.moveToFirst()){
            do{
                String word = cursor.getString(cursor.getColumnIndexOrThrow("Modelo"));
                spinnerContent.add(word);
            }while(cursor.moveToNext());
        }
        cursor.close();

        String[] allSpinner = new String[spinnerContent.size()];
        allSpinner = spinnerContent.toArray(allSpinner);

        return allSpinner;
    }

    //Pega o Apelido
    public String[] getAllApelidos () {

        String query = "Select Apelido from Modelos";
        Cursor cursor = this.getDbConnection().rawQuery(query, null);
        ArrayList<String> spinnerApelidos = new ArrayList<String>();

        if(cursor.moveToFirst()){
            do{
                String word = cursor.getString(cursor.getColumnIndexOrThrow("Apelido"));
                spinnerApelidos.add(word);
            } while (cursor.moveToNext());
        }

        cursor.close();

        String[] allApelidos = new String[spinnerApelidos.size()];
        allApelidos = spinnerApelidos.toArray(allApelidos);

        return allApelidos;
    }

 }

如果有人可以帮助我，我真的很高兴！

取决于微调器从sqlite获取数据（Android）

0 个答案: