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AULA 04 - Agenda has stopped

Estou com erro ao executar

E/SQLiteLog: (1) no such table: Alunos
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: com.example.aline.agenda01, PID: 2966
                  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.aline.agenda01/com.example.aline.agenda01.ListadeAlunosActivity}: android.database.sqlite.SQLiteException: no such table: Alunos (code 1): , while compiling: SELECT *FROM Alunos;
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
                      at android.app.ActivityThread.-wrap12(ActivityThread.java)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:154)
                      at android.app.ActivityThread.main(ActivityThread.java:6077)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
                   Caused by: android.database.sqlite.SQLiteException: no such table: Alunos (code 1): , while compiling: SELECT *FROM Alunos;
                      at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
                      at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
                      at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
                      at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
                      at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
                      at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
                      at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
                      at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1318)
                      at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1257)
                      at com.example.aline.agenda01.AlunoDAO.AlunoDAO.buscaAlunos(AlunoDAO.java:60)
                      at com.example.aline.agenda01.ListadeAlunosActivity.onCreate(ListadeAlunosActivity.java:23)
                      at android.app.Activity.performCreate(Activity.java:6664)
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707) 
                      at android.app.ActivityThread.-wrap12(ActivityThread.java) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:154) 
                      at android.app.ActivityThread.main(ActivityThread.java:6077) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
4 respostas
solução!

Talvez o problema esteja na classe AlunoDAO

Veja se está desta forma:

package br.com.alura.agenda.dao;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.support.annotation.NonNull;

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

import br.com.alura.agenda.Aluno;



public class AlunoDAO extends SQLiteOpenHelper {
    public AlunoDAO(Context context) {
        super(context, "Agenda", null, 2);
    }

    @Override
    public void onCreate (SQLiteDatabase db) {
        String sql = "CREATE TABLE Alunos (id INTEGER PRIMARY KEY, nome TEXT NOT NULL, endereço TEXT, telefone TEXT, site TEXT, nota REAL, caminhoFoto TEXT);";
        db.execSQL(sql);
    }

public List<Aluno> buscaAlunos()  {
        String sql = "SELECT * FROM Alunos;";
        SQLiteDatabase db = getReadableDatabase();
        Cursor c = db.rawQuery(sql, null);

        List<Aluno> alunos = new ArrayList<Aluno>();
        while (c.moveToNext()) {
            Aluno aluno = new Aluno();
            aluno.setId(c.getLong(c.getColumnIndex("id")));
            aluno.setNome(c.getString(c.getColumnIndex("nome")));
            aluno.setEndereco(c.getString(c.getColumnIndex("endereço")));
            aluno.setTelefone(c.getString(c.getColumnIndex("telefone")));
            aluno.setSite(c.getString(c.getColumnIndex("site")));
            aluno.setNota(c.getDouble(c.getColumnIndex("nota")));
            aluno.setCaminhoFoto(c.getString(c.getColumnIndex("caminhoFoto")));
            alunos.add(aluno);

        }
        c.close();

        return alunos;

    }

//Demais métodos


}

Obrigado! Na função oncreate tava faltando a execSql

Antonio, o problema é no banco. Se tu tiver alterado alguma coisa no banco tem que mudar a versão dele. Testa isso

Não tinha visto seu comentario, Antonio. pois fecha o post marcando a solução (Y)