gistfile1.java

package br.com.savemoney.mastercontas;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import br.com.savemoney.database.DatabaseHelper;
import br.com.savemoney.database.DatabaseHelper.Devedores;

public class DevedorActivity extends Activity {
	
	private DatabaseHelper helper;
	private EditText edtNomeDevedor, edtTelefoneDevedor, edtEmailDevedor;
	private String id;
	private long resultado;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.devedor);
		
		edtNomeDevedor = (EditText) findViewById(R.id.edtNomeDevedor);
		edtTelefoneDevedor = (EditText) findViewById(R.id.edtTelefoneDevedor);
		edtEmailDevedor = (EditText) findViewById(R.id.edtEmailDevedor);
		
		helper = new DatabaseHelper(this);
		
		//Recuperando informações transmitidas de um activity a outra através do método putExtra da Intent.
		id = getIntent().getStringExtra("id");
		//Testa se o id foi mesmo recebido, e não está recebido. :-(
		Toast.makeText(this, "Id recebido: " + id, Toast.LENGTH_LONG).show();
		
		if(id != null) {
			preparaEdicao();
		}
	}
	
	public void cadastrarDevedor(View view) {
		SQLiteDatabase db = helper.getWritableDatabase();
		
		ContentValues values = new ContentValues();
		values.put("nome", edtNomeDevedor.getText().toString());
		values.put("telefone", edtTelefoneDevedor.getText().toString());
		values.put("email", edtEmailDevedor.getText().toString());
		
		if(id == null) {
			resultado = db.insert("devedor", null, values);
		} else {
			resultado = db.update("devedor", values, "_id = ?", new String[] {id});
		}
		
		
		if(resultado != -1) {
			Toast.makeText(getBaseContext(), R.string.cadastro_devedor_sucesso, Toast.LENGTH_LONG).show();
			startActivity(new Intent(this, ListaDevedoresActivity.class));
		} else {
			Toast.makeText(getBaseContext(), R.string.cadastro_devedor_erro, Toast.LENGTH_LONG).show();
		}
	}
	
	private void preparaEdicao() {
		SQLiteDatabase db = helper.getReadableDatabase();
		
		Cursor cursor = db.rawQuery("SELECT * FROM devedor WHERE id = ?;", new String[] {id});
		
		cursor.moveToFirst();
		
		edtNomeDevedor.setText(cursor.getString(1));
		edtTelefoneDevedor.setText(cursor.getString(2));
		edtEmailDevedor.setText(cursor.getString(3));
		
		cursor.close();
	}
	
	@Override
	protected void onDestroy() {
		helper.close();
		super.onDestroy();
	}
}