Curso-Android-Desarrollo-de-Aplicaciones-Móviles

CURSO ANDROID
38
startActivity(backToMainActivity);
Al finalizar, el código de esta clase es el siguiente:
package com.android.mdw.demo;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class ShowElement extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.showelement);
Intent it = getIntent();
int position = it.getIntExtra(Main.POSITION_KEY, -1);
if (position != -1) {
MyApp appState = ((MyApp)getApplication());
Element e = appState.getData().get(position);
TextView txtTitle = (TextView)findViewById(R.id.txtTitle);
txtTitle.setText(e.getTitle());
TextView txtAuthor = (TextView)findViewById(R.id.txtAuthor);
txtAuthor.setText(“por “ + e.getAuthor());
TextView txtDesc = (TextView)findViewById(R.id.txtDesc);
txtDesc.setText(e.getDescription());
} else {
Intent backToMainActivity = new Intent(this, Main.class);
backToMainActivity.putExtra(Main.POSITION_KEY, -1);
startActivity(backToMainActivity);
}
}
}
Esas son las clases adicionales luego el trabajo es sobre la Activity principal: la clase Main.java