hfgjgkhlkj

1. PROGRAMA 7
Guerrero Serrano Aylin Miroslawa
Posadas Pérez Yanori Marlene
Olvera Olmos Adrián

7. package com.example.programa7;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle
savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the
action bar if it is present.

8. getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void calcular(View v){
EditText
n=(EditText)findViewById(R.id.editText1);
TextView
r=(TextView)findViewById(R.id.textView3);
double
d=Double.parseDouble(n.getText().toString());
if(d<0){
r.setText("Negativo");
}
r.setText("Positivo");
}
}