Question

I need get te value from checkbox and show in other activity and display in textview.

This is the code FormSupervisar.

public class FormSupervisar extends Activity {  
    CheckBox Si;      
    @Override       
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);            
        setContentView(R.layout.formsupervisar);           
        Si=(CheckBox)findViewById(R.id.chBoxSi);  
    }
    public void btnEnviar(View view){
        if (Si.isChecked()){        
            Intent i = new Intent(this,FormBotonSi.class);
            i.putExtra("Si",Si.getText().toString().trim());     
            startActivity(i);  
        }      
    }

The activity when i call the string and show the String in a TextView

public class FormBotonSi extends Activity {   
    private String ,Si ;     
    private TextView tvTipoInspeccion;                     
    @Override      
    public void onCreate(Bundle savedInstanceState)      
    {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.formbotonsi);                                           
         Bundle bn1 = getIntent().getExtras();  
         Si = bn1.getString(Si);          
         tvTipoInspeccion.setText(Si.toString());
    }
}

Answer 1

Try it this way…..

public class FormBotonSi extends Activity {

......
......

String Si = getIntent().getExtras().getString("Si");  // its "Si" instead of Si


}

One more thing… While you code in Java you must follow the Camel case. Field and Methods always starts with small letter whereas Class, Interface, Enums, Constructors starts with Capital letters.