L
Leon F.
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java.lang.ClassCastException: android.widget.RadioButton cannot be cast to android.view.ViewGroup
Diesen Error erhalte ich bei meiner xml File!
meine Activity sieht so aus:
Diesen Error erhalte ich bei meiner xml File!
meine Activity sieht so aus:
Code:
package org.app.box;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.TextView;
public class dollareurocon extends Activity implements OnClickListener {
TextView dollars;
TextView euros;
RadioButton dollartoeuro;
RadioButton eurotodollar;
Button convert;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.dollartoeuroconv);
dollars = (TextView)this.findViewById(R.id.dollar);
euros = (TextView)this.findViewById(R.id.euro);
dollartoeuro = (RadioButton)this.findViewById(R.id.dollartoeuro);
dollartoeuro.setChecked(true);
eurotodollar = (RadioButton)this.findViewById(R.id.eurotodollar);
eurotodollar.setChecked(true);
convert = (Button)this.findViewById(R.id.convert);
convert.setOnClickListener(this);
}
public void onClick(View v) {
if (dollartoeuro.isChecked()) {
convertDollarsToEuros();
}
if (eurotodollar.isChecked()) {
convertEurosToDollars();
}
}
protected void convertDollarsToEuros() {
double val = Double.parseDouble(dollars.getText().toString());
// in a real app, we'd get this off the 'net
euros.setText(Double.toString(val*0.67));
}
protected void convertEurosToDollars() {
double val = Double.parseDouble(euros.getText().toString());
// in a real app, we'd get this off the 'net
dollars.setText(Double.toString(val/0.67));
}
}