More Related Content
More from Melina Krisnawati
More from Melina Krisnawati (20)
Pemrograman Mobile - Try Catch
- 1. package melina.latihan2;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements
OnClickListener {
Button btntambah;
Button btnkurang;
Button btnkali;
Button btnbagi;
EditText txtbil1;
EditText txtbil2;
EditText txthasil;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btntambah = (Button)findViewById(R.id.btntambah);
- 2. btntambah.setOnClickListener(this);
btnkurang = (Button)findViewById(R.id.btnkurang);
btnkurang.setOnClickListener(this);
btnkali = (Button)findViewById(R.id.btnkali);
btnkali.setOnClickListener(this);
btnbagi = (Button)findViewById(R.id.btnbagi);
btnbagi.setOnClickListener(this);
btnbagi.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
kalkulasi();
}
});
txtbil1 = (EditText) findViewById(R.id.txtbil1);
txtbil2 = (EditText) findViewById(R.id.txtbil2);
txthasil = (EditText) findViewById(R.id.txthasil);
}
public void kalkulasi(){
double txtbil1 = 10;
double txtbil2 = 0;
try {
- 3. TextView ettxtbil2 = null;
txtbil2 =
Double.parseDouble(ettxtbil2.getText().toString());
} catch (Exception e) {
// TODO: handle exception
Toast.makeText(this, "Oops! an error occurred,please
check the division number!", Toast.LENGTH_LONG).show();
txthasil.setText("Hasil pembagian Error ! ");
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it
is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
double vbil1,vbil2,vhasil;
vbil1 = Double.valueOf(txtbil1.getText().toString());
vbil2 = Double.valueOf(txtbil2.getText().toString());
aritmatika obja = new aritmatika(vbil1, vbil2);