黑马程序员：第一个Android程序——打电话

public class YeSayActivity extends Activity {

private EditText et;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

et = (EditText) findViewById(R.id.phoneET);
Button btn = (Button) findViewById(R.id.sendBTN);

btn.setOnClickListener(new SuiOnClickListener());
}

private class SuiOnClickListener implements OnClickListener {
public void onClick(View v) {
String phone = et.getText().toString();

Intent intent = new Intent();
intent.setAction(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:" + phone));
startActivity(intent);
}
}
}