作业四

概述   packagecom.example.aaa;importandroid.support.v7.app.ActionBarActivity;importandroid.os.Bundle;importandroid.view.Menu;importandroid.view.View;importandroid.widget.EditText;importandroid.widget.RadioGroup;importandroid.widget.RadioGroup.OnCh

 

 

 

package com.example.aaa;

import androID.support.v7.app.ActionBaractivity;
import androID.os.Bundle;
import androID.vIEw.Menu;
import androID.vIEw.VIEw;
import androID.Widget.EditText;
import androID.Widget.RadioGroup;
import androID.Widget.RadioGroup.OnCheckedchangelistener;
import androID.Widget.TextVIEw;

public class MainActivity extends ActionBaractivity implements VIEw.OnClickListener{
@OverrIDe
protected voID onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentVIEw(R.layout.activity_main);

RadioGroup rg = (RadioGroup) findVIEwByID(R.ID.radioGroup1);
rg.setonCheckedchangelistener((OnCheckedchangelistener) this);

}

@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;
}

public voID onCheckedChanged(RadioGroup group, int checkedID) {
EditText et1 = (EditText) findVIEwByID(R.ID.num1);
EditText et2 = (EditText) findVIEwByID(R.ID.num2);
String s1 = et1.getText().toString();
String s2 = et2.getText().toString();
double a1 = Integer.valueOf(s1).intValue();
double a2 = Integer.valueOf(s2).intValue();
// Todo 自动生成的方法存根
TextVIEw tv = (TextVIEw) findVIEwByID(R.ID.Text);
switch (checkedID) {
case R.ID.add:
a1 = a1 + a2;
s1 = String.valueOf(a1);
tv.setText(s1);
break;
case R.ID.min:
a1 = a1 - a2;
s1 = String.valueOf(a1);
tv.setText(s1);
break;
case R.ID.mul:
a1 = a1 * a2;
s1 = String.valueOf(a1);
tv.setText(s1);
break;
case R.ID.dev:
a1 = a1 / a2;
s1 = String.valueOf(a1);
tv.setText(s1);
break;

}

}

public voID click(VIEw vIEw) {
TextVIEw tv = (TextVIEw) findVIEwByID(R.ID.Text);
TextVIEw tv2 = (TextVIEw) findVIEwByID(R.ID.num2);
;
TextVIEw tv3 = (TextVIEw) findVIEwByID(R.ID.num1);
;
switch (vIEw.getID()) {

case R.ID.button1:
tv.setText("");
tv2.setText("");
tv3.setText("");
}
}

@OverrIDe
public voID onClick(VIEw v) {
// Todo auto-generated method stub

}
}

 

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