Android Elementary School arithmetic

Android activity:

Package com.example.count_number;


Import Android.os.Bundle;
Import android.app.Activity;
Import Android.view.View;
Import Android.view.View.OnClickListener;
Import Android.widget.Button;
Import Android.widget.EditText;



public class Mainactivity extends Activity {

private int x,y;//used to generate X, Y
private int fhao;//used to generate symbols

Private EditText t1,t2,t3;
Private Button B1;
private int answer,sure;
Private EditText e1,e2;
@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.activity_main);
x = (int) (Math.random () *9) +1; Cannot appear 0
y = (int) (Math.random () *9) +1;
fhao= (int) (Math.random ()) +1;
t1= (EditText) Findviewbyid (R.ID.ET1);
T2= (EditText) Findviewbyid (R.id.et2);
t3= (EditText) Findviewbyid (R.ID.ET3);
b1= (Button) Findviewbyid (R.id.button1);
e1= (EditText) Findviewbyid (R.ID.EDITTEXT1);
E2= (EditText) Findviewbyid (R.ID.EDITTEXT2);
Show
T1.settext (x);
Switch (Fhao)
{
Case 1:
T2.settext ("+");
Sure=x+y;
Break
Case 2:
T2.settext ("-");
Sure=x-y;
Break
Case 3:
T2.settext ("*");
Sure=x*y;
Break
Case 4:
T2.settext ("/");
sure=x/y;
Break
}
T3.settext (y);

Enter and determine the answer
B1.setonclicklistener (New Onclicklistener () {

@Override
public void OnClick (View arg0) {
TODO auto-generated Method Stub
Answer=integer.parseint (E1.gettext (). toString ());
if (answer==sure)
{
E2.settext ("correct");
}
if (answer!=sure)
{
E2.settext ("error");
}
}
});

}

}
Android XML file

<relativelayout xmlns:android= "Http://schemas.android.com/apk/res/android"
Xmlns:tools= "Http://schemas.android.com/tools"
Android:layout_width= "Match_parent"
android:layout_height= "Match_parent"
android:paddingbottom= "@dimen/activity_vertical_margin"
android:paddingleft= "@dimen/activity_horizontal_margin"
android:paddingright= "@dimen/activity_horizontal_margin"
android:paddingtop= "@dimen/activity_vertical_margin"
Tools:context= ". Mainactivity ">

<edittext
Android:id= "@+id/et4"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_alignparentbottom= "true"
Android:layout_centerhorizontal= "true"
android:layout_marginbottom= "23DP"/>

<edittext
Android:id= "@+id/et1"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
android:layout_alignleft= "@+id/edittext1"
Android:layout_alignparenttop= "true"/>

<edittext
Android:id= "@+id/et2"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_alignbaseline= "@+id/textview1"
Android:layout_alignbottom= "@+id/textview1"
android:layout_alignright= "@+id/textview4"/>

<edittext
Android:id= "@+id/et3"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_alignbaseline= "@+id/textview1"
Android:layout_alignbottom= "@+id/textview1"
android:layout_marginleft= "16DP"
android:layout_torightof= "@+id/edittext1"/>

<edittext
Android:id= "@+id/edittext1"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_alignparentleft= "true"
android:layout_below= "@+id/textview1"
android:layout_margintop= "145DP"
android:ems= "Ten"/>

<textview
Android:id= "@+id/textview3"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_alignbottom= "@+id/edittext1"
android:layout_alignleft= "@+id/edittext1"
Android:layout_marginbottom= "75DP"
android:text= "Your input:"/>

<edittext
Android:id= "@+id/edittext2"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_alignparentbottom= "true"
Android:layout_marginbottom= "21DP"
android:layout_toleftof= "@+id/textview2"
Android:ems= "Ten" >

<requestfocus/>
</EditText>

<textview
Android:id= "@+id/textview5"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_above= "@+id/textview4"
android:layout_alignleft= "@+id/edittext2"
Android:layout_marginbottom= "15DP"
Android:text= "is correct:"/>

<button
Android:id= "@+id/button1"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_above= "@+id/textview5"
Android:layout_centerhorizontal= "true"
Android:layout_marginbottom= "32DP"
android:text= "Submit Answer"/>

</RelativeLayout>

This is a simple pupil arithmetic app

Android Elementary School arithmetic