package com.example.qqqs;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RadioGroup r1=(RadioGroup)findViewById(R.id.rdg);
r1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
// TODO Auto-generated method stub
EditText e1=(EditText)findViewById(R.id.edi1);
EditText e2=(EditText)findViewById(R.id.edi2);
TextView textView=(TextView)findViewById(R.id.tv3);
String txt1=e1.getText().toString();
String txt2=e2.getText().toString();
double num1=Integer.parseInt(txt1);
double num2=Integer.parseInt(txt2);
double result=0;
if (checkedId == R.id.radio1) {
result=num1+num2;
textView.setText("结果"+result);
} else if (checkedId == R.id.radio2) {
result=num1-num2;
textView.setText("结果"+result);
} else if (checkedId == R.id.radio3) {
result=num1*num2;
textView.setText("结果"+result);
} else if (checkedId == R.id.radio4) {
result=num1/num2;
textView.setText("结果"+result);
}
}
});
}
public void CCC(View view) {
Button b1=(Button)findViewById(R.id.button1);
EditText et1= (EditText)findViewById(R.id.edi1);
EditText et2=(EditText)findViewById(R.id.edi2);
TextView textView=(TextView)findViewById(R.id.tv3);
String text=new String();
text=text.replace("", "");
textView.setText(text);
String et = new String();
et=et.replace("", "");
et1.setText(et);
et2.setText(et);
}
}
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
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="com.example.qqqs.MainActivity" >
<TextView
android:id="@+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="输入第一个数"
android:textSize="20sp" />
<TextView
android:id="@+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@id/tv1"
android:layout_marginTop="26dp"
android:text="输入第二个数"
android:textSize="20sp" />
<RadioGroup
android:id="@+id/rdg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginTop="100dp"
android:orientation="horizontal">
<RadioButton
android:id="@+id/radio1"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_alignBaseline="@id/radio1"
android:layout_alignBottom="@id/radio1"
android:layout_marginLeft="20dp"
android:text="+" />
<RadioButton
android:id="@+id/radio2"
android:layout_width="77dp"
android:layout_height="78dp"
android:layout_marginTop="51dp"
android:layout_weight="0.37"
android:text="-" />
<RadioButton
android:id="@+id/radio3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@id/radio2"
android:layout_alignBottom="@id/radio2"
android:layout_toRightOf="@id/radio2"
android:text="*" />
<RadioButton
android:id="@+id/radio4"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_alignBaseline="@id/radio1"
android:layout_alignBottom="@id/radio1"
android:layout_marginRight="43dp"
android:text="/" />
</RadioGroup>
<EditText
android:id="@+id/edi1"
android:layout_width="20dp"
android:layout_height="30dp"
android:layout_alignParentRight="true"
android:layout_alignTop="@id/tv1"
android:layout_marginLeft="35dp"
android:layout_toRightOf="@id/tv1"
android:background="@drawable/eid_dg"
android:ems="10" >
<requestFocus />
</EditText>
<EditText
android:id="@+id/edi2"
android:layout_width="20dp"
android:layout_height="30dp"
android:layout_alignBaseline="@id/tv2"
android:layout_alignBottom="@id/tv2"
android:layout_alignLeft="@id/edi1"
android:layout_alignRight="@id/edi1"
android:background="@drawable/eid_dg"
android:ems="10" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/tv3"
android:layout_alignBottom="@+id/tv3"
android:layout_centerHorizontal="true"
android:onClick="CCC"
android:text="Button" />
<TextView
android:id="@+id/tv3"
android:layout_width="50dp"
android:layout_height="60dp"
android:layout_centerVertical="true"
android:layout_toLeftOf="@+id/button1" />
</RelativeLayout>