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<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:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">


    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content">
            <TextView
                android:id="@+id/tvResult"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:height="50dp"
                android:text="tvResult"
                />
        </LinearLayout>
        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content">
            <Button
                android:id="@+id/btnBackspace"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="120dp"
                android:layout_marginLeft="10dp"
                android:text="btnbackspace"/>
            <Button
                android:id="@+id/btnCE"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="120dp"
                android:text="btnCE"/>
        </LinearLayout>
        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content">
            <Button
                android:id="@+id/btn7"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:width="60dp"
                android:text="btn7"/>
            <Button
                android:id="@+id/btn8"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="btn8"/>
            <Button
                android:id="@+id/btn9"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="btn9"/>
            <Button
                android:id="@+id/btnDiv"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="Div"/>
        </LinearLayout>
        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content">
            <Button
                android:id="@+id/btn4"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:width="60dp"
                android:text="btn4"/>
            <Button
                android:id="@+id/btn5"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="btn5"/>
            <Button
                android:id="@+id/btn6"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="btn6"/>
            <Button
                android:id="@+id/btnMul"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="Mul"/>
        </LinearLayout>
        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content">
            <Button
                android:id="@+id/btn1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:width="60dp"
                android:text="btn1"/>
            <Button
                android:id="@+id/btn2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="btn2"/>
            <Button
                android:id="@+id/btn3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="btn3"/>
            <Button
                android:id="@+id/btnAdd"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="Add"/>
        </LinearLayout>
        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content">
            <Button
                android:id="@+id/btn0"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:width="60dp"
                android:text="btn0"/>
            <Button
                android:id="@+id/btnC"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="btnC"/>
            <Button
                android:id="@+id/btnEqu"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="="/>
            <Button
                android:id="@+id/btnSub"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:width="60dp"
                android:text="Sub"/>
        </LinearLayout>
    </LinearLayout>

</RelativeLayout>

public class MainActivity extends ActionBarActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        RadioGroup radGrp = (RadioGroup) findViewById(R.id.radGrp);

        int checkedRadioButtonId = radGrp.getCheckedRadioButtonId();

        radGrp.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            Toast toast;
            @Override
            public void onCheckedChanged(RadioGroup arg0, int id) {
                switch (id) {
                    case -1:
                     toast=Toast.makeText(getApplicationContext(), "Choices cleared", Toast.LENGTH_SHORT);
                      //ÏÔʾtoastÐÅÏ¢
                        toast.show();
                        break;
                    case R.id.chRBtn:
                      toast=Toast.makeText(getApplicationContext(), "Choices cleared", Toast.LENGTH_SHORT);
                        toast.show();
                        break;
                    case R.id.fishRBtn:
                        toast=Toast.makeText(getApplicationContext(), "Chose Fish", Toast.LENGTH_SHORT);
                        toast.show();
                        break;
                    case R.id.stkRBtn:
                        toast=Toast.makeText(getApplicationContext(), "Chose Steak", Toast.LENGTH_SHORT);
                        toast.show();
                        break;
                    default:
                        toast=Toast.makeText(getApplicationContext(), "huh", Toast.LENGTH_SHORT);
                        toast.show();
                        break;
                }
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

 Ô´ÂëÏÂÔصØÖ·£ºhttp://download.csdn.net/detail/x605940745/7148153

תÔØÇë×¢Ã÷³ö´¦:http://blog.csdn.net/x605940745

[java] view plaincopyprint?

1. package com.android.xiong.gridlayoutTest;  
2.   
3. import java.math.BigDecimal;  
4. import java.util.regex.Pattern;  
5.   
6. import com.android.xiong.gridlayoutTest.R.id;  
7.   
8. import android.os.Bundle;  
9. import android.app.Activity;  
10. import android.view.Menu;  
11. import android.view.View;  
12. import android.view.View.OnClickListener;  
13. import android.widget.Button;  
14. import android.widget.EditText;  
15. import android.widget.GridLayout;  
16. import android.widget.TextView;  
17.   
18. public class MainActivity extends Activity {  
19.   
20.     private EditText print;  
21.   
22.     private static String fistNumber = "0";// µÚÒ»´ÎÊäÈëµÄÖµ  
23.     private static String secondNumber = "0";// µÚ¶þ´ÎÊäÈëµÄÖµ  
24.     private static String num = "0";// ÏÔʾµÄ½á¹û  
25.     private static int flg = 0;// ½á¹ûÀÛ¼ÓÒ»´Î  
26.     public Counts take = null;  
27.   
28.     private int[] btidTake = { R.id.txtdivide, R.id.txtx, R.id.txtmin,  
29.             R.id.txttakesum };  
30.   
31.     private Button[] buttonTake = new Button[btidTake.length];  
32.   
33.     private int[] btidNum = { R.id.txt0, R.id.txt1, R.id.txt2, R.id.txt3,  
34.             R.id.txt4, R.id.txt5, R.id.txt6, R.id.txt7, R.id.txt8, R.id.txt9,  
35.             R.id.txtspl };  
36.     private Button[] buttons = new Button[btidNum.length];  
37.   
38.     private int[] btcl = { R.id.chars, R.id.charx, R.id.txtb, R.id.txtv };  
39.     private Button[] btcls = new Button[btcl.length];  
40.     private GridLayout gly;  
41.   
42.     @Override  
43.     protected void onCreate(Bundle savedInstanceState) {  
44.         super.onCreate(savedInstanceState);  
45.         setContentView(R.layout.activity_main);  
46.         gly=(GridLayout)findViewById(R.id.gly);  
47.         print = (EditText) findViewById(R.id.print);  
48.         print.setText("0");  
49.         print.setEnabled(false);  
50.         GetNumber get = new GetNumber();  
51.         for (int i = 0; i < btidNum.length; i++) {  
52.             buttons[i] = (Button) findViewById(btidNum[i]);  
53.             buttons[i].setOnClickListener(get);  
54.         }  
55.         Compute cm = new Compute();  
56.         for (int i = 0; i < btidTake.length; i++) {  
57.             buttonTake[i] = (Button) findViewById(btidTake[i]);  
58.             buttonTake[i].setOnClickListener(cm);  
59.         }  
60.   
61.         Button eq = (Button) findViewById(R.id.txteq);  
62.   
63.         eq.setOnClickListener(new OnClickListener() {  
64.             @Override  
65.             public void onClick(View v) {  
66.                 if (flg == 0) {  
67.                     secondNumber = print.getText().toString();  
68.                     if (take == Counts.DIVIDE && secondNumber.equals("0")) {  
69.                         print.setText("0²»ÄÜΪ±»³ýÊý");  
70.                     } else {  
71.                         num = take.Values(fistNumber, secondNumber);  
72.                         fistNumber = num;  
73.                         secondNumber = "0";  
74.                         print.setText(num);  
75.                         flg = 1;  
76.                         gly.setBackgroundResource(R.drawable.jz);  
77.                     }  
78.                 }  
79.             }  
80.         });  
81.         Button cleargo = (Button) findViewById(R.id.cleargo);  
82.         cleargo.setOnClickListener(new OnClickListener() {  
83.             @Override  
84.             public void onClick(View v) {  
85.                 // TODO Auto-generated method stub  
86.                 if (num.length() > 1) {  
87.                     num = num.substring(0, num.length() - 1);  
88.                 } else {  
89.                     num = "0";  
90.                 }  
91.                 print.setText(num);  
92.             }  
93.         });  
94.         Button clear = (Button) findViewById(R.id.clear);  
95.         clear.setOnClickListener(new OnClickListener() {  
96.   
97.             @Override  
98.             public void onClick(View v) {  
99.                 // TODO Auto-generated method stub  
100.                 num = "0";  
101.                 fistNumber = secondNumber = num;  
102.                 print.setText(num);  
103.                 flg = 0;  
104.             }  
105.         });  
106.         for (int i = 0; i < btcl.length; i++) {  
107.             btcls[i] = (Button) findViewById(btcl[i]);  
108.             btcls[i].setOnClickListener(new OnTake());  
109.         }  
110.     }  
111.   
112.     // ¸ø EditText¸³Öµ  
113.     class GetNumber implements OnClickListener {  
114.   
115.         @Override  
116.         public void onClick(View v) {  
117.             // TODO Auto-generated method stub  
118.             if (flg == 1)  
119.                 num = "0";  
120.             if (num.equals("0")) {  
121.                 print.setText("");  
122.                 num = v.getId() == R.id.txtspl ? "0" : "";  
123.             }  
124.             String txt = ((Button) v).getText().toString();  
125.             boolean s = Pattern.matches("-*(\\d+).?(\\d)*", num + txt);  
126.             num = s ? (num + txt) : num;  
127.             gly.setBackgroundResource(R.drawable.js);  
128.             print.setText(num);  
129.         }  
130.     }  
131.   
132.     // ¸ù¾ÝÌõ¼þ¼ÆËã  
133.     class Compute implements OnClickListener {  
134.   
135.         @Override  
136.         public void onClick(View arg0) {  
137.   
138.             fistNumber = print.getText().toString();  
139.             // TODO Auto-generated method stub  
140.             switch (arg0.getId()) {  
141.             case R.id.txttakesum:  
142.                 take = Counts.ADD;  
143.                 break;  
144.             case R.id.txtmin:  
145.                 take = Counts.MINUS;  
146.                 break;  
147.             case R.id.txtx:  
148.                 take = Counts.MULTIPLY;  
149.                 break;  
150.             case R.id.txtdivide:  
151.                 take = Counts.DIVIDE;  
152.                 break;  
153.             }  
154.             num = "0";  
155.             flg = 0;  
156.             gly.setBackgroundResource(R.drawable.js);  
157.         }  
158.   
159.     }  
160.   
161.     class OnTake implements OnClickListener {  
162.   
163.         @Override  
164.         public void onClick(View v) {  
165.             // TODO Auto-generated method stub  
166.             switch (v.getId()) {  
167.             case R.id.chars:  
168.                 num = "-" + num;  
169.                 break;  
170.             case R.id.charx:  
171.                 if(!num.equals("0"))  
172.                 num = BigDecimal.valueOf(1).divide(new BigDecimal(num),12,BigDecimal.ROUND_UP).stripTrailingZeros()  
173.                         .toString();          
174.                 break;  
175.             case R.id.txtb:  
176.                 num = new BigDecimal(num).divide(BigDecimal.valueOf(100),12,BigDecimal.ROUND_UP).stripTrailingZeros()  
177.                         .toString();  
178.                 break;  
179.             case R.id.txtv:  
180.                 Double numss = Math.sqrt(new BigDecimal(num).doubleValue());  
181.                 int stratindex=numss.toString().contains(".")?numss.toString().indexOf("."):0;  
182.                 num = numss.toString().length()>13?numss.toString().substring(0, 12+stratindex):numss.toString();  
183.             }  
184.             print.setText(num);  
185.             flg=0;  
186.             num = "0";  
187.   
188.         }  
189.   
190.     }  
191.   
192.     @Override  
193.     public boolean onCreateOptionsMenu(Menu menu) {  
194.         // Inflate the menu; this adds items to the action bar if it is present.  
195.         getMenuInflater().inflate(R.menu.main, menu);  
196.         return true;  
197.     }  
198.   
199. }  

package com.android.xiong.gridlayoutTest;

import java.math.BigDecimal;
import java.util.regex.Pattern;

import com.android.xiong.gridlayoutTest.R.id;

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.GridLayout;
import android.widget.TextView;

public class MainActivity extends Activity {

	private EditText print;

	private static String fistNumber = "0";// µÚÒ»´ÎÊäÈëµÄÖµ
	private static String secondNumber = "0";// µÚ¶þ´ÎÊäÈëµÄÖµ
	private static String num = "0";// ÏÔʾµÄ½á¹û
	private static int flg = 0;// ½á¹ûÀÛ¼ÓÒ»´Î
	public Counts take = null;

	private int[] btidTake = { R.id.txtdivide, R.id.txtx, R.id.txtmin,
			R.id.txttakesum };

	private Button[] buttonTake = new Button[btidTake.length];

	private int[] btidNum = { R.id.txt0, R.id.txt1, R.id.txt2, R.id.txt3,
			R.id.txt4, R.id.txt5, R.id.txt6, R.id.txt7, R.id.txt8, R.id.txt9,
			R.id.txtspl };
	private Button[] buttons = new Button[btidNum.length];

	private int[] btcl = { R.id.chars, R.id.charx, R.id.txtb, R.id.txtv };
	private Button[] btcls = new Button[btcl.length];
	private GridLayout gly;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		gly=(GridLayout)findViewById(R.id.gly);
		print = (EditText) findViewById(R.id.print);
		print.setText("0");
		print.setEnabled(false);
		GetNumber get = new GetNumber();
		for (int i = 0; i < btidNum.length; i++) {
			buttons[i] = (Button) findViewById(btidNum[i]);
			buttons[i].setOnClickListener(get);
		}
		Compute cm = new Compute();
		for (int i = 0; i < btidTake.length; i++) {
			buttonTake[i] = (Button) findViewById(btidTake[i]);
			buttonTake[i].setOnClickListener(cm);
		}

		Button eq = (Button) findViewById(R.id.txteq);

		eq.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				if (flg == 0) {
					secondNumber = print.getText().toString();
					if (take == Counts.DIVIDE && secondNumber.equals("0")) {
						print.setText("0²»ÄÜΪ±»³ýÊý");
					} else {
						num = take.Values(fistNumber, secondNumber);
						fistNumber = num;
						secondNumber = "0";
						print.setText(num);
						flg = 1;
						gly.setBackgroundResource(R.drawable.jz);
					}
				}
			}
		});
		Button cleargo = (Button) findViewById(R.id.cleargo);
		cleargo.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				if (num.length() > 1) {
					num = num.substring(0, num.length() - 1);
				} else {
					num = "0";
				}
				print.setText(num);
			}
		});
		Button clear = (Button) findViewById(R.id.clear);
		clear.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				num = "0";
				fistNumber = secondNumber = num;
				print.setText(num);
				flg = 0;
			}
		});
		for (int i = 0; i < btcl.length; i++) {
			btcls[i] = (Button) findViewById(btcl[i]);
			btcls[i].setOnClickListener(new OnTake());
		}
	}

	// ¸ø EditText¸³Öµ
	class GetNumber implements OnClickListener {

		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			if (flg == 1)
				num = "0";
			if (num.equals("0")) {
				print.setText("");
				num = v.getId() == R.id.txtspl ? "0" : "";
			}
			String txt = ((Button) v).getText().toString();
			boolean s = Pattern.matches("-*(\\d+).?(\\d)*", num + txt);
			num = s ? (num + txt) : num;
			gly.setBackgroundResource(R.drawable.js);
			print.setText(num);
		}
	}

	// ¸ù¾ÝÌõ¼þ¼ÆËã
	class Compute implements OnClickListener {

		@Override
		public void onClick(View arg0) {

			fistNumber = print.getText().toString();
			// TODO Auto-generated method stub
			switch (arg0.getId()) {
			case R.id.txttakesum:
				take = Counts.ADD;
				break;
			case R.id.txtmin:
				take = Counts.MINUS;
				break;
			case R.id.txtx:
				take = Counts.MULTIPLY;
				break;
			case R.id.txtdivide:
				take = Counts.DIVIDE;
				break;
			}
			num = "0";
			flg = 0;
			gly.setBackgroundResource(R.drawable.js);
		}

	}

	class OnTake implements OnClickListener {

		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			switch (v.getId()) {
			case R.id.chars:
				num = "-" + num;
				break;
			case R.id.charx:
				if(!num.equals("0"))
				num = BigDecimal.valueOf(1).divide(new BigDecimal(num),12,BigDecimal.ROUND_UP).stripTrailingZeros()
						.toString();		
				break;
			case R.id.txtb:
				num = new BigDecimal(num).divide(BigDecimal.valueOf(100),12,BigDecimal.ROUND_UP).stripTrailingZeros()
						.toString();
				break;
			case R.id.txtv:
				Double numss = Math.sqrt(new BigDecimal(num).doubleValue());
				int stratindex=numss.toString().contains(".")?numss.toString().indexOf("."):0;
				num = numss.toString().length()>13?numss.toString().substring(0, 12+stratindex):numss.toString();
			}
			print.setText(num);
			flg=0;
			num = "0";

		}

	}

	@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;
	}

}

[java] view plaincopyprint?

1. <pre code_snippet_id="275884" snippet_file_name="blog_20140404_2_5383103">  

<pre code_snippet_id="275884" snippet_file_name="blog_20140404_2_5383103">

[java] view plaincopyprint?

1. package com.android.xiong.gridlayoutTest;  
2.   
3. import java.math.BigDecimal;  
4.   
5. public enum Counts {  
6.     ADD, MINUS, MULTIPLY, DIVIDE, MARK, ROOT;  
7.     public String Values(String num1, String num2) {  
8.         BigDecimal number1 = new BigDecimal(num1);  
9.         BigDecimal number2 = new BigDecimal(num2);  
10.         BigDecimal number = BigDecimal.valueOf(0);  
11.         switch (this) {  
12.         case ADD:  
13.             number = number1.add(number2);  
14.             break;  
15.         case MINUS:  
16.             number = number1.subtract(number2);  
17.             break;  
18.         case MULTIPLY:  
19.             number = number1.multiply(number2);  
20.             break;  
21.         case DIVIDE:  
22.             number = number1.divide(number2,20,BigDecimal.ROUND_UP);  
23.             break;  
24.   
25.         }  
26.         return number.stripTrailingZeros().toString();  
27.   
28.     }  
29.   
30. }  

package com.android.xiong.gridlayoutTest;

import java.math.BigDecimal;

public enum Counts {
	ADD, MINUS, MULTIPLY, DIVIDE, MARK, ROOT;
	public String Values(String num1, String num2) {
		BigDecimal number1 = new BigDecimal(num1);
		BigDecimal number2 = new BigDecimal(num2);
		BigDecimal number = BigDecimal.valueOf(0);
		switch (this) {
		case ADD:
			number = number1.add(number2);
			break;
		case MINUS:
			number = number1.subtract(number2);
			break;
		case MULTIPLY:
			number = number1.multiply(number2);
			break;
		case DIVIDE:
			number = number1.divide(number2,20,BigDecimal.ROUND_UP);
			break;

		}
		return number.stripTrailingZeros().toString();

	}

}

[html] view plaincopyprint?

1. <GridLayout xmlns:android="http://schemas.android.com/apk/res/android"  
2.     xmlns:tools="http://schemas.android.com/tools"  
3.     android:layout_width="match_parent"  
4.     android:layout_height="wrap_content"  
5.     android:layout_marginTop="40px"  
6.     android:columnCount="5"  
7.     android:rowCount="6"  
8.     tools:context=".MainActivity" >  
9.   
10.     <EditText  
11.         android:id="@+id/print"  
12.         android:layout_width="match_parent"  
13.         android:layout_height="wrap_content"  
14.         android:layout_columnSpan="5"  
15.         android:layout_marginLeft="2px"  
16.         android:layout_marginRight="2px"  
17.         android:layout_row="0"  
18.         android:background="#eee" />  
19.   
20.     <Button  
21.         android:id="@+id/cleargo"  
22.         android:layout_width="wrap_content"  
23.         android:layout_height="wrap_content"  
24.         android:layout_column="0"  
25.         android:layout_row="1"  
26.         android:text="¡¶--" />  
27.   
28.     <Button  
29.         android:id="@+id/clear"  
30.         android:layout_width="wrap_content"  
31.         android:layout_height="wrap_content"  
32.         android:layout_column="3"  
33.         android:layout_columnSpan="2"  
34.         android:layout_row="1"  
35.         android:layout_gravity="fill_horizontal"  
36.         android:text="ÇåÆÁ" />  
37.   
38.     <Button  
39.         android:id="@+id/chars"  
40.         android:layout_width="wrap_content"  
41.         android:layout_height="wrap_content"  
42.         android:layout_column="1"  
43.         android:layout_row="1"  
44.         android:text="-/+" />  
45.   
46.     <Button  
47.         android:id="@+id/charx"  
48.         android:layout_width="wrap_content"  
49.         android:layout_height="wrap_content"  
50.         android:layout_column="2"  
51.         android:layout_row="1"  
52.         android:text="1/x" />  
53.   
54.     <Button  
55.         android:id="@+id/txt7"  
56.         android:layout_width="wrap_content"  
57.         android:layout_height="wrap_content"  
58.         android:layout_column="0"  
59.         android:layout_row="2"  
60.         android:text="7" />  
61.   
62.     <Button  
63.         android:id="@+id/txt8"  
64.         android:layout_width="wrap_content"  
65.         android:layout_height="wrap_content"  
66.         android:layout_column="1"  
67.         android:layout_row="2"  
68.         android:text="8" />  
69.   
70.     <Button  
71.         android:id="@+id/txt9"  
72.         android:layout_width="wrap_content"  
73.         android:layout_height="wrap_content"  
74.         android:layout_column="2"  
75.         android:layout_row="2"  
76.         android:text="9" />  
77.   
78.     <Button  
79.         android:id="@+id/txtdivide"  
80.         android:layout_width="wrap_content"  
81.         android:layout_height="wrap_content"  
82.         android:layout_column="3"  
83.         android:layout_row="2"  
84.         android:text="¡Â" />  
85.   
86.     <Button  
87.         android:id="@+id/txtb"  
88.         android:layout_width="wrap_content"  
89.         android:layout_height="wrap_content"  
90.         android:layout_column="4"  
91.         android:layout_row="2"  
92.         android:text="%" />  
93.   
94.     <Button  
95.         android:id="@+id/txt4"  
96.         android:layout_width="wrap_content"  
97.         android:layout_height="wrap_content"  
98.         android:layout_column="0"  
99.         android:layout_row="3"  
100.         android:text="4" />  
101.   
102.     <Button  
103.         android:id="@+id/txt5"  
104.         android:layout_width="wrap_content"  
105.         android:layout_height="wrap_content"  
106.         android:layout_column="1"  
107.         android:layout_row="3"  
108.         android:text="5" />  
109.   
110.     <Button  
111.         android:id="@+id/txt6"  
112.         android:layout_width="wrap_content"  
113.         android:layout_height="wrap_content"  
114.         android:layout_column="2"  
115.         android:layout_row="3"  
116.         android:text="6" />  
117.   
118.     <Button  
119.         android:id="@+id/txtx"  
120.         android:layout_width="wrap_content"  
121.         android:layout_height="wrap_content"  
122.         android:layout_column="3"  
123.         android:layout_row="3"  
124.         android:text="X" />  
125.   
126.     <Button  
127.         android:id="@+id/txtv"  
128.         android:layout_width="wrap_content"  
129.         android:layout_height="wrap_content"  
130.         android:layout_column="4"  
131.         android:layout_row="3"  
132.         android:text="¡Ì" />  
133.   
134.     <Button  
135.         android:id="@+id/txt1"  
136.         android:layout_width="wrap_content"  
137.         android:layout_height="wrap_content"  
138.         android:layout_column="0"  
139.         android:layout_row="4"  
140.         android:text="1" />  
141.   
142.     <Button  
143.         android:id="@+id/txt2"  
144.         android:layout_width="wrap_content"  
145.         android:layout_height="wrap_content"  
146.         android:layout_column="1"  
147.         android:layout_row="4"  
148.         android:text="2" />  
149.   
150.     <Button  
151.         android:id="@+id/txt3"  
152.         android:layout_width="wrap_content"  
153.         android:layout_height="wrap_content"  
154.         android:layout_column="2"  
155.         android:layout_row="4"  
156.         android:text="3" />  
157.   
158.     <Button  
159.         android:id="@+id/txtmin"  
160.         android:layout_width="wrap_content"  
161.         android:layout_height="wrap_content"  
162.         android:layout_column="3"  
163.         android:layout_row="4"  
164.         android:text="-" />  
165.   
166.     <Button  
167.         android:id="@+id/txteq"  
168.         android:layout_width="wrap_content"  
169.         android:layout_height="wrap_content"  
170.         android:layout_column="4"  
171.         android:layout_gravity="fill_vertical"  
172.         android:layout_row="4"  
173.         android:layout_rowSpan="2"  
174.         android:text="=" />  
175.   
176.     <Button  
177.         android:id="@+id/txt0"  
178.         android:layout_width="wrap_content"  
179.         android:layout_height="wrap_content"  
180.         android:layout_column="0"  
181.         android:layout_columnSpan="2"  
182.         android:layout_gravity="fill_horizontal"  
183.         android:layout_row="5"  
184.         android:text="0" />  
185.   
186.     <Button  
187.         android:id="@+id/txtspl"  
188.         android:layout_width="wrap_content"  
189.         android:layout_height="wrap_content"  
190.         android:layout_column="2"  
191.         android:layout_row="5"  
192.         android:text="." />  
193.   
194.     <Button  
195.         android:id="@+id/txttakesum"  
196.         android:layout_width="wrap_content"  
197.         android:layout_height="wrap_content"  
198.         android:layout_column="3"  
199.         android:layout_row="5"  
200.         android:text="+" />  
201.   
202. </GridLayout>  
203.