安卓仿苹果计算器(内附完整源码)

//效果图：

package com.jc.cal;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener; import android.widget.Button;

import android.widget.EditText;

public class MainActivity extends Activity { // 定义九个数字

private Button one;

private Button two;

private Button three;

private Button four;

private Button five;

private Button six;

private Button seven;

private Button eight;

private Button nine;

private Button zero;

private Button dot;

private Button add;

private Button sub;

private Button mul;

private Button div;

private Button clear;

private Button equal;

private EditText led;

String num1 = "";

String num2 = "";

double num3 = 0;

String result = "";

String sign = "+";

int mark = 0;

boolean flag = true;

boolean dotmark = true;

@Override

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

setContentView(https://www.360docs.net/doc/5e10379638.html,yout.activity_main);

zero = (Button) findViewById(R.id.zero);

one = (Button) findViewById(R.id.one);

two = (Button) findViewById(R.id.two);

three = (Button) findViewById(R.id.three);

four = (Button) findViewById(R.id.four);

five = (Button) findViewById(R.id.five);

six = (Button) findViewById(R.id.six);

seven = (Button) findViewById(R.id.seven);

eight = (Button) findViewById(R.id.eight);

nine = (Button) findViewById(R.id.nine);

add = (Button) findViewById(R.id.add);

sub = (Button) findViewById(R.id.sub);

mul = (Button) findViewById(R.id.mul);

div = (Button) findViewById(R.id.div);

clear = (Button) findViewById(R.id.clear);

led = (EditText) findViewById(R.id.led);

equal = (Button) findViewById(R.id.equal);

dot = (Button) findViewById(R.id.dot);

zero.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "0";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "0";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "0";

led.setText(num1 + sign + num2);

}

}

});

one.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "1";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "1";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "1";

led.setText(num1 + sign + num2);

}

}

});

two.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "2";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "2";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "2";

led.setText(num1 + sign + num2);

}

}

});

three.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "3";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "3";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "3";

led.setText(num1 + sign + num2);

}

}

});

four.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "4";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "4";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "4";

led.setText(num1 + sign + num2);

}

}

});

five.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "5";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "5";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "5";

led.setText(num1 + sign + num2);

}

}

});

six.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "6";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "6";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "6";

led.setText(num1 + sign + num2);

}

}

});

seven.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "7";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "7";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "7";

led.setText(num1 + sign + num2);

}

}

});

eight.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "8";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "8";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "8";

led.setText(num1 + sign + num2);

}

}

});

nine.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (mark == 0) {

num1 = num1 + "9";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + "9";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + "9";

led.setText(num1 + sign + num2);

}

}

});

add.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (flag) {

sign = "+";

mark++;

flag = false;

dotmark = true;

}

}

});

sub.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (flag) {

sign = "-";

mark++;

flag = false;

dotmark = true;

}

}

});

mul.setOnClickListener(new OnClickListener() { public void onClick(View v) {

if (flag) {

sign = "*";

mark++;

flag = false;

dotmark = true;

}

}

});

div.setOnClickListener(new OnClickListener() {

public void onClick(View v) {

if (flag) {

sign = "÷";

mark++;

flag = false;

dotmark = true;

}

}

});

dot.setOnClickListener(new OnClickListener() {

public void onClick(View v) {

if (dotmark) {

if (mark == 0) {

num1 = num1 + ".";

led.setText(num1);

} else if (mark == 1) {

num2 = num2 + ".";

led.setText(num1 + sign + num2);

} else {

num1 = String.valueOf(num3);

num2 = num2 + ".";

led.setText(num1 + sign + num2);

}

dotmark = false;

}

}

});

equal.setOnClickListener(new OnClickListener() { // 等于时发生的运算

public void onClick(View v) {

flag = true;

dotmark = true;

if (sign.equals("+")) {

double x = Double.parseDouble(num1);

double y = Double.parseDouble(num2);

num3 = x + y;

result = String.valueOf(num3);

led.setText(num1+ sign + num2 + "=" + result);

num2 = "";

} else if (sign.equals("-")) {

double x = Double.parseDouble(num1);

double y = Double.parseDouble(num2);

num3 = x - y;

result = String.valueOf(num3);

led.setText(num1+ sign + num2 + "=" + result);

num2 = "";

} else if (sign.equals("*")) {

double x = Double.parseDouble(num1);

double y = Double.parseDouble(num2);

num3 = x * y;

result = String.valueOf(num3);

led.setText(num1+ sign + num2 + "=" + result);

num2 = "";

} else if (sign.equals("÷")) {

double x = Double.parseDouble(num1);

double y = Double.parseDouble(num2);

num3 = x / y;

result = String.valueOf(num3);

led.setText(num1+ sign + num2 + "=" + result);

num2 = "";

} else if (sign.equals("^")) {

double x = Double.parseDouble(num1);

double y = Double.parseDouble(num2);

num3 = Math.pow(x, y);

result = String.valueOf(num3);

led.setText(num1+ sign + num2 + "=" + result);

num2 = "";

}

}

});

clear.setOnClickListener(new OnClickListener() { public void onClick(View v) {

num1 = "";

num2 = "";

num3 = 0;

mark = 0;

sign = "";

led.setText("0");

flag = true;

dotmark = true;

}

});

}

}

xmlns:android="https://www.360docs.net/doc/5e10379638.html,/apk/res/android"

xmlns:tools="https://www.360docs.net/doc/5e10379638.html,/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="#000"

android:orientation="vertical"

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">

android:id="@+id/led"

android:layout_width="288dp"

android:layout_height="79dp"

android:background="#000"

android:gravity="top|right"

android:text="0"

="#FFF"

android:textSize="20pt"

android:textStyle="bold"/>

android:layout_width="288dp"

android:layout_height="70dp"

android:orientation="horizontal">

android:id="@+id/clear"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#C3C4C5"

android:text="AC"/>

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#C3C4C5"

android:text="+/-"/>

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#C3C4C5"

android:text="%"/>

android:id="@+id/div"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#f99011"

android:text="÷"/>

android:layout_width="288dp"

android:layout_height="70dp"

android:layout_marginTop="0.5dp"

android:orientation="horizontal">

android:id="@+id/seven"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="7"/>

android:id="@+id/eight"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="8"/>

android:id="@+id/nine"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="9"/>

android:id="@+id/mul"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#f99011"

android:text="×"/>

android:layout_width="288dp"

android:layout_height="70dp"

android:layout_marginTop="0.5dp"

android:orientation="horizontal">

android:id="@+id/four"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="4"/>

android:id="@+id/five"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="5"/>

android:id="@+id/six"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="6"/>

android:id="@+id/sub"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#f99011"

android:text="-"/>

android:layout_width="288dp"

android:layout_height="70dp"

android:layout_marginTop="0.5dp"

android:orientation="horizontal">

android:id="@+id/one"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="1"/>

android:id="@+id/two"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="2"/>

android:id="@+id/three"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="3"/>

android:id="@+id/add"

android:layout_width="70dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#f99011"

android:text="+"/>

android:layout_width="288dp"

android:layout_height="70dp"

android:layout_marginTop="0.5dp"

android:orientation="horizontal">

android:id="@+id/zero"

android:layout_width="141.5dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="0"/>

android:id="@+id/dot"

android:layout_width="69.5dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#D1D2D5"

android:text="."/>

android:id="@+id/equal"

android:layout_width="68.5dp"

android:layout_height="70dp"

android:layout_margin="0.5dp"

android:layout_weight="1"

android:background="#f99011"

android:onClick="enterInfo"

android:text="="/>