设计一个安卓计算器，实现基本加减乘除，开方，平方，倒数运算，阶乘运算，求任意底的对数运算，任意数的N次方运算，正弦，余弦，正切，余切运算等功能

设计一个安卓计算器需要考虑到UI设计和后台计算逻辑设计两部分。下面是一个简单的设计：

### UI设计

- 使用grid布局，将按钮排列成一个二维数组，方便管理
- 使用TextView作为显示面板，显示用户输入的数字和计算结果
- 使用button作为用户输入的按钮，包括数字、运算符和其他功能键，如清空键、等于键等
- 对于一些需要输入多个数字的运算，如任意数的N次方，可以使用弹出框来输入数字

### 后台计算逻辑设计

- 使用栈来实现基本四则运算，运算符栈和数字栈分别存储运算符和数字
- 实现开方、平方、倒数、阶乘等数学函数，使用Java自带的Math库
- 实现任意底的对数运算，使用换底公式 loga(b) = logx(b) / logx(a)，其中x为任意底
- 实现任意数的N次方运算，使用Math.pow()函数
- 实现正弦、余弦、正切、余切运算，使用Java自带的Math库

综上所述，安卓计算器的设计需要涉及到UI设计和后台计算逻辑设计两个部分，UI设计需要考虑使用grid布局、TextView和button实现，后台计算逻辑设计需要实现基本四则运算、数学函数和三角函数等功能。

相关问题

设计一个安卓计算器，实现基本加减乘除，开方，平方，倒数运算，阶乘运算，求任意底的对数运算，任意数的N次方运算，正弦，余弦，正切，余切运算实现代码

好的，下面是一个简单的安卓计算器的实现代码，包括基本的加减乘除、开方、平方、倒数、阶乘、对数、幂、正弦、余弦、正切和余切等运算：

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    
    private TextView display;
    private Button btn0, btn1, btn2, btn3, btn4, btn5, btn6, btn7, btn8, btn9;
    private Button btnAdd, btnSub, btnMul, btnDiv, btnEqu, btnDot, btnClr;
    private Button btnSqrt, btnSqr, btnRec, btnFac, btnLog, btnPow, btnSin, btnCos, btnTan, btnCot;
    private double num1, num2, result;
    private String operator;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        display = findViewById(R.id.display);
        btn0 = findViewById(R.id.btn0);
        btn1 = findViewById(R.id.btn1);
        btn2 = findViewById(R.id.btn2);
        btn3 = findViewById(R.id.btn3);
        btn4 = findViewById(R.id.btn4);
        btn5 = findViewById(R.id.btn5);
        btn6 = findViewById(R.id.btn6);
        btn7 = findViewById(R.id.btn7);
        btn8 = findViewById(R.id.btn8);
        btn9 = findViewById(R.id.btn9);
        btnAdd = findViewById(R.id.btnAdd);
        btnSub = findViewById(R.id.btnSub);
        btnMul = findViewById(R.id.btnMul);
        btnDiv = findViewById(R.id.btnDiv);
        btnEqu = findViewById(R.id.btnEqu);
        btnDot = findViewById(R.id.btnDot);
        btnClr = findViewById(R.id.btnClr);
        btnSqrt = findViewById(R.id.btnSqrt);
        btnSqr = findViewById(R.id.btnSqr);
        btnRec = findViewById(R.id.btnRec);
        btnFac = findViewById(R.id.btnFac);
        btnLog = findViewById(R.id.btnLog);
        btnPow = findViewById(R.id.btnPow);
        btnSin = findViewById(R.id.btnSin);
        btnCos = findViewById(R.id.btnCos);
        btnTan = findViewById(R.id.btnTan);
        btnCot = findViewById(R.id.btnCot);
        
        btn0.setOnClickListener(this);
        btn1.setOnClickListener(this);
        btn2.setOnClickListener(this);
        btn3.setOnClickListener(this);
        btn4.setOnClickListener(this);
        btn5.setOnClickListener(this);
        btn6.setOnClickListener(this);
        btn7.setOnClickListener(this);
        btn8.setOnClickListener(this);
        btn9.setOnClickListener(this);
        btnAdd.setOnClickListener(this);
        btnSub.setOnClickListener(this);
        btnMul.setOnClickListener(this);
        btnDiv.setOnClickListener(this);
        btnEqu.setOnClickListener(this);
        btnDot.setOnClickListener(this);
        btnClr.setOnClickListener(this);
        btnSqrt.setOnClickListener(this);
        btnSqr.setOnClickListener(this);
        btnRec.setOnClickListener(this);
        btnFac.setOnClickListener(this);
        btnLog.setOnClickListener(this);
        btnPow.setOnClickListener(this);
        btnSin.setOnClickListener(this);
        btnCos.setOnClickListener(this);
        btnTan.setOnClickListener(this);
        btnCot.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        String str = display.getText().toString();
        switch (v.getId()) {
            case R.id.btn0:
                display.setText(str + "0");
                break;
            case R.id.btn1:
                display.setText(str + "1");
                break;
            case R.id.btn2:
                display.setText(str + "2");
                break;
            case R.id.btn3:
                display.setText(str + "3");
                break;
            case R.id.btn4:
                display.setText(str + "4");
                break;
            case R.id.btn5:
                display.setText(str + "5");
                break;
            case R.id.btn6:
                display.setText(str + "6");
                break;
            case R.id.btn7:
                display.setText(str + "7");
                break;
            case R.id.btn8:
                display.setText(str + "8");
                break;
            case R.id.btn9:
                display.setText(str + "9");
                break;
            case R.id.btnAdd:
                num1 = Double.parseDouble(str);
                operator = "+";
                display.setText("");
                break;
            case R.id.btnSub:
                num1 = Double.parseDouble(str);
                operator = "-";
                display.setText("");
                break;
            case R.id.btnMul:
                num1 = Double.parseDouble(str);
                operator = "*";
                display.setText("");
                break;
            case R.id.btnDiv:
                num1 = Double.parseDouble(str);
                operator = "/";
                display.setText("");
                break;
            case R.id.btnEqu:
                num2 = Double.parseDouble(str);
                switch (operator) {
                    case "+":
                        result = num1 + num2;
                        break;
                    case "-":
                        result = num1 - num2;
                        break;
                    case "*":
                        result = num1 * num2;
                        break;
                    case "/":
                        result = num1 / num2;
                        break;
                }
                display.setText(String.valueOf(result));
                break;
            case R.id.btnDot:
                if (!str.contains(".")) {
                    display.setText(str + ".");
                }
                break;
            case R.id.btnClr:
                display.setText("");
                break;
            case R.id.btnSqrt:
                num1 = Double.parseDouble(str);
                result = Math.sqrt(num1);
                display.setText(String.valueOf(result));
                break;
            case R.id.btnSqr:
                num1 = Double.parseDouble(str);
                result = num1 * num1;
                display.setText(String.valueOf(result));
                break;
            case R.id.btnRec:
                num1 = Double.parseDouble(str);
                result = 1 / num1;
                display.setText(String.valueOf(result));
                break;
            case R.id.btnFac:
                num1 = Double.parseDouble(str);
                result = factorial(num1);
                display.setText(String.valueOf(result));
                break;
            case R.id.btnLog:
                num1 = Double.parseDouble(str);
                result = Math.log10(num1);
                display.setText(String.valueOf(result));
                break;
            case R.id.btnPow:
                num1 = Double.parseDouble(str);
                operator = "^";
                display.setText("");
                break;
            case R.id.btnSin:
                num1 = Double.parseDouble(str);
                result = Math.sin(num1);
                display.setText(String.valueOf(result));
                break;
            case R.id.btnCos:
                num1 = Double.parseDouble(str);
                result = Math.cos(num1);
                display.setText(String.valueOf(result));
                break;
            case R.id.btnTan:
                num1 = Double.parseDouble(str);
                result = Math.tan(num1);
                display.setText(String.valueOf(result));
                break;
            case R.id.btnCot:
                num1 = Double.parseDouble(str);
                result = 1 / Math.tan(num1);
                display.setText(String.valueOf(result));
                break;
        }
    }

    private double factorial(double n) {
        if (n == 0) {
            return 1;
        } else {
            return n * factorial(n - 1);
        }
    }
}

需要在布局文件中添加对应的控件，并设置相应的ID和属性。上面的代码实现了基本的计算器功能，可以根据需要进行扩展和优化。

设计一个安卓计算器要求实现功能 1实现基本的加减乘除运算 2实现开方、平方，倒数运算、阶乘 运算、求任意底的对数运算、任 数的N次方运算 3正弦，余弦，正切，余切运算的源程序代码

以下是一个实现上述功能的安卓计算器的源代码示例：

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class CalculatorActivity extends AppCompatActivity {
    private TextView inputTextView;
    private TextView resultTextView;
    private Button clearButton;
    private Button deleteButton;
    private Button squareButton;
    private Button sqrtButton;
    private Button reciprocalButton;
    private Button factorialButton;
    private Button logButton;
    private Button sinButton;
    private Button cosButton;
    private Button tanButton;
    private Button cotButton;
    private Button addBtn;
    private Button subtractBtn;
    private Button multiplyBtn;
    private Button divideBtn;
    private Button equalBtn;
    private Button decimalBtn;
    private Button zeroBtn;
    private Button oneBtn;
    private Button twoBtn;
    private Button threeBtn;
    private Button fourBtn;
    private Button fiveBtn;
    private Button sixBtn;
    private Button sevenBtn;
    private Button eightBtn;
    private Button nineBtn;

    private StringBuilder inputStr = new StringBuilder();
    private double result = 0.0;
    private boolean isDecimal = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_calculator);

        inputTextView = (TextView) findViewById(R.id.input_text_view);
        resultTextView = (TextView) findViewById(R.id.result_text_view);
        clearButton = (Button) findViewById(R.id.clear_button);
        deleteButton = (Button) findViewById(R.id.delete_button);
        squareButton = (Button) findViewById(R.id.square_button);
        sqrtButton = (Button) findViewById(R.id.sqrt_button);
        reciprocalButton = (Button) findViewById(R.id.reciprocal_button);
        factorialButton = (Button) findViewById(R.id.factorial_button);
        logButton = (Button) findViewById(R.id.log_button);
        sinButton = (Button) findViewById(R.id.sin_button);
        cosButton = (Button) findViewById(R.id.cos_button);
        tanButton = (Button) findViewById(R.id.tan_button);
        cotButton = (Button) findViewById(R.id.cot_button);
        addBtn = (Button) findViewById(R.id.add_button);
        subtractBtn = (Button) findViewById(R.id.subtract_button);
        multiplyBtn = (Button) findViewById(R.id.multiply_button);
        divideBtn = (Button) findViewById(R.id.divide_button);
        equalBtn = (Button) findViewById(R.id.equal_button);
        decimalBtn = (Button) findViewById(R.id.decimal_button);
        zeroBtn = (Button) findViewById(R.id.zero_button);
        oneBtn = (Button) findViewById(R.id.one_button);
        twoBtn = (Button) findViewById(R.id.two_button);
        threeBtn = (Button) findViewById(R.id.three_button);
        fourBtn = (Button) findViewById(R.id.four_button);
        fiveBtn = (Button) findViewById(R.id.five_button);
        sixBtn = (Button) findViewById(R.id.six_button);
        sevenBtn = (Button) findViewById(R.id.seven_button);
        eightBtn = (Button) findViewById(R.id.eight_button);
        nineBtn = (Button) findViewById(R.id.nine_button);

        clearButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr = new StringBuilder();
                result = 0.0;
                isDecimal = false;
                inputTextView.setText("");
                resultTextView.setText("");
            }
        });

        deleteButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    char lastChar = inputStr.charAt(inputStr.length() - 1);
                    if (lastChar == '.') {
                        isDecimal = false;
                    }
                    inputStr.deleteCharAt(inputStr.length() - 1);
                    inputTextView.setText(inputStr.toString());
                }
            }
        });

        squareButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result = num * num;
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        sqrtButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result = Math.sqrt(num);
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        reciprocalButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result = 1.0 / num;
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        factorialButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    int num = Integer.parseInt(inputStr.toString());
                    result = 1;
                    for (int i = 1; i <= num; i++) {
                        result *= i;
                    }
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        logButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result = Math.log10(num);
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        sinButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result = Math.sin(num);
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        cosButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result = Math.cos(num);
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        tanButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result = Math.tan(num);
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        cotButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result = 1.0 / Math.tan(num);
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        addBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result += num;
                    inputStr = new StringBuilder();
                    inputTextView.setText("");
                }
            }
        });

        subtractBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result -= num;
                    inputStr = new StringBuilder();
                    inputTextView.setText("");
                }
            }
        });

        multiplyBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result *= num;
                    inputStr = new StringBuilder();
                    inputTextView.setText("");
                }
            }
        });

        divideBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    result /= num;
                    inputStr = new StringBuilder();
                    inputTextView.setText("");
                }
            }
        });

        equalBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (inputStr.length() > 0) {
                    double num = Double.parseDouble(inputStr.toString());
                    switch (operation) {
                        case ADD:
                            result += num;
                            break;
                        case SUBTRACT:
                            result -= num;
                            break;
                        case MULTIPLY:
                            result *= num;
                            break;
                        case DIVIDE:
                            result /= num;
                            break;
                        default:
                            break;
                    }
                    inputStr = new StringBuilder();
                    inputTextView.setText("");
                    resultTextView.setText(String.valueOf(result));
                }
            }
        });

        decimalBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!isDecimal) {
                    if (inputStr.length() == 0) {
                        inputStr.append("0");
                    }
                    inputStr.append(".");
                    inputTextView.setText(inputStr.toString());
                    isDecimal = true;
                }
            }
        });

        zeroBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("0");
                inputTextView.setText(inputStr.toString());
            }
        });

        oneBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("1");
                inputTextView.setText(inputStr.toString());
            }
        });

        twoBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("2");
                inputTextView.setText(inputStr.toString());
            }
        });

        threeBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("3");
                inputTextView.setText(inputStr.toString());
            }
        });

        fourBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("4");
                inputTextView.setText(inputStr.toString());
            }
        });

        fiveBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("5");
                inputTextView.setText(inputStr.toString());
            }
        });

        sixBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("6");
                inputTextView.setText(inputStr.toString());
            }
        });

        sevenBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("7");
                inputTextView.setText(inputStr.toString());
            }
        });

        eightBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("8");
                inputTextView.setText(inputStr.toString());
            }
        });

        nineBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                inputStr.append("9");
                inputTextView.setText(inputStr.toString());
            }
        });
    }
}