java - android - 错误 java.lang.NumberFormatException：对于输入字符串，程序停止工作

Question

代码是这样的，起初它运行正常，但是在添加按钮的新功能后，这段代码并没有像以前那样正常运行。请帮帮我，我这周星期三有一个提交。有可能这是一个错误吗？

package com.example.calculator;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;


public class MainActivity extends AppCompatActivity{
    TextView txtbtn;
    float mValueOne, mValueTwo;
    double a;
    double ans=0;
    boolean mAddition, mSubtract, mMultiplication, mDivision, mArithmetic, mReminder,
    power2nd, mSin, mCos, mTan, mSinH, mCosH, mTanH;
    ImageButton deletebutton;
    Button clearbutton, dividebutton, multiplybutton, button7, button8, button9, minusbutton,
            button4, button5, button6, plusbutton, button1, button2, button3, button0, pointbutton,
            equalbutton, xcubebutton, squarebutton, modulusbutton, exponentbutton, tenexponentbutton,
            piebutton, squarerootbutton, cuberootbutton, stpower2nd, xfactorialbutton, logbutton, lnbutton,
            sinbutton, cosbutton, tanbutton, sinhbutton, coshbutton, tanhbutton, oneoverxbutton, absbutton,
            floorbutton;


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

        View decorView = getWindow().getDecorView();
        decorView.setSystemUiVisibility(
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                //| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
                //| View.SYSTEM_UI_FLAG_FULLSCREEN);

        scientific_operation();

    }
    public void scientific_operation(){
        txtbtn = findViewById(R.id.txt);
        deletebutton = findViewById(R.id.BB);
        clearbutton = findViewById(R.id.C);
        dividebutton = findViewById(R.id.Bdivide);
        multiplybutton = findViewById(R.id.Bmulti);
        button7 = findViewById(R.id.B7);
        button8 = findViewById(R.id.B8);
        button9 = findViewById(R.id.B9);
        minusbutton = findViewById(R.id.Bsubtract);
        button4 = findViewById(R.id.B4);
        button5 = findViewById(R.id.B5);
        button6 = findViewById(R.id.B6);
        plusbutton = findViewById(R.id.Bplus);
        button1 = findViewById(R.id.B1);
        button2 = findViewById(R.id.B2);
        button3 = findViewById(R.id.B3);
        button0 = findViewById(R.id.B0);
        pointbutton = findViewById(R.id.MCdot);
        equalbutton = findViewById(R.id.Bequal);
        cuberootbutton = findViewById(R.id.cuberoot);
        squarerootbutton = findViewById(R.id.squareroot);
        xcubebutton = findViewById(R.id.powerX3);
        squarebutton = findViewById(R.id.powerX2);
        modulusbutton = findViewById(R.id.Bmod);
        exponentbutton = findViewById(R.id.expower);
        tenexponentbutton = findViewById(R.id.X10X);
        piebutton = findViewById(R.id.pi);
        oneoverxbutton = findViewById(R.id.onebyx);
        xfactorialbutton = findViewById(R.id.xfactorial);
        stpower2nd = findViewById(R.id.power2nd);
        logbutton = findViewById(R.id.log);
        lnbutton = findViewById(R.id.ln);
        sinhbutton = findViewById(R.id.arcsin);
        coshbutton = findViewById(R.id.arccos);
        tanhbutton = findViewById(R.id.arctan);
        sinbutton = findViewById(R.id.sin);
        cosbutton = findViewById(R.id.cos);
        tanbutton = findViewById(R.id.tan);
        absbutton = findViewById(R.id.abs);
        floorbutton = findViewById(R.id.floor);


        absbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try {
                    a = Math.abs(Double.parseDouble(txtbtn.getText().toString()));
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);

                }
                catch(Exception e){
                    //
                }
            }
        });

        floorbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = Math.floor(Double.parseDouble(txtbtn.getText().toString()));
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e){
                    //
                }
            }
        });

        stpower2nd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    mValueOne = Float.parseFloat(txtbtn.getText() + "");
                    power2nd = true;
                    txtbtn.setText(null);
                }
                catch(Exception e){
                    //
                }
            }
        });

        deletebutton.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view){
                try{
                    String str;
                    str = txtbtn.getText().toString();
                    str = str.substring(0, str.length()-1);
                    txtbtn.setText(str);
                }
                catch(Exception e){
                    //
                }
            }
        });

        clearbutton.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view){
                txtbtn.setText("");
            }
        });

        dividebutton.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view){
                txtbtn.setText(null);
            }
        });

        button1.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "1");
                mArithmetic = true;
            }
        });

        button2.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "2");
                mArithmetic = true;
            }
        });

        button3.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "3");
                mArithmetic = true;
            }
        });

        button4.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "4");
                mArithmetic = true;
            }
        });

        button5.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "5");
                mArithmetic = true;
            }
        });

        button6.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "6");
                mArithmetic = true;
            }
        });

        button7.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "7");
                mArithmetic = true;
            }
        });

        button8.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "8");
                mArithmetic = true;
            }
        });

        button9.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "9");
                mArithmetic = true;
            }
        });

        button0.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                txtbtn.setText(txtbtn.getText()+ "0");
                mArithmetic = true;
            }
        });

        plusbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    mValueOne = Float.parseFloat(txtbtn.getText() + "");
                    mAddition = true;
                    txtbtn.setText(null);
                }
                catch(Exception e){
                    //
                }
            }
        });

        minusbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    mValueOne = Float.parseFloat(txtbtn.getText() + "");
                    mSubtract = true;
                    txtbtn.setText(null);
                }
                catch(Exception e){
                    //
                }
            }
        });

        multiplybutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    mValueOne = Float.parseFloat(txtbtn.getText() + "");
                    mMultiplication = true;
                    txtbtn.setText(null);
                }
                catch(Exception e){
                    //
                }
            }
        });

        dividebutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    mValueOne = Float.parseFloat(txtbtn.getText() + "");
                    mDivision = true;
                    txtbtn.setText(null);
                }
                catch(Exception e){
                    //
                }
            }
        });

        cuberootbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = Math.cbrt(Double.parseDouble(txtbtn.getText().toString()));
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e){
                    //
                }
            }
        });

        squarerootbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = Math.sqrt(Double.parseDouble(txtbtn.getText().toString()));
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e){
                    //
                }
            }
        });

        xcubebutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = Math.pow(Double.parseDouble(txtbtn.getText().toString()), 3);
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e){
                    //
                }
            }
        });

        squarebutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = Math.pow(Double.parseDouble(txtbtn.getText().toString()), 2);
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e){
                    //
                }
            }
        });

        modulusbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    mValueOne = Float.parseFloat(txtbtn.getText() + "");
                    mReminder = true;
                    txtbtn.setText(null);
                }
                catch(Exception e){
                    //
                }
            }
        });

        exponentbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = Math.exp(Double.parseDouble(txtbtn.getText().toString()));
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e){
                    //
                }
            }
        });

        tenexponentbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    int n = Integer.parseInt(txtbtn.getText().toString());
                    int exp = (int) Math.pow(10,n);
                    txtbtn.setText(exp + "");
                }
                catch(Exception e){
                    //
                }
            }
        });

        piebutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                txtbtn.setText(Math.PI + "");

            }
        });

        oneoverxbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = 1/Double.parseDouble(txtbtn.getText().toString());
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e){
                    //
                }
            }
        });

        xfactorialbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = Double.parseDouble(txtbtn.getText().toString());
                    int er = 0; double i, s = 1;
                    if(a < 0){
                        er = 20;
                    }
                    else{
                        for(i = 2; i <= a; i += 1.0)
                            s *= i;
                    }
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + s);
                }
                catch(Exception e){
                    //
                }
            }
        });

        logbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    a = Math.log10(Double.parseDouble(txtbtn.getText().toString()));
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e){
                    //
                }
            }
        });

        lnbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try {
                    a = Math.log(Double.parseDouble(txtbtn.getText().toString()));
                    txtbtn.setText("");
                    txtbtn.setText(txtbtn.getText().toString() + a);
                }
                catch(Exception e) {
                    //
                }
            }
        });

        sinhbutton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                txtbtn.setText("arc_sin");
                mSinH = true;
            }
        });

        coshbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                txtbtn.setText("arc_cos");
                mCosH = true;
            }
        });

        tanhbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                txtbtn.setText("arc_tan");
                mTanH = true;
            }
        });

        sinbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                txtbtn.setText("sin");
                mSin = true;
            }
        });

        cosbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                txtbtn.setText("cos");
                mCos = true;
            }
        });

        tanbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                txtbtn.setText("tan");
                mTan = true;
            }
        });

        exponentbutton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                try{
                    Double n = Double.parseDouble(txtbtn.getText().toString());
                    Double exp = Math.pow(2.718281828, n);
                    txtbtn.setText(exp + "");
                }
                catch(Exception e){
                    //
                }
            }
        });

        equalbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(mSinH){
                    if(mArithmetic){
                        String str;
                        str = txtbtn.getText().toString();
                        str = str.substring(4);
                        a = Math.asin(Double.parseDouble(str));
                        txtbtn.setText(a + "");
                        mArithmetic = false;
                        mSinH = false;

                    }
                }
                if(mCosH){
                    if(mArithmetic){
                        String str;
                        str = txtbtn.getText().toString();
                        str = str.substring(4);
                        a = Math.acos(Double.parseDouble(str));
                        txtbtn.setText(a + "");
                        mArithmetic = false;
                        mCosH = false;

                    }
                }
                if(mTanH){
                    if(mArithmetic){
                        String str;
                        str = txtbtn.getText().toString();
                        str = str.substring(4);
                        a = Math.atan(Double.parseDouble(str));
                        txtbtn.setText(a + "");
                        mArithmetic = false;
                        mTanH = false;

                    }
                }

                if(mAddition){
                    mValueTwo = Float.parseFloat(txtbtn.getText() + "");
                    txtbtn.setText(mValueOne + mValueTwo + "");
                    mAddition = false;
                }

                if(mSubtract){
                    mValueTwo = Float.parseFloat(txtbtn.getText() + "");
                    txtbtn.setText(mValueOne - mValueTwo + "");
                    mSubtract = false;
                }

                if(mMultiplication){
                    mValueTwo = Float.parseFloat(txtbtn.getText() + "");
                    txtbtn.setText(mValueOne * mValueTwo + "");
                    mMultiplication = false;

                }
                if(mDivision){
                    mValueTwo = Float.parseFloat(txtbtn.getText() + "");
                    txtbtn.setText(mValueOne / mValueTwo + "");
                    mDivision = false;
                }
                if(mReminder){
                    mValueTwo = Float.parseFloat(txtbtn.getText() + "");
                    txtbtn.setText(mValueOne % mValueTwo + "");
                    mReminder = false;
                }
                if(power2nd){
                    mValueTwo = Float.parseFloat(txtbtn.getText() + "");
                    double exp = Math.pow(mValueOne, mValueTwo);
                    txtbtn.setText(exp + "");
                    power2nd = false;
                }

                if(mSin){
                    if(mArithmetic){
                        String str;
                        str = txtbtn.getText().toString();
                        str = str.substring(3);
                        a = Math.sin(Double.parseDouble(str));
                        txtbtn.setText(a + "");
                        mArithmetic = false;
                        mSin = false;
                    }
                }
                if(mCos){
                    if(mArithmetic){
                        String str;
                        str = txtbtn.getText().toString();
                        str = str.substring(3);
                        a = Math.cos(Double.parseDouble(str));
                        txtbtn.setText(a + "");
                        mArithmetic = false;
                        mCos = false;
                    }
                }
                if(mTan){
                    if(mArithmetic){
                        String str;
                        double a;
                        str = txtbtn.getText().toString();
                        str = str.substring(3);
                        a = Math.tan(Float.parseFloat(str));
                        txtbtn.setText(a + "");
                        mArithmetic = false;
                        mTan = false;
                    }
                }
                ans = Double.parseDouble(txtbtn.getText().toString());
            }
        });

        pointbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                txtbtn.setText(txtbtn.getText() + ".");
            }
        });

    }

}

这是它显示的程序错误，我尝试在此页面中搜索几个问题，但实际上并没有得到预期的答案

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.calculator, PID: 1574
    java.lang.NumberFormatException: For input string: "sin1"
        at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2043)
        at sun.misc.FloatingDecimal.parseDouble(FloatingDecimal.java:110)
        at java.lang.Double.parseDouble(Double.java:538)
        at com.example.calculator.MainActivity$40.onClick(MainActivity.java:536)
        at android.view.View.performClick(View.java:7125)
        at android.view.View.performClickInternal(View.java:7102)
        at android.view.View.access$3500(View.java:801)
        at android.view.View$PerformClick.run(View.java:27336)
        at android.os.Handler.handleCallback(Handler.java:883)
        at android.os.Handler.dispatchMessage(Handler.java:100)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7356)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)

标签： javaandroidnumberformatexception