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Generate signed apk in android studio | sign your app

Generate signed apk file in android studio of 2019. About Android Studio , Basic of Android studio and need of signed .apk file for Play store console ...

This App Belong to Math Solver , In this app we can handle the problem of math like finding value of sin, cos, tan, square root, cube root , and factorial values .you can visit my app on Play Store App link is given this link create signed apk for play store.

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MainActivity.java

package com.deep.mathsolve;

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

public class MainActivity extends AppCompatActivity {
    EditText et_input;
    TextView tv_answer;
    Button b_sin, b_cos, b_tan, b_factorial, b_root, b_pow2, b_pow3;

    double input, answer;

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

        et_input = (EditText) findViewById(R.id.et_input);
        tv_answer = (TextView) findViewById(R.id.tv_answer);
        b_sin = (Button) findViewById(R.id.b_sin);
        b_cos = (Button) findViewById(R.id.b_cos);
        b_tan = (Button) findViewById(R.id.b_tan);
        b_factorial = (Button) findViewById(R.id.b_factorial);
        b_root = (Button) findViewById(R.id.b_root);
        b_pow2 = (Button) findViewById(R.id.b_pow2);
        b_pow3 = (Button) findViewById(R.id.b_pow3);

        b_pow2.setText(Html.fromHtml("x<sup>2</sup>"));
        b_pow3.setText(Html.fromHtml("x<sup>3</sup>"));

        b_sin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                input = Double.parseDouble(et_input.getText().toString());
                answer = Math.sin(input);
                tv_answer.setText("sin:" +answer);
            }
        });

        b_cos.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                input = Double.parseDouble(et_input.getText().toString());
                answer = Math.cos(input);
                tv_answer.setText("cos:" +answer);
            }
        });

        b_tan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                input = Double.parseDouble(et_input.getText().toString());
                answer = Math.tan(input);
                tv_answer.setText("tan:" +answer);
            }
        });

        b_root.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                input = Double.parseDouble(et_input.getText().toString());
                answer = Math.sqrt(input);
                tv_answer.setText("root:" +answer);
            }
        });

        b_pow2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                input = Double.parseDouble(et_input.getText().toString());
                answer = Math.pow(input, 2);
                tv_answer.setText("sqare:" +answer);
            }
        });
        b_pow3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                input = Double.parseDouble(et_input.getText().toString());
                answer = Math.pow(input, 3);
                tv_answer.setText("cubic:" +answer);
            }
        });
        b_factorial.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                input = Double.parseDouble(et_input.getText().toString());
                answer = input;
                for (int i = (int)input - 1; i>1; i++)
                {
                    answer = answer + 1;
                }
                tv_answer.setText("factorial:" +answer);
            }
        });

    }
}

activity_main.xml File

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#F7F1E9A3"
    android:padding="10dp"
    android:paddingLeft="0dp"
    android:paddingTop="0dp"
    android:paddingRight="0dp"
    android:paddingBottom="0dp"
    tools:context=".MainActivity">

    <EditText
        android:id="@+id/et_input"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_marginTop="11dp"
        android:ems="10"
        android:inputType="numberDecimal|numberSigned"
        android:textColor="#009688" />

    <TextView
        android:id="@+id/tv_answer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="26dp"
        android:gravity="center"
        android:text=""
        android:textColor="#3F51B5"
        android:textSize="24dp" />

    <include
        layout="@layout/buttons"
        android:layout_width="401dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="52dp" />


</RelativeLayout>
activity_main.xml

buttons.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    android:background="#F0E8A9"
    android:orientation="vertical">

    <Button
        android:id="@+id/b_sin"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="130dp"
        android:background="#8AE98E"
        android:text="sin"
        android:textAllCaps="false"
        android:textColor="#161515"
        android:textSize="14sp"
        android:textStyle="bold" />

    <Button
        android:id="@+id/b_cos"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#EC87FD"
        android:text="cos"
        android:textAllCaps="false" />

    <Button
        android:id="@+id/b_tan"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#EBBB75"
        android:text="tan"
        android:textAllCaps="false" />

    <Button
        android:id="@+id/b_root"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#99CBF3"
        android:text="@string/root"
        android:textAllCaps="false" />


    <Button
        android:id="@+id/b_pow2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#EABBF1"
        android:text="x2"
        android:textAllCaps="false" />

    <Button
        android:id="@+id/b_pow3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#8BC34A"
        android:text="x3"
        android:textAllCaps="false" />

    <Button
        android:id="@+id/b_factorial"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#2196F3"
        android:text="n!"
        android:textAllCaps="false" />

</LinearLayout>
<img loading=
Publish on Play Store

strings.xml

<resources>
    <string name="app_name">Math Solve</string>
    <string name="root">\u221a</string>
</resources>

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Conclusion

We have successfully generate signed apk Android application using Android Studio.


Cheers!

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Deepika
Deepikahttps://www.technicdude.in/
Hey, I'm Deepika a professional blogger and Experienced in Android Developer,Flutter Developer, PHP Web Developer. Technically sound Post graduate pursuing M.Tech in Computer Science and Engineering. I Love to gain every type of knowledge that's why i have done many courses in different fields like engineering and technology. Skilled in Java, HTML, CSS,Bootstrap,j query PHP, Python, SQL, C, C++,Firebase,MySQL,SQLite,JavaScript. Also I have learned Networking.
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