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>
<?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>
<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.