Add tool Base Converter.

.idea/dbnavigator.xml

@@ -2,7 +2,7 @@
 <project version="4">
   <component name="DBNavigator.Project.DataEditorManager">
     <record-view-column-sorting-type value="BY_INDEX" />
-    <value-preview-text-wrapping value="true" />
+    <value-preview-text-wrapping value="false" />
     <value-preview-pinned value="false" />
   </component>
   <component name="DBNavigator.Project.DataExportManager">
@@ -27,6 +27,9 @@
     <show-object-properties value="true" />
     <loaded-nodes />
   </component>
+  <component name="DBNavigator.Project.DatabaseEditorStateManager">
+    <last-used-providers />
+  </component>
   <component name="DBNavigator.Project.DatabaseFileManager">
     <open-files />
   </component>
@@ -99,6 +102,7 @@
         <object-type name="FUNCTION" sorting-type="NAME" />
         <object-type name="PROCEDURE" sorting-type="NAME" />
         <object-type name="ARGUMENT" sorting-type="POSITION" />
+        <object-type name="TYPE ATTRIBUTE" sorting-type="POSITION" />
       </sorting>
       <default-editors>
         <object-type name="VIEW" editor-type="SELECTION" />

.idea/deploymentTargetDropDown.xml

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="deploymentTargetDropDown">
-    <targetSelectedWithDropDown>
-      <Target>
-        <type value="QUICK_BOOT_TARGET" />
-        <deviceKey>
-          <Key>
-            <type value="VIRTUAL_DEVICE_PATH" />
-            <value value="G:\Android\Avd\Pixel_4_API_31.avd" />
-          </Key>
-        </deviceKey>
-      </Target>
-    </targetSelectedWithDropDown>
-    <timeTargetWasSelectedWithDropDown value="2022-09-14T07:53:33.671044700Z" />
-  </component>
-</project>

.idea/gradle.xml

@@ -7,6 +7,7 @@
         <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="Embedded JDK" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />

.idea/misc.xml

@@ -119,7 +119,7 @@
       </map>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/src/main/AndroidManifest.xml

@@ -67,6 +67,16 @@
             <intent-filter>
                 <action android:name="oxygentoolbox.ip" />
 
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".tools.converter.MainActivity"
+            android:exported="false"
+            android:theme="@style/Theme.OxygenToolbox.Default">
+            <intent-filter>
+                <action android:name="oxygentoolbox.converter" />
+
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>

app/src/main/assets/json/BasicTools.json

@@ -36,6 +36,13 @@
             "en": "IP Query"
           },
           "activity": "com.fatapp.oxygentoolbox.tools.ip.MainActivity"
+        },
+        {
+          "text": {
+            "cn": "\u8fdb\u5236\u8f6c\u6362",
+            "en": "Base Converter"
+          },
+          "activity": "com.fatapp.oxygentoolbox.tools.converter.MainActivity"
         }
       ]
     }

app/src/main/java/com/fatapp/oxygentoolbox/tools/converter/MainActivity.java

@@ -0,0 +1,161 @@
+package com.fatapp.oxygentoolbox.tools.converter;
+
+import android.graphics.drawable.AnimatedVectorDrawable;
+import android.os.Bundle;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.Nullable;
+
+import com.fatapp.oxygentoolbox.R;
+import com.fatapp.oxygentoolbox.util.HexConversionUtils;
+import com.fatapp.oxygentoolbox.util.ResourceUtil;
+import com.fatapp.oxygentoolbox.util.tool.BaseActivityNormal;
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+import com.google.android.material.snackbar.Snackbar;
+
+import java.util.regex.Pattern;
+
+public class MainActivity extends BaseActivityNormal {
+
+    private final String[] BASE_ITEMS = new String[35];
+
+    {
+        for (int i = 0; i < 35; i++) {
+            switch (i + 2) {
+                case 2:
+                    BASE_ITEMS[i] = ResourceUtil.getString(R.string.tool_converter_base_2);
+                    break;
+                case 8:
+                    BASE_ITEMS[i] = ResourceUtil.getString(R.string.tool_converter_base_8);
+                    break;
+                case 10:
+                    BASE_ITEMS[i] = ResourceUtil.getString(R.string.tool_converter_base_10);
+                    break;
+                case 16:
+                    BASE_ITEMS[i] = ResourceUtil.getString(R.string.tool_converter_base_16);
+                    break;
+                default:
+                    BASE_ITEMS[i] = String.valueOf(i + 2);
+            }
+        }
+    }
+
+    private int baseFrom = 10;
+    private int baseTo = 2;
+
+    private TextView textViewBaseFrom;
+    private ImageView imageViewSwap;
+    private TextView textViewBaseTo;
+    private EditText editTextFrom;
+    private TextView textViewTo;
+    private ImageView imageViewConvert;
+
+    private void initView() {
+        textViewBaseFrom = findViewById(R.id.text_view_base_from);
+        imageViewSwap = findViewById(R.id.image_view_swap);
+        textViewBaseTo = findViewById(R.id.text_view_base_to);
+        editTextFrom = findViewById(R.id.edit_text_from);
+        textViewTo = findViewById(R.id.text_view_to);
+        imageViewConvert = findViewById(R.id.image_view_convert);
+    }
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        super.loadView(this, R.layout.activity_tool_converter);
+
+        initView();
+        initBaseChoose();
+        initConverter();
+    }
+
+    private void initBaseChoose() {
+        textViewBaseFrom.setOnClickListener(view -> new MaterialAlertDialogBuilder(this)
+                .setTitle(ResourceUtil.getString(R.string.tool_converter_choose_base))
+                .setItems(BASE_ITEMS, (dialogInterface, i) -> {
+                    textViewBaseFrom.setText(BASE_ITEMS[i]);
+                    baseFrom = i + 2;
+                    editTextFrom.setText(null);
+                    textViewTo.setText(null);
+                })
+                .show());
+
+        textViewBaseTo.setOnClickListener(view -> new MaterialAlertDialogBuilder(this)
+                .setTitle(ResourceUtil.getString(R.string.tool_converter_choose_base))
+                .setItems(BASE_ITEMS, (dialogInterface, i) -> {
+                    textViewBaseTo.setText(BASE_ITEMS[i]);
+                    baseTo = i + 2;
+                    if (textViewTo.getText().length() > 0) {
+                        convert();
+                    }
+                })
+                .show());
+
+        imageViewSwap.setOnClickListener(view -> {
+            AnimatedVectorDrawable animatedVectorDrawable = (AnimatedVectorDrawable) imageViewSwap.getDrawable();
+            animatedVectorDrawable.start();
+            {
+                int temp = baseFrom;
+                baseFrom = baseTo;
+                baseTo = temp;
+            }
+            {
+                String temp = textViewBaseFrom.getText().toString();
+                textViewBaseFrom.setText(textViewBaseTo.getText());
+                textViewBaseTo.setText(temp);
+            }
+            editTextFrom.setText(null);
+            textViewTo.setText(null);
+        });
+    }
+
+    private void initConverter() {
+        StringBuffer beforeText = new StringBuffer();
+        editTextFrom.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
+                beforeText.delete(0, beforeText.length());
+                beforeText.append(charSequence);
+            }
+
+            @Override
+            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
+                imageViewConvert.setEnabled(charSequence.length() != 0);
+                if (!Pattern.compile(HexConversionUtils.getRegExp(baseFrom)).matcher(charSequence).matches()) {
+                    editTextFrom.setText(beforeText.toString());
+                    editTextFrom.setSelection(beforeText.toString().length() - 1);
+                } else {
+                    textViewTo.setText(null);
+                }
+            }
+
+            @Override
+            public void afterTextChanged(Editable editable) {
+            }
+        });
+
+        textViewTo.setOnFocusChangeListener((view, b) -> ((InputMethodManager) getSystemService(INPUT_METHOD_SERVICE)).hideSoftInputFromWindow(editTextFrom.getWindowToken(), 0));
+
+        imageViewConvert.setEnabled(false);
+        imageViewConvert.setOnClickListener(view -> convert());
+    }
+
+    private void convert() {
+        ((InputMethodManager) getSystemService(INPUT_METHOD_SERVICE)).hideSoftInputFromWindow(editTextFrom.getWindowToken(), 0);
+        if (baseFrom == baseTo) {
+            textViewTo.setText(editTextFrom.getText());
+        }
+        try {
+            String result = HexConversionUtils.decimalToBase(HexConversionUtils.baseToDecimal(editTextFrom.getText().toString(), baseFrom), baseTo);
+            textViewTo.setText(result);
+        } catch (Exception e) {
+            textViewTo.setText(ResourceUtil.getString(R.string.base_nan));
+            Snackbar.make(getConstraintLayoutRoot(), ResourceUtil.getString(R.string.tool_converter_illegal_number), Snackbar.LENGTH_LONG).show();
+        }
+    }
+}

app/src/main/java/com/fatapp/oxygentoolbox/util/HexConversionUtils.java

@@ -0,0 +1,151 @@
+package com.fatapp.oxygentoolbox.util;
+
+import java.math.BigDecimal;
+import java.util.regex.Pattern;
+
+public class HexConversionUtils {
+    private static int handleLetter(String letter) {
+        return Integer.parseInt(letter, 36);
+    }
+
+    private static String handleNumber(int number) {
+        return Integer.toString(number, 36);
+    }
+
+    public static String getRegExp(int base) {
+        String regExp;
+        if (base <= 10) {
+            regExp = "^[+\\-]?[0-" + (base - 1) + "]*(?:[0-" + (base - 1) + "][.][0-" + (base - 1) + "]*)?";
+        } else {
+            String letter = Integer.toString(base - 1, 36);
+            regExp = "^[+\\-]?[0-9a-" + letter + "]*(?:[0-9a-" + letter + "][.][0-9a-" + letter + "]*)?";
+        }
+        return regExp;
+    }
+
+    public static String getStrictRegExp(int base) {
+        String regExp;
+        if (base <= 10) {
+            regExp = "^[+\\-]?[0-" + (base - 1) + "]+(?:[.][0-" + (base - 1) + "]+)?$";
+        } else {
+            String letter = Integer.toString(base - 1, 36);
+            regExp = "^[+\\-]?[0-9a-" + letter + "]+(?:[.][0-9a-" + letter + "]+)?$";
+        }
+        return regExp;
+    }
+
+    public static boolean checkNumber(String number, int base) {
+        return Pattern.matches(getStrictRegExp(base), number);
+    }
+
+    private static String baseToDecimal_(String number, int base) {
+        if (base == 10) {
+            return number;
+        }
+        BigDecimal result = new BigDecimal(0);
+        String[] data = new StringBuilder(number).reverse().toString().split("");
+        for (int i = 0; i < data.length; i++) {
+            result = result.add(BigDecimal.valueOf(handleLetter(data[i]) * Math.pow(base, i)));
+        }
+        return result.toString().split("\\.")[0];
+    }
+
+    private static String decimalToBase_(String decimal, int base) {
+        if (base == 10) {
+            return decimal;
+        }
+        StringBuilder result = new StringBuilder();
+        BigDecimal quotient = new BigDecimal(decimal);
+        while (quotient.compareTo(new BigDecimal(base)) > -1) {
+            BigDecimal[] divideAndRemainder = quotient.divideAndRemainder(new BigDecimal(base));
+            quotient = divideAndRemainder[0];
+            BigDecimal remainder = divideAndRemainder[1];
+            result.insert(0, handleNumber(remainder.intValue()));
+        }
+        result.insert(0, handleNumber(quotient.intValue()));
+        return result.toString();
+    }
+
+    private static String _baseToDecimal(String number, int base) {
+        if (base == 10) {
+            return number;
+        }
+        BigDecimal result = new BigDecimal(0);
+        String[] data = number.split("");
+        for (int i = 0; i < data.length; i++) {
+            result = result.add(BigDecimal.valueOf(handleLetter(data[i]) * Math.pow(base, -1 * (i + 1))));
+        }
+        return result.toString().split("\\.")[1];
+    }
+
+    private static String _decimalToBase(String decimal, int base) {
+        if (base == 10) {
+            return decimal;
+        }
+        BigDecimal bigDecimal = new BigDecimal("0." + decimal);
+        StringBuilder result = new StringBuilder();
+
+        while (bigDecimal.compareTo(new BigDecimal(0)) > 0 && result.length() < 50) {
+            bigDecimal = bigDecimal.multiply(new BigDecimal(base));
+            if (bigDecimal.toString().contains("E")) {
+                break;
+            }
+            if (bigDecimal.toString().contains(".99999")) {
+                result.append(handleNumber(Integer.parseInt(bigDecimal.toString().split("\\.")[0]) + 1));
+                break;
+            }
+            result.append(handleNumber(Integer.parseInt(bigDecimal.toString().split("\\.")[0])));
+            bigDecimal = new BigDecimal("0." + bigDecimal.toString().split("\\.")[1]);
+        }
+        return result.toString();
+    }
+
+    public static String baseToDecimal(String number, int base) throws Exception{
+        if (!checkNumber(number, base)) {
+            throw new Exception("Illegal number");
+        }
+        StringBuilder result = new StringBuilder();
+
+        String sign = "";
+        if (number.charAt(0) == '-' || number.charAt(0) == '+') {
+            sign = number.substring(0, 1);
+            number = number.substring(1);
+        }
+
+        if (!number.contains(".")) {
+            result.append(baseToDecimal_(number, base));
+        } else {
+            String[] data = number.split("\\.");
+            result.append(baseToDecimal_(data[0], base));
+            result.append(".");
+            result.append(_baseToDecimal(data[1], base));
+        }
+
+        result.insert(0, sign);
+
+        return result.toString();
+    }
+
+    public static String decimalToBase(String number, int base) {
+        StringBuilder result = new StringBuilder();
+
+        String sign = "";
+        if (number.charAt(0) == '-' || number.charAt(0) == '+') {
+            sign = number.substring(0, 1);
+            number = number.substring(1);
+        }
+
+        if (!number.contains(".")) {
+            result.append(decimalToBase_(number, base));
+        } else {
+            String[] data = number.split("\\.");
+            result.append(decimalToBase_(data[0], base));
+            result.append(".");
+            result.append(_decimalToBase(data[1], base));
+        }
+
+        result.insert(0, sign);
+
+        return result.toString();
+    }
+}

app/src/main/res/drawable/ic_tool_converter_convert.xml

@@ -0,0 +1,14 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="56dp"
+    android:height="56dp"
+    android:autoMirrored="true"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="?attr/app_theme"
+        android:pathData="M 0 12 C 0 5.374 5.374 0 12 0 C 18.627 0 24 5.374 24 12 C 24 18.627 18.627 24 12 24 C 5.374 24 0 18.627 0 12 Z" />
+
+    <path
+        android:fillColor="?attr/app_on_theme"
+        android:pathData="M18.67,12l-1.17,-1.17L12.83,15.48V5.33h-1.67v10.14l-4.65,-4.66L5.33,12l6.67,6.67 6.67,-6.67z" />
+</vector>

app/src/main/res/layout/activity_tool_converter.xml

@@ -0,0 +1,108 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout 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"
+    tools:context=".tools.converter.MainActivity">
+
+    <LinearLayout
+        android:id="@+id/linear_layout_base"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/tool_converter_layout_margin"
+        android:background="@drawable/background_radius"
+        android:gravity="center"
+        android:orientation="horizontal"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <TextView
+            android:id="@+id/text_view_base_from"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="center"
+            android:text="@string/tool_converter_base_10"
+            android:textColor="?attr/app_theme"
+            android:textSize="@dimen/tool_converter_text_size" />
+
+        <ImageView
+            android:id="@+id/image_view_swap"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:contentDescription="Swap"
+            android:padding="@dimen/tool_converter_clickable_padding"
+            android:src="@drawable/animation_swap_horizon" />
+
+        <TextView
+            android:id="@+id/text_view_base_to"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="center"
+            android:text="@string/tool_converter_base_2"
+            android:textColor="?attr/app_theme"
+            android:textSize="@dimen/tool_converter_text_size" />
+
+    </LinearLayout>
+
+    <EditText
+        android:id="@+id/edit_text_from"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/tool_converter_edit_text_view_height"
+        android:layout_margin="@dimen/tool_converter_layout_margin"
+        android:autofillHints="text"
+        android:background="@drawable/background_radius"
+        android:gravity="start|top"
+        android:hint="@string/tool_converter_please_enter_text"
+        android:inputType="text"
+        android:maxLength="850"
+        android:paddingHorizontal="@dimen/tool_converter_edit_text_view_padding"
+        android:paddingTop="@dimen/tool_converter_edit_text_view_padding"
+        android:paddingBottom="@dimen/tool_converter_edit_text_view_padding_plus"
+        android:textColor="?attr/app_text_theme"
+        android:textSize="@dimen/tool_converter_text_size"
+        app:layout_constraintTop_toBottomOf="@id/linear_layout_base" />
+
+
+    <TextView
+        android:id="@+id/text_view_to"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/tool_converter_edit_text_view_height"
+        android:layout_margin="@dimen/tool_converter_layout_margin"
+        android:autofillHints="text"
+        android:background="@drawable/background_radius"
+        android:gravity="start|top"
+        android:paddingHorizontal="@dimen/tool_converter_edit_text_view_padding"
+        android:paddingTop="@dimen/tool_converter_edit_text_view_padding_plus"
+        android:paddingBottom="@dimen/tool_converter_edit_text_view_padding"
+        android:textColor="?attr/app_text_theme"
+        android:textIsSelectable="true"
+        android:textSize="@dimen/tool_converter_text_size"
+        app:layout_constraintTop_toBottomOf="@id/edit_text_from" />
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:background="@drawable/background_round"
+        android:padding="@dimen/tool_converter_clickable_padding"
+        app:layout_constraintBottom_toTopOf="@id/text_view_to"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/edit_text_from">
+
+        <ImageView
+            android:id="@+id/image_view_convert"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:clickable="true"
+            android:contentDescription="Convert"
+            android:focusable="true"
+            android:foreground="@drawable/foreground_ripple"
+            android:src="@drawable/ic_tool_converter_convert"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values-zh-rCN/strings.xml

@@ -87,4 +87,10 @@
     <string name="tool_ip_province">省份</string>
     <string name="tool_ip_isp">网络提供商</string>
     <string name="tool_ip_query_failed">查询失败，请检查网络连接。</string>
+
+    <string name="tool_converter_choose_base">选择进制</string>
+    <string name="tool_converter_from_base">源进制</string>
+    <string name="tool_converter_to_base">目标进制</string>
+    <string name="tool_converter_please_enter_text">请输入内容……</string>
+    <string name="tool_converter_illegal_number">非法数字</string>
 </resources>

app/src/main/res/values-zh-rHK/strings.xml

@@ -87,4 +87,10 @@
     <string name="tool_ip_province">省份</string>
     <string name="tool_ip_isp">网络提供商</string>
     <string name="tool_ip_query_failed">查询失败，请检查网络连接。</string>
+
+    <string name="tool_converter_choose_base">选择进制</string>
+    <string name="tool_converter_from_base">源进制</string>
+    <string name="tool_converter_to_base">目标进制</string>
+    <string name="tool_converter_please_enter_text">请输入内容……</string>
+    <string name="tool_converter_illegal_number">非法数字</string>
 </resources>

app/src/main/res/values-zh-rTW/strings.xml

@@ -87,4 +87,10 @@
     <string name="tool_ip_province">省份</string>
     <string name="tool_ip_isp">网络提供商</string>
     <string name="tool_ip_query_failed">查询失败，请检查网络连接。</string>
+
+    <string name="tool_converter_choose_base">选择进制</string>
+    <string name="tool_converter_from_base">源进制</string>
+    <string name="tool_converter_to_base">目标进制</string>
+    <string name="tool_converter_please_enter_text">请输入内容……</string>
+    <string name="tool_converter_illegal_number">非法数字</string>
 </resources>

app/src/main/res/values/dimens.xml

@@ -48,4 +48,11 @@
     <dimen name="tool_ip_layout_padding">10dp</dimen>
     <dimen name="tool_ip_layout_margin">@dimen/common_layout_margin</dimen>
     <dimen name="tool_ip_query_bar_size">48dp</dimen>
+
+    <dimen name="tool_converter_text_size">16sp</dimen>
+    <dimen name="tool_converter_clickable_padding">5dp</dimen>
+    <dimen name="tool_converter_layout_margin">@dimen/common_layout_margin</dimen>
+    <dimen name="tool_converter_edit_text_view_height">200dp</dimen>
+    <dimen name="tool_converter_edit_text_view_padding">15dp</dimen>
+    <dimen name="tool_converter_edit_text_view_padding_plus">30dp</dimen>
 </resources>

app/src/main/res/values/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Oxygen</string>
     <string name="app_full_name">Oxygen Toolbox</string>
     <string name="app_desc">All in One</string>
+    
+    <string name="base_nan" translatable="false">NaN</string>
 
     <string name="navigation_drawer_open">Open navigation drawer</string>
     <string name="navigation_drawer_close">Close navigation drawer</string>
@@ -123,4 +125,14 @@
     <string name="tool_ip_province">Province</string>
     <string name="tool_ip_isp">ISP</string>
     <string name="tool_ip_query_failed">Query failed, please check network connection.</string>
+    
+    <string name="tool_converter_base_2" translatable="false">2 (binary)</string>
+    <string name="tool_converter_base_8" translatable="false">8 (octal)</string>
+    <string name="tool_converter_base_10" translatable="false">10 (decimal)</string>
+    <string name="tool_converter_base_16" translatable="false">16 (hex)</string>
+    <string name="tool_converter_choose_base">Choose base</string>
+    <string name="tool_converter_from_base">From Base</string>
+    <string name="tool_converter_to_base">To Base</string>
+    <string name="tool_converter_please_enter_text">Please enter text…</string>
+    <string name="tool_converter_illegal_number">Illegal Number</string>
 </resources>

app/src/test/java/com/fatapp/oxygentoolbox/MethodTest.java

@@ -0,0 +1,14 @@
+package com.fatapp.oxygentoolbox;
+
+import static org.junit.Assert.assertEquals;
+
+import com.fatapp.oxygentoolbox.util.HexConversionUtils;
+
+import org.junit.Test;
+
+public class MethodTest {
+    @Test
+    public void decimalToBaseTest() {
+        assertEquals(HexConversionUtils.decimalToBase("2.2", 2), "10.00110011001100110011001100110011001100110011001100");
+    }
+}

app/src/test/java/com/fatapp/oxygentoolbox/TempTest.java

@@ -1,14 +1,21 @@
 package com.fatapp.oxygentoolbox;
 
+import static org.junit.Assert.assertEquals;
+
 import org.junit.Test;
 
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 
-public class Tester {
+public class TempTest {
     @Test
     public void urlEncodeTest() throws UnsupportedEncodingException {
         System.out.println(URLEncoder.encode(" ", StandardCharsets.UTF_8.toString()));
     }
+
+    @Test
+    public void hexTest() {
+        assertEquals(Integer.parseInt("a", 36), 10);
+    }
 }

build.gradle

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '7.3.0' apply false
+    id 'com.android.application' version '7.3.1' apply false
-    id 'com.android.library' version '7.3.0' apply false
+    id 'com.android.library' version '7.3.1' apply false
     id 'com.mikepenz.aboutlibraries.plugin' version '10.3.1' apply false
 }