Working tabs with a chronometer below

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 29
+    buildToolsVersion "29.0.1"
+    defaultConfig {
+        applicationId "com.example.rehabapp"
+        minSdkVersion 19
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+repositories {
+    maven { url 'https://jitpack.io' }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.core:core-ktx:1.0.2'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/example/rehabapp/ExampleInstrumentedTest.kt

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+package com.example.rehabapp
+
+import androidx.test.InstrumentationRegistry
+import androidx.test.runner.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getTargetContext()
+        assertEquals("com.example.rehabapp", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.example.rehabapp">
+
+
+
+    <application
+            android:allowBackup="true"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_round"
+            android:supportsRtl="true"
+            android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/example/rehabapp/AccFragment.kt

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+package com.example.rehabapp
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+
+
+class AccFragment : Fragment() {
+
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View = inflater.inflate(R.layout.acc_layout, container, false)
+
+}

app/src/main/java/com/example/rehabapp/ComFragment.kt

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+package com.example.rehabapp
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import androidx.fragment.app.Fragment
+import android.widget.Toast
+import android.graphics.Bitmap
+import java.text.SimpleDateFormat
+import java.util.*
+
+
+class ComFragment : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val view : View=inflater.inflate(R.layout.com_layout, container, false)
+
+        val startButton:Button=view.findViewById(R.id.startButton)
+        val stopButton:Button=view.findViewById(R.id.stopButton)
+
+        startButton.setOnClickListener(View.OnClickListener {
+            (activity as MainActivity).startChronometer()
+        })
+
+        stopButton.setOnClickListener(View.OnClickListener {
+            (activity as MainActivity).stopChronometer()
+        })
+
+        return view
+    }
+}

app/src/main/java/com/example/rehabapp/EmgFragment.kt

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+package com.example.rehabapp
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import com.github.mikephil.charting.charts.LineChart
+import com.github.mikephil.charting.data.Entry
+import com.github.mikephil.charting.data.LineData
+import com.github.mikephil.charting.data.LineDataSet
+
+
+class EmgFragment : Fragment() {
+
+    lateinit var chart: LineChart
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val view: View = inflater.inflate(R.layout.emg_layout, container, false)
+
+        chart=view.findViewById(R.id.emgChart)
+        val entries = ArrayList<Entry>()
+        entries.add(Entry(1.0F, 2.0F))
+        entries.add(Entry(2.0F, 8.0F))
+        entries.add(Entry(3.0F, 13.0F))
+        entries.add(Entry(4.0F, 15.0F))
+        entries.add(Entry(5.0F, 7.0F))
+        entries.add(Entry(6.0F, 3.0F))
+
+        val dataSet=LineDataSet(entries, "Random")
+
+        val lineData= LineData(dataSet)
+        chart.data = lineData
+        chart.invalidate()
+
+
+        return view
+    }
+}

app/src/main/java/com/example/rehabapp/HistFragment.kt

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+package com.example.rehabapp
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+
+
+class HistFragment : Fragment() {
+
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View = inflater.inflate(R.layout.hist_layout, container, false)
+
+}

app/src/main/java/com/example/rehabapp/LogFragment.kt

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+package com.example.rehabapp
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+
+
+class LogFragment : Fragment() {
+
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View = inflater.inflate(R.layout.log_layout, container, false)
+
+}