Add TSV parser and minimal UI for file selection dialog

app/build.gradle

@@ -54,7 +54,9 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.core:core-ktx:1.2.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'com.github.doyaaaaaken:kotlin-csv-jvm:0.7.3'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    implementation 'com.google.android.material:material:1.1.0'
 }

app/src/androidTest/java/com/illusionware/npsbrowser/ExampleInstrumentedTest.kt

@@ -1,24 +0,0 @@
-package com.hisoft.npsbrowser
-
-import androidx.test.platform.app.InstrumentationRegistry
-import androidx.test.ext.junit.runners.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.getInstrumentation().targetContext
-        assertEquals("com.hisoft.npsbrowser", appContext.packageName)
-    }
-}

app/src/main/AndroidManifest.xml

@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.illusionware.npsbrowser">
-
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <application
         android:allowBackup="true"
         android:icon="@mipmap/nps_icon"
@@ -9,7 +11,7 @@
         android:roundIcon="@mipmap/nps_icon_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        <activity android:name=".activities.MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/illusionware/npsbrowser/MainActivity.kt

@@ -1,12 +0,0 @@
-package com.illusionware.npsbrowser
-
-import androidx.appcompat.app.AppCompatActivity
-import android.os.Bundle
-
-class MainActivity : AppCompatActivity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-    }
-}

app/src/main/java/com/illusionware/npsbrowser/activities/MainActivity.kt

@@ -0,0 +1,58 @@
+package com.illusionware.npsbrowser.activities
+
+import android.Manifest
+import android.app.Activity
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.os.Bundle
+import android.util.Log
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.app.ActivityCompat
+import com.github.doyaaaaaken.kotlincsv.dsl.csvReader
+import com.illusionware.npsbrowser.databinding.ActivityMainBinding
+import java.io.InputStream
+
+class MainActivity : AppCompatActivity() {
+
+    private val tsvReader = csvReader {
+        charset = "UTF-8"
+        quoteChar = '"'
+        delimiter = '\t'
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val binding = ActivityMainBinding.inflate(layoutInflater);
+        setContentView(binding.root)
+
+        binding.tsvChooserButton.setOnClickListener {
+            if (!isStoragePermissionGranted())
+                return@setOnClickListener
+            val intent = Intent(Intent.ACTION_GET_CONTENT).apply {
+                addCategory(Intent.CATEGORY_OPENABLE)
+                type = "text/tab-separated-values"
+            }
+            startActivityForResult(intent, 1)
+        }
+    }
+    override fun onActivityResult(requestCode: Int, resultCode: Int, resultData: Intent?) {
+        super.onActivityResult(requestCode, resultCode, resultData)
+        if (requestCode == 1 && resultCode == Activity.RESULT_OK) {
+            resultData?.data?.also { uri ->
+                val inputStream: InputStream? = contentResolver.openInputStream(uri)
+                val entries : List<Map<String, String>> = tsvReader.readAllWithHeader(inputStream!!)
+            }
+        }
+    }
+
+    private fun isStoragePermissionGranted(): Boolean {
+        return  if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                Log.v("perms", "Permission is granted")
+                true
+            } else {
+                Log.v("perms", "Permission is revoked")
+                ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE), 1)
+                false
+            }
+    }
+}

app/src/main/res/drawable/ic_add_yellow_24dp.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFCA00"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
+</vector>

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

@@ -4,15 +4,21 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    tools:context=".activities.MainActivity">
 
-    <TextView
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
-        android:layout_width="wrap_content"
+        android:id="@+id/tsvChooserButton"
-        android:layout_height="wrap_content"
+        android:layout_width="52dp"
-        android:text="LETS GOOOOOOOOOOOOOOOOOOO"
+        android:layout_height="52dp"
+        android:layout_marginStart="176dp"
+        android:layout_marginEnd="176dp"
+        android:layout_marginBottom="50dp"
+        android:clickable="true"
+        android:focusable="true"
+        android:src="@drawable/ic_add_yellow_24dp"
+        app:fabCustomSize="52dp"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:maxImageSize="32dp" />
-
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/test/java/com/illusionware/npsbrowser/ExampleUnitTest.kt

@@ -1,17 +0,0 @@
-package com.hisoft.npsbrowser
-
-import org.junit.Test
-
-import org.junit.Assert.*
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-class ExampleUnitTest {
-    @Test
-    fun addition_isCorrect() {
-        assertEquals(4, 2 + 2)
-    }
-}