android
diff --git a/Jetsurvey/app/build.gradle b/Jetsurvey/app/build.gradle
@@ -102,6 +102,8 @@ dependencies {
     implementation Libs.AndroidX.Compose.runtime
     implementation Libs.AndroidX.Compose.runtimeLivedata
 
+    implementation Libs.Accompanist.coil
+
     androidTestImplementation Libs.junit
     androidTestImplementation Libs.AndroidX.Test.core
     androidTestImplementation Libs.AndroidX.Test.espressoCore

diff --git a/Jetsurvey/app/src/main/AndroidManifest.xml b/Jetsurvey/app/src/main/AndroidManifest.xml
@@ -17,6 +17,9 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.compose.jetsurvey">
 
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="28" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"

diff --git a/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/PhotoUriManager.kt b/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/PhotoUriManager.kt
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.compose.jetsurvey.survey
+
+import android.content.ContentValues
+import android.content.Context
+import android.provider.MediaStore
+
+/**
+ * Manages the creation of photo Uris. The Uri is used to store the photos taken with camera.
+ */
+class PhotoUriManager(private val appContext: Context) {
+
+    private val photoCollection by lazy {
+        MediaStore.Images.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY)
+    }
+
+    private val resolver by lazy { appContext.contentResolver }
+
+    fun buildNewUri() = resolver.insert(photoCollection, buildPhotoDetails())
+
+    private fun buildPhotoDetails() = ContentValues().apply {
+        put(MediaStore.Images.Media.DISPLAY_NAME, generateFilename())
+        put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg")
+    }
+
+    /**
+     * Create a unique file name based on the time the photo is taken
+     */
+    private fun generateFilename() = "selfie-${System.currentTimeMillis()}.jpg"
+}
diff --git a/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/Survey.kt b/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/Survey.kt
@@ -16,7 +16,7 @@
 
 package com.example.compose.jetsurvey.survey
 
-import android.graphics.Bitmap
+import android.net.Uri
 import androidx.annotation.StringRes
 
 data class SurveyResult(
@@ -44,7 +44,7 @@ enum class SurveyActionType { PICK_DATE, TAKE_PHOTO, SELECT_CONTACT }
 
 sealed class SurveyActionResult {
     data class Date(val date: String) : SurveyActionResult()
-    data class Photo(val bitmap: Bitmap) : SurveyActionResult()
+    data class Photo(val uri: Uri) : SurveyActionResult()
     data class Contact(val contact: String) : SurveyActionResult()
 }
 

diff --git a/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/SurveyFragment.kt b/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/SurveyFragment.kt
@@ -20,6 +20,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.activity.result.contract.ActivityResultContracts.TakePicture
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.platform.ComposeView
 import androidx.fragment.app.Fragment
@@ -30,7 +31,15 @@ import com.google.android.material.datepicker.MaterialDatePicker
 
 class SurveyFragment : Fragment() {
 
-    private val viewModel: SurveyViewModel by viewModels { SurveyViewModelFactory() }
+    private val viewModel: SurveyViewModel by viewModels {
+        SurveyViewModelFactory(PhotoUriManager(requireContext().applicationContext))
+    }
+
+    private val takePicture = registerForActivityResult(TakePicture()) { photoSaved ->
+        if (photoSaved) {
+            viewModel.onImageSaved()
+        }
+    }
 
     override fun onCreateView(
         inflater: LayoutInflater,
@@ -71,7 +80,7 @@ class SurveyFragment : Fragment() {
     private fun handleSurveyAction(questionId: Int, actionType: SurveyActionType) {
         when (actionType) {
             SurveyActionType.PICK_DATE -> showDatePicker(questionId)
-            SurveyActionType.TAKE_PHOTO -> takeAPhoto(questionId)
+            SurveyActionType.TAKE_PHOTO -> takeAPhoto()
             SurveyActionType.SELECT_CONTACT -> selectContact(questionId)
         }
     }
@@ -86,9 +95,8 @@ class SurveyFragment : Fragment() {
         }
     }
 
-    @Suppress("UNUSED_PARAMETER")
-    private fun takeAPhoto(questionId: Int) {
-        // TODO: unsupported for now
+    private fun takeAPhoto() {
+        takePicture.launch(viewModel.getUriToSaveImage())
     }
 
     @Suppress("UNUSED_PARAMETER")

diff --git a/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/SurveyQuestions.kt b/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/SurveyQuestions.kt
@@ -16,7 +16,9 @@
 
 package com.example.compose.jetsurvey.survey
 
+import androidx.annotation.StringRes
 import androidx.compose.foundation.BorderStroke
+import androidx.compose.foundation.Image
 import androidx.compose.foundation.ScrollableColumn
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
@@ -25,21 +27,29 @@ import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.preferredHeight
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.layout.wrapContentSize
 import androidx.compose.foundation.selection.selectable
 import androidx.compose.material.AmbientContentAlpha
 import androidx.compose.material.Button
 import androidx.compose.material.Checkbox
 import androidx.compose.material.CheckboxConstants
 import androidx.compose.material.ContentAlpha
+import androidx.compose.material.Icon
 import androidx.compose.material.MaterialTheme
+import androidx.compose.material.OutlinedButton
 import androidx.compose.material.RadioButton
 import androidx.compose.material.RadioButtonConstants
 import androidx.compose.material.Slider
 import androidx.compose.material.Surface
 import androidx.compose.material.Text
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.AddAPhoto
+import androidx.compose.material.icons.filled.SwapHoriz
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.Providers
 import androidx.compose.runtime.getValue
@@ -49,10 +59,12 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.res.vectorResource
 import androidx.compose.ui.unit.dp
 import androidx.ui.tooling.preview.Preview
 import com.example.compose.jetsurvey.R
 import com.example.compose.jetsurvey.theme.JetsurveyTheme
+import dev.chrisbanes.accompanist.coil.CoilImage
 
 @Composable
 fun Question(
@@ -258,27 +270,118 @@ private fun ActionQuestion(
     onAction: (Int, SurveyActionType) -> Unit,
     modifier: Modifier = Modifier
 ) {
-    Button(
-        onClick = { onAction(questionId, possibleAnswer.actionType) },
-        modifier = modifier.padding(vertical = 20.dp)
-    ) {
-        Text(text = stringResource(id = possibleAnswer.label))
+    when (possibleAnswer.actionType) {
+        SurveyActionType.PICK_DATE -> {
+            DateQuestion(
+                questionId = questionId,
+                answerLabel = possibleAnswer.label,
+                answer = answer,
+                onAction = onAction,
+                modifier = modifier
+            )
+        }
+        SurveyActionType.TAKE_PHOTO -> {
+            PhotoQuestion(
+                questionId = questionId,
+                answer = answer,
+                onAction = onAction,
+                modifier = modifier
+            )
+        }
+        SurveyActionType.SELECT_CONTACT -> TODO()
     }
-    if (answer != null) {
-        when (answer.result) {
-            is SurveyActionResult.Date -> {
+}
+
+@Composable
+private fun PhotoQuestion(
+    questionId: Int,
+    answer: Answer.Action?,
+    onAction: (Int, SurveyActionType) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val resource = if (answer != null) {
+        Icons.Filled.SwapHoriz
+    } else {
+        Icons.Filled.AddAPhoto
+    }
+    OutlinedButton(
+        onClick = { onAction(questionId, SurveyActionType.TAKE_PHOTO) },
+        modifier = modifier,
+        contentPadding = PaddingValues()
+    ) {
+        Column {
+            if (answer != null && answer.result is SurveyActionResult.Photo) {
+                CoilImage(
+                    data = answer.result.uri,
+                    modifier = Modifier.fillMaxSize(),
+                    fadeIn = true
+                )
+            } else {
+                PhotoDefaultImage(modifier = Modifier.padding(horizontal = 86.dp, vertical = 74.dp))
+            }
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .wrapContentSize(Alignment.BottomCenter)
+                    .padding(vertical = 26.dp),
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Icon(resource)
+                Spacer(modifier = Modifier.width(8.dp))
                 Text(
-                    text = stringResource(R.string.selected_date, answer.result.date),
-                    style = MaterialTheme.typography.h4,
-                    modifier = Modifier.padding(vertical = 20.dp)
+                    text = stringResource(
+                        id = if (answer != null) {
+                            R.string.retake_photo
+                        } else {
+                            R.string.add_photo
+                        }
+                    )
                 )
             }
-            is SurveyActionResult.Photo -> TODO()
-            is SurveyActionResult.Contact -> TODO()
         }
     }
 }
 
+@Composable
+private fun DateQuestion(
+    questionId: Int,
+    @StringRes answerLabel: Int,
+    answer: Answer.Action?,
+    onAction: (Int, SurveyActionType) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Button(
+        onClick = { onAction(questionId, SurveyActionType.PICK_DATE) },
+        modifier = modifier.padding(vertical = 20.dp)
+    ) {
+        Text(text = stringResource(id = answerLabel))
+    }
+
+    if (answer != null && answer.result is SurveyActionResult.Date) {
+        Text(
+            text = stringResource(R.string.selected_date, answer.result.date),
+            style = MaterialTheme.typography.h4,
+            modifier = Modifier.padding(vertical = 20.dp)
+        )
+    }
+}
+
+@Composable
+private fun PhotoDefaultImage(
+    lightTheme: Boolean = MaterialTheme.colors.isLight,
+    modifier: Modifier = Modifier
+) {
+    val assetId = if (lightTheme) {
+        R.drawable.ic_selfie_light
+    } else {
+        R.drawable.ic_selfie_dark
+    }
+    Image(
+        asset = vectorResource(id = assetId),
+        modifier = modifier
+    )
+}
+
 @Composable
 private fun SliderQuestion(
     possibleAnswer: PossibleAnswer.Slider,

diff --git a/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/SurveyRepository.kt b/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/SurveyRepository.kt
@@ -16,14 +16,16 @@
 
 package com.example.compose.jetsurvey.survey
 
+import android.os.Build
 import com.example.compose.jetsurvey.R
 import com.example.compose.jetsurvey.survey.PossibleAnswer.Action
 import com.example.compose.jetsurvey.survey.PossibleAnswer.MultipleChoice
 import com.example.compose.jetsurvey.survey.PossibleAnswer.SingleChoice
 import com.example.compose.jetsurvey.survey.SurveyActionType.PICK_DATE
+import com.example.compose.jetsurvey.survey.SurveyActionType.TAKE_PHOTO
 
 // Static data of questions
-private val jetpackQuestions = listOf(
+private val jetpackQuestions = mutableListOf(
     Question(
         id = 1,
         questionText = R.string.in_my_free_time,
@@ -81,7 +83,19 @@ private val jetpackQuestions = listOf(
             endText = R.string.selfie_max
         )
     )
-)
+).apply {
+    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.Q) {
+        // Add the camera feature only for devices 29+
+        add(
+            Question(
+                id = 975,
+                questionText = R.string.selfie_skills,
+                answer = Action(label = R.string.add_photo, actionType = TAKE_PHOTO)
+            )
+        )
+    }
+}.toList()
+
 private val jetpackSurvey = Survey(
     title = R.string.which_jetpack_library,
     questions = jetpackQuestions

diff --git a/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/SurveyScreen.kt b/Jetsurvey/app/src/main/java/com/example/compose/jetsurvey/survey/SurveyScreen.kt
@@ -41,10 +41,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Close
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.Providers
-import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.savedinstancestate.savedInstanceState
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.annotatedString
@@ -61,9 +58,9 @@ fun SurveyQuestionsScreen(
     onDonePressed: () -> Unit,
     onBackPressed: () -> Unit
 ) {
-    var currentQuestionIndex by savedInstanceState { 0 }
-    val questionState =
-        remember(currentQuestionIndex) { questions.questionsState[currentQuestionIndex] }
+    val questionState = remember(questions.currentQuestionIndex) {
+        questions.questionsState[questions.currentQuestionIndex]
+    }
 
     Surface(modifier = Modifier.fillMaxSize()) {
         Scaffold(
@@ -91,8 +88,8 @@ fun SurveyQuestionsScreen(
             bottomBar = {
                 SurveyBottomBar(
                     questionState = questionState,
-                    onPreviousPressed = { currentQuestionIndex-- },
-                    onNextPressed = { currentQuestionIndex++ },
+                    onPreviousPressed = { questions.currentQuestionIndex-- },
+                    onNextPressed = { questions.currentQuestionIndex++ },
                     onDonePressed = onDonePressed
                 )
             }
@@ -157,9 +154,7 @@ private fun TopAppBarTitle(
     val indexStyle = MaterialTheme.typography.caption.toSpanStyle().copy(
         fontWeight = FontWeight.Bold
     )
-    val totalStyle = MaterialTheme.typography.caption.toSpanStyle().copy(
-        fontWeight = FontWeight.SemiBold
-    )
+    val totalStyle = MaterialTheme.typography.caption.toSpanStyle()
     val text = annotatedString {
         withStyle(style = indexStyle) {
             append("${questionIndex + 1}")