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SurveyFragment.kt
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SurveyFragment.kt
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/*
* 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.Intent
import android.net.Uri
import android.os.Bundle
import android.provider.Settings
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
import androidx.fragment.app.viewModels
import com.example.compose.jetsurvey.R
import com.example.compose.jetsurvey.theme.JetsurveyTheme
import com.google.android.material.datepicker.MaterialDatePicker
class SurveyFragment : Fragment() {
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,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
return ComposeView(requireContext()).apply {
// In order for savedState to work, the same ID needs to be used for all instances.
id = R.id.sign_in_fragment
layoutParams = ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT
)
setContent {
JetsurveyTheme {
viewModel.uiState.observeAsState().value?.let { surveyState ->
when (surveyState) {
is SurveyState.Questions -> SurveyQuestionsScreen(
questions = surveyState,
shouldAskPermissions = viewModel.askForPermissions,
onAction = { id, action -> handleSurveyAction(id, action) },
onDoNotAskForPermissions = { viewModel.doNotAskForPermissions() },
onDonePressed = { viewModel.computeResult(surveyState) },
onBackPressed = {
activity?.onBackPressedDispatcher?.onBackPressed()
},
openSettings = {
activity?.startActivity(
Intent(
Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
Uri.fromParts("package", context.packageName, null)
)
)
}
)
is SurveyState.Result -> SurveyResultScreen(
result = surveyState,
onDonePressed = {
activity?.onBackPressedDispatcher?.onBackPressed()
}
)
}
}
}
}
}
}
private fun handleSurveyAction(questionId: Int, actionType: SurveyActionType) {
when (actionType) {
SurveyActionType.PICK_DATE -> showDatePicker(questionId)
SurveyActionType.TAKE_PHOTO -> takeAPhoto()
SurveyActionType.SELECT_CONTACT -> selectContact(questionId)
}
}
private fun showDatePicker(questionId: Int) {
val date = viewModel.getCurrentDate(questionId = questionId)
val picker = MaterialDatePicker.Builder.datePicker()
.setSelection(date)
.build()
activity?.let {
picker.show(it.supportFragmentManager, picker.toString())
picker.addOnPositiveButtonClickListener {
viewModel.onDatePicked(questionId, picker.headerText)
}
}
}
private fun takeAPhoto() {
takePicture.launch(viewModel.getUriToSaveImage())
}
@Suppress("UNUSED_PARAMETER")
private fun selectContact(questionId: Int) {
// TODO: unsupported for now
}
}