Решение ДЗ: Activity #3 — permissions и Activity Result API

app/build.gradle

@@ -59,5 +59,7 @@ dependencies {
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     implementation 'androidx.activity:activity-ktx:1.9.0'
     implementation 'androidx.fragment:fragment-ktx:1.7.1'
-    implementation 'com.squareup.picasso:picasso:2.71828'
-}
+    androidTestImplementation 'androidx.test.ext:junit:1.2.1'
+    androidTestImplementation 'androidx.test:runner:1.6.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'
+}

app/src/androidTest/java/otus/gpb/homework/activities/ProfileEditingTest.kt

@@ -0,0 +1,61 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import androidx.test.core.app.ActivityScenario
+import androidx.test.core.app.ApplicationProvider
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.pressBack
+import androidx.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.closeSoftKeyboard
+import androidx.test.espresso.action.ViewActions.replaceText
+import androidx.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.espresso.matcher.ViewMatchers.withText
+import org.junit.Test
+
+class ProfileEditingTest {
+    @Test
+    fun editingPrefillsCurrentProfileAndCancelDoesNotApplyChanges() {
+        ActivityScenario.launch(EditProfileActivity::class.java).use {
+            onView(withId(R.id.buttonEditProfile)).perform(click())
+            onView(withId(R.id.nameEditText)).perform(replaceText("Иван"))
+            onView(withId(R.id.surnameEditText)).perform(replaceText("Петров"))
+            onView(withId(R.id.ageEditText)).perform(replaceText("30"), closeSoftKeyboard())
+            onView(withId(R.id.applyButton)).perform(click())
+
+            onView(withId(R.id.buttonEditProfile)).perform(click())
+            onView(withId(R.id.nameEditText)).check(matches(withText("Иван")))
+            onView(withId(R.id.surnameEditText)).check(matches(withText("Петров")))
+            onView(withId(R.id.ageEditText)).check(matches(withText("30")))
+            onView(withId(R.id.nameEditText)).perform(replaceText("Пётр"), closeSoftKeyboard())
+            onView(withId(R.id.applyButton)).perform(click())
+            onView(withId(R.id.textview_name)).check(matches(withText("Пётр")))
+            onView(withId(R.id.textview_surname)).check(matches(withText("Петров")))
+            onView(withId(R.id.textview_age)).check(matches(withText("30")))
+
+            onView(withId(R.id.buttonEditProfile)).perform(click())
+            onView(withId(R.id.nameEditText)).check(matches(withText("Пётр")))
+            onView(withId(R.id.ageEditText)).perform(replaceText("99"), closeSoftKeyboard())
+            pressBack()
+            onView(withId(R.id.textview_age)).check(matches(withText("30")))
+        }
+    }
+
+    @Test
+    fun formRecreationKeepsDraftInsteadOfResettingToInitialProfile() {
+        val intent = Intent(ApplicationProvider.getApplicationContext(), FillFormActivity::class.java).apply {
+            putExtra(ProfileExtras.NAME, "Иван")
+            putExtra(ProfileExtras.SURNAME, "Петров")
+            putExtra(ProfileExtras.AGE, "30")
+        }
+        ActivityScenario.launch<FillFormActivity>(intent).use { scenario ->
+            onView(withId(R.id.nameEditText)).perform(replaceText("Анна"))
+            onView(withId(R.id.surnameEditText)).perform(replaceText("Сидорова"))
+            onView(withId(R.id.ageEditText)).perform(replaceText("31"), closeSoftKeyboard())
+            scenario.recreate()
+            onView(withId(R.id.nameEditText)).check(matches(withText("Анна")))
+            onView(withId(R.id.surnameEditText)).check(matches(withText("Сидорова")))
+            onView(withId(R.id.ageEditText)).check(matches(withText("31")))
+        }
+    }
+}

app/src/main/AndroidManifest.xml

@@ -2,6 +2,12 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-feature android:name="android.hardware.camera" android:required="false" />
+    <queries>
+        <package android:name="org.telegram.messenger" />
+    </queries>
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -13,6 +19,10 @@
         android:theme="@style/Theme.Activities"
         tools:targetApi="31">
 
+        <activity
+            android:name=".FillFormActivity"
+            android:exported="false" />
+
         <activity
             android:name=".EditProfileActivity"
             android:exported="true">
@@ -24,4 +34,4 @@
         </activity>
     </application>
 
-</manifest>
+</manifest>

app/src/main/java/otus/gpb/homework/activities/EditProfileActivity.kt

@@ -1,22 +1,71 @@
 package otus.gpb.homework.activities
 
-import android.graphics.BitmapFactory
+import android.Manifest
+import android.content.Intent
+import android.content.ActivityNotFoundException
+import android.content.ClipData
+import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Bundle
-import android.widget.ImageView
+import android.provider.Settings
+import android.widget.Toast
+import androidx.activity.result.PickVisualMediaRequest
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
-import androidx.appcompat.widget.Toolbar
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import otus.gpb.homework.activities.databinding.ActivityEditProfileBinding
 
 class EditProfileActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityEditProfileBinding
+    private var selectedPhotoUri: Uri? = null
+    private var showingCameraPlaceholder = false
 
-    private lateinit var imageView: ImageView
+    private val cameraPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { granted ->
+        if (granted) {
+            showCameraPlaceholder()
+        } else if (!shouldShowRequestPermissionRationale(Manifest.permission.CAMERA)) {
+            showSettingsDialog()
+        }
+    }
+
+    private val photoPickerLauncher = registerForActivityResult(
+        ActivityResultContracts.PickVisualMedia()
+    ) { uri ->
+        uri?.let {
+            selectedPhotoUri = it
+            populateImage(it)
+        }
+    }
+
+    private val editProfileLauncher = registerForActivityResult(
+        ActivityResultContracts.StartActivityForResult()
+    ) { result ->
+        if (result.resultCode == RESULT_OK) {
+            result.data?.let { data ->
+                binding.textviewName.text = data.getStringExtra(ProfileExtras.NAME).orEmpty()
+                binding.textviewSurname.text = data.getStringExtra(ProfileExtras.SURNAME).orEmpty()
+                binding.textviewAge.text = data.getStringExtra(ProfileExtras.AGE).orEmpty()
+            }
+        }
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_edit_profile)
-        imageView = findViewById(R.id.imageview_photo)
+        binding = ActivityEditProfileBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+        selectedPhotoUri = savedInstanceState?.getString(STATE_PHOTO)?.let(Uri::parse)
+        showingCameraPlaceholder = savedInstanceState?.getBoolean(STATE_CAMERA) ?: false
+        selectedPhotoUri?.let(::populateImage)
+        if (showingCameraPlaceholder) binding.imageviewPhoto.setImageResource(R.drawable.cat)
+        if (savedInstanceState != null) {
+            binding.textviewName.text = savedInstanceState.getString(ProfileExtras.NAME).orEmpty()
+            binding.textviewSurname.text = savedInstanceState.getString(ProfileExtras.SURNAME).orEmpty()
+            binding.textviewAge.text = savedInstanceState.getString(ProfileExtras.AGE).orEmpty()
+        }
 
-        findViewById<Toolbar>(R.id.toolbar).apply {
+        binding.toolbar.apply {
             inflateMenu(R.menu.menu)
             setOnMenuItemClickListener {
                 when (it.itemId) {
@@ -28,17 +77,124 @@ class EditProfileActivity : AppCompatActivity() {
                 }
             }
         }
+        binding.imageviewPhoto.setOnClickListener { showPhotoActionDialog() }
+        binding.buttonEditProfile.setOnClickListener {
+            val intent = Intent(this, FillFormActivity::class.java).apply {
+                putExtra(ProfileExtras.NAME, binding.textviewName.text.toString())
+                putExtra(ProfileExtras.SURNAME, binding.textviewSurname.text.toString())
+                putExtra(ProfileExtras.AGE, binding.textviewAge.text.toString())
+            }
+            editProfileLauncher.launch(intent)
+        }
     }
 
-    /**
-     * Используйте этот метод чтобы отобразить картинку полученную из медиатеки в ImageView
-     */
     private fun populateImage(uri: Uri) {
-        val bitmap = BitmapFactory.decodeStream(contentResolver.openInputStream(uri))
-        imageView.setImageBitmap(bitmap)
+        showingCameraPlaceholder = false
+        binding.imageviewPhoto.setImageURI(uri)
+    }
+
+    private fun showCameraPlaceholder() {
+        showingCameraPlaceholder = true
+        selectedPhotoUri = null
+        binding.imageviewPhoto.setImageResource(R.drawable.cat)
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putString(STATE_PHOTO, selectedPhotoUri?.toString())
+        outState.putBoolean(STATE_CAMERA, showingCameraPlaceholder)
+        outState.putString(ProfileExtras.NAME, binding.textviewName.text.toString())
+        outState.putString(ProfileExtras.SURNAME, binding.textviewSurname.text.toString())
+        outState.putString(ProfileExtras.AGE, binding.textviewAge.text.toString())
     }
 
     private fun openSenderApp() {
-        TODO("В качестве реализации метода отправьте неявный Intent чтобы поделиться профилем. В качестве extras передайте заполненные строки и картинку")
+        if (selectedPhotoUri == null) {
+            Toast.makeText(this, R.string.choose_photo_before_sending, Toast.LENGTH_LONG).show()
+            return
+        }
+        val profileDescription = listOf(
+            binding.textviewName.text,
+            binding.textviewSurname.text,
+            binding.textviewAge.text
+        ).joinToString(separator = " ")
+        val intent = Intent(Intent.ACTION_SEND).apply {
+            type = "image/*"
+            setPackage(TELEGRAM_PACKAGE)
+            putExtra(Intent.EXTRA_TEXT, profileDescription)
+            putExtra(ProfileExtras.NAME, binding.textviewName.text.toString())
+            putExtra(ProfileExtras.SURNAME, binding.textviewSurname.text.toString())
+            putExtra(ProfileExtras.AGE, binding.textviewAge.text.toString())
+            selectedPhotoUri?.let { uri ->
+                putExtra(Intent.EXTRA_STREAM, uri)
+                clipData = ClipData.newRawUri("Profile photo", uri)
+                addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+            }
+        }
+        val target = intent.resolveActivity(packageManager)
+        if (target == null) {
+            Toast.makeText(this, R.string.telegram_unavailable, Toast.LENGTH_LONG).show()
+            return
+        }
+        intent.component = target
+        try {
+            startActivity(intent)
+        } catch (_: ActivityNotFoundException) {
+            Toast.makeText(this, R.string.telegram_unavailable, Toast.LENGTH_LONG).show()
+        }
+    }
+
+    private fun showPhotoActionDialog() {
+        MaterialAlertDialogBuilder(this)
+            .setItems(arrayOf(getString(R.string.take_photo), getString(R.string.select_photo))) { _, index ->
+                when (index) {
+                    TAKE_PHOTO_INDEX -> requestCameraPermission()
+                    SELECT_PHOTO_INDEX -> photoPickerLauncher.launch(
+                        PickVisualMediaRequest(ActivityResultContracts.PickVisualMedia.ImageOnly)
+                    )
+                }
+            }
+            .show()
+    }
+
+    private fun requestCameraPermission() {
+        when {
+            checkSelfPermission(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED -> {
+                showCameraPlaceholder()
+            }
+            shouldShowRequestPermissionRationale(Manifest.permission.CAMERA) -> showRationaleDialog()
+            else -> cameraPermissionLauncher.launch(Manifest.permission.CAMERA)
+        }
+    }
+
+    private fun showRationaleDialog() {
+        MaterialAlertDialogBuilder(this)
+            .setMessage(R.string.camera_rationale)
+            .setPositiveButton(R.string.grant_access) { _, _ ->
+                cameraPermissionLauncher.launch(Manifest.permission.CAMERA)
+            }
+            .setNegativeButton(R.string.cancel, null)
+            .show()
+    }
+
+    private fun showSettingsDialog() {
+        MaterialAlertDialogBuilder(this)
+            .setMessage(R.string.camera_settings_message)
+            .setPositiveButton(R.string.open_settings) { _, _ ->
+                val intent = Intent(
+                    Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
+                    Uri.fromParts("package", packageName, null)
+                )
+                startActivity(intent)
+            }
+            .show()
+    }
+
+    private companion object {
+        const val STATE_PHOTO = "selected_photo"
+        const val STATE_CAMERA = "camera_placeholder"
+        const val TAKE_PHOTO_INDEX = 0
+        const val SELECT_PHOTO_INDEX = 1
+        const val TELEGRAM_PACKAGE = "org.telegram.messenger"
     }
-}
+}

app/src/main/java/otus/gpb/homework/activities/FillFormActivity.kt

@@ -0,0 +1,33 @@
+package otus.gpb.homework.activities
+
+import android.app.Activity
+import android.content.Intent
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import otus.gpb.homework.activities.databinding.ActivityFillFormBinding
+
+class FillFormActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityFillFormBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityFillFormBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        if (savedInstanceState == null) {
+            binding.nameEditText.setText(intent.getStringExtra(ProfileExtras.NAME).orEmpty())
+            binding.surnameEditText.setText(intent.getStringExtra(ProfileExtras.SURNAME).orEmpty())
+            binding.ageEditText.setText(intent.getStringExtra(ProfileExtras.AGE).orEmpty())
+        }
+
+        binding.applyButton.setOnClickListener {
+            val result = Intent().apply {
+                putExtra(ProfileExtras.NAME, binding.nameEditText.text.toString())
+                putExtra(ProfileExtras.SURNAME, binding.surnameEditText.text.toString())
+                putExtra(ProfileExtras.AGE, binding.ageEditText.text.toString())
+            }
+            setResult(Activity.RESULT_OK, result)
+            finish()
+        }
+    }
+}

app/src/main/java/otus/gpb/homework/activities/ProfileExtras.kt

@@ -0,0 +1,7 @@
+package otus.gpb.homework.activities
+
+object ProfileExtras {
+    const val NAME = "name"
+    const val SURNAME = "surname"
+    const val AGE = "age"
+}

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

@@ -36,7 +36,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="12dp"
         android:hint="Имя"
-        android:textSize="18dp"
+        android:textSize="18sp"
         app:layout_constraintStart_toEndOf="@+id/imageview_photo"
         app:layout_constraintTop_toTopOf="@+id/imageview_photo" />
 
@@ -46,7 +46,7 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="4dp"
         android:hint="Фамилия"
-        android:textSize="18dp"
+        android:textSize="18sp"
         app:layout_constraintStart_toStartOf="@+id/textview_name"
         app:layout_constraintTop_toBottomOf="@+id/textview_name" />
 
@@ -56,18 +56,18 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="4dp"
         android:hint="Возраст"
-        android:textSize="18dp"
+        android:textSize="18sp"
         app:layout_constraintStart_toStartOf="@+id/textview_surname"
         app:layout_constraintTop_toBottomOf="@+id/textview_surname" />
 
     <Button
-        android:id="@+id/button4"
+        android:id="@+id/buttonEditProfile"
         style="@style/Widget.MaterialComponents.Button.TextButton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginTop="16dp"
-        android:text="Редактировать профиль"
+        android:text="@string/edit_profile"
         app:layout_constraintStart_toStartOf="@+id/textview_age"
         app:layout_constraintTop_toBottomOf="@+id/textview_age" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>