Add screen for PhotoTaskFragment

This uses UriImage compose component for loading images asynchronously

Author: shobhitagarwal1612

app/src/main/java/org/groundplatform/android/ui/datacollection/tasks/photo/PhotoTaskScreen.kt

@@ -0,0 +1,91 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * 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 org.groundplatform.android.ui.datacollection.tasks.photo
+
+import android.net.Uri
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.FilledTonalButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.res.vectorResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.core.net.toUri
+import org.groundplatform.android.R
+import org.groundplatform.android.ui.common.ExcludeFromJacocoGeneratedReport
+import org.groundplatform.android.ui.datacollection.components.UriImage
+import org.groundplatform.android.ui.theme.AppTheme
+
+@Composable
+fun PhotoTaskScreen(
+  isPhotoPresent: Boolean,
+  uri: Uri?,
+  onTakePhoto: () -> Unit,
+  modifier: Modifier = Modifier,
+) {
+  Box(modifier = modifier.fillMaxWidth().padding(horizontal = 8.dp)) {
+    if (!isPhotoPresent) {
+      CaptureButton(onTakePhoto)
+    } else {
+      UriImage(uri = uri, modifier = Modifier.fillMaxWidth().padding(top = 4.dp))
+    }
+  }
+}
+
+@Composable
+private fun CaptureButton(onTakePhoto: () -> Unit) {
+  FilledTonalButton(
+    onClick = onTakePhoto,
+    contentPadding = ButtonDefaults.ButtonWithIconContentPadding,
+  ) {
+    Icon(
+      imageVector = ImageVector.vectorResource(id = R.drawable.outline_photo_camera),
+      contentDescription = stringResource(id = R.string.camera),
+      modifier = Modifier.size(ButtonDefaults.IconSize),
+    )
+    Spacer(Modifier.size(ButtonDefaults.IconSpacing))
+    Text(text = stringResource(id = R.string.camera))
+  }
+}
+
+@Preview(showBackground = true)
+@Composable
+@ExcludeFromJacocoGeneratedReport
+private fun PhotoTaskScreenPreviewEmpty() {
+  AppTheme { PhotoTaskScreen(isPhotoPresent = false, uri = null, onTakePhoto = {}) }
+}
+
+@Preview(showBackground = true)
+@Composable
+@ExcludeFromJacocoGeneratedReport
+private fun PhotoTaskScreenPreviewWithPhoto() {
+  AppTheme {
+    PhotoTaskScreen(
+      isPhotoPresent = true,
+      uri = "content://media/external/images/media/1".toUri(),
+      onTakePhoto = {},
+    )
+  }
+}

app/src/test/java/org/groundplatform/android/ui/datacollection/tasks/photo/PhotoTaskScreenTest.kt

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * 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 org.groundplatform.android.ui.datacollection.tasks.photo
+
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.onNodeWithContentDescription
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.core.net.toUri
+import com.google.common.truth.Truth.assertThat
+import dagger.hilt.android.testing.HiltAndroidTest
+import org.groundplatform.android.BaseHiltTest
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+@HiltAndroidTest
+@RunWith(RobolectricTestRunner::class)
+@Config(qualifiers = "w600dp-h1024dp")
+class PhotoTaskScreenTest : BaseHiltTest() {
+
+  @Test
+  fun `shows capture button when photo is not present`() {
+    composeTestRule.setContent {
+      PhotoTaskScreen(isPhotoPresent = false, uri = null, onTakePhoto = {})
+    }
+
+    composeTestRule.onNodeWithText("Camera").assertIsDisplayed()
+  }
+
+  @Test
+  fun `shows photo preview when photo is present`() {
+    composeTestRule.setContent {
+      PhotoTaskScreen(
+        isPhotoPresent = true,
+        uri = "content://media/external/images/media/1".toUri(),
+        onTakePhoto = {},
+      )
+    }
+
+    composeTestRule.onNodeWithContentDescription("Preview").assertIsDisplayed()
+  }
+
+  @Test
+  fun `invokes onTakePhoto callback when capture button is clicked`() {
+    var onTakePhotoCalled = false
+
+    composeTestRule.setContent {
+      PhotoTaskScreen(
+        isPhotoPresent = false,
+        uri = null,
+        onTakePhoto = { onTakePhotoCalled = true },
+      )
+    }
+
+    composeTestRule.onNodeWithText("Camera").performClick()
+
+    assertThat(onTakePhotoCalled).isTrue()
+  }
+}