[image_picker] Fix crash due to SecurityException (flutter#4004)

Issue flutter/flutter#100025 mentions crashing of the image picker plugin due to a `SecurityException`. As research into the issue did not yield reproduction steps, we decided to surround the breaking method call with a `try/catch` block for now (see discussion in the issue). This PR implements just that. Instead of crashing on a `SecurityException`, the plugin will now return an image path of `null`.

This PR fixes flutter/flutter#100025.

packages/image_picker/image_picker_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.8.6+16
+
+* Fixes crashes caused by `SecurityException` when calling `getPathFromUri()`.
+
 ## 0.8.6+15
 
 * Bumps androidx.activity:activity from 1.6.1 to 1.7.0.

packages/image_picker/image_picker_android/android/src/main/java/io/flutter/plugins/imagepicker/FileUtils.java

@@ -79,6 +79,13 @@ String getPathFromUri(final Context context, final Uri uri) {
       // target file was written in full. Flushing the stream merely moves
       // the bytes into the OS, not necessarily to the file.
       return null;
+    } catch (SecurityException e) {
+      // Calling `ContentResolver#openInputStream()` has been reported to throw a
+      // `SecurityException` on some devices in certain circumstances. Instead of crashing, we
+      // return `null`.
+      //
+      // See https://github.com/flutter/flutter/issues/100025 for more details.
+      return null;
     }
   }
 

packages/image_picker/image_picker_android/android/src/test/java/io/flutter/plugins/imagepicker/FileUtilTest.java

@@ -5,10 +5,16 @@
 package io.flutter.plugins.imagepicker;
 
 import static java.nio.charset.StandardCharsets.UTF_8;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
 import static org.robolectric.Shadows.shadowOf;
 
 import android.content.ContentProvider;
+import android.content.ContentResolver;
 import android.content.ContentValues;
 import android.content.Context;
 import android.database.Cursor;
@@ -66,7 +72,22 @@ public void FileUtil_GetPathFromUri() throws IOException {
 
     assertTrue(bytes.length > 0);
     String imageStream = new String(bytes, UTF_8);
-    assertTrue(imageStream.equals("imageStream"));
+    assertEquals("imageStream", imageStream);
+  }
+
+  @Test
+  public void FileUtil_GetPathFromUri_securityException() throws IOException {
+    Uri uri = Uri.parse("content://dummy/dummy.png");
+
+    ContentResolver mockContentResolver = mock(ContentResolver.class);
+    when(mockContentResolver.openInputStream(any(Uri.class))).thenThrow(SecurityException.class);
+
+    Context mockContext = mock(Context.class);
+    when(mockContext.getContentResolver()).thenReturn(mockContentResolver);
+
+    String path = fileUtils.getPathFromUri(mockContext, uri);
+
+    assertNull(path);
   }
 
   @Test

packages/image_picker/image_picker_android/pubspec.yaml

@@ -3,7 +3,7 @@ description: Android implementation of the image_picker plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/image_picker/image_picker_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+image_picker%22
 
-version: 0.8.6+15
+version: 0.8.6+16
 
 environment:
   sdk: ">=2.18.0 <4.0.0"