Download images

android/app/src/main/AndroidManifest.xml

@@ -70,5 +70,14 @@
                 android:name="com.yalantis.ucrop.UCropActivity"
                 android:screenOrientation="portrait"
                 android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>
+        <provider
+                android:name="vn.hunghd.flutterdownloader.DownloadedFileProvider"
+                android:authorities="${applicationId}.flutter_downloader.provider"
+                android:exported="false"
+                android:grantUriPermissions="true">
+            <meta-data
+                    android:name="android.support.FILE_PROVIDER_PATHS"
+                    android:resource="@xml/provider_paths" />
+        </provider>
     </application>
 </manifest>

android/app/src/main/java/com/example/openbook/MainActivity.java

@@ -25,6 +25,8 @@
 import io.flutter.plugin.common.EventChannel;
 import io.flutter.plugins.GeneratedPluginRegistrant;
 
+import social.openbook.app.plugins.Permissions;
+
 public class MainActivity extends FlutterActivity {
 
   public static final String SHARE_STREAM = "openbook.social/receive_share";
@@ -37,6 +39,7 @@ public class MainActivity extends FlutterActivity {
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     GeneratedPluginRegistrant.registerWith(this);
+    Permissions.registerWith(this.registrarFor("social.openbook.app.plugins.Permissions"));
 
     new EventChannel(getFlutterView(), SHARE_STREAM).setStreamHandler(
       new EventChannel.StreamHandler() {

android/app/src/main/java/com/example/openbook/plugins/Permissions.java

@@ -0,0 +1,80 @@
+package social.openbook.app.plugins;
+
+import android.Manifest;
+import android.content.pm.PackageManager;
+import android.util.SparseArray;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import io.flutter.plugin.common.MethodChannel;
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
+import io.flutter.plugin.common.MethodChannel.Result;
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.plugin.common.PluginRegistry;
+import io.flutter.plugin.common.PluginRegistry.Registrar;
+
+public class Permissions implements MethodCallHandler, PluginRegistry.RequestPermissionsResultListener {
+    private Registrar registrar;
+    private SparseArray<Result> result;
+
+    public static void registerWith(Registrar registrar) {
+        final MethodChannel channel = new MethodChannel(registrar.messenger(), "openbook.social/permissions");
+        Permissions permissions = new Permissions(registrar);
+        channel.setMethodCallHandler(permissions);
+        registrar.addRequestPermissionsResultListener(permissions);
+    }
+
+    private Permissions(Registrar registrar) {
+        this.registrar = registrar;
+        this.result = new SparseArray<>();
+    }
+
+    @Override
+    public void onMethodCall(MethodCall call, Result result) {
+        switch (call.method) {
+            case "checkPermission":
+                result.success(checkPermission(call.argument("permission")));
+                break;
+            case "requestPermission":
+                requestPermission(call.argument("permission"), result);
+                break;
+            default:
+                result.notImplemented();
+                break;
+        }
+    }
+
+    private String getManifestPermission(String permission) {
+        switch (permission) {
+            case "WRITE_EXTERNAL_STORAGE":
+                return Manifest.permission.WRITE_EXTERNAL_STORAGE;
+            default:
+                return permission;
+        }
+    }
+
+    private boolean checkPermission(String permission) {
+        return ContextCompat.checkSelfPermission(registrar.activity(), getManifestPermission(permission)) == PackageManager.PERMISSION_GRANTED;
+    }
+
+    private void requestPermission(String permission, Result result) {
+        permission = getManifestPermission(permission);
+        this.result.put(permission.hashCode(), result);
+        ActivityCompat.requestPermissions(registrar.activity(), new String[] {permission}, permission.hashCode());
+    }
+
+    @Override
+    public boolean onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
+        Result result = this.result.get(requestCode);
+        if (result != null && permissions.length == 1 && permissions[0].hashCode() == requestCode) {
+            boolean value = grantResults[0] == PackageManager.PERMISSION_GRANTED;
+            result.success(value);
+            this.result.delete(requestCode);
+            return value;
+        }
+        return false;
+    }
+}

ios/Podfile.lock

@@ -1,7 +1,11 @@
 PODS:
   - device_info (0.0.1):
     - Flutter
+  - downloads_path_provider (0.0.1):
+    - Flutter
   - Flutter (1.0.0)
+  - flutter_downloader (0.0.1):
+    - Flutter
   - flutter_exif_rotation (0.0.1):
     - Flutter
   - flutter_secure_storage (3.2.0):
@@ -39,7 +43,9 @@ PODS:
 
 DEPENDENCIES:
   - device_info (from `.symlinks/plugins/device_info/ios`)
+  - downloads_path_provider (from `.symlinks/plugins/downloads_path_provider/ios`)
   - Flutter (from `.symlinks/flutter/ios`)
+  - flutter_downloader (from `.symlinks/plugins/flutter_downloader/ios`)
   - flutter_exif_rotation (from `.symlinks/plugins/flutter_exif_rotation/ios`)
   - flutter_secure_storage (from `.symlinks/plugins/flutter_secure_storage/ios`)
   - image_cropper (from `.symlinks/plugins/image_cropper/ios`)
@@ -64,8 +70,12 @@ SPEC REPOS:
 EXTERNAL SOURCES:
   device_info:
     :path: ".symlinks/plugins/device_info/ios"
+  downloads_path_provider:
+    :path: ".symlinks/plugins/downloads_path_provider/ios"
   Flutter:
     :path: ".symlinks/flutter/ios"
+  flutter_downloader:
+    :path: ".symlinks/plugins/flutter_downloader/ios"
   flutter_exif_rotation:
     :path: ".symlinks/plugins/flutter_exif_rotation/ios"
   flutter_secure_storage:
@@ -93,7 +103,9 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   device_info: 76ce0b32e13034d1883be4a382433648f9dcee63
+  downloads_path_provider: d47f2d1ec01909f4c14643078120892270534966
   Flutter: 9d0fac939486c9aba2809b7982dfdbb47a7b0296
+  flutter_downloader: ff8f392c1b9d2a35f7c7578508e64504335fdab0
   flutter_exif_rotation: 458778023267a1f0157ae8d9483474749990ce24
   flutter_secure_storage: dbcc8ff35d99569c3a4d3b483afa3339416c1a78
   FMDB: 2ce00b547f966261cd18927a3ddb07cb6f3db82a

ios/Runner.xcodeproj/project.pbxproj

@@ -40,6 +40,8 @@
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
 		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
 		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+		A613FB172267A37400D5700D /* Permissions.m in Sources */ = {isa = PBXBuildFile; fileRef = A613FB162267A37400D5700D /* Permissions.m */; };
+		A636FC3B2260E0C000572DD9 /* libsqlite3.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = A636FC3A2260E0BF00572DD9 /* libsqlite3.tbd */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -169,6 +171,27 @@
 			remoteGlobalIDString = 1CE8375F5D12E4C085E8D4CF09BCD280;
 			remoteInfo = flutter_exif_rotation;
 		};
+		A613FB0D2267A32300D5700D /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 8980538D22047AAE00E47AD9 /* Pods.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = FA1F58DF894C00D1CB57E44CAC5E39D1;
+			remoteInfo = downloads_path_provider;
+		};
+		A613FB0F2267A32300D5700D /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 8980538D22047AAE00E47AD9 /* Pods.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = AFCF19CC08266EA5356273B00796D3D7;
+			remoteInfo = flutter_downloader;
+		};
+		A613FB112267A32300D5700D /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 8980538D22047AAE00E47AD9 /* Pods.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = D29DC8274C8441FD02113A00A303A14F;
+			remoteInfo = "flutter_downloader-FlutterDownloaderDatabase";
+		};
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -233,6 +256,9 @@
 		97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 		97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		A613FB162267A37400D5700D /* Permissions.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = Permissions.m; sourceTree = "<group>"; };
+		A613FB182267A38700D5700D /* Permissions.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = Permissions.h; sourceTree = "<group>"; };
+		A636FC3A2260E0BF00572DD9 /* libsqlite3.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libsqlite3.tbd; path = usr/lib/libsqlite3.tbd; sourceTree = SDKROOT; };
 		A6C34D3821BE816E00882F1E /* Runner.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = Runner.entitlements; sourceTree = "<group>"; };
 		AAF4B8238CF43C30122544EF /* Pods-OneSignalNotificationServiceExtension.release-production.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-OneSignalNotificationServiceExtension.release-production.xcconfig"; path = "Pods/Target Support Files/Pods-OneSignalNotificationServiceExtension/Pods-OneSignalNotificationServiceExtension.release-production.xcconfig"; sourceTree = "<group>"; };
 		B23196F4E53E7786037AC8B5 /* Pods-OneSignalNotificationServiceExtension.release-development.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-OneSignalNotificationServiceExtension.release-development.xcconfig"; path = "Pods/Target Support Files/Pods-OneSignalNotificationServiceExtension/Pods-OneSignalNotificationServiceExtension.release-development.xcconfig"; sourceTree = "<group>"; };
@@ -272,6 +298,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				A636FC3B2260E0C000572DD9 /* libsqlite3.tbd in Frameworks */,
 				9705A1C61CF904A100538489 /* Flutter.framework in Frameworks */,
 				3B80C3941E831B6300D905FE /* App.framework in Frameworks */,
 				26B90459017411DF809A7507 /* libPods-Runner.a in Frameworks */,
@@ -298,6 +325,7 @@
 		5ABC6138995F2182C962F35D /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				A636FC3A2260E0BF00572DD9 /* libsqlite3.tbd */,
 				898053C422047AF700E47AD9 /* SystemConfiguration.framework */,
 				898053C222047AF100E47AD9 /* UserNotifications.framework */,
 				8980538D22047AAE00E47AD9 /* Pods.xcodeproj */,
@@ -323,6 +351,9 @@
 			isa = PBXGroup;
 			children = (
 				8925094A222F0E0900455D87 /* libdevice_info.a */,
+				A613FB0E2267A32300D5700D /* libdownloads_path_provider.a */,
+				A613FB102267A32300D5700D /* libflutter_downloader.a */,
+				A613FB122267A32300D5700D /* FlutterDownloaderDatabase.bundle */,
 				89CF474422419BFD001BC50D /* libflutter_exif_rotation.a */,
 				8980539E22047AAF00E47AD9 /* libflutter_secure_storage.a */,
 				8928E31E22356450001DB32A /* libFMDB.a */,
@@ -391,6 +422,7 @@
 		97C146F01CF9000F007C117D /* Runner */ = {
 			isa = PBXGroup;
 			children = (
+				A613FB152267A32F00D5700D /* Plugins */,
 				A6C34D3821BE816E00882F1E /* Runner.entitlements */,
 				37BDAB2A2170B9A900811BA5 /* development.plist */,
 				37BDAB2B2170B9AA00811BA5 /* production.plist */,
@@ -415,6 +447,15 @@
 			name = "Supporting Files";
 			sourceTree = "<group>";
 		};
+		A613FB152267A32F00D5700D /* Plugins */ = {
+			isa = PBXGroup;
+			children = (
+				A613FB162267A37400D5700D /* Permissions.m */,
+				A613FB182267A38700D5700D /* Permissions.h */,
+			);
+			path = Plugins;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -650,6 +691,27 @@
 			remoteRef = 89CF474322419BFD001BC50D /* PBXContainerItemProxy */;
 			sourceTree = BUILT_PRODUCTS_DIR;
 		};
+		A613FB0E2267A32300D5700D /* libdownloads_path_provider.a */ = {
+			isa = PBXReferenceProxy;
+			fileType = archive.ar;
+			path = libdownloads_path_provider.a;
+			remoteRef = A613FB0D2267A32300D5700D /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
+		A613FB102267A32300D5700D /* libflutter_downloader.a */ = {
+			isa = PBXReferenceProxy;
+			fileType = archive.ar;
+			path = libflutter_downloader.a;
+			remoteRef = A613FB0F2267A32300D5700D /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
+		A613FB122267A32300D5700D /* FlutterDownloaderDatabase.bundle */ = {
+			isa = PBXReferenceProxy;
+			fileType = wrapper.cfbundle;
+			path = FlutterDownloaderDatabase.bundle;
+			remoteRef = A613FB112267A32300D5700D /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
 /* End PBXReferenceProxy section */
 
 /* Begin PBXResourcesBuildPhase section */
@@ -684,12 +746,14 @@
 				"${PODS_ROOT}/Intercom/Intercom/Intercom.framework/Versions/A/Resources/Intercom.bundle",
 				"${PODS_ROOT}/Intercom/Intercom/Intercom.framework/Versions/A/Resources/IntercomTranslations.bundle",
 				"${PODS_CONFIGURATION_BUILD_DIR}/TOCropViewController/TOCropViewControllerBundle.bundle",
+				"${PODS_CONFIGURATION_BUILD_DIR}/flutter_downloader/FlutterDownloaderDatabase.bundle",
 			);
 			name = "[CP] Copy Pods Resources";
 			outputPaths = (
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/Intercom.bundle",
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/IntercomTranslations.bundle",
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/TOCropViewControllerBundle.bundle",
+				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/FlutterDownloaderDatabase.bundle",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
@@ -793,6 +857,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				A613FB172267A37400D5700D /* Permissions.m in Sources */,
 				978B8F6F1D3862AE00F588F7 /* AppDelegate.m in Sources */,
 				97C146F31CF9000F007C117D /* main.m in Sources */,
 				1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */,

ios/Runner/AppDelegate.m

@@ -1,12 +1,14 @@
 #include "AppDelegate.h"
 #include "GeneratedPluginRegistrant.h"
 #import <uni_links/UniLinksPlugin.h>
+#import "Plugins/Permissions.h"
 
 @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application
     didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
   [GeneratedPluginRegistrant registerWithRegistry:self];
+  [Permissions registerWithRegistrar:[self registrarForPlugin:@"Permission"]];
   // Override point for customization after application launch.
   return [super application:application didFinishLaunchingWithOptions:launchOptions];
 }

ios/Runner/Info.plist

@@ -45,6 +45,7 @@
 	<string>We use this permission to allow you to share photos/videos from your library.</string>
 	<key>UIBackgroundModes</key>
 	<array>
+		<string>fetch</string>
 		<string>remote-notification</string>
 	</array>
 	<key>UILaunchStoryboardName</key>

ios/Runner/Plugins/Permissions.h

@@ -0,0 +1,4 @@
+#import <Flutter/Flutter.h>
+
+@interface Permissions : NSObject<FlutterPlugin>
+@end

ios/Runner/Plugins/Permissions.m

@@ -0,0 +1,43 @@
+#import "Permissions.h"
+
+#import <Foundation/Foundation.h>
+#import <Flutter/Flutter.h>
+
+@implementation Permissions
+
++ (void) registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*) registrar {
+  FlutterMethodChannel* channel = [FlutterMethodChannel methodChannelWithName:@"openbook.social/permissions" binaryMessenger:[registrar messenger]];
+  Permissions* instance = [[Permissions alloc] init];
+  [registrar addMethodCallDelegate:instance channel:channel];
+}
+
+- (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
+  NSString* method = [call method];
+  if ([method isEqualToString:@"checkPermission"]) {
+    [self checkPermission:call.arguments[@"permission"] result:result];
+  } else if ([method isEqualToString:@"requestPermission"]) {
+    [self requestPermission:call.arguments[@"permission"] result:result];
+  } else {
+    result(FlutterMethodNotImplemented);
+  }
+}
+
+- (void)checkPermission:(NSString*)permission result:(FlutterResult)result {
+  if ([permission isEqualToString:@"WRITE_EXTERNAL_STORAGE"]) {
+    // storage permission doesn't exist on iOS
+    result([NSNumber numberWithBool:YES]);
+  } else {
+    result(FlutterMethodNotImplemented);
+  }
+}
+
+- (void)requestPermission:(NSString*)permission result:(FlutterResult)result {
+  if ([permission isEqualToString:@"WRITE_EXTERNAL_STORAGE"]) {
+    // storage permission doesn't exist on iOS
+    result([NSNumber numberWithBool:YES]);
+  } else {
+    result(FlutterMethodNotImplemented);
+  }
+}
+
+@end