feat: add clear image cache from memory and disk (#425)

android/src/main/java/com/dylanvann/fastimage/FastImageViewModule.java

@@ -4,6 +4,7 @@ import android.app.Activity;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.load.model.GlideUrl;
+import com.facebook.react.bridge.Promise;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
@@ -53,4 +54,33 @@ class FastImageViewModule extends ReactContextBaseJavaModule {
             }
         });
     }
+
+    @ReactMethod
+    public void clearMemoryCache(final Promise promise) {
+        final Activity activity = getCurrentActivity();
+        if (activity == null) {
+            promise.resolve(null);
+            return;
+        }
+
+        activity.runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                Glide.get(activity.getApplicationContext()).clearMemory();
+                promise.resolve(null);
+            }
+        });
+    }
+
+    @ReactMethod
+    public void clearDiskCache(Promise promise) {
+        final Activity activity = getCurrentActivity();
+        if (activity == null) {
+            promise.resolve(null);
+            return;
+        }
+
+        Glide.get(activity.getApplicationContext()).clearDiskCache();
+        promise.resolve(null);
+    }
 }

ios/FastImage/FFFastImageViewManager.m

@@ -1,6 +1,7 @@
 #import "FFFastImageViewManager.h"
 #import "FFFastImageView.h"
 
+#import <SDWebImage/SDImageCache.h>
 #import <SDWebImage/SDWebImagePrefetcher.h>
 
 @implementation FFFastImageViewManager
@@ -34,5 +35,17 @@ RCT_EXPORT_METHOD(preload:(nonnull NSArray<FFFastImageSource *> *)sources)
     [[SDWebImagePrefetcher sharedImagePrefetcher] prefetchURLs:urls];
 }
 
-@end
+RCT_EXPORT_METHOD(clearMemoryCache:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
+{
+    [SDImageCache.sharedImageCache clearMemory];
+    resolve(NULL);
+}
 
+RCT_EXPORT_METHOD(clearDiskCache:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
+{
+    [SDImageCache.sharedImageCache clearDiskOnCompletion:^(){
+        resolve(NULL);
+    }];
+}
+
+@end

src/index.js.flow

@@ -68,4 +68,6 @@ declare export default class FastImage extends React$Component<FastImageProps> {
     static priority: Priority;
     static cacheControl: CacheControl;
     static preload: PreloadFn;
+    static clearMemoryCache: () => Promise<void>;
+    static clearDiskCache: () => Promise<void>;
 }

src/index.tsx

@@ -203,6 +203,8 @@ interface FastImageStaticProperties {
     priority: typeof priority
     cacheControl: typeof cacheControl
     preload: (sources: Source[]) => void
+    clearMemoryCache: () => Promise<void>
+    clearDiskCache: () => Promise<void>
 }
 
 const FastImage: React.ComponentType<FastImageProps> &
@@ -217,6 +219,10 @@ FastImage.priority = priority
 FastImage.preload = (sources: Source[]) =>
     FastImageViewNativeModule.preload(sources)
 
+FastImage.clearMemoryCache = () => FastImageViewNativeModule.clearMemoryCache()
+
+FastImage.clearDiskCache = () => FastImageViewNativeModule.clearDiskCache()
+
 const styles = StyleSheet.create({
     imageContainer: {
         overflow: 'hidden',