[iOS] Protect animation argument missing which cause crash on iOS. (#…

…2771)
apache · Aug 1, 2019 · 7b51a1d · 7b51a1d
1 parent b2a455a
commit 7b51a1d
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/ios/sdk/WeexSDK/Sources/Module/WXAnimationModule.m b/ios/sdk/WeexSDK/Sources/Module/WXAnimationModule.m
@@ -332,6 +332,10 @@ - (void)transitionWithArgs:(NSDictionary *)args withProperty:(NSString *)propert
                 transition:(WXTransition*)transition
              transitionDic:(NSMutableDictionary*)transitionDic
 {
+    if (args[@"styles"][property] == nil) {
+        return;
+    }
+
     [transition.filterStyles setObject:args[@"styles"][property] forKey:property];
 
     id oldStyleValue = target.styles[property];
@@ -346,7 +350,7 @@ - (void)transitionWithArgs:(NSDictionary *)args withProperty:(NSString *)propert
     [target _modifyStyles:@{property:args[@"styles"][property]}];
     [transitionDic setObject:@([args[@"duration"] doubleValue]) forKey:kWXTransitionDuration];
     [transitionDic setObject:@([args[@"delay"] doubleValue]) forKey:kWXTransitionDelay];
-    [transitionDic setObject:args[@"timingFunction"] forKey:kWXTransitionTimingFunction];
+    [transitionDic setObject:args[@"timingFunction"] ?: @"linear" forKey:kWXTransitionTimingFunction];
 }
 
 - (void)animation:(WXComponent *)targetComponent args:(NSDictionary *)args callback:(WXModuleKeepAliveCallback)callback