react-native-image-picker 사용시 오류 발생

react-native-image-picker 사용시 다음과 같은 오류를 발생 할 경우가 있다.

=================================================================
Main Thread Checker: UI API called on a background thread: -[UIImagePickerController init]
PID: 9819, TID: 2519723, Thread name: (none), Queue name: com.facebook.react.ImagePickerManagerQueue, QoS: 0
Backtrace:
4   caudex                              0x00000001017b0e58 -[ImagePickerManager launchImagePicker:] + 96
5   caudex                              0x00000001017b0de0 -[ImagePickerManager launchImagePicker:options:] + 116
6   caudex                              0x00000001017af27c -[ImagePickerManager launchImageLibrary:callback:] + 140
7   CoreFoundation                      0x00000001b39b4c20 7519E999-1053-3367-B9D5-8844F6D3BDC6 + 1252384
8   CoreFoundation                      0x00000001b3884d30 7519E999-1053-3367-B9D5-8844F6D3BDC6 + 7472
9   CoreFoundation                      0x00000001b3885908 7519E999-1053-3367-B9D5-8844F6D3BDC6 + 10504
10  caudex                              0x0000000101291ed0 -[RCTModuleMethod invokeWithBridge:module:arguments:] + 1896
11  caudex                              0x00000001012958cc _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicE + 660
12  caudex                              0x0000000101295440 _ZZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEiENK3$_0clEv + 144
13  caudex                              0x00000001012953a4 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 28
14  libdispatch.dylib                   0x0000000104cf97fc _dispatch_call_block_and_release + 24
15  libdispatch.dylib                   0x0000000104cfabd8 _dispatch_client_callout + 16
16  libdispatch.dylib                   0x0000000104d01b48 _dispatch_lane_serial_drain + 744
17  libdispatch.dylib                   0x0000000104d026e4 _dispatch_lane_invoke + 448
18  libdispatch.dylib                   0x0000000104d0dadc _dispatch_workloop_worker_thread + 1324
19  libsystem_pthread.dylib             0x00000001b36cab88 _pthread_wqthread + 276
20  libsystem_pthread.dylib             0x00000001b36cd760 start_wqthread + 8
2020-02-24 08:24:12.923320+0100 caudex[9819:2519723] [reports] Main Thread Checker: UI API called on a background thread: -[UIImagePickerController init]
PID: 9819, TID: 2519723, Thread name: (none), Queue name: com.facebook.react.ImagePickerManagerQueue, QoS: 0
Backtrace:
4   caudex                              0x00000001017b0e58 -[ImagePickerManager launchImagePicker:] + 96
5   caudex                              0x00000001017b0de0 -[ImagePickerManager launchImagePicker:options:] + 116
6   caudex                              0x00000001017af27c -[ImagePickerManager launchImageLibrary:callback:] + 140
7   CoreFoundation                      0x00000001b39b4c20 7519E999-1053-3367-B9D5-8844F6D3BDC6 + 1252384
8   CoreFoundation                      0x00000001b3884d30 7519E999-1053-3367-B9D5-8844F6D3BDC6 + 7472
9   CoreFoundation                      0x00000001b3885908 7519E999-1053-3367-B9D5-8844F6D3BDC6 + 10504
10  caudex                              0x0000000101291ed0 -[RCTModuleMethod invokeWithBridge:module:arguments:] + 1896
11  caudex                              0x00000001012958cc _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicE + 660
12  caudex                              0x0000000101295440 _ZZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEiENK3$_0clEv + 144
13  caudex                              0x00000001012953a4 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 28
14  libdispatch.dylib                   0x0000000104cf97fc _dispatch_call_block_and_release + 24
15  libdispatch.dylib                   0x0000000104cfabd8 _dispatch_client_callout + 16
16  libdispatch.dylib                   0x0000000104d01b48 _dispatch_lane_serial_drain + 744
17  libdispatch.dylib                   0x0000000104d026e4 _dispatch_lane_invoke + 448
18  libdispatch.dylib                   0x0000000104d0dadc _dispatch_workloop_worker_thread + 1324
19  libsystem_pthread.dylib             0x00000001b36cab88 _pthread_wqthread + 276
20  libsystem_pthread.dylib             0x00000001b36cd760 start_wqthread + 8

 

facebook에서 아직 패치를 하지 않은 듯 하다.

이럴땐 ImagePickerManager.m를 다음과 같이 수정하면 해결 된다.

- (void)launchImagePicker:(RNImagePickerTarget)target options:(NSDictionary *)options
{
    self.options = options;
	dispatch_async(dispatch_get_main_queue(), ^(void) {
		[self launchImagePicker:target];
	});
}