mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Andres Suarez
8bd3edec88
Reviewed By: aaronabramov Differential Revision: D33367752 fbshipit-source-id: 4ce94d184485e5ee0a62cf67ad2d3ba16e285c8f
50 lines
1.6 KiB
Plaintext
50 lines
1.6 KiB
Plaintext
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import <React/RCTLog.h>
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#import <React/RCTUIManager.h>
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#import <React/RCTViewManager.h>
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@interface RNTMyNativeViewManager : RCTViewManager
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@end
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@implementation RNTMyNativeViewManager
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RCT_EXPORT_MODULE(RNTMyNativeView)
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RCT_EXPORT_VIEW_PROPERTY(backgroundColor, UIColor)
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RCT_EXPORT_METHOD(callNativeMethodToChangeBackgroundColor : (nonnull NSNumber *)reactTag color : (NSString *)color)
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{
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[self.bridge.uiManager addUIBlock:^(RCTUIManager *uiManager, NSDictionary<NSNumber *, UIView *> *viewRegistry) {
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UIView *view = viewRegistry[reactTag];
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if (!view || ![view isKindOfClass:[UIView class]]) {
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RCTLogError(@"Cannot find NativeView with tag #%@", reactTag);
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return;
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}
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unsigned rgbValue = 0;
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NSString *colorString = [NSString stringWithCString:std::string([color UTF8String]).c_str()
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encoding:[NSString defaultCStringEncoding]];
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NSScanner *scanner = [NSScanner scannerWithString:colorString];
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[scanner setScanLocation:1]; // bypass '#' character
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[scanner scanHexInt:&rgbValue];
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view.backgroundColor = [UIColor colorWithRed:((rgbValue & 0xFF0000) >> 16) / 255.0
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green:((rgbValue & 0xFF00) >> 8) / 255.0
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blue:(rgbValue & 0xFF) / 255.0
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alpha:1.0];
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}];
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}
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- (UIView *)view
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{
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return [[UIView alloc] init];
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}
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@end
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