Summary:
Adds support for JS async methods and helps guide people writing native modules w.r.t. the callbacks. With this diff, on the native side you write:
```objc
RCT_EXPORT_METHOD(getValueAsync:(NSString *)key
resolver:(RCTPromiseResolver)resolve
rejecter:(RCTPromiseRejecter)reject)
{
NSError *error = nil;
id value = [_nativeDataStore valueForKey:key error:&error];
// "resolve" and "reject" are automatically defined blocks that take
// any object (nil is OK) and an NSError, respectively
if (!error) {
resolve(value);
} else {
reject(error);
}
}
```
On the JS side, you can write:
```js
var {DemoDataStore} = require('react-native').NativeModules;
DemoDataStore.getValueAsync('sample-key').then((value) => {
console.log('Got:', value);
}, (error) => {
console.error(error);
// "error" is an Error object whose message is the NSError's description.
// The NSError's code and domain are also set, and the native trace i
Closes https://github.com/facebook/react-native/pull/1232
Github Author: James Ide <ide@jameside.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.
Summary:
External modules are any Objective-C class in which the implementation is private. This currently will be most useful for Swift classes but also has potential to allow exposing methods on 3rd party libraries to the bridge.
Closes https://github.com/facebook/react-native/pull/982
Github Author: Robert Payne <robertpayne@me.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.
Summary:
cc @a2 @nicklockwood
This diff introduces a new macro called `RCT_EXPORT_NAMED_METHOD`, which is like `RCT_EXPORT_METHOD` but lets you choose the name of the method in JS. This diff is backwards compatible with the `RCT_EXPORT_METHOD` and legacy `RCT_EXPORT` macros.
The entries in the data segment now contain `__func__`, the Obj-C selector signature, and the JS name. If the JS name is `NULL`, we take the legacy `RCT_EXPORT` code path. If the JS name is an empty string, we use the Obj-C selector's name up to the first colon (that is, the behavior of `RCT_EXPORT_METHOD`).
Since there are three values in each data segment entry, the macros now specify 1-byte alignment. Without the byte alignment, the compiler defaults to 2-byte alignment meaning that each entry takes up 4 bytes instead of 3. The extra byte isn't a concern but being explicit about the alignment should reduce compiler surprises.
Closes https://github.com/facebook/react-native/pull/802
Github Author: James Ide <ide@jameside.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.
Chace Liang
James Ide
Tadeu Zagallo
Robert Payne
Nick Lockwood
Alex Akers
Ben Hiller