Settings

Settings是对NSUserDefaults的封装。它是iOS平台上的一种持久的键值对存储。

示例

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Reference

Methods

clearWatch()

jsx

static clearWatch(watchId: number)

watchId is the number returned by watchKeys() when the subscription was originally configured.

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get()

jsx

static get(key: string): mixed

Get the current value for a given key in NSUserDefaults.

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set()

jsx

static set(settings: object)

Set one or more values in NSUserDefaults.

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watchKeys()

jsx

static watchKeys(keys: string | array<string>, callback: function): number

Subscribe to be notified when the value for any of the keys specified by the keys parameter has been changed in NSUserDefaults. Returns a watchId number that may be used with clearWatch() to unsubscribe.

Note: watchKeys() by design ignores internal set() calls and fires callback only on changes preformed outside of React Native code.