mirror of
https://github.com/zhigang1992/react-native.git
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c06efc0831
Summary: Refactor modules that take activities (or activities that implement some interface) as constructor args to not do that. Expose `getCurrentActivity()` in `ReactContext` and use that wherever the activity is needed. public Reviewed By: astreet Differential Revision: D2680462 fb-gh-sync-id: f263b3fe5b422b7aab9fdadd051cef4e82797b0a
48 lines
1.5 KiB
Java
48 lines
1.5 KiB
Java
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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package com.facebook.react.bridge;
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import javax.annotation.Nullable;
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import android.app.Activity;
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/**
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* Base class for Catalyst native modules that require access to the {@link ReactContext}
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* instance.
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*/
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public abstract class ReactContextBaseJavaModule extends BaseJavaModule {
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private final ReactApplicationContext mReactApplicationContext;
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public ReactContextBaseJavaModule(ReactApplicationContext reactContext) {
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mReactApplicationContext = reactContext;
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}
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/**
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* Subclasses can use this method to access catalyst context passed as a constructor
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*/
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protected final ReactApplicationContext getReactApplicationContext() {
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return mReactApplicationContext;
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}
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/**
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* Get the activity to which this context is currently attached, or {@code null} if not attached.
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*
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* DO NOT HOLD LONG-LIVED REFERENCES TO THE OBJECT RETURNED BY THIS METHOD, AS THIS WILL CAUSE
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* MEMORY LEAKS.
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*
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* For example, never store the value returned by this method in a member variable. Instead, call
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* this method whenever you actually need the Activity and make sure to check for {@code null}.
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*/
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protected @Nullable final Activity getCurrentActivity() {
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return mReactApplicationContext.getCurrentActivity();
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}
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}
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