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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
package com.facebook.react.bridge;
import javax.annotation.Nullable;
import android.app.Activity;
/**
* Base class for Catalyst native modules that require access to the {@link ReactContext}
* instance.
*/
public abstract class ReactContextBaseJavaModule extends BaseJavaModule {
private final ReactApplicationContext mReactApplicationContext;
public ReactContextBaseJavaModule(ReactApplicationContext reactContext) {
mReactApplicationContext = reactContext;
}
/**
* Subclasses can use this method to access catalyst context passed as a constructor
*/
protected final ReactApplicationContext getReactApplicationContext() {
return mReactApplicationContext;
}
/**
* Get the activity to which this context is currently attached, or {@code null} if not attached.
*
* DO NOT HOLD LONG-LIVED REFERENCES TO THE OBJECT RETURNED BY THIS METHOD, AS THIS WILL CAUSE
* MEMORY LEAKS.
*
* For example, never store the value returned by this method in a member variable. Instead, call
* this method whenever you actually need the Activity and make sure to check for {@code null}.
*/
protected @Nullable final Activity getCurrentActivity() {
return mReactApplicationContext.getCurrentActivity();
}
}