Java tutorial
/* * 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 androidx.annotation.NonNull; import androidx.annotation.Nullable; /** Interface for a mutable map. Used to pass arguments from Java to JS. */ public interface WritableMap extends ReadableMap { void putNull(@NonNull String key); void putBoolean(@NonNull String key, boolean value); void putDouble(@NonNull String key, double value); void putInt(@NonNull String key, int value); void putString(@NonNull String key, @Nullable String value); void putArray(@NonNull String key, @Nullable ReadableArray value); void putMap(@NonNull String key, @Nullable ReadableMap value); void merge(@NonNull ReadableMap source); WritableMap copy(); }