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15c587404c
Follow up from #21436 . That PR works for all embeddings except for Android, which creates a special JNI AssetResolver. Since the shell cannot recreate this resolver, update the logic to preserve existing resolvers instead.
66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/platform/android/apk_asset_provider.h"
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#include <unistd.h>
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#include <algorithm>
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#include <sstream>
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#include "flutter/fml/logging.h"
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namespace flutter {
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APKAssetProvider::APKAssetProvider(JNIEnv* env,
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jobject jassetManager,
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std::string directory)
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: java_asset_manager_(env, jassetManager),
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directory_(std::move(directory)) {
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assetManager_ = AAssetManager_fromJava(env, jassetManager);
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}
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APKAssetProvider::~APKAssetProvider() = default;
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bool APKAssetProvider::IsValid() const {
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return true;
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}
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bool APKAssetProvider::IsValidAfterAssetManagerChange() const {
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return true;
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}
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class APKAssetMapping : public fml::Mapping {
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public:
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APKAssetMapping(AAsset* asset) : asset_(asset) {}
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~APKAssetMapping() override { AAsset_close(asset_); }
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size_t GetSize() const override { return AAsset_getLength(asset_); }
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const uint8_t* GetMapping() const override {
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return reinterpret_cast<const uint8_t*>(AAsset_getBuffer(asset_));
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}
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private:
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AAsset* const asset_;
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FML_DISALLOW_COPY_AND_ASSIGN(APKAssetMapping);
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};
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std::unique_ptr<fml::Mapping> APKAssetProvider::GetAsMapping(
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const std::string& asset_name) const {
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std::stringstream ss;
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ss << directory_.c_str() << "/" << asset_name;
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AAsset* asset =
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AAssetManager_open(assetManager_, ss.str().c_str(), AASSET_MODE_BUFFER);
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if (!asset) {
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return nullptr;
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}
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return std::make_unique<APKAssetMapping>(asset);
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}
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} // namespace flutter
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