How to Quickly Build an Audio Editor With UI

<application
        android:requestLegacyExternalStorage="true"
        ……        >

// Obtain the API key from the agconnect-services.json file.
// It is recommended that the key be stored on cloud, which can be obtained when the app is running.
String api_key = AGConnectInstance.getInstance().getOptions().getString("client/api_key");
// Set the API key.
HAEApplication.getInstance().setApiKey(api_key);

/**
 * Customized activity, used for audio file selection.
 */
public class AudioFilePickerActivity extends AppCompatActivity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        performFileSearch();
    }

    private void performFileSearch() {
        // Select multiple audio files.
        registerForActivityResult(new ActivityResultContracts.GetMultipleContents(), new ActivityResultCallback<List<Uri>>() {
            @Override
            public void onActivityResult(List<Uri> result) {
                handleSelectedAudios(result);
                finish();
            }
        }).launch("audio/*");
    }

    /**
     * Process the selected audio files, turning the URIs into paths as needed.
     *
     * @param uriList indicates the selected audio files.
     */
    private void handleSelectedAudios(List<Uri> uriList) {
        // Check whether the audio files exist.
        if (uriList == null || uriList.size() == 0) {
            return;
        }

        ArrayList<String> audioList = new ArrayList<>();
        for (Uri uri : uriList) {
            // Obtain the real path.
            String filePath = FileUtils.getRealPath(this, uri);
            audioList.add(filePath);
        }

        // Return the audio file path to the audio editing UI.
        Intent intent = new Intent();
        // Use HAEConstant.AUDIO_PATH_LIST that is provided by the SDK.
        intent.putExtra(HAEConstant.AUDIO_PATH_LIST, audioList);
        // Use HAEConstant.RESULT_CODE as the result code.
        this.setResult(HAEConstant.RESULT_CODE, intent);
        finish();
    }
}

app/src/main/java/com/huawei/hms/audioeditor/demo/util/FileUtils.java

<activity
    android:name=".AudioFilePickerActivity"
    android:exported="false">
    <intent-filter>
        <action android:name="com.huawei.hms.audioeditor.chooseaudio" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>

HAEUIManager.getInstance().launchEditorActivity(this);

// List of level-1 menus. Below are just some examples:
ArrayList<Integer> menuList = new ArrayList<>();
// Add audio.
menuList.add(MenuCommon.MAIN_MENU_ADD_AUDIO_CODE);
// Record audio.
menuList.add(MenuCommon.MAIN_MENU_AUDIO_RECORDER_CODE);
// List of level-2 menus, which are displayed after audio files are input and selected.
ArrayList<Integer> secondMenuList = new ArrayList<>();
// Split audio.
secondMenuList.add(MenuCommon.EDIT_MENU_SPLIT_CODE);
// Delete audio.
secondMenuList.add(MenuCommon.EDIT_MENU_DEL_CODE);
// Adjust the volume.
secondMenuList.add(MenuCommon.EDIT_MENU_VOLUME2_CODE);
// Customize the output file path.
String exportPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC).getPath() + "/";
AudioEditorLaunchOption.Builder audioEditorLaunch = new AudioEditorLaunchOption.Builder()
        // Set the level-1 menus.
        .setCustomMenuList(menuList)
        // Set the level-2 menus.
        .setSecondMenuList(secondMenuList)
        // Set the output file path.
        .setExportPath(exportPath);
// Launch the audio editing screen with the menu list and customized output file path.
try {
    HAEUIManager.getInstance().launchEditorActivity(this, audioEditorLaunch.build(), new LaunchCallback() {
        @Override
        public void onFailed(int errCode, String errMsg) {
            Toast.makeText(mContext, errMsg, Toast.LENGTH_SHORT).show();
        }
    });
} catch (IOException e) {
    e.printStackTrace();
}

// Set the input audio file paths.
ArrayList<AudioInfo> audioInfoList = new ArrayList<>();
// Example of an audio file path:
String audioPath = "/storage/emulated/0/Music/Dream_It_Possible.flac";
// Create an instance of AudioInfo and pass the audio file path.
AudioInfo audioInfo = new AudioInfo(audioPath);
// Set the audio name.
audioInfo.setAudioName("Dream_It_Possible");
audioInfoList.add(audioInfo);
AudioEditorLaunchOption.Builder audioEditorLaunch = new AudioEditorLaunchOption.Builder()
        // Set the input audio file paths.
        .setFilePaths(audioInfoList);
// Launch the audio editing screen with the specified input audio file paths.
try {
    HAEUIManager.getInstance().launchEditorActivity(this, audioEditorLaunch.build(), new LaunchCallback() {
        @Override
        public void onFailed(int errCode, String errMsg) {
            Toast.makeText(mContext, errMsg, Toast.LENGTH_SHORT).show();
        }
    });
} catch (IOException e) {
    e.printStackTrace();
}

// Obtain the draft list. For example:
List<DraftInfo> draftList = HAEUIManager.getInstance().getDraftList();
// Specify the first draft in the draft list.
String draftId = null;
if (!draftList.isEmpty()) {
    draftId = draftList.get(0).getDraftId();
}
AudioEditorLaunchOption.Builder audioEditorLaunch = new AudioEditorLaunchOption.Builder()
        // Set the draft ID, which can be null.
        .setDraftId(draftId)
        // Set the draft mode. NOT_SAVE is the default value, which indicates not to save a project as a draft.
        .setDraftMode(AudioEditorLaunchOption.DraftMode.SAVE_DRAFT);
// Launch the audio editing screen with drafts.
try {
    HAEUIManager.getInstance().launchEditorActivity(this, audioEditorLaunch.build(), new LaunchCallback() {
        @Override
        public void onFailed(int errCode, String errMsg) {
            Toast.makeText(mContext, errMsg, Toast.LENGTH_SHORT).show();
        }
    });
} catch (IOException e) {
    e.printStackTrace();
}