java - registerActivityForResult 从相机获取结果

Question

特别是@Muntashir Akon，我来自“Down Under”，请抽出时间。

众所周知，startActivityForResult 已已弃用，感谢 google。我们如何从相机中获取结果……这是我的代码 intentData 总是返回 null。请帮助这让我发疯。

我可能使用了错误的调用者，但我似乎无法在互联网上找到任何东西

对于@Muntashir Akon，真正的来电者是你的...

    protected final RegisterActivityResultHelper<Intent, 
         ActivityResult> activityLauncher =
            RegisterActivityResultHelper.registerActivityForResult( 
                     this );

RegisterActivityForResult
    ActivityResultLauncher activityResultLauncher =
        registerForActivityResult( new ActivityResultContracts.StartActivityForResult(),
            new ActivityResultCallback()
    {
        @Override
        public void onActivityResult( Object result )
        {
        }
    });

    /////////////////////////////////////////////////////////////////////////////////////

    private void takePhoto()
    {
        String uuid = UUID.randomUUID().toString();
        File outputDir = getCacheDir();
        File file;
        try
        {
            file = File.createTempFile( uuid, ".jpg", outputDir );
        }
        catch( IOException e )
        {
            return;
        }

        Intent intent = new Intent( android.provider.MediaStore.ACTION_IMAGE_CAPTURE );
        Uri uri;
        try
        {
            uri = FileProvider.getUriForFile( Objects.requireNonNull(
                    getApplicationContext()),
                    BuildConfig.APPLICATION_ID + ".fileProvider", file );
        }
        catch( IllegalArgumentException e )
        {
            return;
        }

        intent.putExtra( MediaStore.EXTRA_OUTPUT, uri );
        activityLauncher.launch( intent );
        activityLauncher.setOnActivityResult( result ->
        {
            if( result.getResultCode() == RESULT_CANCELED )
                return;

            Intent intentData = result.getData();
            if( intentData == null )
            {
                return;
            }

            Uri imageUri = intentData.getData();
            Bundle bundle = intentData.getExtras();

            Log.e("URI",imageUri.toString());
            Bitmap bmp = ( Bitmap ) bundle.get( "data" );
        } );
    }

Answer 1

好的，我有答案了，希望对大家有帮助

启动器...

    /////////////////////////////////////////////////////////////////

    ActivityResultLauncher<Uri> takeAPhoto = registerForActivityResult(
        new ActivityResultContracts.TakePicture(), result ->
    {
        if( !result  )
            return;

        Helpers.loadPicIntoGlide( ivItemImage, photoTakenUri );
        etImageName.setText( photoTakenUri.getPath() );
    } );

来电者...

    /////////////////////////////////////////////////////////////////////////////////////

    private void takePhoto()
    {
        String uuid = UUID.randomUUID().toString();
        File outputDir = getCacheDir();
        File file;
        try
        {
            file = File.createTempFile( uuid, ".jpg", outputDir );
        }
        catch( IOException e )
        {
            return;
        }

        try
        {
            photoTakenUri = FileProvider.getUriForFile( Objects.requireNonNull(
                    getApplicationContext()),
                    BuildConfig.APPLICATION_ID + ".fileProvider", file );
        }
        catch( IllegalArgumentException e )
        {
            return;
        }

        takeAPhoto.launch( photoTakenUri );
    }

    ////////////////////////////////////////////////////////////////////////