如何在android中使用图库图像制作图像滑块

Question

我试图用图库图片做图像滑块。我可以从图库中获取图像，但我不能像幻灯片一样显示，你能帮我解决一下我该怎么做。

这是我的代码

public class MainActivity extends AppCompatActivity {

    int PICK_IMAGE_MULTIPLE = 1;
    String imageEncoded;
    List<String> imagesEncodedList;
    public static final int IMAGE_GALLERY_REQUEST = 20;
    private ImageView imgPicture;

    InputStream inputstream;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        imgPicture = (ImageView) findViewById(R.id.imageView);
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent,"Select Picture"), PICK_IMAGE_MULTIPLE);}

    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        try {
            // When an Image is picked
            if (requestCode == PICK_IMAGE_MULTIPLE && resultCode == RESULT_OK
                    && null != data) {
                // Get the Image from data

                String[] filePathColumn = { MediaStore.Images.Media.DATA };
                imagesEncodedList = new ArrayList<String>();
                if(data.getData()!=null){

                    Uri mImageUri=data.getData();

                    // Get the cursor
                    Cursor cursor = getContentResolver().query(mImageUri,
                            filePathColumn, null, null, null);
                    // Move to first row
                    cursor.moveToFirst();

                    int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                    imageEncoded  = cursor.getString(columnIndex);
                    display(null,mImageUri,true);
                    cursor.close();

                } else {
                    if (data.getClipData() != null) {
                        ClipData mClipData = data.getClipData();
                        ArrayList<Uri> mArrayUri = new ArrayList<Uri>();
                        for (int i = 0; i < mClipData.getItemCount(); i++) {

                            ClipData.Item item = mClipData.getItemAt(i);
                            Uri uri = item.getUri();
                            mArrayUri.add(uri);
                            // Get the cursor
                            Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
                            // Move to first row
                            cursor.moveToFirst();

                            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);

                            imageEncoded  = cursor.getString(columnIndex);
                            imagesEncodedList.add(imageEncoded);
                            cursor.close();
                            display(mArrayUri,null,false);

                        }
                        Log.v("LOG_TAG", "Selected Images" + mArrayUri.size());
                    }
                }
            } else {
                Toast.makeText(this, "You haven't picked Image",
                        Toast.LENGTH_LONG).show();
            }
        } catch (Exception e) {
            Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
                    .show();
        }

        super.onActivityResult(requestCode, resultCode, data);
    }


    public void display(ArrayList<Uri> list, Uri SUri, Boolean x)
    {

        if(x){
            // declare a stream to read the image data from the SD Card.
            InputStream inputStream;

            // we are getting an input stream, based on the URI of the image.
            try {
                inputStream = getContentResolver().openInputStream(SUri);

                // get a bitmap from the stream.
                Bitmap image = BitmapFactory.decodeStream(inputStream);


                // show the image to the user
                imgPicture.setImageBitmap(image);

            } catch (FileNotFoundException e) {
                e.printStackTrace();
                // show a message to the user indictating that the image is unavailable.
                Toast.makeText(this, "Unable to open image", Toast.LENGTH_LONG).show();
            }
        }else
        {
            InputStream inputStream;

            // we are getting an input stream, based on the URI of the image.

            for (int i= 0; i<list.size(); i++) {
                try {
                    inputStream = getContentResolver().openInputStream(list.get(i));

                    // get a bitmap from the stream.
                    Bitmap image = BitmapFactory.decodeStream(inputStream);


                    // show the image to the user
                    imgPicture.setImageBitmap(image);

                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                    // show a message to the user indictating that the image is unavailable.
                    Toast.makeText(this, "Unable to open image", Toast.LENGTH_LONG).show();
                }
            }
        }



    }


}