com.zzx.photo.ImageFragment.java Source code

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Here is the source code for com.zzx.photo.ImageFragment.java

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package com.zzx.photo;
/*
 * Copyright 2013 - learnNcode (learnncode@gmail.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

import java.util.ArrayList;

import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.Toast;

public class ImageFragment extends Fragment {
    private ArrayList<String> mSelectedItems = new ArrayList<String>();
    private ArrayList<MediaModel> mGalleryModelList;
    private GridView mImageGridView;
    private View mView;
    //   private OnImageSelectedListener mCallback;
    private GridViewAdapter mImageAdapter;
    private Cursor mImageCursor;
    private ArrayList<String> mUrlList = new ArrayList<String>();

    // Container Activity must implement this interface
    public interface OnImageSelectedListener {
        public void onImageSelected(int count);
    }

    //   @Override
    //   public void onAttach(Activity activity) {
    //      super.onAttach(activity);
    //
    //      // This makes sure that the container activity has implemented
    //      // the callback interface. If not, it throws an exception
    //      try {
    //         mCallback = (OnImageSelectedListener) activity;
    //      } catch (ClassCastException e) {
    //         throw new ClassCastException(activity.toString() + " must implement OnImageSelectedListener");
    //      }
    //   }

    public ImageFragment() {
        setRetainInstance(true);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        if (mView == null) {
            mView = inflater.inflate(R.layout.view_grid_layout_media_chooser, container, false);

            mImageGridView = (GridView) mView.findViewById(R.id.gridViewFromMediaChooser);

            if (getArguments() != null) {
                initPhoneImages(getArguments().getString("name"), getArguments().getString("bucketId"));
            } else {
                initPhoneImages();
            }

        } else {
            ((ViewGroup) mView.getParent()).removeView(mView);
            if (mImageAdapter == null || mImageAdapter.getCount() == 0) {
                Toast.makeText(getActivity(), getActivity().getString(R.string.no_media_file_available),
                        Toast.LENGTH_SHORT).show();
            }
        }

        return mView;
    }

    private void initPhoneImages(String bucketName, String bucketId) {
        try {
            final String orderBy = MediaStore.Images.Media.DATE_TAKEN;
            String searchParams = null;
            String bucket = bucketName;
            //         searchParams = "bucket_display_name = \"" + bucket + "\"";
            searchParams = "bucket_id  = \"" + bucketId + "\"";
            final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID,
                    MediaStore.Images.Media.DISPLAY_NAME };
            mImageCursor = getActivity().getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                    columns, searchParams, null, orderBy + " DESC");

            setAdapter(mImageCursor);
            mImageCursor.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void initPhoneImages() {
        try {
            final String orderBy = MediaStore.Images.Media.DATE_TAKEN;
            final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID,
                    MediaStore.Images.Media.DISPLAY_NAME };
            mImageCursor = getActivity().getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                    columns, null, null, orderBy + " DESC");
            setAdapter(mImageCursor);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void setAdapter(Cursor imagecursor) {

        if (imagecursor.getCount() > 0) {
            ///storage/sdcard0/Toast/download/T1bRVvBCWv1RXrhCrK_l.jpg
            ///storage/sdcard1/Toast/download/4_1.png
            mGalleryModelList = new ArrayList<MediaModel>();
            for (int i = 0; i < imagecursor.getCount(); i++) {
                imagecursor.moveToPosition(i);
                int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
                int nameColumuIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DISPLAY_NAME);
                String url = imagecursor.getString(dataColumnIndex).toString();
                String name = imagecursor.getString(nameColumuIndex);
                MediaModel galleryModel = new MediaModel(url, false, name);
                mGalleryModelList.add(galleryModel);
                mUrlList.add(url);
            }

            mImageAdapter = new GridViewAdapter(getActivity(), 0, mGalleryModelList, false);
            mImageGridView.setAdapter(mImageAdapter);
        } else {
            Toast.makeText(getActivity(), getActivity().getString(R.string.no_media_file_available),
                    Toast.LENGTH_SHORT).show();
        }

        mImageGridView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                // update the mStatus of each category in the adapter
                GridViewAdapter adapter = (GridViewAdapter) parent.getAdapter();
                MediaModel galleryModel = (MediaModel) adapter.getItem(position);

                String nameString = mUrlList.get(position);
                Intent intent = new Intent(getActivity(), ViewPagerActivity.class);
                intent.putExtra("imageurl", mUrlList);
                intent.putExtra("currentPosition", position);
                startActivity(intent);

                // inverse the status
                galleryModel.status = !galleryModel.status;

                adapter.notifyDataSetChanged();

                //            if (mCallback != null) {
                //               mCallback.onImageSelected(mSelectedItems.size());
                //               Intent intent = new Intent();
                //               intent.putStringArrayListExtra("list", mSelectedItems);
                //               getActivity().setResult(Activity.RESULT_OK, intent);
                //            }

            }
        });
    }

    public ArrayList<String> getSelectedImageList() {
        return mSelectedItems;
    }

    public void addItem(String item) {
        if (mImageAdapter != null) {
            MediaModel model = new MediaModel(item, false, "");
            mGalleryModelList.add(0, model);
            mImageAdapter.notifyDataSetChanged();
        } else {
            initPhoneImages();
        }
    }
}