com.zzx.photo.BucketImageFragment.java Source code

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

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/*
 * 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.
 */

package com.zzx.photo;

import java.io.File;
import java.io.FilenameFilter;
import java.util.ArrayList;

import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.MediaStore;
import android.provider.MediaStore.Images.ImageColumns;
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;

import com.zzx.photo.bean.BucketEntry;
import com.zzx.photo.bean.MediaChooserConstants;

public class BucketImageFragment extends Fragment {

    // The indices should match the following projections.
    private final int INDEX_BUCKET_ID = 0;
    private final int INDEX_BUCKET_NAME = 1;
    private final int INDEX_BUCKET_URL = 2;

    private static final String[] PROJECTION_BUCKET = { ImageColumns.BUCKET_ID, ImageColumns.BUCKET_DISPLAY_NAME,
            ImageColumns.DATA };

    private View mView;
    private GridView mGridView;
    private BucketGridAdapter mBucketAdapter;

    private Cursor mCursor;

    public BucketImageFragment() {
        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);
            mGridView = (GridView) mView.findViewById(R.id.gridViewFromMediaChooser);
            init();
        } else {
            ((ViewGroup) mView.getParent()).removeView(mView);
            if (mBucketAdapter == null) {
                Toast.makeText(getActivity(), getActivity().getString(R.string.no_media_file_available),
                        Toast.LENGTH_SHORT).show();
            }
        }
        return mView;
    }

    private void init() {
        final String orderBy = MediaStore.Images.Media.DATE_TAKEN;
        mCursor = getActivity().getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                PROJECTION_BUCKET, null, null, orderBy + " DESC");
        ArrayList<BucketEntry> buffer = new ArrayList<BucketEntry>();
        try {
            while (mCursor.moveToNext()) {
                BucketEntry entry = new BucketEntry(mCursor.getInt(INDEX_BUCKET_ID),
                        mCursor.getString(INDEX_BUCKET_NAME), mCursor.getString(INDEX_BUCKET_URL));

                if (!buffer.contains(entry)) {
                    File file = new File(entry.bucketUrl);
                    String[] strings = file.getParentFile().list(new FilenameFilter() {

                        @Override
                        public boolean accept(File dir, String filename) {
                            // TODO Auto-generated method stub
                            return filename.endsWith(".jpg") || filename.endsWith(".jpeg")
                                    || filename.endsWith(".png");
                        }
                    });
                    if (strings != null)
                        entry.count = strings.length;
                    buffer.add(entry);
                }
            }

            if (mCursor.getCount() > 0) {
                mBucketAdapter = new BucketGridAdapter(getActivity(), 0, buffer, false);
                mGridView.setAdapter(mBucketAdapter);
            } else {
                Toast.makeText(getActivity(), getActivity().getString(R.string.no_media_file_available),
                        Toast.LENGTH_SHORT).show();
            }

            mGridView.setOnItemClickListener(new OnItemClickListener() {

                @Override
                public void onItemClick(AdapterView<?> adapter, View view, int position, long id) {

                    BucketEntry bucketEntry = (BucketEntry) adapter.getItemAtPosition(position);
                    Intent selectImageIntent = new Intent(getActivity(), ImageGalleryActivity.class);
                    selectImageIntent.putExtra("name", bucketEntry.bucketName);
                    selectImageIntent.putExtra("bucketId", bucketEntry.bucketId + "");
                    selectImageIntent.putExtra("image", true);
                    selectImageIntent.putExtra("isFromBucket", true);
                    getActivity().startActivityForResult(selectImageIntent,
                            MediaChooserConstants.BUCKET_SELECT_IMAGE_CODE);

                }
            });

        } finally {
            mCursor.close();
        }
    }

    public BucketGridAdapter getAdapter() {
        return mBucketAdapter;
    }

}