FilePicker

gistfile1.txt

package com.melnykov.booktracker.util;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.MediaStore;
import android.widget.Toast;
import com.melnykov.booktracker.BookTrackerApplication;
import com.melnykov.booktracker.R;
import timber.log.Timber;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class FilePicker {

    private static final String JPEG_FILE_PREFIX = "IMG_";
    private static final String JPEG_FILE_SUFFIX = ".jpg";

    private static final int REQUEST_CODE_PICK_IMAGE = 100;
    private static final int REQUEST_CODE_TAKE_IMAGE = 200;
    private static final int REQUEST_CODE_PICK_FILE = 300;

    private static String sLastCameraPhotoPath;

    private FilePicker() {
    }

    public static void pickCsvFile(Activity activity) {
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        intent.setType("text/csv");
        activity.startActivityForResult(intent, REQUEST_CODE_PICK_FILE);
    }

    public static void pickImage(Activity activity) {
        Intent intentPick = createPickImageIntent();
        // Ensure that there's an activity to handle the intent
        if (intentPick.resolveActivity(activity.getPackageManager()) != null) {
            activity.startActivityForResult(intentPick, REQUEST_CODE_PICK_IMAGE);
        } else {
            Toast.makeText(activity, R.string.error_no_gallery, Toast.LENGTH_SHORT).show();
        }
    }

    public static void takeImage(Activity activity) {
        Intent intentTake = createTakeImageIntent();
        // Ensure that there's a camera activity to handle the intent
        if (intentTake.resolveActivity(activity.getPackageManager()) != null) {
            activity.startActivityForResult(intentTake, REQUEST_CODE_TAKE_IMAGE);
        } else {
            Toast.makeText(activity, R.string.error_no_camera, Toast.LENGTH_SHORT).show();
        }
    }

    public static String parseImagePath(int requestCode, int resultCode, Intent intent) {
        if (resultCode == Activity.RESULT_OK) {
            if (requestCode == REQUEST_CODE_PICK_IMAGE) {
                return parseGalleryImagePath(intent);
            } else if (requestCode == REQUEST_CODE_TAKE_IMAGE) {
                return sLastCameraPhotoPath;
            }
        }
        return null;
    }

    public static String parseFilePath(int requestCode, int resultCode, Intent intent) {
        if (resultCode == Activity.RESULT_OK) {
            if (requestCode == REQUEST_CODE_PICK_FILE) {
                return parseFilePath(intent);
            }
        }
        return null;
    }

    private static String parseGalleryImagePath(Intent intent) {
        if (intent != null && intent.getData() != null) {
            return intent.getData().toString();
        }
        return null;
    }

    private static String parseFilePath(Intent intent) {
        if (intent != null && intent.getData() != null) {
            return intent.getData().getPath();
        }
        return null;
    }

    @SuppressLint("NewApi")
    private static Intent createPickImageIntent() {
        boolean kitkat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
        Intent intent = new Intent(kitkat? Intent.ACTION_OPEN_DOCUMENT: Intent.ACTION_GET_CONTENT);
        intent.setType("image/*");
        return intent;
    }

    private static Intent createTakeImageIntent() {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        // Create the File where the photo should go
        File photoFile = null;
        try {
            photoFile = createImageFile();
        } catch (IOException ex) {
            // TODO: add error toast
            Timber.e(ex, "Cannot create an image file.");
        }
        // Continue only if the File was successfully created
        if (photoFile != null) {
            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                    Uri.fromFile(photoFile));
        }
        return takePictureIntent;
    }

    private static File createImageFile() throws IOException {
        File storageDir;
        if (Device.isExternalStorageWritable()) {
            storageDir = Environment.getExternalStoragePublicDirectory(
                    Environment.DIRECTORY_PICTURES);
        } else {
            storageDir = BookTrackerApplication.getInstance().getFilesDir();
        }

        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = JPEG_FILE_PREFIX + timeStamp + "_";

        File image = File.createTempFile(
                imageFileName,             /* prefix */
                JPEG_FILE_SUFFIX,         /* suffix */
                storageDir                /* directory */
        );

        sLastCameraPhotoPath = "file:" + image.getAbsolutePath();
        return image;
    }
}

gistfile2.txt

FilePicker.pickImage(getActivity());
 
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    bookCoverImage = FilePicker.parseImagePath(requestCode, resultCode, data);
}