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public class ImageManager { private Context mContext; private String fileFullPath; public ImageManager(Context context) { mContext = context; } /** * 画像の保存 * * @param bitmap * @param albumName */ public void save(Bitmap bitmap, String albumName) { if (!canUseSd()) { Log.e("Error", "Can't use SD Card"); return; } saveToSd(getSdStorageDir(albumName), bitmap); } /** * ストレージに画像保存 * * @param dir * @param bitmap */ private void saveToSd(File dir, Bitmap bitmap) { String fileName = getFileName(); fileFullPath = dir.getAbsolutePath() + "/" + fileName; Log.d("保存パス","fileFullPath= " + fileFullPath); try { // 保存処理 FileOutputStream fos = new FileOutputStream(fileFullPath); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos); fos.flush(); fos.close(); } catch (Exception e) { Log.e("Error", "" + e.toString()); } finally { // アルバムに反映 addGallery(fileName); } } /** * 保存した画像をギャラリーに追加 * * @param fileName */ private void addGallery(String fileName) { try { ContentValues values = new ContentValues(); ContentResolver contentResolver = mContext.getContentResolver(); values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg"); values.put(MediaStore.Images.Media.TITLE, fileName); values.put("_data", fileFullPath); contentResolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); } catch (Exception e) { Log.e("Error", "" + e); } } /** * 画像のファイル名を日付から生成し取得 * * @return */ private String getFileName() { Date mDate = new Date(); SimpleDateFormat fileNameFormat = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.ENGLISH); String fileName = fileNameFormat.format(mDate) + ".jpg"; return fileName; } /** * ストレージのストレージパス取得 * * @param albumName * @return */ private File getSdStorageDir(String albumName) { File dir = new File(Environment.getExternalStoragePublicDirectory( Environment.DIRECTORY_PICTURES), albumName); if (!dir.exists()) { if (!dir.mkdirs()) { Log.e("Error", "Directory not created"); } } return dir; } /** * ストレージが読み込み可能か * * @return */ public boolean canReadSd() { String status = Environment.getExternalStorageState(); if (!status.equals(Environment.MEDIA_MOUNTED)) { return false; } File file = Environment.getExternalStorageDirectory(); if (file.canRead()) { return true; } return false; } /** * ストレージに書き込み可能か * * @return */ public boolean canWriteSd() { String status = Environment.getExternalStorageState(); if (!status.equals(Environment.MEDIA_MOUNTED)) { return false; } File file = Environment.getExternalStorageDirectory(); if (file.canWrite()) { return true; } return false; } /** * ストレージが使用可能か * * @return */ public boolean canUseSd() { return canReadSd() && canWriteSd(); } } |
使い方は、
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ImageView imageView = (ImageView) findViewById(R.id.photo_image); Bitmap imageForScale = ((BitmapDrawable) imageView.getDrawable()).getBitmap(); ImageManager imageManager = new ImageManager(this); try { String albumName = "Save image sample"; imageManager.save(imageForScale, albumName); } catch (Error e) { Log.e("MainActivity", "onCreate: " + e); } |