呼叫系統照相機和相簿
阿新 • • 發佈：2019-02-13
介紹的文章很多，這裡通過一個例項來展示，先看看選項：一個顯示頭像的ImageView和點選後彈出的選項框（選項框的製作在之前的文章有介紹http://blog.csdn.net/nzzl54/article/details/52086007）
接下來是看看結構：
一個一個檔案講解：
1.AdvancedFileUtils:高階的檔案處理工具
public class AdvancedFileUtils { public static File getDiskCacheDir(Context context, String uniqueName) { // Check if media is mounted or storage is built-in, if so, try and use // external cache dir // otherwise use internal cache dir final String cachePath = Environment.MEDIA_MOUNTED.equals(Environment .getExternalStorageState()) || !isExternalStorageRemovable() ? getExternalCacheDir( context).getPath() : context.getCacheDir().getPath(); return new File(cachePath + File.separator + uniqueName); } /** * Check if external storage is built-in or removable. * * @return True if external storage is removable (like an SD card), false * otherwise. */ @TargetApi(9) public static boolean isExternalStorageRemovable() { if (Build.VERSION.SDK_INT >= 9) { return Environment.isExternalStorageRemovable(); } return true; } /** * Get the external app cache directory. * * @param context * The context to use * @return The external cache dir */ private static File getExternalCacheDir(Context context) { // if (BaseVersionUtils.hasFroyo()) { // return context.getExternalCacheDir(); // } // Before Froyo we need to construct the external cache dir ourselves final String cacheDir = "/Android/data/" + context.getPackageName() + "/cache/"; return new File(Environment.getExternalStorageDirectory().getPath() + cacheDir); } /** * 獲取副檔名 * * @param fileName * @return */ public static String getFileFormat(String fileName) { if (StringUtils.isEmpty(fileName)) return ""; int point = fileName.lastIndexOf('.'); return fileName.substring(point + 1); } /** * 根據檔案絕對路徑獲取檔名 * * @param filePath * @return */ public static String getFileName(String filePath) { if (StringUtils.isEmpty(filePath)) return ""; return filePath.substring(filePath.lastIndexOf(File.separator) + 1); } /** * * @param path 檔案路徑 * @param fileName 檔名，如xxx.jpg * @param b * @return 返回儲存本地成功與否 */ public static boolean saveBitmapToLocal(String path,String fileName,Bitmap b){ if (b == null) { return false; } boolean result = false ; String storageState = Environment.getExternalStorageState(); if (storageState.equals(Environment.MEDIA_MOUNTED)) { File dir = new File(path); if (!dir.exists()) { dir.mkdirs(); } FileOutputStream fos=null; try { fos = new FileOutputStream(path + fileName); b.compress(CompressFormat.JPEG, 100, fos); fos.flush(); result = true; } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally{ try { fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } return result; } }
2.BottomSelectorPopDialog:自定義彈框，略
3.Helper_Image:這裡暫時不用，略
4.ImageUtils:工具類-圖片處理
5.PhotoOperation:獲取圖片截圖的方法public class ImageUtils { public final static String SDCARD_MNT = "/mnt/sdcard"; // public final static String SDCARD = "/sdcard"; public final static String SDCARD = Environment.getExternalStorageDirectory().getPath(); // 請求相簿 public static final int REQUEST_CODE_GETIMAGE_BYSDCARD = 0; //請求相機 public static final int REQUEST_CODE_GETIMAGE_BYCAMERA = 1; //請求裁剪 public static final int REQUEST_CODE_GETIMAGE_BYCROP = 2; /** * 寫圖片檔案 在Android系統中，檔案儲存在 /data/data/PACKAGE_NAME/files 目錄下 * * @throws IOException */ public static void saveImage(Context context, String fileName, Bitmap bitmap) throws IOException { saveImage(context, fileName, bitmap, 100); } public static void saveImage(Context context, String fileName, Bitmap bitmap, int quality) throws IOException { if (bitmap == null || fileName == null || context == null) return; FileOutputStream fos = context.openFileOutput(fileName, Context.MODE_PRIVATE); ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, quality, stream); byte[] bytes = stream.toByteArray(); fos.write(bytes); fos.close(); } /** * 寫圖片檔案到SD卡 * * @throws IOException */ public static void saveImageToSD(Context ctx, String filePath, Bitmap bitmap, int quality) throws IOException { if (bitmap != null) { File file = new File(filePath.substring(0, filePath.lastIndexOf(File.separator))); if (!file.exists()) { file.mkdirs(); } BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream(filePath)); bitmap.compress(Bitmap.CompressFormat.JPEG, quality, bos); bos.flush(); bos.close(); if(ctx!=null){ scanPhoto(ctx, filePath); } } } public static void saveBackgroundImage(Context ctx, String filePath, Bitmap bitmap, int quality) throws IOException{ if (bitmap != null) { File file = new File(filePath.substring(0, filePath.lastIndexOf(File.separator))); if (!file.exists()) { file.mkdirs(); } BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream(filePath)); bitmap.compress(Bitmap.CompressFormat.PNG, quality, bos); bos.flush(); bos.close(); if(ctx!=null){ scanPhoto(ctx, filePath); } } } /** * 讓Gallery上能馬上看到該圖片 */ private static void scanPhoto(Context ctx, String imgFileName) { Intent mediaScanIntent = new Intent( Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); File file = new File(imgFileName); Uri contentUri = Uri.fromFile(file); mediaScanIntent.setData(contentUri); ctx.sendBroadcast(mediaScanIntent); } /** * 獲取bitmap * * @param context * @param fileName * @return */ public static Bitmap getBitmap(Context context, String fileName) { FileInputStream fis = null; Bitmap bitmap = null; try { fis = context.openFileInput(fileName); bitmap = BitmapFactory.decodeStream(fis); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (OutOfMemoryError e) { e.printStackTrace(); } finally { try { fis.close(); } catch (Exception e) { } } return bitmap; } /** * 獲取bitmap * * @param filePath * @return */ public static Bitmap getBitmapByPath(String filePath) { return getBitmapByPath(filePath, null); } public static Bitmap getBitmapByPath(String filePath, BitmapFactory.Options opts) { if (StringUtils.isEmpty(filePath)) { return null; } FileInputStream fis = null; Bitmap bitmap = null; try { File file = new File(filePath); fis = new FileInputStream(file); bitmap = BitmapFactory.decodeStream(fis, null, opts); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (OutOfMemoryError e) { e.printStackTrace(); } finally { try { fis.close(); } catch (Exception e) { } } return bitmap; } /** * 網路地址轉換為bitmap * @param url * @return */ public static Bitmap returnBitMap(String url){ Bitmap bitmap = null; InputStream in = null; BufferedOutputStream out = null; try { in = new BufferedInputStream(new URL(url).openStream(), 1024); final ByteArrayOutputStream dataStream = new ByteArrayOutputStream(); out = new BufferedOutputStream(dataStream, 1024); copy(in, out); out.flush(); byte[] data = dataStream.toByteArray(); bitmap = BitmapFactory.decodeByteArray(data, 0, data.length); data = null; return bitmap; } catch (IOException e) { e.printStackTrace(); return null; } } private static void copy(InputStream in, OutputStream out) throws IOException { byte[] b = new byte[1024]; int read; while ((read = in.read(b)) != -1) { out.write(b, 0, read); } } /** * 獲取bitmap * * @param file * @return */ public static Bitmap getBitmapByFile(File file) { FileInputStream fis = null; Bitmap bitmap = null; try { fis = new FileInputStream(file); bitmap = BitmapFactory.decodeStream(fis); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (OutOfMemoryError e) { e.printStackTrace(); } finally { try { fis.close(); } catch (Exception e) { } } return bitmap; } /** * 使用當前時間戳拼接一個唯一的檔名 * @return */ public static String getTempFileName() { SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss_SS", Locale.CHINA); String fileName = format.format(new Timestamp(System .currentTimeMillis())); return fileName; } /** * 獲取照相機使用的目錄 * * @return */ public static String getCamerPath() { return Environment.getExternalStorageDirectory() + File.separator + "FounderNews" + File.separator; } /** * 判斷當前Url是否標準的content://樣式，如果不是，則返回絕對路徑 * * @param mUri * @return */ public static String getAbsolutePathFromNoStandardUri(Uri mUri) { String filePath = null; String mUriString = mUri.toString(); mUriString = Uri.decode(mUriString); String pre1 = "file://" + SDCARD + File.separator; String pre2 = "file://" + SDCARD_MNT + File.separator; if (mUriString.startsWith(pre1)) { filePath = Environment.getExternalStorageDirectory().getPath() + File.separator + mUriString.substring(pre1.length()); } else if (mUriString.startsWith(pre2)) { filePath = Environment.getExternalStorageDirectory().getPath() + File.separator + mUriString.substring(pre2.length()); } return filePath; } /** * 通過uri獲取檔案的絕對路徑 * * @param uri * @return */ @SuppressWarnings("deprecation") public static String getAbsoluteImagePath(Activity context, Uri uri) { String imagePath = ""; String[] proj = { MediaStore.Images.Media.DATA }; Cursor cursor = context.managedQuery(uri, proj, // Which columns to // return null, // WHERE clause; which rows to return (all rows) null, // WHERE clause selection arguments (none) null); // Order-by clause (ascending by name) if (cursor != null) { int column_index = cursor .getColumnIndexOrThrow(MediaStore.Images.Media.DATA); if (cursor.getCount() > 0 && cursor.moveToFirst()) { imagePath = cursor.getString(column_index); } } return imagePath; } public static Bitmap loadImgThumbnail(String filePath, int w, int h) { Bitmap bitmap = getBitmapByPath(filePath); if (bitmap!=null) { return zoomBitmap(bitmap, w, h); }else { return bitmap; } } public static Bitmap loadDefaultImg(Bitmap bm,int w,int h){ return zoomBitmap(bm, w, h); } /** * 計算縮放圖片的寬高 * * @param img_size * @param square_size * @return */ public static int[] scaleImageSize(int[] img_size, int square_size) { if (img_size[0] <= square_size && img_size[1] <= square_size) return img_size; double ratio = square_size / (double) Math.max(img_size[0], img_size[1]); return new int[] { (int) (img_size[0] * ratio), (int) (img_size[1] * ratio) }; } /** * 建立縮圖 * * @param context * @param largeImagePath * 原始大圖路徑 * @param thumbfilePath * 輸出縮圖路徑 * @param square_size * 輸出圖片寬度 * @param quality * 輸出圖片質量 * @throws IOException */ public static void createImageThumbnail(Context context, String largeImagePath, String thumbfilePath, int square_size, int quality) throws IOException { BitmapFactory.Options opts = new BitmapFactory.Options(); opts.inSampleSize = 1; // 原始圖片bitmap Bitmap cur_bitmap = getBitmapByPath(largeImagePath, opts); if (cur_bitmap == null) return; // 原始圖片的高寬 int[] cur_img_size = new int[] { cur_bitmap.getWidth(), cur_bitmap.getHeight() }; // 計算原始圖片縮放後的寬高 int[] new_img_size = scaleImageSize(cur_img_size, square_size); // 生成縮放後的bitmap Bitmap thb_bitmap = zoomBitmap(cur_bitmap, new_img_size[0], new_img_size[1]); // 生成縮放後的圖片檔案 saveImageToSD(null,thumbfilePath, thb_bitmap, quality); } /** * 放大縮小圖片 * * @param bgimage * @param newWidth * @param newHeight * @return */ public static Bitmap zoomBitmap(Bitmap bgimage, double newWidth, double newHeight) { // 獲取這個圖片的寬和高 float width = bgimage.getWidth(); float height = bgimage.getHeight(); // 建立操作圖片用的matrix物件 Matrix matrix = new Matrix(); // 計算寬高縮放率 float scaleWidth = ((float) newWidth) / width; float scaleHeight = ((float) newHeight) / height; // 縮放圖片動作 matrix.postScale(scaleWidth, scaleHeight); Bitmap bitmap = Bitmap.createBitmap(bgimage, 0, 0, (int) width, (int) height, matrix, true); return bitmap; } public static Bitmap scaleBitmap(Bitmap bitmap) { // 獲取這個圖片的寬和高 int width = bitmap.getWidth(); int height = bitmap.getHeight(); // 定義預轉換成的圖片的寬度和高度 int newWidth = 200; int newHeight = 200; // 計算縮放率，新尺寸除原始尺寸 float scaleWidth = ((float) newWidth) / width; float scaleHeight = ((float) newHeight) / height; // 建立操作圖片用的matrix物件 Matrix matrix = new Matrix(); // 縮放圖片動作 matrix.postScale(scaleWidth, scaleHeight); // 旋轉圖片 動作 // matrix.postRotate(45); // 建立新的圖片 Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true); return resizedBitmap; } /** * (縮放)重繪圖片 * * @param context * Activity * @param bitmap * @return */ public static Bitmap reDrawBitMap(Activity context, Bitmap bitmap) { DisplayMetrics dm = new DisplayMetrics(); context.getWindowManager().getDefaultDisplay().getMetrics(dm); // int rHeight = dm.heightPixels; int rWidth = dm.widthPixels; // int height = bitmap.getHeight(); int width = bitmap.getWidth(); float zoomScale; if (width >= rWidth) zoomScale = ((float) rWidth) / width; else zoomScale = 1.0f; // 建立操作圖片用的matrix物件 Matrix matrix = new Matrix(); // 縮放圖片動作 matrix.postScale(zoomScale, zoomScale); Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); return resizedBitmap; } /** * 將Drawable轉化為Bitmap * * @param drawable * @return */ public static Bitmap drawableToBitmap(Drawable drawable) { int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap bitmap = Bitmap.createBitmap(width, height, drawable .getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, width, height); drawable.draw(canvas); return bitmap; } /** * 獲得圓角圖片的方法 * * @param bitmap * @param roundPx * 一般設成14 * @return */ public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float roundPx) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final RectF rectF = new RectF(rect); paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return output; } /** * 獲得帶倒影的圖片方法 * * @param bitmap * @return */ public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap) { final int reflectionGap = 4; int width = bitmap.getWidth(); int height = bitmap.getHeight(); Matrix matrix = new Matrix(); matrix.preScale(1, -1); Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 0, height / 2, width, height / 2, matrix, false); Bitmap bitmapWithReflection = Bitmap.createBitmap(width, (height + height / 2), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(bitmapWithReflection); canvas.drawBitmap(bitmap, 0, 0, null); Paint deafalutPaint = new Paint(); canvas.drawRect(0, height, width, height + reflectionGap, deafalutPaint); canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null); Paint paint = new Paint(); LinearGradient shader = new LinearGradient(0, bitmap.getHeight(), 0, bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff, 0x00ffffff, Shader.TileMode.CLAMP); paint.setShader(shader); // Set the Transfer mode to be porter duff and destination in paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN)); // Draw a rectangle using the paint with our linear gradient canvas.drawRect(0, height, width, bitmapWithReflection.getHeight() + reflectionGap, paint); return bitmapWithReflection; } /** * 獲取圖片型別 * * @param file * @return */ public static String getImageType(File file) { if (file == null || !file.exists()) { return null; } InputStream in = null; try { in = new FileInputStream(file); String type = getImageType(in); return type; } catch (IOException e) { return null; } finally { try { if (in != null) { in.close(); } } catch (IOException e) { } } } /** * 獲取圖片的型別資訊 * * @param in * @return * @see #getImageType(byte[]) */ public static String getImageType(InputStream in) { if (in == null) { return null; } try { byte[] bytes = new byte[8]; in.read(bytes); return getImageType(bytes); } catch (IOException e) { return null; } } /** * 獲取圖片的型別資訊 * * @param bytes * 2~8 byte at beginning of the image file * @return image mimetype or null if the file is not image */ public static String getImageType(byte[] bytes) { if (isJPEG(bytes)) { return "image/jpeg"; } if (isGIF(bytes)) { return "image/gif"; } if (isPNG(bytes)) { return "image/png"; } if (isBMP(bytes)) { return "application/x-bmp"; } return null; } private static boolean isJPEG(byte[] b) { if (b.length < 2) { return false; } return (b[0] == (byte) 0xFF) && (b[1] == (byte) 0xD8); } private static boolean isGIF(byte[] b) { if (b.length < 6) { return false; } return b[0] == 'G' && b[1] == 'I' && b[2] == 'F' && b[3] == '8' && (b[4] == '7' || b[4] == '9') && b[5] == 'a'; } private static boolean isPNG(byte[] b) { if (b.length < 8) { return false; } return (b[0] == (byte) 137 && b[1] == (byte) 80 && b[2] == (byte) 78 && b[3] == (byte) 71 && b[4] == (byte) 13 && b[5] == (byte) 10 && b[6] == (byte) 26 && b[7] == (byte) 10); } private static boolean isBMP(byte[] b) { if (b.length < 2) { return false; } return (b[0] == 0x42) && (b[1] == 0x4d); } @SuppressLint("NewApi") public static String getPath(final Context context, final Uri uri) { final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT; // DocumentProvider if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) { // ExternalStorageProvider if (isExternalStorageDocument(uri)) { final String docId = DocumentsContract.getDocumentId(uri); final String[] split = docId.split(":"); final String type = split[0]; if ("primary".equalsIgnoreCase(type)) { return Environment.getExternalStorageDirectory() + "/" + split[1]; } } // DownloadsProvider else if (isDownloadsDocument(uri)) { final String id = DocumentsContract.getDocumentId(uri); final Uri contentUri = ContentUris.withAppendedId( Uri.parse("content://downloads/public_downloads"), Long.valueOf(id)); return getDataColumn(context, contentUri, null, null); } // MediaProvider else if (isMediaDocument(uri)) { final String docId = DocumentsContract.getDocumentId(uri); final String[] split = docId.split(":"); final String type = split[0]; Uri contentUri = null; if ("image".equals(type)) { contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI; } else if ("video".equals(type)) { contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI; } else if ("audio".equals(type)) { contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; } final String selection = "_id=?"; final String[] selectionArgs = new String[] { split[1] }; return getDataColumn(context, contentUri, selection, selectionArgs); } } // MediaStore (and general) else if ("content".equalsIgnoreCase(uri.getScheme())) { // Return the remote address if (isGooglePhotosUri(uri)) return uri.getLastPathSegment(); return getDataColumn(context, uri, null, null); } // File else if ("file".equalsIgnoreCase(uri.getScheme())) { return uri.getPath(); } return null; } /** * Get the value of the data column for this Uri. This is useful for * MediaStore Uris, and other file-based ContentProviders. * * @param context The context. * @param uri The Uri to query. * @param selection (Optional) Filter used in the query. * @param selectionArgs (Optional) Selection arguments used in the query. * @return The value of the _data column, which is typically a file path. */ public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) { Cursor cursor = null; final String column = "_data"; final String[] projection = { column }; try { cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null); if (cursor != null && cursor.moveToFirst()) { final int index = cursor.getColumnIndexOrThrow(column); return cursor.getString(index); } } finally { if (cursor != null) cursor.close(); } return null; } <pre name="code" class="java"> /** * @param uri The Uri to check. * @return Whether the Uri authority is ExternalStorageProvider. */ public static boolean isExternalStorageDocument(Uri uri) { return "com.android.externalstorage.documents".equals(uri.getAuthority()); } /** * @param uri The Uri to check. * @return Whether the Uri authority is DownloadsProvider. */ public static boolean isDownloadsDocument(Uri uri) { return "com.android.providers.downloads.documents".equals(uri.getAuthority()); } /** * @param uri The Uri to check. * @return Whether the Uri authority is MediaProvider. */ public static boolean isMediaDocument(Uri uri) { return "com.android.providers.media.documents".equals(uri.getAuthority()); } /** * @param uri The Uri to check. * @return Whether the Uri authority is Google Photos. */ public static boolean isGooglePhotosUri(Uri uri) { return "com.google.android.apps.photos.content".equals(uri.getAuthority()); } }
public class PhotoOperation { /** * 根據Uri得到真實路徑 * * @param context 上下文 * @param uri 絕對路徑 * @return 真實路徑 */ public String getRealFilePath(final Context context, final Uri uri) { if (null == uri) return null; final String scheme = uri.getScheme(); String data = null; if (scheme == null) data = uri.getPath(); else if (ContentResolver.SCHEME_FILE.equals(scheme)) { data = uri.getPath(); } else if (ContentResolver.SCHEME_CONTENT.equals(scheme)) { Cursor cursor = context.getContentResolver().query(uri, new String[]{MediaStore.Images.ImageColumns.DATA}, null, null, null); if (null != cursor) { if (cursor.moveToFirst()) { int index = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA); if (index > -1) { data = cursor.getString(index); } } cursor.close(); } } return data; } public static Uri cropUri; //需要裁剪的Uri private Context mContext; /** * 裁剪頭像的絕對路徑 */ public Uri getUploadTempFile(Context context, Uri uri) { String storageState = Environment.getExternalStorageState(); if (storageState.equals(Environment.MEDIA_MOUNTED)) { File savedir = new File(StringUtils.IMAGE_SAVE_PATH); if (!savedir.exists()) { savedir.mkdirs(); } } else { // T.showShort(this, "無法儲存上傳的頭像，請檢查SD卡是否掛載"); //彈出提示 // Toast.Long(context, R.string.text_save_photo_failed); return null; } String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss", Locale.CHINA).format(new Date()); String thePath = ImageUtils.getAbsolutePathFromNoStandardUri(uri); // 如果是標準Uri if (StringUtils.isEmpty(thePath)) { thePath = ImageUtils.getAbsoluteImagePath((Activity) context, uri); } String ext = AdvancedFileUtils.getFileFormat(thePath); ext = StringUtils.isEmpty(ext) ? "jpg" : ext; // 照片命名 String cropFileName = "virtual" + StringUtils.USER_ID + "_" + timeStamp + "." + ext; // copyProtraitName = cropFileName; // 裁剪頭像的絕對路徑 // protraitPath = IMAGE_SAVE_PATH + cropFileName; File lImageSaveFile = new File(StringUtils.IMAGE_SAVE_PATH, cropFileName); cropUri = Uri.fromFile(lImageSaveFile); return cropUri; } /** * 拍照儲存的絕對路徑,當點選拍照的時候，不能存在系統預設的路徑，有可能無法訪問 */ public Uri getCameraTempFile() { String storageState = Environment.getExternalStorageState(); if (storageState.equals(Environment.MEDIA_MOUNTED)) { File savedir = new File(StringUtils.IMAGE_SAVE_PATH); if (!savedir.exists()) { savedir.mkdir(); } } else { // Toast.Long(mContext, R.string.text_save_photo_failed); return null; } String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss", Locale.CHINA) .format(new Date()); // 照片命名 String cropFileName = "virtual" + StringUtils.USER_ID + "_" + timeStamp + ".jpg"; // 裁剪頭像的絕對路徑 File lImageSaveFile = new File(StringUtils.IMAGE_SAVE_PATH, cropFileName); Uri tempUri = Uri.fromFile(lImageSaveFile); return tempUri; } /** * 裁剪圖片 * 儲存原圖和剪裁圖 * * @param uri 絕對路徑 * @param requestCode 請求碼 * @param context 上下文 */ private Intent mIntent; public void doCropImage(Uri uri, Context context, int requestCode) { try { mIntent = new Intent("com.android.camera.action.CROP"); // mIntent.setDataAndType(uri, "image/*"); if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) { String url = ImageUtils.getPath(context, uri); mIntent.setDataAndType(Uri.fromFile(new File(url)), "image/*"); } else { mIntent.setDataAndType(uri, "image/*"); } mIntent.putExtra("crop", "true"); mIntent.putExtra("scale", true);// 去黑邊 mIntent.putExtra("scaleUpIfNeeded", true);// 去黑邊 mIntent.putExtra("aspectX", 1); // 設定裁剪的寬、高比例為9：9 mIntent.putExtra("aspectY", 1); mIntent.putExtra("outputX", 300); // outputX，outputY是裁剪的寬、高度 mIntent.putExtra("outputY", 300); getUploadTempFile(context, uri); mIntent.putExtra(MediaStore.EXTRA_OUTPUT, cropUri); mIntent.putExtra("return-data", false); //若為false則表示不返回資料 // mIntent.putExtra(MediaStore.EXTRA_OUTPUT,uri); // mIntent.putExtra("return-data", false); mIntent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString()); mIntent.putExtra("noFaceDetection", true); // 關閉人臉檢測 ((Activity) context).startActivityForResult(mIntent, requestCode); } catch (Exception e) { // Toast.Short(context, "剪裁失敗"); } } public Uri getRealPath(Context context){ String lRealFilePath = getRealFilePath(context, cropUri); //將URL轉成真實的路徑 return cropUri; } public String getRealFilePathString(Context context){ return getRealFilePath(context, cropUri); //將URL轉成真實的路徑 } } return "com.android.providers.media.documents".equals(uri.getAuthority()); } /** * @param uri The Uri to check. * @return Whether the Uri authority is Google Photos. */ public static boolean isGooglePhotosUri(Uri uri) { return "com.google.android.apps.photos.content".equals(uri.getAuthority()); } }
6.StringUtils:字串處理工具
public class StringUtils {
public static String IMAGE_SAVE_PATH = Environment
.getExternalStorageDirectory().getAbsolutePath()
+ "/ZSSX1_picture";
public static boolean isEmpty(String string){
return TextUtils.isEmpty(string);
}
}
最後我們需要一個主函式去實現：
case R.id.tv_action_one:
Log.d("photo","tv_action_one");
startSelectPhotos();
break;
case R.id.tv_action_two:
Log.d("photo","tv_action_two");
startActionCamera();
break; /**
* 照片 請求碼
*/
public final static int CAMERA = 100;
public final static int PICTURE = 101;
public final static int UPLOADPICTURE = 102;
private PhotoOperation mPhotoOperation = new PhotoOperation();
public Uri mCameraTempFileUri;
/**
* 從手機中選擇
*/
private void startSelectPhotos() {
Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// 開啟相簿（方式二）
// Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
// intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("image/*");
startActivityForResult(Intent.createChooser(intent, "選擇圖片"), PICTURE);
}
/**
* 拍照
*/
private void startActionCamera() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// if (mCameraTempFileUri == null) {
mCameraTempFileUri = mPhotoOperation.getCameraTempFile();
intent.putExtra(MediaStore.EXTRA_OUTPUT, mCameraTempFileUri);
startActivityForResult(intent, CAMERA);
}
public static Uri imgUri = null;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != Activity.RESULT_OK) {
return;
}
switch (requestCode) {
case CAMERA:
imgUri = mCameraTempFileUri;
mPhotoOperation.doCropImage(imgUri, this, UPLOADPICTURE);
break;
case PICTURE:
imgUri = data.getData();
mPhotoOperation.doCropImage(imgUri, this, UPLOADPICTURE);
break;
case UPLOADPICTURE:
Log.d("photo","更換頭像");
Uri lUri = mPhotoOperation.getRealPath(this);
Bitmap mBitmap = null;
try {
Bitmap bmp = BitmapFactory.decodeStream(getContentResolver().openInputStream(lUri));
mBitmap = Bitmap.createScaledBitmap(bmp, 100, 100, true);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
mImageView.setImageBitmap(mBitmap);
pictoBig = true;
break;
default:
break;
}
}
最後看看效果：
