Android 图片获取显示照片拍摄时间

类似图上的右下角日期，就是我们用程序动态画上去的，这个时间显示什么时间当然要根据我们自己的业务需求来定。

以我们的举列，我们的客户要求这个时间显示的是照片拍摄的日期。

这个分为两种情况

1.添加照片时候用相机拍摄的图片，这个当然直接取当时的时间就可以了，具体代码如下：

 //拍照
    private void fromCarema(OnFilishedListener listener) {

        if (hasSdcard()) {
            String path = null;
            if ( tempFile ==null || !tempFile.exists()) {
                listener.onFilish(null);
                return;
            }
            path = tempFile.getAbsolutePath();
            if (TextUtils.isEmpty(path)) {
                listener.onFilish(null);
                return;
            }
            try {
                Bitmap bitmap = BitmapUtils.scaleBitmap(path);

//+++++++++++++++++++画日期操作
                bitmap = BitmapUtils.drawDate2Bitmap(bitmap);
                File file = new File(path);
                if (file.exists()) {
                    file.delete();
                }
                path = BitmapUtils.saveBitmap(bitmap);
                listener.onFilish(path);
            } catch (Exception e) {
                e.printStackTrace();
                Log.e("保存图片", "图片保存失败");
                listener.onFilish(null);
            }

        } else {
            if (fragment != null) {
                Toast.makeText(fragment.getActivity(), "未找到存储卡，无法存储照片！", Toast.LENGTH_SHORT)
                        .show();
            } else {
                Toast.makeText(activity, "未找到存储卡，无法存储照片！", Toast.LENGTH_SHORT).show();
            }
            listener.onFilish(null);
        }
    }

public static Bitmap drawDate2Bitmap(Bitmap bitmap) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.CHINA);
		String date = sdf.format(new Date());
		Bitmap.Config bitmapConfig = bitmap.getConfig();
		// set default bitmap config if none
		if (bitmapConfig == null) {
			bitmapConfig = Bitmap.Config.ARGB_8888;
		}
		bitmap = bitmap.copy(bitmapConfig, true); // 获取可改变的位图
		Canvas canvas = new Canvas(bitmap);
		Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
		// text color - #3D3D3D
		paint.setColor(Color.RED);
		// text size in pixels
		paint.setTextSize(30);
		// text shadow
		// paint.setShadowLayer(1f, 0f, 1f, Color.WHITE);
		Rect bounds = new Rect();
		paint.getTextBounds(date, 0, date.length(), bounds);
		int x = (bitmap.getWidth() - bounds.width());
		canvas.drawText(date, x - 10, bitmap.getHeight() - 10, paint);
		canvas.save();
		return bitmap;
	}

2.如果是从图库选择的照片，我们需要先获取照片拍摄日期，然后再将日期画上去，代码如下：

//从图库选择
    private void fromGallery(Intent data, OnFilishedListener listener) {
        Uri uri = data.getData();
        String[] filePathColumn = {MediaStore.Images.Media.DATA , MediaStore.Images.Media.DATE_TAKEN};
        Cursor cursor = null;
        if (uri == null)
            return;

        if (uri.getScheme().contains("file")) {
            Long fileTime = (new File(uri.getPath())).lastModified();
            String dateTime = TimeUtil.longToDate1(fileTime);
            Log.i("wtt","照片拍摄日期为dateTime: " + dateTime);
            saveSelectPic( dateTime , uri.getPath(), listener);

        } else if (uri.getScheme().contains("content")) {
            if (fragment != null) {
                cursor = fragment.getActivity().getContentResolver()
                        .query(uri, filePathColumn, null, null, null);
            } else {
                cursor = activity.getContentResolver().
                        query(uri,filePathColumn, null, null, null);
            }
            if (cursor.moveToFirst()) {
                int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                String picturePath = cursor.getString(columnIndex);

                int dateIndex = cursor.getColumnIndexOrThrow(filePathColumn[1]);
                String date = cursor.getString(dateIndex);
                if (TextUtils.isEmpty(date)) {
                    date = TimeUtil.getStringDate1();
                }else{
                    date = TimeUtil.longToDate1(Long.parseLong(date));
                }
              
                cursor.close();
                saveSelectPic(date , picturePath, listener);
            } else {
                listener.onFilish(null);
            }
        }
    }

 /**
     * 保存圖片
     *
     * @param picPath
     * @param listener
     */
    private void saveSelectPic(String date, String picPath, OnFilishedListener listener) {
        if (TextUtils.isEmpty(picPath)) {
            listener.onFilish(null);
            return;
        }
        Bitmap bitmap = BitmapUtils.scaleBitmap(picPath);
        bitmap = BitmapUtils.drawDate2Bitmap( date , bitmap);
        try {
            picPath = BitmapUtils.saveBitmap(bitmap);
            listener.onFilish(picPath);
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("保存图片", "图片保存失败");
            listener.onFilish(null);
        }
    }

public static Bitmap drawDate2Bitmap(String date , Bitmap bitmap) {
		Bitmap.Config bitmapConfig = bitmap.getConfig();
		// set default bitmap config if none
		if (bitmapConfig == null) {
			bitmapConfig = Bitmap.Config.ARGB_8888;
		}
		bitmap = bitmap.copy(bitmapConfig, true); // 获取可改变的位图
		Canvas canvas = new Canvas(bitmap);
		Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
		// text color - #3D3D3D
		paint.setColor(Color.RED);
		// text size in pixels
		paint.setTextSize(30);
		// text shadow
		// paint.setShadowLayer(1f, 0f, 1f, Color.WHITE);
		Rect bounds = new Rect();
		paint.getTextBounds(date, 0, date.length(), bounds);
		int x = (bitmap.getWidth() - bounds.width());
		canvas.drawText(date, x - 10, bitmap.getHeight() - 10, paint);
		canvas.save();
		return bitmap;
	}

基本实现方式都在代码里面了，大家如果还有其他问题欢迎加入我的qq群讨论交流：开发一群：454430053 开发二群：537532956

Android 图片获取显示照片拍摄时间

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