Android 获取uri的正确文件路径的办法

Android获取Uri的正确文件路径的办法

public String getImagePathFromUri(final Context context, Uri picUri) {
        // 选择的图片路径
        String selectPicPath = null;
        Uri selectPicUri = picUri;

        final String scheme = picUri.getScheme();
        if (picUri != null && scheme != null) {
            if (scheme.equals(ContentResolver.SCHEME_CONTENT)) {
                // content://开头的uri
                Cursor cursor = context.getContentResolver().query(picUri, null, null, null, null);
                if (cursor != null && cursor.moveToFirst()) {
                    int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                    // 取出文件路径
                    selectPicPath = cursor.getString(columnIndex);

                    // Android 4.1 更改了SD的目录，sdcard映射到/storage/sdcard0
                    if (!selectPicPath.startsWith("/storage") && !selectPicPath.startsWith("/mnt")) {
                        // 检查是否有"/mnt"前缀
                        selectPicPath = "/mnt" + selectPicPath;
                    }
                    //关闭游标
                    cursor.close();
                }
            } else if (scheme.equals(ContentResolver.SCHEME_FILE)) {// file:///开头的uri
                // 替换file://
                selectPicPath = selectPicUri.toString().replace("file://", "");
                int index = selectPicPath.indexOf("/sdcard");
                selectPicPath = index == -1 ? selectPicPath : selectPicPath.substring(index);
                if (!selectPicPath.startsWith("/mnt")) {
                    // 加上"/mnt"头
                    selectPicPath = "/mnt" + selectPicPath;
                }
            }
        }
        return selectPicPath;
    }