如何在Android中获取通过多部分发送到服务器的图像的完整路径

在我的应用程序中，用户可以从相机拍摄照片，或从多媒体资料中选择并裁剪照片以发送到服务器。所以没有问题。， 问题是当用户从图库中选择图片时

从相机裁剪的URI路径：/mnt/sdcard/avatar_14349583; 40804.jpg
从存储裁剪的URI路径：/external/images/media/19

错误：

IOException:/external/images/media/19:打开失败：enoint（无此项） 文件或目录）

---

您应该从URI获取路径。使用以下功能：

private String getRealPathFromURI(Uri contentURI) {
        //Log.e("in","conversion"+contentURI.getPath());
       String path;
        Cursor cursor = getContentResolver()
                   .query(contentURI, null, null, null, null); 
        if (cursor == null) 
            path=contentURI.getPath();

        else {
            cursor.moveToFirst(); 
            int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA); 
            path=cursor.getString(idx);

        }
        if(cursor!=null)
            cursor.close();
        return path;
    }

---

截取相机的URI路径：/mnt/sdcard/avatar_1434958340804.jpg

从存储裁剪的URI路径：/external/images/media/19

@SuppressLint("NewApi")
public static String getRealPathFromURI_API19(Context context, Uri uri){
    String filePath = "";
    String wholeID = DocumentsContract.getDocumentId(uri);

    // Split at colon, use second item in the array
    String id = wholeID.split(":")[1];

    String[] column = { MediaStore.Images.Media.DATA };

    // where id is equal to
    String sel = MediaStore.Images.Media._ID + "=?";

    Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
            column, sel, new String[]{ id }, null);

    int columnIndex = 0;
    if (cursor != null) {
        columnIndex = cursor.getColumnIndex(column[0]);
    }

    if (cursor != null && cursor.moveToFirst()) {
        filePath = cursor.getString(columnIndex);
    }
    if (cursor != null) {
        cursor.close();
    }
    Log.e("GGGGG FilePath",filePath);
    return filePath;
}

在API 19之后，内容URI发生了变化

content://com.android.providers.media.documents/document/image%3A151323

及

/storage/3437-6630/Pics/IMG_5737.JPG

在API19之前调用gallery Intent将导致gallery。但是在API19之后将导致调用图像。您可以从这里进入Gallery、外部存储或Google drive。因此有机会获得运行时异常

MainActivity.java

在RealPathUtil.java中

getRealPathFromURI（）

getRealPathFromURI\u API19

@SuppressLint("NewApi")
public static String getRealPathFromURI_API19(Context context, Uri uri){
    String filePath = "";
    String wholeID = DocumentsContract.getDocumentId(uri);

    // Split at colon, use second item in the array
    String id = wholeID.split(":")[1];

    String[] column = { MediaStore.Images.Media.DATA };

    // where id is equal to
    String sel = MediaStore.Images.Media._ID + "=?";

    Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
            column, sel, new String[]{ id }, null);

    int columnIndex = 0;
    if (cursor != null) {
        columnIndex = cursor.getColumnIndex(column[0]);
    }

    if (cursor != null && cursor.moveToFirst()) {
        filePath = cursor.getString(columnIndex);
    }
    if (cursor != null) {
        cursor.close();
    }
    Log.e("GGGGG FilePath",filePath);
    return filePath;
}

---

/external目录是错误的。为什么您认为应该是URI？

MediaStore.Images.Media.DATA

被删除了。现在这已经不起作用了

@SuppressLint("NewApi")
public static String getRealPathFromURI_API19(Context context, Uri uri){
    String filePath = "";
    String wholeID = DocumentsContract.getDocumentId(uri);

    // Split at colon, use second item in the array
    String id = wholeID.split(":")[1];

    String[] column = { MediaStore.Images.Media.DATA };

    // where id is equal to
    String sel = MediaStore.Images.Media._ID + "=?";

    Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
            column, sel, new String[]{ id }, null);

    int columnIndex = 0;
    if (cursor != null) {
        columnIndex = cursor.getColumnIndex(column[0]);
    }

    if (cursor != null && cursor.moveToFirst()) {
        filePath = cursor.getString(columnIndex);
    }
    if (cursor != null) {
        cursor.close();
    }
    Log.e("GGGGG FilePath",filePath);
    return filePath;
}