从startActivityForResult返回后，片段消失了 [英] Fragment disappear after coming back from startActivityForResult

问题描述

我有一个奇怪的问题。

我在我的代码中使用了嵌套片段，（4级）

i use nested fragment in my code,( 4 level )

首页->服务->服务详细信息->上传

Home -> Services -> ServiceDetails -> Upload

在最后一个片段（上传片段）中，我想从图库或相机中选择图像，所以我写了以下内容选择图像的代码：

in the last fragment ( Upload Fragment ) i want to choose image from the gallery or the camera so i wrote the following code to pick the image :

switch (which) {
    case galleryItem:
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(
                Intent.createChooser(intent, "Select Album",
                Home.GALLERY_REQUEST);
        break;

    case cameraItem:
        Intent cameraIntent = new Intent(
                android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(cameraIntent,
                Home.CAMERA_REQUEST);
        break;

一切正常，
i可以从 onActivityResult ，其代码如下：

and every thing is ok. i can get URI from the selected picture in onActivityResult of my fragment with the following code:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == Activity.RESULT_OK) {
        if (requestCode == Home.GALLERY_REQUEST) {
            Uri selectedImageUri = data.getData();

        } else if (requestCode == Home.CAMERA_REQUEST) {
            Bitmap photo = (Bitmap) data.getExtras().get("data");
            Uri cameraUri = getImageUri(
                    getActivity().getApplicationContext(), photo);

        }
    }
}

问题

如果我打开我的相册并滚动（查看所有缩略图），然后选择图片 onActivityResult 在片段中调用，但片段不再可见，并且 Home 片段（第一个片段）在我的应用程序中可见。
，但如果我打开相册（通过startActivityForResult）并立即选择照片，则一切正常。

if i open my album and scroll ( see all thumbnail ) in that, after selecting my picture onActivityResult called in the fragment but fragment is not visible any more and Home fragment ( first fragment ) be visible in my app. but if i open album ( by startActivityForResult ) and immediately select photo, all thing is going ok.

我对相机没有任何问题。

i don’t any problem with camera.

我进行了很多搜索，但找不到任何有用的数据，如果您想查看代码的任何部分告诉我，则
。
我只丢了最后一个片段就没有崩溃。
预先感谢。

i searched a lot but don’t find any helpful data, if you want to see any part of my code tell me. i don’t get any crash just i lose my last fragment. thanks in advance.

推荐答案

我的问题已通过更改

 Intent intent = new Intent();
 intent.setType("image/*");
 intent.setAction(Intent.ACTION_GET_CONTENT);
 startActivityForResult(
        Intent.createChooser(intent, "Select Album",
        Home.GALLERY_REQUEST);

至：

Intent intent = new Intent(Intent.ACTION_PICK,
                        android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, Home.GALLERY_REQUEST);

我不知道为什么，但是如果有人知道通过 Intent.createChooser 启动意图和通常打电话告诉我之间有什么区别

i don't know why but if any one know what is different between starting intent by Intent.createChooser and normally call tell me, thanks

这篇关于从startActivityForResult返回后，片段消失了的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！