Fragment StartActivityForResult

最新推荐文章于 2023-06-12 10:48:23 发布

原创最新推荐文章于 2023-06-12 10:48:23 发布 · 872 阅读

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本文介绍了在Android开发中如何在Activity和Fragment之间正确传递 onActivityResult 的结果。通过重写方法并利用 getChildFragmentManager 和 getSupportFragmentManager 进行递归处理，确保了所有子Fragment能够接收到结果。此外，还提供了解决DialogFragment及Fragment嵌套场景下的处理方式。

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1.在BaseActivity中重写为了避免重复最好用不同的requestCode

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    List<Fragment> fragments = getSupportFragmentManager().getFragments();
    if (fragments != null) {
        for (Fragment fragment : fragments) {
            if (null != fragment) {
                fragment.onActivityResult(requestCode, resultCode, data);
            }
        }
    }

}

2.在BaseFragment中重写

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    List<Fragment> fragments = getChildFragmentManager().getFragments();
    if (fragments != null) {
        for (Fragment fragment : fragments) {
            if (null != fragment) {
                fragment.onActivityResult(requestCode, resultCode, data);
            }
        }
    }
}

3.如果是dialogFragment 取决于父容器

protected void selectPhotoFromGallery() {
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.setType("image/*");
    Fragment parentFragment = getParentFragment();
    if (null != parentFragment) {
        parentFragment.startActivityForResult(intent, CAMERA_SELECT);
    } else {
        startActivityForResult(intent, CAMERA_SELECT);
    }
}

4.如果是fragment in fragment,不要用getChildFragment

getChildFragmentManager()-->getFragmentManager()
        .beginTransaction()
        .replace(R.id.profile_content, fragment)
        .commit();

调用时不要用getActivity.startActivity...

protected void selectPhotoFromGallery() {
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.setType("image/*");
    startActivityForResult(intent, CAMERA_SELECT);
}