单击按钮时从活动中删除片段? [英] Remove fragment from activity when clicking button?

问题描述

当前，我的主要活动有一个描述字段，当用户单击描述时会打开一个片段.在片段上有一个文本字段和一个按钮，当我单击该按钮时，我想关闭片段并返回到我的活动.

Currently, my main activity has a description field which opens a fragment when the user clicks on the description. On the fragment there is a text field and a button, when I click the button, I want to close the fragment and go back to my activity.

我该如何实现?

我已经在片段中添加了onClickListener来捕获对按钮的单击.吐司消息被打印，但是片段没有被移除/关闭.

I have added an onClickListener to my fragment to capture the click on the button. The toast message gets printed, but the fragment is not removed/closed.

descDismiss.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(getContext(), "Dismissed", Toast.LENGTH_LONG).show();

                getActivity().getFragmentManager().popBackStackImmediate();
            }
        });

我在片段的onCreateView中有onClickListener.这是正确的吗?

I have the onClickListener in the onCreateView of the fragment. Is this correct?

提前谢谢！

我正在添加这样的片段:

I am adding my fragment like this:

((MainActivity)context).getSupportFragmentManager().beginTransaction()
                        .add(R.id.fragment_container, frag).commit();

推荐答案

首先尝试将片段像这样添加到Backstack中

try this first add the fragment to backstack like this

FragmentManager fragmentManager = getFragmentManager();
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    fragmentTransaction.replace(..............);
    fragmentTransaction.addToBackStack(null);
    fragmentTransaction.commit(); 

然后像这样删除片段:-

Then remove the fragment like this:-

FragmentManager fm = getActivity().getSupportFragmentManager();
      if(fm.getBackStackEntryCount()>0) {
      fm.popBackStack();
}

删除所有碎片

FragmentManager fm = getActivity().getSupportFragmentManager();
      for (int i = 0; i < fm.getBackStackEntryCount(); ++i) {
      fm.popBackStack();
}

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