关闭对话框可导致活动结束 [英] Dismiss dialog causes activity finish

问题描述

我的PanelActivity包含一个带有项目列表的recyclerView.每个项目都有一个点击事件.单击将打开DetailsActivity.

My PanelActivity contains a recyclerView with a list of items. Each item has a click event. This click opens DetailsActivity.

DetailsActivity具有一个floatActionButton，可打开全屏对话框(我的课程DetailDialogFragment扩展了DialogFragment).

DetailsActivity has a floatingActionButton that opens a full screen dialog (my class DetailDialogFragment extends DialogFragment).

DetailDialogFragment具有一个向上/主页按钮，该按钮处于关闭状态.

DetailDialogFragmenthas an Up/Home button with a dismiss.

问题:如果用户在向上"按钮上单击，该对话框将被关闭，但DetailsActivity也会消失，并且应用返回到PanelActivity.

The problem: If the user performs a click over the Up button, the dialog is dismissed, but also DetailsActivity disappear, and the app returns to the PanelActivity.

可能的原因:在对话框的向上"按钮下面是DetailsActivity的向上"按钮.对话框上方的活动同时在同一位置都具有向上"按钮时，是否可以触发两个单击事件?

Possible reason: Under the Up button of the dialog is the Up button of the DetailsActivity. Is it possible to fire two click events when a dialog is over an activity and both have an Up button on the same place?

显示一些代码.

从PanelActivity中打开DetailsActivity(单击recyclerView中的一项).

Open DetailsActivity from PanelActivity (clicking one item in the recyclerView).

Intent intent = new Intent(context, DetailsActivity.class);
intent.putExtra("headerCode", headerCode.getText());
context.startActivity(intent);

DetailsActivity中的向上按钮.

Up button in DetailsActivity.

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        // Respond to the action bar's Up/Home button
        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;
    }
    return super.onOptionsItemSelected(item);
}

在DetailsActivity中打开全屏对话框.

Open full screen dialog in DetailsActivity.

private void showCreateDetailDialog() {
    FragmentManager fragmentManager = getSupportFragmentManager();
    DetailDialogFragment newFragment = new DetailDialogFragment();

    // The device is smaller, so show the fragment fullscreen
    FragmentTransaction transaction = fragmentManager.beginTransaction();
    // For a little polish, specify a transition animation
    transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    // To make it fullscreen, use the 'content' root view as the container
    // for the fragment, which is always the root view for the activity
    transaction.add(android.R.id.content, newFragment)
            .addToBackStack(null).commit();
}

最后，DetailDialogFragment中的向上按钮.

And finally, Up button in DetailDialogFragment.

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if (id == R.id.save) {
        validateForm();
        return true;
    } else if (id == android.R.id.home) {
        // handle close button click here
        dismiss();
        return true;
    }

    return super.onOptionsItemSelected(item);
}

推荐答案

我尚未对其进行测试，但是我认为问题出在这里，您可以在此处调用dismiss().您可能需要先引用DialogFragment.从技术上来说，我认为您只是在呼叫this.dismiss();，其中 this 等于您正在从事的活动.

I haven't tested it but I think the problem is here, where you call dismiss(). You may need a reference to the DialogFragment first. I think technically you're just calling this.dismiss(); where this equals the Activity you're working in.

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if (id == R.id.save) {
        validateForm();
        return true;
    } else if (id == android.R.id.home) {
        // handle close button click here
        dismiss(); // problem is with this call
        return true;
    }

    return super.onOptionsItemSelected(item);
}

您可以尝试这样的事情:

You could try something like this:

private DetailDialogFragment detailFragment;

private void showCreateDetailDialog() {
    detailFragment = new DetailDialogFragment();
    FragmentManager fragmentManager = getSupportFragmentManager();

    FragmentTransaction transaction = fragmentManager.beginTransaction();
    transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    transaction.add(android.R.id.content, newFragment).addToBackStack(null).commit(); 
}

，现在位于onOptionsItemSelected()中:

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if (id == R.id.save) {
        validateForm();
        return true;
    } else if (id == android.R.id.home) {
        // handle close button click here
        detailFragment.dismiss();
        return true;
    }

    return super.onOptionsItemSelected(item);
}

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