我在我的Android 4.0.3应用程序中有一个Action Bar。每个选项卡都有一些按钮(一种继续)会更改片段但不更改选项卡。我按照官方开发人员指南上的http://developer.android.com,但它没有起作用。
这就是我想要的:
使用Action Bar Sherlock可以实现这种交互吗?
这就是我想要的:
![enter image description here](https://istack.dev59.com/JeImt.webp)
我相信你可以通过适当地重写选项卡回调类方法onTabSelected(Tab tab, FragmentTransaction ft)来指定所需的选项卡行为。它应该看起来像:
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// Check if the fragment is already initialized
if (mFragment == null) {
// If not, instantiate and add it to the activity
mFragment = Fragment.instantiate(mActivity, mClass.getName());
ft.add(R.id.realtabcontent, mFragment, mTag);
} else {
//Here we look if current fragment aren't default fragment for this tab
//Remember that detached fragments are still managed by system, so manage it the way u need
// If it exists, simply attach it in order to show it
// ft.attach(mFragment);
if (mFragment.getTag().equals("defaultFragment"))
ft.show(mFragment);
else {
ft.detach(mFragment);
mFragment = fragmentManager.findFragmentByTag("defaultFragment");
if (mFragment == null)
mFragment = Fragment.instantiate(mActivity, mClass.getName());
ft.add(R.id.realtabcontent, mFragment, "defaultFragment");
}
}
}