问题描述
我有一个操作栏后退按钮它使一个片段。
code:
@覆盖
公共无效onAttach(活动活动){
super.onAttach(活动);
setHasOptionsMenu(真正的);
动作条=((MainActivity)getActivity())getSupportActionBar()。
actionBar.setDisplayHomeAsUpEnabled(真正的);
actionBar.setCustomView(R.layout.custom_action_bar);
actionBar.setDisplayShowTitleEnabled(假);
actionBar.setDisplayShowCustomEnabled(真正的);
}
@覆盖
公共查看onCreateView(LayoutInflater充气,容器的ViewGroup,
捆绑savedInstanceState){
mInflater =(LayoutInflater)getActivity()getSystemService(Context.LAYOUT_INFLATER_SERVICE)。
查看查看= mInflater.inflate(R.layout.fragment_layout,集装箱,假);
返回查看;
}
在上面的code actionBar.setDisplayHomeAsUpEnabled(真);
允许在操作栏上的后退按钮,但怎么才能检测到点击它? P>
我已经研究过很多例子,并试图以下,但仍然没有工作:
在片段:
@覆盖
公共布尔onOptionsItemSelected(菜单项项){
开关(item.getItemId()){
案例android.R.id.home:
Toast.makeText(getActivity(),返回,Toast.LENGTH_LONG).show();
打破;
默认:
打破;
}
返回super.onOptionsItemSelected(项目);
}
也被显示在片段中的后退按钮是黑色的,我需要在白色的颜色或自定义颜色我怎样才能改变这种状况呢?
我面临同样的问题,后来我把这个code活性内部,从碎片里的后退按钮的工作:
@覆盖
公共布尔onOptionsItemSelected(菜单项项){
开关(item.getItemId()){
案例android.R.id.home:
Toast.makeText(getActivity(),返回,Toast.LENGTH_LONG).show();
打破;
默认:
打破;
}
返回super.onOptionsItemSelected(项目);
}
I have a Fragment with action bar back button enabled in it.
Code :
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
setHasOptionsMenu(true);
actionBar = ((MainActivity)getActivity()).getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setCustomView(R.layout.custom_action_bar);
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setDisplayShowCustomEnabled(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mInflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = mInflater.inflate(R.layout.fragment_layout, container, false);
return view;
}
In the above code actionBar.setDisplayHomeAsUpEnabled(true);
enables the back button in the Action Bar but how can we detect the click on it ?
I have looked into many examples and tried the below but still not working :
In Fragment :
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Toast.makeText(getActivity(), "Back", Toast.LENGTH_LONG).show();
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
Also the back button which is displayed in the fragment is of Black color i need that in White color or with custom color how can i change that as well ?
I was facing the same problem, but then I put this code inside the activity and the back button worked from inside the fragment:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Toast.makeText(getActivity(), "Back", Toast.LENGTH_LONG).show();
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
这篇关于操作栏检测后退按钮点击的片段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!