how to get id in different layout

i have id "@+id/call" in single_item.xml when i use findVewById it (the layout 开发者_C百科setcontextview(R.layout.main)) .the app crash .how to fix the error

If you want to access a view in another layout (not the active layout), then you can inflate the layout you want to use and access it that way.

Example:

View inflatedView = getLayoutInflater().inflate(R.layout.other_layout, null);
TextView text = (TextView) inflatedView.findViewById(R.id.text_view);
text.setText("Hello!");

More information about inflating layouts can be found here.

You are trying to find a View (R.id.call) that is declared in R.layout.single_item in the layour R.layout.main, so I guess it is throwing a Null Pointer Exception.

You should either declare your "@+id/call" element in your main.xml file, or set the context view to R.layout.single_item

The simple way to fetch id from a view is:

String id = getResources().getResourceEntryName(view.getId());

If you want to get the id in the fragment use the following method. replace the return statement with view like this.

 View view= inflater.inflate(R.layout.fragment_left, container, false);
 img=view.findViewById(R.id.image);
 return view;

call all the methods before you return the view.

View parent = (View)view.getParent();
??? = (???)parent.findViewById(R.id.call);

try this. hope it help