fragment

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fragment.zip

I consist 3 fragments and 1 activity.

First fragment is image page.

Second fragment is button page.

Third  fragment is web page.

And activity has empty layout and 2 button for moving page.

This is activity.

Fragment add to empty layout.


This is image fragment.

This is button fragment.

This is web fragment.

mainActivity.java

mainActivity.java

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void switch_fragment(int state){     switch (state){     case image_state:         ft = getFragmentManager().beginTransaction();         ft.replace(R.id.fraglayout, image, imageFrag);         //ft.addToBackStack(null);                     ft.commit();         btnLeft.setText("button");         btnRight.setText("web");         frag_state = 1;         break;     case button_state:         ft = getFragmentManager().beginTransaction();         ft.replace(R.id.fraglayout, button, buttonFrag);         //ft.addToBackStack(null);                     ft.commit();         btnLeft.setText("image");         btnRight.setText("web");         frag_state = 2;         break;     case web_state:         ft = getFragmentManager().beginTransaction();         ft.replace(R.id.fraglayout, web, webFrag);         //ft.addToBackStack(null);                     ft.commit();         btnLeft.setText("image");         btnRight.setText("button");         frag_state = 3;         break;     default:         break;     } }

This is switching fragment.

Line 5~8 : changing fragment.

If you active line 7, possible to using back state.

buttonFragment.java

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public class buttonFragment extends Fragment implements OnClickListener{       Button btn;     View view;     @Override         public View onCreateView(LayoutInflater inflater, ViewGroup container,         Bundle savedInstanceState) {             view = inflater.inflate(R.layout.button_frag, container, false);             init();               return view;         }     private void init(){         btn = (Button)view.findViewById(R.id.btn);         btn.setOnClickListener(this);       }     @Override         public void onClick(View v) {             switch (v.getId()){             case R.id.btn:                 Toast.makeText(getActivity(), "hi welcome to button fragment", Toast.LENGTH_SHORT).show();                 break;             }           } }

Line 14: using view for "findViewById" .

Line 22: using getActivity() instead of context.