Android 中Fragment使用
public
class
MainActivity
extends
Activity {
public
static
String[] array = {
"item1,"
,
"item2"
,
"item3"
,
"item4"
,
"item5"
,
"item6"
,
"item7"
,
"item8"
};
@Override
protected
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public
static
class
FirstFragment
extends
ListFragment
{
boolean
mDualPane;
int
mCurCheckPosition =
0
;
@Override
public
void
onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super
.onCreate(savedInstanceState);
System.out.println(
"Fragment-->onCreate"
);
}
@Override
public
View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
System.out.println(
"Fragment-->onCreateView"
);
return
super
.onCreateView(inflater, container, savedInstanceState);
}
@Override
public
void
onPause() {
// TODO Auto-generated method stub
super
.onPause();
System.out.println(
"Fragment-->onPause"
);
}
@Override
public
void
onStop() {
// TODO Auto-generated method stub
super
.onStop();
System.out.println(
"Fragment-->onStop"
);
}
@Override
public
void
onAttach(Activity activity) {
// TODO Auto-generated method stub
super
.onAttach(activity);
System.out.println(
"Fragment-->onAttach"
);
}
@Override
public
void
onStart() {
// TODO Auto-generated method stub
super
.onStart();
System.out.println(
"Fragment-->onStart"
);
}
@Override
public
void
onResume() {
// TODO Auto-generated method stub
super
.onResume();
System.out.println(
"Fragment-->onResume"
);
}
@Override
public
void
onDestroy() {
// TODO Auto-generated method stub
super
.onDestroy();
System.out.println(
"Fragment-->onDestroy"
);
}
@Override
public
void
onActivityCreated(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super
.onActivityCreated(savedInstanceState);
System.out.println(
"Fragment-->onActivityCreted"
);
setListAdapter(
new
ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, array));
View detailsFrame = getActivity().findViewById(R.id.right_frame);
mDualPane = detailsFrame !=
null
&& detailsFrame.getVisibility() == View.VISIBLE;
if
(savedInstanceState !=
null
) {
mCurCheckPosition = savedInstanceState.getInt(
"curChoice"
,
0
);
}
if
(mDualPane) {
getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
showDetails(mCurCheckPosition);
}
}
@Override
public
void
onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super
.onSaveInstanceState(outState);
outState.putInt(
"curChoice"
, mCurCheckPosition);
}
@Override
public
void
onListItemClick(ListView l, View v,
int
position,
long
id) {
// TODO Auto-generated method stub
super
.onListItemClick(l, v, position, id);
showDetails(position);
}
void
showDetails(
int
index) {
mCurCheckPosition = index;
if
(mDualPane) {
getListView().setItemChecked(index,
true
);
RightFragment details = (RightFragment) getFragmentManager()
.findFragmentById(R.id.right_frame);
if
(details ==
null
|| details.getShownIndex() != index) {
details = RightFragment.newInstance(mCurCheckPosition);
FragmentTransaction ft = getFragmentManager()
.beginTransaction();
ft.replace(R.id.right_frame, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
}
else
{
new
AlertDialog.Builder(getActivity()).setTitle(
android.R.string.dialog_alert_title).setMessage(
array[index]).setPositiveButton(android.R.string.ok,
null
).show();
}
}
}
public
static
class
RightFragment
extends
Fragment {
@Override
public
void
onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super
.onCreate(savedInstanceState);
setHasOptionsMenu(
true
);
}
public
static
RightFragment newInstance(
int
index) {
RightFragment details =
new
RightFragment();
Bundle args =
new
Bundle();
args.putInt(
"index"
, index);
details.setArguments(args);
return
details;
}
public
int
getShownIndex() {
return
getArguments().getInt(
"index"
,
0
);
}
@Override
public
View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
if
(container ==
null
)
return
null
;
ScrollView scroller =
new
ScrollView(getActivity());
TextView text =
new
TextView(getActivity());
int
padding = (
int
) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP,
4
, getActivity()
.getResources().getDisplayMetrics());
text.setPadding(padding, padding, padding, padding);
scroller.addView(text);
text.setText(array[getShownIndex()]);
return
scroller;
}
@Override
public
void
onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// TODO Auto-generated method stub
super
.onCreateOptionsMenu(menu, inflater);
menu.add(
"Menu 1a"
).setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
menu.add(
"Menu 1b"
).setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
}
@Override
public
boolean
onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
Toast.makeText(getActivity(),
"index is"
+getShownIndex()+
" && menu text is "
+item.getTitle(),
1000
).show();
return
super
.onOptionsItemSelected(item);
}
}
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本文转自Work Hard Work Smart博客园博客，原文链接：http://www.cnblogs.com/linlf03/p/2966087.html，如需转载请自行联系原作者
