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현재 조각과 viewPager가있는 작은 샘플 앱을 개발하고 있습니다. viewPager는 3 페이지를 보여줍니다. 각 페이지에서 동일한 유형의 프래그먼트를 인스턴스화합니다. 프래그먼트에는 textView와 버튼이 있습니다. 버튼을 클릭하면 현재 조각을 다른 것으로 대체하려고합니다. 이제 내 문제는 어떤 버튼을 눌러도 페이지 1의 조각 만 대체된다는 것입니다. 난 내 pageAdapter 클래스에서 뭘 해야할지 모르겠지만 그것은 같은 조각과 레이아웃을 사용하여 할 것 같아요. 내 pageAdapter가 올바른 페이지를 업데이트하는지 확인해야한다고 생각하지만 어떻게해야합니까?viewPager에서 같은 조각을 사용하는 방법?
그 이유를 더 잘 이해하려면 3 노드 노드에서 json 문자열을 받고 그 각각을 내 viewPager의 페이지로 사용하고 싶습니다.
누군가 이러한 동작에 대해 간단하고 쉬운 예를 보여줄 수 있습니까? 나는 그것의 기본적인 접근법을 생각한다. 그래서 그렇게 어렵지는 않다.
public class FragmentPagerSupport extends FragmentActivity {
static final int NUM_ITEMS = 4;
MyAdapter mAdapter;
ViewPager mPager;
@Override
public void onBackPressed() {
FragmentManager fm = getFragmentManager();
if (fm.getBackStackEntryCount() > 0) {
fm.popBackStack();
} else {
super.onBackPressed();
}
}
public MyAdapter getmAdapter() {
return mAdapter;
}
public ViewPager getmPager() {
return mPager;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_pager);
mAdapter = new MyAdapter(getFragmentManager(), this);
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setOffscreenPageLimit(NUM_ITEMS + 2);
mPager.setAdapter(mAdapter);
Button button = (Button) findViewById(R.id.goto_first);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mPager.setCurrentItem(0);
}
});
button = (Button) findViewById(R.id.goto_last);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mPager.setCurrentItem(NUM_ITEMS - 1);
}
});
}
}
MyAdapter :
public MyAdapter(FragmentManager fm, FragmentPagerSupport fragmentPagerSupport) {
super(fm);
this.fragmentPagerSupport = fragmentPagerSupport;
}
@Override
public int getCount() {
return NUM_ITEMS;
}
@Override
public Fragment getItem(int position) {
Fragment newInstance = null;
switch (position) {
case 0:
newInstance = frag1.newInstance(position);
break;
case 1:
newInstance = frag1.newInstance(position);
break;
case 2:
newInstance = frag2.newInstance(position);
break;
case 3:
newInstance = frag2.newInstance(position);
break;
}
return newInstance;
}
Frag1 & Frag2
는 -------- 편집 --------- 여기
코드입니다 & ListItemFrag :
public static class frag1 extends ListFragment {
int mNum;
static frag1 newInstance(int num) {
frag1 f = new frag1();
Supply num input as an argument.
Bundle args = new Bundle();
args.putInt("num", num);
f.setArguments(args);
return f;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mNum = getArguments() != null ? getArguments().getInt("num") : 1;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_pager_list, container, false);
v.setId(mNum);
View tv = v.findViewById(R.id.text);
((TextView) tv).setText("Fragment #" + mNum);
return v;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
String[] cheeses = { "Edamer", "Gauda", "Cheddar", "Mozarella", "Maasdamer" };
setListAdapter(new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, cheeses));
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
Log.i("FragmentList", "Item clicked: " + id);
String itemName = (String) l.getItemAtPosition(position);
Fragment listItemFragment = ListItemFragment.newInstance(itemName);
FragmentTransaction trans = getActivity().getFragmentManager().beginTransaction();
trans.replace(R.id.root, listItemFragment, listItemFragment.getClass().getName() + "_" + mNum);
trans.addToBackStack(itemName);
trans.commit();
}
}
public static class frag2 extends ListFragment {
int mNum;
static frag2 newInstance(int num) {
frag2 f = new frag2();
Bundle args = new Bundle();
args.putInt("num", num);
f.setArguments(args);
return f;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mNum = getArguments() != null ? getArguments().getInt("num") : 1;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_pager_list, container, false);
v.setId(mNum);
View tv = v.findViewById(R.id.text);
((TextView) tv).setText("Fragment #" + mNum);
return v;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
String[] cheeses = { "Edamer", "Gauda", "Cheddar", "Mozarella", "Maasdamer" };
setListAdapter(new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, cheeses));
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
Log.i("FragmentList", "Item clicked: " + id);
String itemName = (String) l.getItemAtPosition(position);
Fragment listItemFragment = ListItemFragment.newInstance(itemName);
FragmentTransaction trans = getActivity().getFragmentManager().beginTransaction();
trans.replace(R.id.root, listItemFragment, listItemFragment.getClass().getName() + "_" + mNum);
trans.addToBackStack(itemName);
trans.commit();
}
}
public static class ListItemFragment extends Fragment {
String itemName;
static ListItemFragment newInstance(String itemName) {
ListItemFragment i = new ListItemFragment();
Bundle args = new Bundle();
args.putString("text", itemName);
i.setArguments(args);
return i;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
itemName = getArguments() != null ? getArguments().getString("text") : "NULL";
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_item, container, false);
View tv = v.findViewById(R.id.textView1);
((TextView) tv).setText("Cheese: " + itemName + " selected!");
return v;
}
}
호출기 레이아웃 :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:padding="4dip"
android:gravity="center_horizontal"
android:layout_width="match_parent" android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="1">
</android.support.v4.view.ViewPager>
<LinearLayout android:orientation="horizontal"
android:gravity="center" android:measureWithLargestChild="true"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:layout_weight="0">
<Button
android:id="@+id/goto_first"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="first" />
<Button android:id="@+id/goto_last"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="last">
</Button>
</LinearLayout>
Frag1 레이아웃 :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#99EE11"
android:id="@+id/test">
<TextView android:id="@+id/text"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/hello_world"/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1"
android:id="@+id/root" >
<ListView android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:drawSelectorOnTop="false"/>
</FrameLayout>
Frag2 레이아웃 :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#99EE11"
android:id="@+id/test2">
<TextView android:id="@+id/text"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/hello_world"/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1"
android:id="@+id/root2" >
<ListView android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:drawSelectorOnTop="false"/>
</FrameLayout>
ListItemFrag 레이아웃 :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ll"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="230dp"
android:background="#AA33EE"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
http://developer.android.com/intl/ru/training/animation/screen-slide.html –
http://www.androidhive.info/2013/10/android-tab-layout-with- swipeable-views-1/ – ASP
여기에 코드를 올리면 도움이 될 것입니다. – arco444