大佬教程收集整理的这篇文章主要介绍了在Android中调用片段内的函数，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
这是我的代码,
片段1 =>
public class Fragment1 extends Fragment{ public static String @L_772_10@url="http://www.abcd.com/en/RSS@L_772_10@s/1_2_3_5/latest/RSS.xml"; static String URL = ""; static final String KEY_HEAD = "item"; // parent node static final String KEY_DATE = "pubDate"; public static String headflag=""; int f=0; GridView list; HeadlinesAdapter adapter; private TextView mmessageView; private Button mClearButton; @Override public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceStatE) { View v = inflater.inflate(R.layout.first_fragment,container,falsE); return v; } @Override public void onViewCreated(View view,Bundle savedInstanceStatE) { super.onViewCreated(view,savedInstanceStatE); function1();//here I am calling function1 populate_listview(); } public void populate_listview() { URL="http://www.abcd.com/en/RSS@L_772_10@s/1_2_3_5/latest/RSS.xml"; ArrayList<HashMap<String,String>> newsList = new ArrayList<HashMap<String,String>>(); XMLParser parser = new XMLParser(); String xml = parser.getXmlFromUrl(URL); Document doc = parser.getDomElement(xml); NodeList nl = doc.getElementsByTagName(KEY_HEAD); NodeList itemLst = doc.getElementsByTagName("item"); String MarqueeStr=""; for (int i = 0; i < nl.getLength(); i++) { HashMap<String,String> map = new HashMap<String,String>(); Element e = (Element) nl.item(i); newsList.add(map); } list=(GridView)getActivity().findViewById(R.id.grid); adapter=new Adapter1(getActivity(),newsList); list.setAdapter(adapter); } }
Fragment2 =>
public class Fragment2 extends Fragment{ public static String @L_772_10@url="http://www.abcd.com/en/RSS@L_772_10@s/1_2_3_5/latest/RSS.xml"; static String URL = ""; static final String KEY_HEAD = "item"; // parent node static final String KEY_DATE = "pubDate"; public static String headflag=""; int f=0; GridView list; HeadlinesAdapter adapter; private TextView mmessageView; private Button mClearButton; @Override public View onCreateView(LayoutInflater inflater,Bundle savedInstanceStatE) { View v = inflater.inflate(R.layout.second_fragment,savedInstanceStatE); function2();//here I am calling function2 populate_listview(); } public void populate_listview() { URL="http://www.abcd.com/en/RSS@L_772_10@s/1_2_3_5/latest/RSS.xml"; ArrayList<HashMap<String,String>(); Element e = (Element) nl.item(i); newsList.add(map); } list=(GridView)getActivity().findViewById(R.id.grid2); adapter=new HeadlinesAdapter(getActivity(),newsList); list.setAdapter(adapter); } }
主要活动=>
public class MainActivity extends FragmentActivity { private ViewPager mViewPager; private messageLoader mLoader; private Button mSenderButton,mReceiverButton; @Override public void onCreate(Bundle savedInstanceStatE) { super.onCreate(savedInstanceStatE); setContentView(R.layout.main); // We get UI references mViewPager = (ViewPager) findViewById(R.id.viewPager); mSenderButton = (Button) findViewById(R.id.sender_button); mReceiverButton = (Button) findViewById(R.id.receiver_button); // set pager adapter mViewPager.setAdapter(new MyAdapter(this)); // set receiver button listener mReceiverButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { mViewPager.setCurrentItem(1); } }); mSenderButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { mViewPager.setCurrentItem(0); } }); } private class MyAdapter extends FragmentPagerAdapter{ private Context mContext; private String[] frags = {Fragment1.class.getName(),Fragment2.class.getName()}; public MyAdapter(FragmentActivity activity) { super(activity.getSupportFragmentManager()); mContext = activity; } @Override public Object instantiateItem(ViewGroup container,int position) { Fragment frag = (Fragment) super.instantiateItem(container,position); if(frag instanceof messageLoader){ mLoader = (messageLoader) frag; } return frag; } @Override public Fragment getItem(int pos) { return Fragment.instantiate(mContext,frags[pos]); } @Override public int getCount() { return frags.length; } } }
这是布局,
first_fragment.xml =>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://scheR_957_11845@as.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:BACkground="#ffff" android:orientation="vertical" > <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" > </RelativeLayout> <GridView android:id="@+id/grid" android:layout_width="match_parent" android:layout_height="wrap_content" android:numcolumns="2" > </GridView> </LinearLayout>
second_fragment.xml =>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://scheR_957_11845@as.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:BACkground="#ffff" android:orientation="vertical" > <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" > </RelativeLayout> <GridView android:id="@+id/grid2" android:layout_width="match_parent" android:layout_height="wrap_content" android:numcolumns="2" > </GridView> </LinearLayout>@H_169_5@main.xml中=>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://scheR_957_11845@as.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TableRow android:layout_width="match_parent" android:layout_height="50dp" android:BACkground="#CCCCCC" android:gravity="center_vertical" android:paddingTop="3dp" > <Button android:id="@+id/receiver_button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:text="Headlines" /> <Button android:id="@+id/sender_button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:text="Kerala" /> </TableRow> <android.support.v4.view.ViewPager xmlns:android="http://scheR_957_11845@as.android.com/apk/res/android" android:id="@+id/viewPager" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout>
@H_349_11@mViewPager.setOnPagechangelistener(new OnPagechangelistener() { @Override public void onPageScrolled(int position,float positionOffset,int positionOffsetPixels) { } @Override public void onPageSELEcted(int position) { if(position==0){ function1(); }else if(position==1){ function2(); } } @Override public void onPageScrollStateChanged(int statE) { } });
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