我的活动范围从FragmentActivity
延伸,我有四个Fragments
的TABS,我在主AsyncTask
中有FragmentActivity
来从服务器获取加载数据,所以,我想在父FragmentActivity上完成AsyncTask函数时更新每个Fragment数据,因为我在使用空白数据启动Activity时使用android.support.v4.view.ViewPager
所有Fragment的UI加载,所以,我想要使用从AsyncTask获取的数据更新每个片段字段(TextView),如何更新。感谢您的帮助。以下代码用于获取片段
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
Fragment fragmenthome = new HomeFragment();
return fragmenthome;
case 1:
Fragment fragmentdiagnosis = new DiagnosisFragment();
return fragmentdiagnosis;
case 2:
Fragment fragmentcareplan = new CareplanFragment();
return fragmentcareplan;
case 3:
Fragment fragmentnote = new NoteFragment();
return fragmentnote;
case 4:
Fragment fragmenttask = new TaskFragment();
return fragmenttask;
}
return null;
}
这是一个样本片段
public static class DummySectionFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main_dummy,container, false);
TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
dummyTextView.setText("Comming Soon...");
return rootView;
}
}
这里是主要的活动 公共类PatientActivity extends FragmentActivity实现了ActionBar.TabListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_patient);
// AsyncTask function calling
}
答案 0 :(得分:0)
在片段中创建方法,在文本视图中更新文本,从片段活动中访问片段方法。
DemoFragment demo_frag = (DemoFragment)getSupportFragmentManager().findFragmentByTag("Demo_Fragment");
demo_frag.updateTextView();