Jak wywołać metodę wewnątrz fragmentu z działania, w którym fragment dynamicznie utworzony

Question

Tworzę fragment dynamicznie bez pliku XML teraz chcę wywołać metodę wewnątrz fraging z działania rodzica, więc jak mogę to zrobić, może każdy organ o tym wie , znalazłem wiele kwestii, ale robią z xml

Fragmentactivity

public class HomeActivity extends FragmentActivity implements OnClickListener { 

     public static final String TAG = HomeActivity.class.getSimpleName(); 
     PageIndicator mIndicator; 
     //Spinner spinner1; 
     ImageView serversetting,dropdown; 
     TextView selectrange; 
     int num,counter=0; 
     String url,apiUser,apipass,TestAccount; 
     /* public static HomeActivity newInstance() { 
     return new HomeActivity(); 
     }*/ 

     @Override 
     public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.fragment_parent); 
     ViewPager mViewPager = (ViewPager) findViewById(R.id.viewpager); 
     selectrange=(TextView)findViewById(R.id.selectrange); 
     serversetting=(ImageView)findViewById(R.id.settingsserver); 
     dropdown=(ImageView)findViewById(R.id.dropdown); 
     mViewPager.setAdapter(new MyAdapter(getSupportFragmentManager())); 
     mIndicator = (CirclePageIndicator)findViewById(R.id.indicator); 
     mIndicator.setViewPager(mViewPager); 

     selectrange.setOnClickListener(this); 
     dropdown.setOnClickListener(this); 
     serversetting.setOnClickListener(this); 

     /*spinner1 = (Spinner) findViewById(R.id.spinner1); 
     List<String> list = new ArrayList<String>(); 
     list.add("Current Month"); 
     list.add("Last Month"); 
     list.add("Last 5 Days"); 
     list.add("Last 10 Days"); 
     ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, 
      R.layout.spinner_layout,R.id.spinnerTarget,list); 
     //dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 

     serversetting.setOnClickListener(this); 
     spinner1.setAdapter(dataAdapter); 
     spinner1.setOnItemSelectedListener(new OnItemSelectedListener() { 

      @Override 
      public void onItemSelected(AdapterView<?> parent, View view, int pos, 
        long id) { 
       // TODO Auto-generated method stub 
       Toast.makeText(parent.getContext(), 
         "OnItemSelectedListener : " + parent.getItemAtPosition(pos).toString(), 
         Toast.LENGTH_SHORT).show(); 
      } 

      @Override 
      public void onNothingSelected(AdapterView<?> arg0) { 
       // TODO Auto-generated method stub 

      } 
     });*/ 
     } 


     public class MyAdapter extends FragmentPagerAdapter { 
     public MyAdapter(FragmentManager fm) { 
      super(fm); 
     } 

     @Override 
     public int getCount() { 
      return 3; 
     } 

     @Override 
     public Fragment getItem(int position) { 
      /* Bundle args = new Bundle(); 
      args.putInt(TextViewFragment.POSITION_KEY, position); 
      return TextViewFragment.newInstance(args);*/ 
      Fragment f=new Fragment(); 
      switch(position) { 
       case 0: 
        f= new SalesGraphFragment(); 

        break; 
       case 1: 
        f=new OrderGraphFragment(); 
        break; 
       case 2: 
        f=new UserGraphFragment(); 
        break; 
      } 
      return f; 
     } 


     /*@Override 
     public CharSequence getPageTitle(int position) { 
      return "Fragment # " + position; 
     }*/ 

     } 

     @Override 
     protected void onStart() 
     { 
     super.onStart(); 
     EasyTracker.getInstance().activityStart(this); 
     } 

     @Override 
     protected void onStop() 
     { 
     super.onStop(); 
     EasyTracker.getInstance().activityStop(this); 
     } 

     void SelectRangeDialog() 
     { 
     final CharSequence[] list = {"All time","Current Month","Last Month","Today","YesterDay"}; 
     AlertDialog.Builder alert = new AlertDialog.Builder(HomeActivity.this); 

     if(counter==0) 
     { 
     num=1; 
     counter++; 
     } 

     alert.setTitle("Range"); 
     alert.setPositiveButton("OK", new DialogInterface.OnClickListener() { 

      @Override 
      public void onClick(DialogInterface dialog, int which) { 
     // TODO Auto-generated method stub 
       dialog.dismiss(); 



       //selectrange.setText(list[which]); 
     //  new ChangeStatusAsync().execute(); 
      } 
     }); 
     /*if(status.equals("Order Pending")) 
      num=0; 
     else if(status.equals("Upfront Received")) 
      num=1; 
     else if(status.equals("Payment Complete")) 
      num=2;*/ 
     alert.setSingleChoiceItems(list,num, new DialogInterface.OnClickListener() 
     { 
      @Override 
      public void onClick(DialogInterface dialog, int which) 
      { 
       //newstatus=list[which].toString(); 
       selectrange.setText(list[which]); 
       num=which; 
      } 
     }); 
     alert.show(); 
     } 


     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 
      switch (v.getId()) { 
      case R.id.settingsserver: 
       Intent settings=new Intent(HomeActivity.this,SettingsActivity.class); 
       startActivity(settings); 
       break; 

      case R.id.selectrange: 
       SelectRangeDialog(); 
       break; 

      case R.id.dropdown: 
       SelectRangeDialog(); 

       break; 

      default: 
       break; 
      } 

     } 

    } 

Fragment

public class SalesGraphFragment extends Fragment { 

    public static final String POSITION_KEY = "com.burnside.embeddedfragmenttest.POSITION"; 
    public static final String TITLE_KEY = "com.burnside.embeddedfragmenttest.TITLE"; 
    Object saleData[]; 
    String strSales=""; 
    TextView txt; 
    public Object b; 
    List array; 
    public Object [] objects; 
    public static SalesGraphFragment INSTANCE; 
    LinearLayout layout; 
    String sessionId,url,amount,apiUser,apipass,TestAccount; 
    MagentoStoreLogin sales=new MagentoStoreLogin(); 
    public ProgressDialog order_dialog; 
    public static SalesGraphFragment newInstance(Bundle args) { 
    SalesGraphFragment fragment = new SalesGraphFragment(); 
    fragment.setArguments(args); 
    ProgressDialog order_dialog; 
    return fragment; 
    } 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    try{ 
     TestAccount=getActivity().getIntent().getExtras().getString("TestAccount"); 
     if(TestAccount==null) 
      TestAccount=""; 
     if(TestAccount.equals("TestAccount")) 
     { 
      url =getActivity().getIntent().getExtras().getString("defaulturl"); 
      apiUser=getActivity().getIntent().getExtras().getString("defaultapiuser"); 
      apipass=getActivity().getIntent().getExtras().getString("defaultapipass"); 

       System.out.println(url + apipass + apiUser); 


     } 
     else 
     { 
      url=PreferenceConnector.readString(getActivity(),PreferenceConnector.URL, null); 
      System.out.println("URL is:"+url); 
      apiUser=PreferenceConnector.readString(getActivity(),PreferenceConnector.APIUSER, null); 
      apipass=PreferenceConnector.readString(getActivity(),PreferenceConnector.APIPASS, null); 
      new saleDetail().execute(); 
      new GraphValue().execute(); 
      System.out.println(url + apipass + apiUser); 
     } 
      if(url!=null&&url!="") 
      { 
       //Load the first 12 items 
      // counter=0; 


      } 
      else 
      { 
       Toast.makeText(getActivity(),"Please do the API settings first", 1).show(); 
      } 


     } 
     catch(Exception e) 
     { 
      Toast.makeText(getActivity(),"Please do the settings first Exception", 1).show(); 
     // uName.setText(""); 
     // password.setText(""); 
     } 
     } 

    public static SalesGraphFragment getSaleInstance() 
    { 
     return INSTANCE; 

    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     setHasOptionsMenu(true); 
    return inflater.inflate(R.layout.sales_fragment, container, false); 



    } 

    @Override 
    public void onViewCreated(View view, Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 

    if(!TestAccount.equals("TestAccount")) 
    { 
    GraphViewSeries exampleSeries = new GraphViewSeries(new GraphViewData[] { 
      new GraphViewData(5, 2.0d) 
      , new GraphViewData(4, 1.0d) 
      , new GraphViewData(3, 3.0d) // another frequency 
      , new GraphViewData(2, 2.0d) 
      , new GraphViewData(1, 1.0d) 
      , new GraphViewData(0, 6.0d) 
    }); 

    // graph with dynamically genereated horizontal and vertical labels 
    GraphView graphView; 

     graphView = new LineGraphView(
       getActivity() // context 
       , "" // heading 
     ); 
    graphView.addSeries(exampleSeries); // data 

// LinearLayout layout = (LinearLayout) findViewById(R.id.graph1); 
// layout.addView(graphView); 

    // graph with custom labels and drawBackground 


     ((LineGraphView) graphView).setDrawBackground(true); 
    // custom static labels 
// graphView.setHorizontalLabels(new String[] {"2 days ago", "yesterday", "today", "tomorrow"}); 
// graphView.setVerticalLabels(new String[] {"high", "middle", "low"}); 
    //graphView.addSeries(exampleSeries); // data 
    //graphView.setViewPort(2, 5); 
    //graphView.setBackgroundColor(Color.WHITE); 
// graphView.set 
    layout = (LinearLayout) view.findViewById(R.id.salesgraph); 
    txt=(TextView) view.findViewById(R.id.salesamount); 


    txt.setText(getData()); 
    layout.addView(graphView); 
    } 
    } 


    @Override 
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 
     // TODO Add your menu entries here 
     inflater.inflate(R.menu.optionmenus, menu); 
     super.onCreateOptionsMenu(menu, inflater); 
    } 

    // Handle click events 
    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     switch (item.getItemId()) { 

     case R.id.aboutus: 
      Intent aboutus=new Intent(getActivity(),AboutUs.class); 
      startActivity(aboutus); 
       return true; 

     case R.id.settings: 
      Intent settings=new Intent(getActivity(),SettingsActivity.class); 
      startActivity(settings); 
       return true; 

     default: 
      return super.onOptionsItemSelected(item); 
    } 
    } 


    public String getData() 
    { 

     return strSales; 
    } 
    public void setSessionId(String sessionId) 
    { 
    this.sessionId=sessionId;    
    } 
    public class saleDetail extends AsyncTask<Void,Integer,Object> 
    { 

     ProgressBar progressBar; 

     @Override 
     protected Object doInBackground(Void... params) { 

       try 
       { if(sessionId==null) 

       { 
        sessionId=sales.login(url, apiUser, apipass); 
        setSessionId(sessionId); 
       } 

        b=sales. getSaleInfo(sessionId,url); 


      } catch (Exception e) { 
       e.printStackTrace(); 
       System.out.println("Getting Order Error:"+e.getMessage()); 

      //customer_results=null; 
      } 
     //} 

      return b; 



    } 
     @Override 
     protected void onPreExecute() 
      {  
      order_dialog = ProgressDialog.show(getActivity(),"Getting Sales Information...", "Please wait while loading", true); 
      } 

     protected void onPostExecute(final Object object) 
     {  

      order_dialog.dismiss(); 

      if(object!=null) 
      { 
      System.out.println("Dismiss Called"); 
      Map<String, Double> mappedData=(Map)object; 
      Double sales=mappedData.get("Total Sale"); 

      double finalValue = Math.round(sales * 100.0)/100.0; 

      strSales=""+finalValue; 
      txt.setText(finalValue+""); 
      //setData(object); 

      } 
      else 
      { 
       Toast.makeText(getActivity(),"You Dont have our package", 10).show(); 

     } 
     } 
} 

    public class GraphValue extends AsyncTask<Void,Integer,Object[]> 
    { 

     ProgressBar progressBar; 

     @Override 
     protected Object[] doInBackground(Void... params) { 

       try 
       { if(sessionId==null) 

       { 
        sessionId=sales.login(url, apiUser, apipass); 
        setSessionId(sessionId); 
       } 

        objects=sales.getGraphValue(sessionId,url); 


      } catch (Exception e) { 
       e.printStackTrace(); 
       System.out.println("Getting Order Error:"+e.getMessage()); 

      //customer_results=null; 
      } 
     //} 

      return objects; 



    } 
     @Override 
     protected void onPreExecute() 
      {  
     // order_dialog = ProgressDialog.show(getActivity(),"Getting Sales Information...", "Please wait while loading", true); 
      } 

     protected void onPostExecute(final Object object[]) 
     {  

     // order_dialog.dismiss(); 

     // System.out.println("Data length is:"+object.length); 
      // System.out.println("Dismiss Called"); 
      for(Object obj:object) 
      { 
       extractDate(obj); 
      } 

     } 
    private void extractDate(Object obj) { 
     // TODO Auto-generated method stub 


      Map map=(Map)obj; 

      System.out.println(map.get("getCreatedAt")); 



     } 


    } 



} 

Answer 1

Utworzę nową klasę abstrakcyjną, która rozszerzy fragment.

SalesGraphFragment, OrderGraphFragment i UserGraphFragment rozszerzą tę nową klasę i zaimplementują metodę, którą chcesz wywołać z działania.

z działalności, można wywołać tej metody w ten sposób:

adapter.getItem (X) .myMethod();

Answer 2

Fragment fragment = getFragmentManager().findFragmentById(R.id.fragment_holder); 
if (fragment instanceof MyFragment) 
    ((MyFragment) fragment).myFragmentMethod(); 

Answer 3

dobrze w niektórych przypadkach, gdy określona w specjalny XML ... wtedy to byłoby:

 [your fragment class here] blabla =([your fragment class here])getSupportFragmentManager() 

.findFragmentById(R.id.myfragment_id); 

blabla.method_x(); 

Answer 4

Jeśli w ogóle używasz ViewPager do renderowania fragment użyć tego kodu w swojej działalności macierzystej .

if(viewPager.getCurrentItem() == 1) //First fragment 
{ 
    FragmentOne frag1 = (FragmentOne)viewPager.getAdapter().instantiateItem(viewPager, viewPager.getCurrentItem()); 
    frag1.edittext1.setText(phone); 
} 
else if(viewPager.getCurrentItem() == 2) //Second fragment 
{ 
    FragmentTwo frag2 = (FragmentTwo)viewPager.getAdapter().instantiateItem(viewPager, viewPager.getCurrentItem()); 
    frag2.edittext2.setText(phone); 
}