在fragmnet中添加日期選擇器

Question

如何在片段中添加日期選擇器？

我在SO上發現了一些答案，展示瞭如何使用DialogFragment來獲取DatePicker。但是當我添加getSupportFragmentManager（）到我的fragmnet它會給出錯誤。

請幫我...

public class Fragment_addStudentDetails extends Fragment implements View.OnClickListener { 

EditText fName,mName, Address, sName, hNo, mNo, presentSpo; 
Button save; 
DatabaseAdapter databaseHelper; 
private ImageButton ib; 


@Override 
public View onCreateView(LayoutInflater inflater, 
         ViewGroup container, Bundle savedInstanceState) { 
    View view=inflater.inflate(R.layout.fragment_add_student_details,container,false); 
    fName = (EditText) view.findViewById(R.id.enterFname); 
    mName = (EditText) view.findViewById(R.id.enterMname); 
    sName = (EditText) view.findViewById(R.id.enterSureName); 
    Address =(EditText) view.findViewById(R.id.enterAddress); 
    hNo = (EditText) view.findViewById(R.id.entertph); 
    mNo = (EditText) view.findViewById(R.id.entertpm); 
    presentSpo = (EditText) view.findViewById(R.id.enterpres_sport); 

    save = (Button) view.findViewById(R.id.btnsavefrag); 

    save.setOnClickListener(this); 

    databaseHelper = new DatabaseAdapter(getActivity()); 

    return view; 
} 

@Override 
public void onClick(View v) { 
    switch (v.getId()){ 
     case R.id.btnsavefrag: 
     addStudent(v); 
     break; 
     case 1: 

     break; 
} 
} 
public void showDatePickerDialog(View v) { 
    new DatePickerFragment((EditText) v).show(getSupportFragmentManager(), "datePicker"); 
} 

public void addStudent(View view){ 
    String fname = fName.getText().toString(); 
    String mname = mName.getText().toString(); 
    String sname = sName.getText().toString(); 
    String address = Address.getText().toString(); 
    String TPhome = hNo.getText().toString(); 
    String TPmobile = mNo.getText().toString(); 
    String presentsport = presentSpo.getText().toString(); 

    long id= databaseHelper.insertData(fname, mname, sname, address, TPhome, TPmobile, presentsport); 
    if(id<0){ 
     Message.message(getActivity(),"Error inInsertiong Data"); 
    }else 
    { 
     Message.message(getActivity(),"Succecsfuly inserted to data"); 

    } 
} 

public void viewDetails(View view){ 
    String data = databaseHelper.getAllData(); 
    Message.message(getActivity(),data); 
} 
} 

我的日期選擇器Fragmnet類

public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener { 

public EditText activity_edittext; 

public DatePickerFragment(EditText edit_text) { 
    activity_edittext = edit_text; 
} 

@Override 
public Dialog onCreateDialog(Bundle savedInstanceState) { 
    // Use the current date as the default date in the picker 
    final Calendar c = Calendar.getInstance(); 
    int year = c.get(Calendar.YEAR); 
    int month = c.get(Calendar.MONTH); 
    int day = c.get(Calendar.DAY_OF_MONTH); 

    // Create a new instance of DatePickerDialog and return it 
    return new DatePickerDialog(getActivity(), this, year, month, day); 
} 

@Override 
public void onDateSet(DatePicker view, int year, int month, int day) { 
    activity_edittext.setText(String.valueOf(month + 1) + "/" + String.valueOf(day) + "/" + String.valueOf(year)); 
} 
} 

活動課

public class Group_Add_Details_menu extends Activity{ 

Fragment fragment; 
Button btnFragment1, btnFragment2, btnFragment3, btnFragment4; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.add_detal_menu); 
    btnFragment1 = (Button)findViewById(R.id.btn1); 
    btnFragment2 = (Button)findViewById(R.id.btn2); 
    btnFragment3 = (Button)findViewById(R.id.btn3); 
    btnFragment4 = (Button)findViewById(R.id.btn4); 

    btnFragment1.setBackgroundResource(R.drawable.add_sbutton_pressed); 
    btnFragment2.setBackgroundResource(R.drawable.add_tbutton_pressed); 
    btnFragment3.setBackgroundResource(R.drawable.add_pbutton_pressed); 
    btnFragment4.setBackgroundResource(R.drawable.view_button_pressed); 

    // get an instance of FragmentTransaction from your Activity 
    FragmentManager fragmentManager = getFragmentManager(); 
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); 

    //add a fragment 
    Fragment_addStudentDetails myFragment = new Fragment_addStudentDetails(); 
    fragmentTransaction.add(R.id.myfragment, myFragment); 
    fragmentTransaction.commit(); 

    btnFragment1.setOnClickListener(btnFragmentOnClickListener); 
    btnFragment2.setOnClickListener(btnFragmentOnClickListener); 
    btnFragment3.setOnClickListener(btnFragmentOnClickListener); 
    btnFragment4.setOnClickListener(btnFragmentOnClickListener); 
} 

Button.OnClickListener btnFragmentOnClickListener = new Button.OnClickListener(){ 

    @Override 
    public void onClick(View v) { 

     Fragment newFragment; 

     // Create new fragment 
     if(v == btnFragment1){ 
      newFragment = new Fragment_addStudentDetails(); 

     }else{ 
      newFragment = new Group_Add_test(); 
     } 

     // Create new transaction 
     FragmentTransaction transaction = getFragmentManager().beginTransaction(); 

     // Replace whatever is in the fragment_container view with this fragment, 
     // and add the transaction to the back stack 
     transaction.replace(R.id.myfragment, newFragment); 
     transaction.addToBackStack(null); 

     // Commit the transaction 
     transaction.commit(); 
    }}; 

    } 

Answer 1

cannot resolve method 'getSupportFragmentManager()' 

這意味着，您使用的是不同類型的它是的片段Android的，而不是支持庫的support fragment。

解決方案：

確保您的導入是這樣的：

import android.support.v4.app.Fragment; 

編輯：

由於您使用的是Activity這是默認的Android活動不支持你需要使用getFragmentManager()而不是getSupportFragmentManager()