我們可以使用片段來建立一個註冊頁面

Question

我正在一個項目中，我從活動導航到一個片段，其中包含我的預訂頁面與EditText字段如名稱，電子郵件ID。我想知道的是，是否有可能獲得這些字段的值並將它們作爲電子郵件發送給片段。如果是的話，請幫助。 MainActivity.java

public class MainActivity extends AppCompatActivity { 
    FloatingActionButton fab; 
    RelativeLayout aboutUs; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     aboutUs = (RelativeLayout) findViewById(R.id.aboutUs); 

     Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
     setSupportActionBar(toolbar); 

     fab = (FloatingActionButton) findViewById(R.id.fab); 
     fab.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) 
         .setAction("Action", null).show(); 
      } 
     }); 
    } 


    //click methods goes here 

    public void clickAboutUs(View view){ 

     /*android.support.v4.app.FragmentManager fragmentManager = getSupportFragmentManager(); 
     android.support.v4.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); 
     FragmentAboutUs fragmentAboutUs = new FragmentAboutUs(); 
     fragmentTransaction.replace(R.id.fragment_container, fragmentAboutUs); 
     fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN); 
     fragmentTransaction.addToBackStack(null); 

     fragmentTransaction.commit();*/ 

     FragmentAboutUs fragmentAboutUs = new FragmentAboutUs(); 
     replaceFragment(fragmentAboutUs , true); 



    } 



    public void clickEvents(View view){ 


     FragmentEvents fragmentEvents = new FragmentEvents(); 
     replaceFragment(fragmentEvents,true); 



    } 

    public void clickMedia(View view){ 


     FragmentMedia fragmentMedia = new FragmentMedia(); 
     replaceFragment(fragmentMedia,true); 



    } 

    public void clickContact(View view){ 


     FragmentContact fragmentContact = new FragmentContact(); 
     replaceFragment(fragmentContact,true); 




    } 

    public boolean popFragment() { 
     boolean isPop = false; 

     Fragment currentFragment = getSupportFragmentManager() 
       .findFragmentById(R.id.fragment_container); 

     if (getSupportFragmentManager().getBackStackEntryCount() > 0) { 
      isPop = true; 
      getSupportFragmentManager().popBackStackImmediate(); 
     } 

     return isPop; 
    } 

    @Override 
    public void onBackPressed() { 
     if (!popFragment()) { 
      finish(); 
     } 
    } 

    public void replaceFragment(Fragment fragment, boolean addToBackStack) { 

     android.support.v4.app.FragmentTransaction transaction = getSupportFragmentManager() 
       .beginTransaction(); 

     if (addToBackStack) { 
      transaction.addToBackStack(null); 

     } else { 
      getSupportFragmentManager().popBackStack(null, 
        FragmentManager.POP_BACK_STACK_INCLUSIVE); 

     } 
     transaction.replace(R.id.fragment_container, fragment); 
     transaction.commit(); 
     getSupportFragmentManager().executePendingTransactions(); 

    } 





    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 


} 

這裏是我的片段類

FragmentContact.java

public class FragmentContact extends Fragment 
{ 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 

    View view = inflater.inflate(R.layout.contac_us, container,false); 
    return view; 
} 
} 

在片段FragmentContact我計劃包括reseration形式。我搜索「在Android中使用片段的註冊頁面」，但沒有得到任何幫助。

Answer 1

代碼在片段vs活動中沒有什麼不同。您可以像您一樣使用findViewById，但您只需使用充氣的視圖即可。

public class FragmentContact extends Fragment 
{ 
    private EditText address, body; 
    private Button sendEmailButton; 

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 

     View view = inflater.inflate(R.layout.contac_us, container,false); 

     sendEmailButton = (Button) view.findViewById(R.id.send_email); 
     sendEmailButton.setOnClickListener(...); // TODO: Implement 

     return view; 
    } 

    public void sendEmail(String address, String body) { } 
}