[英]Using Activity methods in Fragment
Hi I am an amateur in Android, and I've got huge problem with using activity methods in my fragment class. 嗨,我是Android的业余爱好者,在我的片段类中使用活动方法遇到了很大的问题。
I would like to implement setContentView
, findViewById
and getMenuInflater
. 我想实现setContentView
, findViewById
和getMenuInflater
。 Unfortunately, I don't know how to do it. 不幸的是,我不知道该怎么做。
public class WagaFragment extends Fragment{
private Spinner fromSpinner, toSpinner;
private EditText fromEditText, toEditText;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
**setContentView**(R.layout.activity_main);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.units, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
fromSpinner = (Spinner) **findViewById**(R.id.spinner_from);
toSpinner = (Spinner) **findViewById**(R.id.spinner_to);
fromSpinner.setAdapter(adapter);
toSpinner.setAdapter(adapter);
fromEditText = (EditText) **findViewById**(R.id.editText_from);
toEditText = (EditText) **findViewById**(R.id.editText_to);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle(R.string.app_name);
toolbar.setTitleTextColor(Color.YELLOW);
}
@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;
}
public void konwertuj(View view) {
// Get the string from the Spinners and number from the EditText
String fromString = (String) fromSpinner.getSelectedItem();
String toString = (String) toSpinner.getSelectedItem();
double input = Double.valueOf(fromEditText.getText().toString());
// Convert the strings to something in our Unit enu,
Konwerter.Jednostka fromJednostka = Konwerter.Jednostka.fromString(fromString);
Konwerter.Jednostka toJednostka = Konwerter.Jednostka.fromString(toString);
// Create a converter object and convert!
Konwerter konwerter = new Konwerter(fromJednostka, toJednostka);
double result = konwerter.convert(input);
toEditText.setText(String.valueOf(result));
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.tab_fragment_1, container, false);
}
}
Try at onCreateView: 尝试onCreateView:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_name, container, false);
fromSpinner = (Spinner) view.findViewById(R.id.spinner_from);
return view;
}
In Fragments "contentView" (in your meanign) is defined in public View onCreateView
procedure. 在片段中,“ contentView”(您的意思是)在public View onCreateView
过程中定义。
According to your code: you have to use 根据您的代码:您必须使用
View view = inflater.inflate(R.layout.tab_fragment_1, container, false);
<your control> = <Control type> view.findViewById(<control id>)
For MenuInflater try this: 对于MenuInflater,请尝试以下操作:
MenuInflater inflater = getActivity().getMenuInflater();
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