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[英]Android, passing Extras from activity, to fragment activity, to fragment
[英]Passing values from activity to fragment android
我想將某個值從活動傳遞到android中的片段。 這是一些代碼: -
主要活動:-
PlaceDialogFragment dialogFragment = new PlaceDialogFragment(place,dm);
分段:-
public PlaceDialogFragment(Place place, DisplayMetrics dm){
super();
this.mPlace = place;
this.mMetrics = dm;
}
在片段中使用構造函數給出了一個錯誤: -
Avoid non-default constructors in fragments: use a default constructor plus Fragment#setArguments(Bundle) instead
如果我用以下代碼替換構造函數: -
public static final DialogFragment newInstance(Place place, DisplayMetrics dm)
{
DialogFragment fragment = new DialogFragment();
Bundle bundle = new Bundle(2);
bundle.putParcelable("Place", place);
bundle.putFloat("Metrics", dm.density);
fragment.setArguments(bundle);
return fragment ;
}
我在MainActivity.Java中收到錯誤: -
The constructor PlaceDialogFragment(Place, DisplayMetrics) is undefined
我該如何解決這個問題?
更改您的活動以使用新方法。
PlaceDialogFragment dialogFragment = PlaceDialogFragment.newInstance(place, dm);
你可以這樣做:
From Activity you send data with intent as:
Bundle bundle = new Bundle();
bundle.putString("edttext", "From Activity");
// set Fragmentclass Arguments
Fragmentclass fragobj = new Fragmentclass();
fragobj.setArguments(bundle);
並在Fragment onCreateView方法中:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
String strtext = getArguments().getString("edttext");
return inflater.inflate(R.layout.fragment, container, false);
}
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