关于android：从dialogfragment设置片段edittext值

Set fragment edittext value from dialogfragment

我正在尝试创建searchdate。这是我在这里做的是RijekSearch.java

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@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_rijek_search, container, false);
EditText start = (EditText) v.findViewById(R.id.startdateval);

start.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
FragmentManager fm = getFragmentManager();
DatePickerFragment myDialogFragment = new DatePickerFragment();
myDialogFragment.show(fm,"dialog_fragment");
}
});
return v;
}

这是DatePickerFragment

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public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

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);

return new DatePickerDialog(getActivity(), this, year, month, day);
}

@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Calendar c = Calendar.getInstance();
c.set(year, month, day);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String formattedDate = sdf.format(c.getTime());

Fragment fr = new RijekSearch();
FragmentManager fm=getFragmentManager();
FragmentTransaction ft=fm.beginTransaction();
Bundle args = new Bundle();
args.putString("startval", formattedDate);
fr.setArguments(args);
ft.replace(R.id.content_frame, fr);
ft.commit();

}
}

所以。首先，我打开RijekSearch这是一个片段。然后在我点击start(EditText)后，它将显示dialogfragment(DatePickerFragment)。显示没有问题，没有错误。

我的问题是，在从DatePickerFragment中选择日期后，如何设置start值？

您需要将EditText数据一个Fragment传递给DialogFragment

首先删除此start.setOnClickListener()，您可以使用这些

1 -on文本更改侦听器

2 - FocusChangeListener

3 - 搜索并处理其点击

on Action传递EditText数据

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Bundle args = new Bundle();
args.putString("key","value");
DialogFragment newFragment = new YourDialogFragment();
newFragment.setArguments(args);
newFragment.show(getSupportFragmentManager(),"TAG");

并在DialogFragment中获取值

1 2	Bundle mArgs = getArguments(); String myValue = mArgs.getString("key");

相关讨论

创建接口DateCallback

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interface DateCallback{
void onDateSet(String fDate);
}

在DialogFragment params中获取此信息

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public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {

private static DataCallback dataCallback;

public static DatePickerFragment newInstance(DataCallback dataCallback){
this.dataCallback = dataCallback;
return new DatePickerFragment();
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

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);

return new DatePickerDialog(getActivity(), this, year, month, day);
}

@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Calendar c = Calendar.getInstance();
c.set(year, month, day);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String formattedDate = sdf.format(c.getTime());
FragmentManager fm=getFragmentManager();
dataCallback.onDateSet(formattedDate);
fm.popBackStack();
}
}

现在在你的RijekSearch中

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start.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
FragmentManager fm = getFragmentManager();
DatePickerFragment myDialogFragment = DatePickerFragment.newInstance(new DateCallback(){
@Override
public void onDateSet(String fDate){
start.setText(fDate);
}
});
myDialogFragment.show(fm,"dialog_fragment");
}
});