android – 更新对话框片段选项选择的片段

我在组件上有片段单击弹出窗口DialogFragment.该对话框片段包含选项列表.当选择列表中的选项时,我想通知片段,以便我可以运行字段更新过程.
我做了这样的事

@Override
public void onClick(DialogInterface dialog,int item) {
     updateSharedPreference(item);
     Log.e("ProfilePersonaListDialog","Click on dialog,inside onClick");
     OnCloseListDialogListener act = (OnCloseListDialogListener) getActivity();
     act.onDialogListSelection();

     dismiss();
}

但是这个getActivity()调用FragmentActivity而不是调用触发对话框片段的片段.
我可以杀死当前打开/运行的片段并调用一个可以获得更新字段的新实例,但这是我希望避免的脏解决方案.

有什么建议如何在对话框片段中选择片段一次更新选项？

解决方法

刚刚回来解决方案.我的问题实际上是转发当前片段getTag()字符串作为DialogFragment的show()参数.如果有兴趣在这里工作样品.

创建简单的侦听器

public interface OnCloseListDialogListener {
    public void onDialogListSelection();
}

创建将扩展DialogFragment的新对话框

public class ListDialogFragment extends DialogFragment implements DialogInterface.OnClickListener {

    private PersonaData[] mPersonaData;
    private String[] mPersonaName;
    private final String TAG;

    public static ListDialogFragment newInstance(PersonaData[] personaData,String tag) {
        ListDialogFragment dialog = new ListDialogFragment(personaData,tag);
        Bundle bundle = new Bundle();
        dialog.setArguments(bundle);
        return dialog;
    }

    private ListDialogFragment(PersonaData[] personaData,String tag) {
        this.mPersonaData = personaData.clone();
        this.TAG = tag;
    }

    @Override
    public void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        setCancelable(true);
        int style = DialogFragment.STYLE_norMAL,theme = 0;
        setStyle(style,theme);
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle(R.string.dialog_title);
        mPersonaName = getData();//Your own implementation here
        builder.setNegativeButton("Cancel",this);
        builder.setSingleChoiceItems(mPersonaName,-1,new SingleChoiceListener());
        return builder.create();

    }

    @Override
    public void onClick(DialogInterface dialogInterface,int i) {
    }

    private class SingleChoiceListener implements DialogInterface.OnClickListener {
        @Override
        public void onClick(DialogInterface dialog,int item) {
            updateSharedPreference(item);
            OnCloseListDialogListener act = (OnCloseListDialogListener) getFragmentManager().findFragmentByTag(TAG);
            act.onDialogListSelection();
            dismiss();
        }
    }
}

然后在你想要调用此对话框的片段中,如下所示. DIALOG只是String常量我把它放在那里只是对话框

SOME_CLICKABLE.setonClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        FragmentManager manager = getFragmentManager();
        ListDialogFragment dialog = ListDialogFragment.newInstance(mPersona,getTag());
        dialog.show(manager,DIALOG);
    }
});

原文地址：https://www.jb51.cc/android/317024.html