如何使用Android旋转器与多个选择在碎片导航抽屉活动

Question

如何创建允许选择多个项目的微调器，即带有复选框的微调器?同时，我需要在导航抽屉活动的片段中使用这个选择旋转器。

任何人都可以用合适的示例代码清除我的疑问。

提前感谢!!

public class Doctor extends Fragment { public Doctor() { // Required empty public constructor }

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    getActivity().setTitle("Doctor");
    View v = inflater.inflate(R.layout.fragment_doctor, container, false);
    String [] values =
            {"All Town","Paris","Kodambakkam","Nungambakkam","T.Nagar","Egmore"};
    Spinner spinner = (Spinner) v.findViewById(R.id.town);
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this.getActivity(), android.R.layout.simple_spinner_item, values);
    adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
    spinner.setAdapter(adapter);
    String [] values1 =
            {"Select Doctor","Doctor1","Doctor2","Doctor3","Doctor4"};
    Spinner spinner1 = (Spinner) v.findViewById(R.id.doctor);
    ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this.getActivity(), android.R.layout.simple_spinner_item, values1);
    adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
    spinner1.setAdapter(adapter1);
    String [] values2 =
            {"Worked With","Nagaraj","Muthuvel"};
    Spinner spinner2 = (Spinner) v.findViewById(R.id.doctor);
    ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this.getActivity(), android.R.layout.simple_spinner_item, values2);
    adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
    spinner2.setAdapter(adapter2);
    return v;
}
public void onViewCreated(View view,@Nullable Bundle savedInstanceState){
    super.onViewCreated(view, savedInstanceState);
}

}

我需要将spinner2更改为我们的多项选择spinner。我从片段扩展类。不知道怎么处理这个多选题旋转器

Answer 1

How do I create spinner which allows to choose multiple items, i.e spinner with check boxes?

尝试使用multiselectionspinner。https://stackoverflow.com/a/6022474/6616489

导航抽屉片段内的多项选择旋转器

引用https://stackoverflow.com/a/20017862/6616489

Answer 2

public class Doctor extends Fragment{
MultiSelectionSpinner spinner2;
FragmentManager fm = getFragmentManager();
public Doctor() {
    // Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    getActivity().setTitle("Doctor");
    View v = inflater.inflate(R.layout.fragment_doctor, container, false);
    String [] values =
            {"All Town","Paris","Kodambakkam","Nungambakkam","T.Nagar","Egmore"};
    Spinner spinner = (Spinner) v.findViewById(R.id.town);
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this.getActivity(), android.R.layout.simple_spinner_item, values);
    adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
    spinner.setAdapter(adapter);
    String [] values1 =
            {"Select Doctor","Doctor1","Doctor2","Doctor3","Doctor4"};
    Spinner spinner1 = (Spinner) v.findViewById(R.id.se_doctor);
    ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this.getActivity(), android.R.layout.simple_spinner_item, values1);
    adapter1.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
    spinner1.setAdapter(adapter1);
    String [] values2 =
            {"Worked With","Nagaraj","Muthuvel"};
    // Multi spinner
    spinner2 = (MultiSelectionSpinner)v.findViewById(R.id.work);
    spinner2.setItems(values2);return v;
}}

以上代码持有多项选择旋转器(注:Spinner2)

public class MultiSelectionSpinner extends Spinner implements
    OnMultiChoiceClickListener {
String[] _items = null;
boolean[] mSelection = null;
ArrayAdapter<String> simple_adapter;
public MultiSelectionSpinner(Context context) {
    super(context);
    simple_adapter = new ArrayAdapter<String>(context,
            android.R.layout.simple_spinner_item);
    super.setAdapter(simple_adapter);
}
public MultiSelectionSpinner(Context context, AttributeSet attrs) {
    super(context, attrs);
    simple_adapter = new ArrayAdapter<String>(context,
            android.R.layout.simple_spinner_item);
    super.setAdapter(simple_adapter);
}
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
    if (mSelection != null && which < mSelection.length) {
        mSelection[which] = isChecked;
        simple_adapter.clear();
        simple_adapter.add(buildSelectedItemString());
    } else {
        throw new IllegalArgumentException(
                "Argument 'which' is out of bounds.");
    }
}
@Override
public boolean performClick() {
    AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
    builder.setMultiChoiceItems(_items, mSelection, this);
    builder.show();
    return true;
}
@Override
public void setAdapter(SpinnerAdapter adapter) {
    throw new RuntimeException(
            "setAdapter is not supported by MultiSelectSpinner.");
}
public void setItems(String[] items) {
    _items = items;
    mSelection = new boolean[_items.length];
    simple_adapter.clear();
    simple_adapter.add(_items[0]);
    Arrays.fill(mSelection, false);
}
public void setItems(List<String> items) {
    _items = items.toArray(new String[items.size()]);
    mSelection = new boolean[_items.length];
    simple_adapter.clear();
    simple_adapter.add(_items[0]);
    Arrays.fill(mSelection, false);
}
public void setSelection(String[] selection) {
    for (String cell : selection) {
        for (int j = 0; j < _items.length; ++j) {
            if (_items[j].equals(cell)) {
                mSelection[j] = true;
            }
        }
    }
}
public void setSelection(List<String> selection) {
    for (int i = 0; i < mSelection.length; i++) {
        mSelection[i] = false;
    }
    for (String sel : selection) {
        for (int j = 0; j < _items.length; ++j) {
            if (_items[j].equals(sel)) {
                mSelection[j] = true;
            }
        }
    }
    simple_adapter.clear();
    simple_adapter.add(buildSelectedItemString());
}
public void setSelection(int index) {
    for (int i = 0; i < mSelection.length; i++) {
        mSelection[i] = false;
    }
    if (index >= 0 && index < mSelection.length) {
        mSelection[index] = true;
    } else {
        throw new IllegalArgumentException("Index " + index
                + " is out of bounds.");
    }
    simple_adapter.clear();
    simple_adapter.add(buildSelectedItemString());
}
public void setSelection(int[] selectedIndicies) {
    for (int i = 0; i < mSelection.length; i++) {
        mSelection[i] = false;
    }
    for (int index : selectedIndicies) {
        if (index >= 0 && index < mSelection.length) {
            mSelection[index] = true;
        } else {
            throw new IllegalArgumentException("Index " + index
                    + " is out of bounds.");
        }
    }
    simple_adapter.clear();
    simple_adapter.add(buildSelectedItemString());
}
public List<String> getSelectedStrings() {
    List<String> selection = new LinkedList<String>();
    for (int i = 0; i < _items.length; ++i) {
        if (mSelection[i]) {
            selection.add(_items[i]);
        }
    }
    return selection;
}
public List<Integer> getSelectedIndicies() {
    List<Integer> selection = new LinkedList<Integer>();
    for (int i = 0; i < _items.length; ++i) {
        if (mSelection[i]) {
            selection.add(i);
        }
    }
    return selection;
}
private String buildSelectedItemString() {
    StringBuilder sb = new StringBuilder();
    boolean foundOne = false;
    for (int i = 0; i < _items.length; ++i) {
        if (mSelection[i]) {
            if (foundOne) {
                sb.append(", ");
            }
            foundOne = true;
            sb.append(_items[i]);
        }
    }
    return sb.toString();
}
public String getSelectedItemsAsString() {
    StringBuilder sb = new StringBuilder();
    boolean foundOne = false;
    for (int i = 0; i < _items.length; ++i) {
        if (mSelection[i]) {
            if (foundOne) {
                sb.append(", ");
            }
            foundOne = true;
            sb.append(_items[i]);
        }
    }
    return sb.toString();
}}

上面的代码是用来创建从spinner2调用的多选微调器。

请检查代码。