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我已经使用了我在 StackOverflow 上找到的多选微调器的这个实现：

    package cz.destil.settleup.gui;

    public class MultiSpinner extends Spinner implements
        OnMultiChoiceClickListener, OnCancelListener {

    private List<String> items;
    private boolean[] selected;
    private String defaultText;
    private MultiSpinnerListener listener;

    public MultiSpinner(Context context) {
        super(context);
    }

    public MultiSpinner(Context arg0, AttributeSet arg1) {
        super(arg0, arg1);
    }

    public MultiSpinner(Context arg0, AttributeSet arg1, int arg2) {
        super(arg0, arg1, arg2);
    }

    @Override
    public void onClick(DialogInterface dialog, int which, boolean isChecked) {
        if (isChecked)
            selected[which] = true;
        else
            selected[which] = false;
    }

    @Override
    public void onCancel(DialogInterface dialog) {
        // refresh text on spinner
        StringBuffer spinnerBuffer = new StringBuffer();
        boolean someUnselected = false;
        for (int i = 0; i < items.size(); i++) {
            if (selected[i] == true) {
                spinnerBuffer.append(items.get(i));
                spinnerBuffer.append(", ");
            } else {
                someUnselected = true;
            }
        }
        String spinnerText;
        if (someUnselected) {
            spinnerText = spinnerBuffer.toString();
            if (spinnerText.length() > 2)
                spinnerText = spinnerText.substring(0, spinnerText.length() - 2);
        } else {
            spinnerText = defaultText;
        }
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getContext(),
                android.R.layout.simple_spinner_item,
                new String[] { spinnerText });
        setAdapter(adapter);
        listener.onItemsSelected(selected);
    }

    @Override
    public boolean performClick() {
        AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
        builder.setMultiChoiceItems(
                items.toArray(new CharSequence[items.size()]), selected, this);
        builder.setPositiveButton(android.R.string.ok,
                new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.cancel();
                    }
                });
        builder.setOnCancelListener(this);
        builder.show();
        return true;
    }

    public void setItems(List<String> items, String allText,
            MultiSpinnerListener listener) {
        this.items = items;
        this.defaultText = allText;
        this.listener = listener;

        // all selected by default
        selected = new boolean[items.size()];
        for (int i = 0; i < selected.length; i++)
            selected[i] = true;

        // all text on the spinner
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getContext(),
                android.R.layout.simple_spinner_item, new String[] { allText });
        setAdapter(adapter);
    }

    public interface MultiSpinnerListener {
        public void onItemsSelected(boolean[] selected);
    }
}

现在我想更改单击此 Multispinner 按钮时打开的窗口的设计，我尝试将其更改android.R.layout.simple_spinner_item为我自己的布局，但这仅更改了打开微调器的按钮，而不是其中的项目。

如何更改内部 multispinner 项目的设计？

谢谢。

4

1 回答 1

1

显示的对话框是在performClick()方法中创建的。但是，您似乎无法在此处更改列表项的布局，因为该setMultiChoiceItems(...)方法不支持它。

因此，您需要为您的对话框实现一个自定义视图，您可以在setView(...)方法（示例）中设置它。然后您还必须自己实现该onClick()方法。

更新：也许更好的方法是使用该setAdapter(...)方法。这样你就可以使用你自己的列表适配器，这样你就可以按照你想要的方式来设置项目的样式。而且这个方法还提供了一个 onclick 监听器参数。所以它可能更简单。

更新2：我自己尝试了一下，这就是我想出的。我添加了一条评论，您可以在其中插入自己的视图：

public class MultiSpinner extends Spinner implements OnCancelListener,
        OnItemClickListener {
    public class MultiSpinnerListAdapter extends BaseAdapter {
        @Override
        public int getCount() {
            return items.size();
        }

        @Override
        public String getItem(int position) {
            return items.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // TODO: Update the following to use your own custom view.

            if (convertView == null) {
                convertView = activity.getLayoutInflater().inflate(
                        android.R.layout.simple_list_item_multiple_choice,
                        parent, false);
            }

            CheckedTextView textView = (CheckedTextView) convertView;
            textView.setText(items.get(position));
            textView.setChecked(selected[position]);

            return convertView;
        }
    }

    private MultiSpinnerListAdapter adapter;
    private Activity activity;
    private List<String> items;
    private boolean[] selected;
    private String defaultText;
    private MultiSpinnerListener listener;

    public MultiSpinner(Context context) {
        super(context);
    }

    public MultiSpinner(Context arg0, AttributeSet arg1) {
        super(arg0, arg1);
    }

    public MultiSpinner(Context arg0, AttributeSet arg1, int arg2) {
        super(arg0, arg1, arg2);
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        CheckedTextView textView = (CheckedTextView) view;

        textView.setChecked(!textView.isChecked());
        selected[position] = textView.isChecked();
    }

    @Override
    public void onCancel(DialogInterface dialog) {
        // refresh text on spinner
        StringBuffer spinnerBuffer = new StringBuffer();
        boolean someUnselected = false;
        for (int i = 0; i < items.size(); i++) {
            if (selected[i] == true) {
                spinnerBuffer.append(items.get(i));
                spinnerBuffer.append(", ");
            } else {
                someUnselected = true;
            }
        }
        String spinnerText;
        if (someUnselected) {
            spinnerText = spinnerBuffer.toString();
            if (spinnerText.length() > 2)
                spinnerText = spinnerText
                        .substring(0, spinnerText.length() - 2);
        } else {
            spinnerText = defaultText;
        }
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getContext(),
                android.R.layout.simple_spinner_item,
                new String[] { spinnerText });
        setAdapter(adapter);
        listener.onItemsSelected(selected);
    }

    @Override
    public boolean performClick() {
        AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
        builder.setAdapter(adapter, null);
        builder.setPositiveButton(android.R.string.ok,
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.cancel();
                    }
                });
        builder.setOnCancelListener(this);

        AlertDialog dialog = builder.create();
        dialog.getListView().setOnItemClickListener(this);

        dialog.show();
        return true;
    }

    public void setItems(Activity activity, List<String> items, String allText,
            MultiSpinnerListener listener) {
        this.adapter = new MultiSpinnerListAdapter();
        this.activity = activity;
        this.items = items;
        this.defaultText = allText;
        this.listener = listener;

        // all selected by default
        selected = new boolean[items.size()];
        for (int i = 0; i < selected.length; i++)
            selected[i] = true;

        // all text on the spinner
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getContext(),
                android.R.layout.simple_spinner_item, new String[] { allText });
        setAdapter(adapter);
    }

    public interface MultiSpinnerListener {
        public void onItemsSelected(boolean[] selected);
    }
}
于 2013-09-15T15:47:56.560 回答