如何通过多项选择重新调整 Spinner 中项目的高度? [英] How to re size the Height of the Items in Spinner with multiple choice?

问题描述

我只是根据这个 stackoverflow 显示带有多项选择的 spinner答案(见@Destil 答案).这里我的问题是我无法通过多项选择重新调整 Spinner 中项目的高度.如何重新调整每个项目的高度?

I just showing the spinner with multiple choice based on this stackoverflow answer(see @Destil answer). Here my problem is I can't re size the Height of the items in Spinner with multiple choice. How to re size the Height of each Items?

推荐答案

据我所知，您必须使用自定义适配器，并覆盖 getDropDown 和 getView 方法.您将能够自定义每个项目以自定义布局.

As i know, you will have to use a custom adapter, and override the getDropDown and the getView methods. You will be able to customize each item customizing the layout.

嗯……词很好，例子更好，试试这样的:

Well... words are good, example better, try something like that :

public class CustomStringArrayAdapter extends ArrayAdapter<String>
{
private Activity    myActivity;

public CustomStringArrayAdapter(Context context, int layoutResourceId, int textViewResourceId, List<String> objects, Activity act)
{
    super(context, layoutResourceId, textViewResourceId, objects);
    this.myActivity = act;
}

@Override
public View getDropDownView(int position, View convertView, ViewGroup parent)
{
    return getCustomView(position, convertView, parent);
}

public View getCustomView(int position, View convertView, ViewGroup parent)
{
    LayoutInflater inflater = myActivity.getLayoutInflater();
    View row = inflater.inflate(R.layout.spinner_layout, parent, false);
    TextView label = (TextView) row.findViewById(R.id.spinner_textview);
    label.setText(getItem(position));
    LinearLayout layout = (LinearLayout) row.findViewById(R.id.spinner_linear_layout);

    return row;
}

@Override
public View getView(int position, View convertView, ViewGroup parent)
{
    LayoutInflater inflater = myActivity.getLayoutInflater();
    View row = inflater.inflate(R.layout.spinner_layout, parent, false);
    TextView label = (TextView) row.findViewById(R.id.spinner_textview);
    label.setText(getItem(position));

    return row;
    }

}

和布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="50dp"
    android:layout_gravity="center"
    android:gravity="center"
    android:background="@drawable/transparent"
    android:id="@+id/spinner_linear_layout">
    <TextView
        android:layout_height="fill_parent"
        android:layout_width="fill_parent"
        android:gravity="center"
        android:layout_gravity="center"
        android:textSize="21sp"
        android:singleLine="true"
        android:id="@+id/spinner_textview"
        android:textColor="@color/black" />
</LinearLayout>

(但这只是一个示例，如果您想根据选择调整大小，您可以在每个对象上添加一个布尔值 mSelected 并根据此布尔值更改视图)

(But it's just an sample, if you want to resize depending on the selection, you can add a boolean mSelected on each object and change the view depending on this boolean)

然后在 MultiSpinner 中:

Edit : Then in the MultiSpinner :

删除这个:

ArrayAdapter<String> adapter = new ArrayAdapter<String>(getContext(),
            android.R.layout.simple_spinner_item,
            new String[] { spinnerText });
    setAdapter(adapter);

并在微调器中添加新的自定义适配器:

and add the new custom adapter in the spinner :

MultiSpinner mMultiSpinner = (MultiSpinner) findViewById(R.id.multispinner);
mMultiSpinner.setAdapter(mCustomArrayAdapter);

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