设置的ListView行高度code [英] Set ListView row height in code

问题描述

我有与ListView的基础上SimpleCursorAdapter和一个按钮的活动。 我想我按一下按钮，行高变大。 我决定使用TextView的高度这一点。 在按钮的OnClick：

I have got an activity with ListView based on SimpleCursorAdapter and a button. I want I click the button and row height gets bigger. I decided to use TextView height for this. in button OnClick:

TextView tvRow = (TextView) findViewById(R.id.tvRow);
tvRow.setHeight(20);

但它改变了一个列表，只有第一行。

but it changes only first row of a list.

我可以在适配器改变高度，在getView方法

I can change height in Adapter, in getView method

TextView tvRow = (TextView) view.findViewById(R.id.tvRow);
tvRow.setHeight(20);

但它不是正确的我需要什么，我需要这样的按钮的OnClick。

but it is not correctly what I need, I need this in button OnClick.

如何通过按钮来更改的ListView行高度？ 可能连一招:) 感谢您的时间。

How can I change ListView Row height by button? May be even a trick :) Thank you for your time.

UPD

当我不喜欢这样的code SimpleCursorAdapter everithing工作正常，但在BaseAdapter方法​​getView：

When I do like this in code SimpleCursorAdapter everithing works fine, but in method getView in BaseAdapter:

@Override
  public View getView(int position, View convertView, ViewGroup parent) {
   View view = convertView;
if (view == null) {
  view = lInflater.inflate(R.layout.itemF, parent, false);
}
...   
 final LayoutParams params = view.getLayoutParams();
            if (params == null) { 
                view.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, mRowHeight)); 
        }else { 
        params.height = mRowHeight; }
return view;

在列表中显示只是忽略这一点，它的行宽留原件。什么是错的？..

the list at display just ignore this and its row width stay original. What is wrong?..

UPD：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/llRow"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<CheckBox
    android:id="@+id/cbBox"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

<LinearLayout
    android:id="@+id/llRow1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:paddingTop="5dp" >

    <TextView
        android:id="@+id/tvName"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Наименование фирмы"
        android:textAllCaps="true"
        android:textSize="14dp" />

    <TextView
        android:id="@+id/tvAddr"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Адрес фирмы"
        android:textSize="10dp" />
</LinearLayout>

推荐答案

我想你一定恰克<一href="http://developer.android.com/reference/android/widget/CursorAdapter.html#getView%28int,%20android.view.View,%20android.view.ViewGroup%29">getView()方法你的 SimpleCursorAdapter ，像这样的：

I think you must chage getView() method of your SimpleCursorAdapter, like this:

final SimpleCursorAdapter adapter = new SimpleCursorAdapter (context, cursor) {
    @Override
    public View getView (int position, View convertView, ViewGroup parent) {
        final View view = super.getView(position, convertView, parent);
        final TextView text = (TextView) view.findViewById(R.id.tvRow);
        final LayoutParams params = text.getLayoutParams();

        if (params != null) {
                params.height = mRowHeight;
        }

        return view;
    }
}

当你点击的按钮，必须更改 mRowHeight 并通知的ListView 约样改变 adapter.notifyDataSetChanged（）。对于第一个值 mRowHeight 您可以设置这样的：

When you click on your button, you must change mRowHeight and notify ListView about changes like adapter.notifyDataSetChanged(). For the first value of mRowHeight you can set this:

mRowHeight = LayoutParams.WRAP_CONTENT

UPD：

如果方法<一href="http://developer.android.com/reference/android/widget/BaseAdapter.html#hasStableIds%28%29">hasStableIds()你的 BaseAdapter 返回假（它返回假默认）必须适用于变化不大的 getView（）（你必须设置的LayoutParams 您查看手动）：

If method hasStableIds() of your BaseAdapter return false (it return false as default) you must apply little changes in your getView() (you must set LayoutParams to your View manually):

LayoutParams params = view.getLayoutParams();
if (params == null) { 
    params = new LayoutParams(LayoutParams.MATCH_PARENT, mRowHeight); 
} else {
    params.height = mRowHeight;
}

view.setLayoutParams(params);

这篇关于设置的ListView行高度code的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！