如何对单选按钮的 3x3 网格进行分组? [英] How to group a 3x3 grid of radio buttons?
问题描述
正如标题所描述的，我试图将一个 3x3 单选按钮的网格分组到一个单选组中.在上一个问题中，我了解到要使单选按钮与单个组对应，它们必须是它们将对应的单选组的直接子项.当我试图将整个表格布局(表格行中的单选按钮)封装在一个单选组中时，我学到了这一点.
As the title describes, I'm trying to group up a grid of 3x3 radio buttons into a single radio group. In a previous question asked I learned that for radio buttons to correspond to a single group they had to be the immediate children of the radio group to which they will correspond. I learned this the hard way when I attempted to encapsulate an entire table layout (with the radio buttons in the table rows) in a radio group.
撞到那堵墙，我尝试了以下方法:
Running into that wall, I tried the following:
<TableLayout android:id="@+id/table_radButtons"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/title_radGroup_buffer">
<TableRow>
<RadioGroup android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="@+id/radGroup1">
<RadioButton android:id="@+id/rad1"
android:text="Button1"
android:layout_width="105px"
android:layout_height="wrap_content"
android:textSize="13px"></RadioButton>
<RadioButton android:id="@+id/rad2"
android:text="Button2"
android:layout_width="105px"
android:textSize="13px"
android:layout_height="wrap_content"></RadioButton>
<RadioButton android:id="@+id/rad3"
android:text="Button3"
android:layout_width="105px"
android:textSize="13px"
android:layout_height="wrap_content"></RadioButton>
</RadioGroup>
</TableRow>
<TableRow>
<RadioGroup android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="@+id/radGroup1">
<!-- snippet -->
</TableRow>
<!-- snippet --->
</TableLayout>
显然我第一次没有学到，因为我又撞到了墙.我希望不同表格行中的单选按钮会注意到它们属于同一个单选组(为每个组分配相同的 ID)，但这不起作用.
Obviously I didn't learn the first time because I ran into a wall again. I was hoping that the radio buttons in different table rows would notice that they were part of the same radio group (gave each group the same ID) but this didn't work.
有什么办法可以将所有这些按钮组合到一个单选组中，并且仍然保持我的 3x3 结构(3 行，每行 3 个单选按钮)?
Is there any way I can group all of these buttons into a single radio group and still maintain my 3x3 structure (3 rows, 3 radio buttons in each row)?
推荐答案
实际上，如果你像这个例子中那样子类化 TableLayout 并没有那么难
Actually it's not that hard if you subclass TableLayout like in this example
/**
*
*/
package com.codtech.android.view;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.RadioButton;
import android.widget.TableLayout;
import android.widget.TableRow;
/**
* @author diego
*
*/
public class ToggleButtonGroupTableLayout extends TableLayout implements OnClickListener {
private static final String TAG = "ToggleButtonGroupTableLayout";
private RadioButton activeRadioButton;
/**
* @param context
*/
public ToggleButtonGroupTableLayout(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
/**
* @param context
* @param attrs
*/
public ToggleButtonGroupTableLayout(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
}
@Override
public void onClick(View v) {
final RadioButton rb = (RadioButton) v;
if ( activeRadioButton != null ) {
activeRadioButton.setChecked(false);
}
rb.setChecked(true);
activeRadioButton = rb;
}
/* (non-Javadoc)
* @see android.widget.TableLayout#addView(android.view.View, int, android.view.ViewGroup.LayoutParams)
*/
@Override
public void addView(View child, int index,
android.view.ViewGroup.LayoutParams params) {
super.addView(child, index, params);
setChildrenOnClickListener((TableRow)child);
}
/* (non-Javadoc)
* @see android.widget.TableLayout#addView(android.view.View, android.view.ViewGroup.LayoutParams)
*/
@Override
public void addView(View child, android.view.ViewGroup.LayoutParams params) {
super.addView(child, params);
setChildrenOnClickListener((TableRow)child);
}
private void setChildrenOnClickListener(TableRow tr) {
final int c = tr.getChildCount();
for (int i=0; i < c; i++) {
final View v = tr.getChildAt(i);
if ( v instanceof RadioButton ) {
v.setOnClickListener(this);
}
}
}
public int getCheckedRadioButtonId() {
if ( activeRadioButton != null ) {
return activeRadioButton.getId();
}
return -1;
}
}
并创建一个这样的布局(当然你需要清理它但你有想法)
and create a layout like this (of course you need to clean it up but you got the idea)
<?xml version="1.0" encoding="utf-8"?>
<com.codtech.android.view.ToggleButtonGroupTableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:id="@+id/radGroup1">
<TableRow>
<RadioButton android:id="@+id/rad1" android:text="Button1"
android:layout_width="105px" android:layout_height="wrap_content"
android:textSize="13px" />
<RadioButton android:id="@+id/rad2" android:text="Button2"
android:layout_width="105px" android:textSize="13px"
android:layout_height="wrap_content" />
<RadioButton android:id="@+id/rad3" android:text="Button3"
android:layout_width="105px" android:textSize="13px"
android:layout_height="wrap_content" />
</TableRow>
<TableRow>
<RadioButton android:id="@+id/rad1" android:text="Button1"
android:layout_width="105px" android:layout_height="wrap_content"
android:textSize="13px" />
<RadioButton android:id="@+id/rad2" android:text="Button2"
android:layout_width="105px" android:textSize="13px"
android:layout_height="wrap_content" />
<RadioButton android:id="@+id/rad3" android:text="Button3"
android:layout_width="105px" android:textSize="13px"
android:layout_height="wrap_content" />
</TableRow>
<TableRow>
<RadioButton android:id="@+id/rad1" android:text="Button1"
android:layout_width="105px" android:layout_height="wrap_content"
android:textSize="13px" />
<RadioButton android:id="@+id/rad2" android:text="Button2"
android:layout_width="105px" android:textSize="13px"
android:layout_height="wrap_content" />
<RadioButton android:id="@+id/rad3" android:text="Button3"
android:layout_width="105px" android:textSize="13px"
android:layout_height="wrap_content" />
</TableRow>
</com.codtech.android.view.ToggleButtonGroupTableLayout>
这篇关于如何对单选按钮的 3x3 网格进行分组?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！
