有什么方法可以改变RadioButton的布局并且仍然让RadioGroup识别它吗?
我需要的是布局将包含几个EditText字段,以便当用户选择该按钮时这些字段变为活动状态。 我知道我可以基于LinearLayout构建自定义零件并使用以下方法设置我自己的布局: (LinearLayout)LayoutInflater.from(context).inflate(R.layout.my_layout,this,true) 但无法弄清楚如何用单选按钮做同样的事情。
我尝试过在RadioGroup之外添加额外字段并使用按钮排列它们的选项,但它根本不起作用。 它似乎与设备有关。
这就是原始布局的样子:
<RadioGroup
android:id="@+id/time_selector_radio_group"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@id/time_selector_hours_prompt"
android:layout_below="@id/time_selector_hours_prompt"
android:layout_alignParentRight="true"
android:gravity="right"
android:orientation="vertical"
android:checkedButton="@+id/time_selector_first_radio"
>
<RadioButton
android:id="@+id/time_selector_first_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dip"
android:button="@drawable/radio_button_selector"
/>
<RadioButton
android:id="@+id/time_selector_second_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dip"
android:button="@drawable/radio_button_selector"
/>
<RadioButton
android:id="@+id/time_selector_third_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dip"
android:button="@drawable/radio_button_selector"
/>
<RadioButton
android:id="@+id/time_selector_hours_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dip"
android:button="@drawable/radio_button_selector"
/>
</RadioGroup>
<TextView
android:id="@+id/time_selector_all_day_prompt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@id/time_selector_radio_group"
android:layout_below="@id/time_selector_hours_prompt"
android:layout_marginTop="11dip"
android:text="@string/time_all_day"
/>
<TextView
android:id="@+id/time_selector_before_noon_prompt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@id/time_selector_radio_group"
android:layout_below="@id/time_selector_all_day_prompt"
android:layout_marginTop="19dip"
android:text="@string/time_before_noon"
/>
<TextView
android:id="@+id/time_selector_after_noon_prompt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@id/time_selector_radio_group"
android:layout_below="@id/time_selector_before_noon_prompt"
android:layout_marginTop="19dip"
android:text="@string/time_after_noon"
/>
<TextView
android:id="@+id/time_selector_starting_time_prompt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@id/time_selector_starting_date_prompt"
android:layout_below="@id/time_selector_after_noon_prompt"
android:layout_marginTop="20dip"
android:layout_marginLeft="2dip"
android:text="@string/advanced_time_selector_dialog_starting_time_prompt"
/>
<EditText
android:id="@+id/time_selector_starting_time"
android:layout_width="@dimen/advanced_time_selector_edit_texts_width"
android:layout_height="wrap_content"
android:layout_alignRight="@id/time_selector_starting_date"
android:layout_alignBaseline="@id/time_selector_starting_time_prompt"
android:textSize="14sp"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:gravity="center"
android:singleLine="true"
android:maxWidth="@dimen/advanced_time_selector_edit_texts_width"
android:background="@drawable/text_field_bg"
android:inputType="datetime"
/>
<TextView
android:id="@+id/time_selector_ending_time_prompt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@id/time_selector_ending_date_prompt"
android:layout_alignBottom="@id/time_selector_starting_time_prompt"
android:layout_alignBaseline="@id/time_selector_starting_time_prompt"
android:layout_marginRight="2dip"
android:layout_marginLeft="2dip"
android:text="@string/ending_date_prompt"
/>
<EditText
android:id="@+id/time_selector_ending_time"
android:layout_width="@dimen/advanced_time_selector_edit_texts_width"
android:layout_height="wrap_content"
android:layout_alignRight="@id/time_selector_ending_date"
android:layout_alignBaseline="@id/time_selector_ending_time_prompt"
android:textSize="14sp"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:gravity="center"
android:singleLine="true"
android:maxWidth="@dimen/advanced_time_selector_edit_texts_width"
android:background="@drawable/text_field_bg"
android:inputType="datetime"
/>
请注意,该按钮没有任何文本,它会添加到TextView中,以便我们可以将其放在左侧。 发生的事情是文本正在“爬行”。
所以,我改变它看起来像这样:
<RadioGroup
android:id="@+id/time_selector_radio_group"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@id/time_selector_hours_prompt"
android:layout_below="@id/time_selector_hours_prompt"
android:layout_alignParentRight="true"
android:layout_marginRight="30dip"
android:gravity="right"
android:orientation="vertical"
android:checkedButton="@+id/time_selector_first_radio"
>
<RadioButton
android:id="@+id/time_selector_all_day_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dip"
android:button="@null"
android:drawableRight="@drawable/radio_button_selector"
android:text="@string/time_all_day"
android:textColor="@color/content_text_color"
/>
<RadioButton
android:id="@+id/time_selector_before_noon_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dip"
android:button="@null"
android:drawableRight="@drawable/radio_button_selector"
android:text="@string/time_before_noon"
android:textColor="@color/content_text_color"
/>
<RadioButton
android:id="@+id/time_selector_after_noon_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dip"
android:button="@null"
android:drawableRight="@drawable/radio_button_selector"
android:text="@string/time_after_noon"
android:textColor="@color/content_text_color"
/>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="@+id/time_selector_hours_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dip"
android:button="@null"
android:drawableRight="@drawable/radio_button_selector"
android:layout_alignParentRight="true"
android:text="@string/advanced_time_selector_dialog_starting_time_prompt"
android:textColor="@color/content_text_color"
android:layout_marginLeft="-1dip"
android:paddingLeft="-1dip"
/>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_toLeftOf="@id/time_selector_hours_radio"
android:layout_alignParentLeft="true">
<EditText
android:id="@+id/time_selector_starting_time"
android:layout_width="@dimen/advanced_time_selector_edit_texts_width"
android:layout_height="wrap_content"
android:textSize="14sp"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:gravity="center"
android:singleLine="true"
android:maxWidth="@dimen/advanced_time_selector_edit_texts_width"
android:background="@drawable/text_field_bg"
android:layout_alignParentRight="true"
android:layout_alignBaseline="@id/time_selector_hours_radio"
android:inputType="datetime"
/>
<TextView
android:id="@+id/time_selector_ending_time_prompt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="2dip"
android:layout_marginLeft="2dip"
android:text="@string/ending_date_prompt"
android:layout_alignBaseline="@id/time_selector_hours_radio"
android:layout_toLeftOf="@id/time_selector_starting_time"
/>
<EditText
android:id="@+id/time_selector_ending_time"
android:layout_width="@dimen/advanced_time_selector_edit_texts_width"
android:layout_height="wrap_content"
android:textSize="14sp"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:gravity="center"
android:singleLine="true"
android:maxWidth="@dimen/advanced_time_selector_edit_texts_width"
android:layout_toLeftOf="@id/time_selector_ending_time_prompt"
android:layout_alignBaseline="@id/time_selector_hours_radio"
android:background="@drawable/text_field_bg"
android:inputType="datetime"
/>
</RelativeLayout>
</RelativeLayout>
</RadioGroup>
它仍然不完美,当然,它不承认它是一个RadioGroup。
我想继续扩展RadioButton的方向,但不知道如何更改那里的布局。
答案 0 :(得分:8)
我写了一个名为RadioGroup
的自定义RadioGroupPlus
,它将遍历它的子项并找到RadioButton
,无论RadioButton
嵌套的深度如何,它都将链接所有RadioButton
一起找到了。
您可以在此处找到回购:https://github.com/worker8/RadioGroupPlus
回购的README
涵盖了如何使用它,它实际上就像你想象的那样,例如:
<worker8.com.github.radiogroupplus.RadioGroupPlus
android:id="@+id/radio_group_plus"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout...>
<ImageView...>
<TextView...>
<RadioButton...>
</LinearLayout>
<LinearLayout...>
<ImageView...>
<TextView...>
<RadioButton...>
</LinearLayout>
<LinearLayout...>
<ImageView...>
<TextView...>
<RadioButton...>
</LinearLayout>
</worker8.com.github.radiogroupplus.RadioGroupPlus>
会给你这样的东西:
在您的情况下,由于您已经拥有xml布局文件,请尝试按照guide here下载RadioGroupPlus
:
将此添加到顶级build.gradle:
allprojects {
repositories {
maven { url "https://jitpack.io" }
}
}
在依赖项下添加:
compile 'com.github.worker8:RadioGroupPlus:v1.0.1'
然后在您的xml中,将RadioGroup
更改为worker8.com.github.radiogroupplus.RadioGroupPlus
。现在,RadioButton
下的所有RadioGroupPlus
都应该链接在一起。
希望它有所帮助!
答案 1 :(得分:4)
您必须创建扩展RadioGroup的类,并覆盖 addView 和 PassThroughHierarchyChangeListener ,才能使用自定义布局你的单选按钮。默认情况下,RadioGroup假定其子节点是单选按钮,请参阅RadioGroup类中的以下代码:
@Override
public void addView(View child, int index, ViewGroup.LayoutParams params) {
if (child instanceof RadioButton) {
final RadioButton button = (RadioButton) child;
if (button.isChecked()) {
mProtectFromCheckedChange = true;
if (mCheckedId != -1) {
setCheckedStateForView(mCheckedId, false);
}
mProtectFromCheckedChange = false;
setCheckedId(button.getId());
}
}
super.addView(child, index, params);
}
private class PassThroughHierarchyChangeListener implements
ViewGroup.OnHierarchyChangeListener {
private ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener;
/**
* {@inheritDoc}
*/
public void onChildViewAdded(View parent, View child) {
if (parent == RadioGroup.this && child instanceof RadioButton) {
int id = child.getId();
// generates an id if it's missing
if (id == View.NO_ID) {
id = View.generateViewId();
child.setId(id);
}
((RadioButton) child).setOnCheckedChangeWidgetListener(
mChildOnCheckedChangeListener);
}
if (mOnHierarchyChangeListener != null) {
mOnHierarchyChangeListener.onChildViewAdded(parent, child);
}
}
/**
* {@inheritDoc}
*/
public void onChildViewRemoved(View parent, View child) {
if (parent == RadioGroup.this && child instanceof RadioButton) {
((RadioButton) child).setOnCheckedChangeWidgetListener(null);
}
if (mOnHierarchyChangeListener != null) {
mOnHierarchyChangeListener.onChildViewRemoved(parent, child);
}
}
}
答案 2 :(得分:1)
这个问题可能已经有十年了,但我放弃它是为了帮助陷入这种情况的其他人。
我使用 TextView
代替 Radio Button
并创建一个类来将它们分组,它可能是旧风格,但我发现它对我来说是最优雅和灵活的方式.
TextView 布局的 XML:
<RelativeLayout...>
<TextView... android:id="@+id/o1">
<TextView... android:id="@+id/o2">
<ImageView...>
<TextView... android:id="@+id/o3">
<TextView... android:id="@+id/o4">
</RelativeLayout>
ButtonGroup.java
import java.util.ArrayList;
...
public class ButtonGroup {
ArrayList<TextView> mOptions;
int cur=0;
int colorOn = Color.BLUE;
int colorOff = Color.GRAY;
ButtonGroup(ArrayList<TextView> options) {
mOptions = options;
}
public void turnOn(int i){
if(i!=cur){
TextView pre = mOptions.get(cur);
pre.setTextColor(colorOff);
cur=i;
}
TextView next = mOptions.get(i);
next.setTextColor(colorOn);
}
}
Activity的onCreate方法:
protected void onCreate(Bundle savedInstanceState) {
int current = 0;
ArrayList<TextView> optionList = new ArrayList<>();
optionList.add((TextView) findViewById(R.id.o1));
optionList.add((TextView) findViewById(R.id.o2));
optionList.add((TextView) findViewById(R.id.o3));
optionList.add((TextView) findViewById(R.id.o4));
ButtonGroup options = new ButtonGroup(optionList);
options.turnOn(current);
}
它会给出类似的东西