问题
I have two radio button in a radio group. I also have 2 androd:button checkbox- for when the radio button is deselected and checkbox_v for when he user selects the checkbox. I also implemnted that a method onRadioButtonClick in order to make sure that only one radio button had drawable:checkbox and the other has checkbox_v . How can I implemnt onRadioClick to do this? any idea?
public void onRadioButtonClick(View v)
{
RadioButton button = (RadioButton) v;
boolean checkBox1Selected;
boolean checkBox2Selected = false;
Toast.makeText(MainActivity.this,
button.getId()+ " was chosen."+R.id.wificheckBox,
Toast.LENGTH_SHORT).show();
if ( button.getId() ==R.id.wificheckBox) {
// Toggle status of checkbox selection
checkBox1Selected = radiowifiButton.isChecked();
// Ensure that other checkboxes are not selected
if (checkBox2Selected) {
radiomobileButton.setChecked(false);
checkBox2Selected = false;
}
else if (button.getId() ==R.id.wifimobilecheckBox) {
// Toggle status of checkbox selection
checkBox2Selected = radiomobileButton.isChecked();
// Ensure that other checkboxes are not selected
if (checkBox1Selected) {
radiowifiButton.setChecked(false);
checkBox1Selected = false;
}
}
}
main xml
<RadioGroup
android:id="@+id/radioGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/ll_1"
android:layout_marginLeft="20dp">
<LinearLayout
android:id="@+id/ll_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/ll_1"
android:layout_marginLeft="20dp"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/wifimobilecheckBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="@drawable/button_radio"
android:checked="true"
android:onClick="onRadioButtonClick" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/wificheckBox"
android:layout_toRightOf="@+id/wificheckBox"
android:paddingLeft="15dp"
android:text="WiFi or mobile network"
android:textColor="#333333"
android:textSize="20dp" />
</LinearLayout>
<LinearLayout
android:id="@+id/ll_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/ll_2"
android:paddingTop="20dp"
android:layout_marginLeft="20dp"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/wificheckBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="@drawable/button_radio"
android:onClick="onRadioButtonClick" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/wificheckBox"
android:layout_toRightOf="@+id/wificheckBox"
android:paddingLeft="15dp"
android:text="WiFi "
android:textColor="#333333"
android:textSize="20dp" />
</LinearLayout>
</RadioGroup>
Drawabe- button_radio
<item android:state_checked="true"android:state_pressed="false" android:drawable="@drawable/checkbox_v"/><item android:state_checked="false"android:state_pressed="false"'android:drawable="@drawable/checkbox"/>
回答1:
If they are in a radiogroup, only one can be selected at a time. If you want both to be able to be selected, remove them from the radiogroup.
回答2:
As the top voted answer didn't work for me as for many others. I am sharing the method that i used and its working perfectly.
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checkedButton="@+id/rb_female"
android:orientation="horizontal">
<RadioButton
android:id="@+id/rb_female"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="10dp"
android:layout_marginRight="10dp"
android:button="@drawable/selector_radio_button"
android:text="Female" />
<RadioButton
android:id="@+id/rb_male"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="@drawable/selector_radio_button"
android:text="Male" />
</RadioGroup>
Setting the android:checkedButton="@+id/rb_female" worked for me in RadioGroup.
回答3:
You should remove your onRadioButtonClick method and add OnCheckedChangeListener to your radiogroup. http://developer.android.com/reference/android/widget/RadioGroup.OnCheckedChangeListener.html
I guess by implementing your own click handler your are overwriting some functionality of the radiogroup.
回答4:
Your requirement is not clear. Would you mind to make it simpler. I tried my best to understand your requirements and these are the findings given below :(.
A radio button can have text. So you don't have to add another TextView in your layout. Please remove them and add a simple android:text="blah.. blah.." to your radiobutton.
With my understanding you have two doubts.
How to customize RadioButtons with custom drawables??
Checkout the answer here.
How to deselect the previously selected radiobutton??
The truth is you don't have to do it manually as you are keeping those radiobuttons into a single radiogroup.
Hope this will help you.
回答5:
To check/uncheck radio buttons not part of a RadioGroup, add a method in the android GUI designer under the RadioButton Properties 'onClick' (In this example radio1_onClick).
In your activity.xml under the xml for the RadioButton
RadioButton
[blah blah blah]
android:id="@+id/radio1"
android:onClick="radio1_onClick"
In your activity_main.xml you would write the following method.
private void radio1_onClick(View v)
{
CompoundButton b=(CompoundButton)findViewById(R.id.radio1);
b.setChecked(true); /* light the button */
//b.setChecked(false); /* unlight the button */
}
来源：https://stackoverflow.com/questions/10107532/only-one-radio-button-selected-at-a-time