How to get the checked radiobutton from a groupbox

问题:

I have a groupbox with some radiobuttons. How do I get to know which one which is checked.

回答1:

Another way is to use button groups. For example:

import sys
from PyQt4.QtGui import *
from PyQt4.QtCore import *

class MoodExample(QGroupBox):

    def __init__(self):
        super(MoodExample, self).__init__()

        # Create an array of radio buttons
        moods = [QRadioButton("Happy"), QRadioButton("Sad"), QRadioButton("Angry")]

        # Set a radio button to be checked by default
        moods[0].setChecked(True)   

        # Radio buttons usually are in a vertical layout   
        button_layout = QVBoxLayout()

        # Create a button group for radio buttons
        self.mood_button_group = QButtonGroup()

        for i in xrange(len(moods)):
            # Add each radio button to the button layout
            button_layout.addWidget(moods[i])
            # Add each radio button to the button group & give it an ID of i
            self.mood_button_group.addButton(moods[i], i)
            # Connect each radio button to a method to run when it's clicked
            self.connect(moods[i], SIGNAL("clicked()"), self.radio_button_clicked)

        # Set the layout of the group box to the button layout
        self.setLayout(button_layout)

    #Print out the ID & text of the checked radio button
    def radio_button_clicked(self):
        print(self.mood_button_group.checkedId())
        print(self.mood_button_group.checkedButton().text())

app = QApplication(sys.argv)
mood_example = MoodExample()
mood_example.show()
sys.exit(app.exec_())

I found more information at:

http://codeprogress.com/python/libraries/pyqt/showPyQTExample.php?index=387&key=QButtonGroupClick

http://www.pythonschool.net/pyqt/radio-button-widget/

回答2:

you will need to iterate through all the radio buttons in the groupbox and check for the property isChecked() of each radiobox.

eg:

radio1 = QtGui.QRadioButton("button 1")
radio2 = QtGui.QRadioButton("button 2")
radio3 = QtGui.QRadioButton("button 3")

for i in range(1,4):
    buttonname = "radio" + str(i)
    if buttonname.isChecked():
        print buttonname + "is Checked"

for reference, check http://pyqt.sourceforge.net/Docs/PyQt4/qradiobutton.html

回答3:

I managed to work around this problem by using a combination of index and loop.

indexOfChecked = [self.ButtonGroup.buttons()[x].isChecked() for x in range(len(self.ButtonGroup.buttons()))].index(True)

回答4:

    def izle(self):
        radios=["radio1","radio2","radio3","radio4"]

        for i in range(0,4):
            selected_radio = self.ui.findChild(QtGui.QRadioButton, self.radios[i])
            if selected_radio.isChecked():
                print selected_radio.objectName() + "is Checked"