Android RadioButton not able to unset using setChecked(false) method

问题

If I set a radio button to be selected on the first time, it works fine. But if I unselect it by calling ((RadioButton) findViewById(R.id.ID)).setChecked(false); then, later even if I try to make it selected by calling setChecked(true) will not work unless the user select it from the screen.

Have any one come across this? or is it only me?

        if(Val != null){
        if( ((RadioButton) findViewById(R.id.ID1)).getText().toString().trim().equals(Val))
        ((RadioButton) findViewById(R.id.ID1)).setChecked(true);
        else if(((RadioButton) findViewById(R.id.ID2)).getText().toString().trim().equals(Val))
        ((RadioButton) findViewById(R.id.ID2)).setChecked(true);
        }
        else {
            ((RadioButton) findViewById(R.id.ID1)).setChecked(false);
            ((RadioButton) findViewById(R.id.ID2)).setChecked(false);
        }

If the else part is executed atleast once then everything gets mess up. When I step thro my debugger, I can see the execution goes in the correct path and setting it to true. It is getting executed only once, I checked that. And I am not resetting it back to false in any other part of the code.

回答1:

I found the solution.

It is not possible to uncheck a particular radio button. You can only set the other item to true.

So to clear all the checked items, you should call the clearcheck() method on the RadioGroup.

So my else part is

        else {
            ((RadioGroup) findViewById(R.id.ID0)).clearCheck();
        }

回答2:

Take one invisible radio button and check it. All other radio buttons of group will be unchecked automatically..

来源：https://stackoverflow.com/questions/4035465/android-radiobutton-not-able-to-unset-using-setcheckedfalse-method

标签

android

radio-button

uncheck