android RadioGroup設置某一個被選中

見碼滾

                mPriorityRadioGroup.clearCheck();
                mStatusRadioGroup.clearCheck();
                RadioButton r1 = (RadioButton)findViewById(R.id.statusNotDone);
                r1.setChecked(true);
                RadioButton r2 = (RadioButton)findViewById(R.id.medPriority);
                r2.setChecked(true);