Android RadioGroup 관련 사항

    public void addRadioButton(int size) {
        for (int i = 0; i < size; i++) {
            RadioButton radioButton = new RadioButton(this);
            RadioGroup.LayoutParams layoutParams = new RadioGroup.LayoutParams(RadioGroup.LayoutParams.MATCH_PARENT, DensityUtils.dip2px(36, TryActivity.this));
            layoutParams.setMargins(0, (int) DensityUtils.dip2px(12, TryActivity.this), 0, 0);
            radioButton.setLayoutParams(layoutParams);
            radioButton.setText(trialChilds.get(i).getTitle());
            radioButton.setTextSize(17);
            radioButton.setMaxLines(1);
            radioButton.setEllipsize(TextUtils.TruncateAt.END);
            radioButton.setButtonDrawable(android.R.color.transparent);//        
            radioButton.setBackground(ContextCompat.getDrawable(this, R.drawable.radio_trail_order_bg));
            radioButton.setGravity(Gravity.CENTER);
            radioButton.setPadding(0, 0, 0, 0);
            radioButton.setTextColor(ContextCompat.getColor(this, R.color.color7D7D7D));//    /        
            mRadioGroup.addView(radioButton);//        RadioGroup 
        }
    }

    "1.0" encoding="utf-8"?>
"http://schemas.android.com/apk/res/android">
    "@drawable/trail_good_unselect" android:state_checked="false" />
    "@drawable/trail_good_select" android:state_checked="true" />

"1.0" encoding="utf-8"?>
"http://schemas.android.com/apk/res/android">
    "@drawable/report_content_selected" android:state_checked="true" />
    //     
    "@drawable/report_content_unselect" android:state_checked="false" />
    //      
    "@drawable/report_content_unselect" />//    

radioButton3 = (RadioButton) findViewById(R.id.RadioButton3);
radioButton3.setButtonDrawable(ContextCompat.getDrawable(this, R.drawable.radiogroup_bg));

android:background="@color/transparent"