Android(安卓)RadioGroup动态添加RadioButton，设置margin

有时需要在RadioGroup中动态添加RadioButton

1.如果不做设置，那么RadioButton之间就会贴在一起，动态设置margin

2.必须给RadioButton添加ID，否则默认选中的选项会一直是选中状态

        RadioGroup rg= (RadioGroup) view.findViewById(R.id.rg_layout_radioButton);//横向        for (int i = 0; i < mTextArray.length; i++) {            //radioButton            RadioButton radioButton = new RadioButton(context);            int dimension = (int) (getResources().getDimension(R.dimen.qb_px_10)+0.5f);//会自动转化为像素值            radioButton.setPadding(dimension,0,0,0);            radioButton.setButtonDrawable(R.drawable.selector_icon_31_32);            radioButton.setText(mTextArray[i]);            radioButton.setTextColor(getResources().getColor(R.color.white));            //必须有ID，否则默认选中的选项会一直是选中状态            radioButton.setId(i);            if (i==mTextArray.length-1){                //默认选中                radioButton.setChecked(true);            }            //layoutParams 设置margin值            RadioGroup.LayoutParams layoutParams = new RadioGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,                    ViewGroup.LayoutParams.WRAP_CONTENT);            if (i!=0){                int i1 = (int) (getResources().getDimension(R.dimen.qb_px_40) + 0.5f);                layoutParams.setMargins(i1,0,0,0);            }else {                layoutParams.setMargins(0,0,0,0);            }            //注意这里addView()里传入layoutParams            rg.addView(radioButton,layoutParams);        }

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