代码:

Bitmap a = null;

//顶部按钮

for (int i = 0; i < topTitles.length; i++) {

RadioButton tempButton = new RadioButton(getActivity());

tempButton.setButtonDrawable(null); // 设置按钮的样式

tempButton.setText(topTitles[i]);

tempButton.setId(i);

tempButton.setTextSize(15);

tempButton.setButtonDrawable(new BitmapDrawable(a));

tempButton.setPadding(30, 0, 30, 0);

tempButton.setBackgroundResource(R.drawable.channel_title_selector);

tempButton.setTextColor(R.drawable.channel_text_color_selector);//不起作用

tempButton.setGravity(Gravity.CENTER);

RadioGroup.LayoutParams lp = new RadioGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,

ViewGroup.LayoutParams.WRAP_CONTENT);

lp.setMargins(15, 0, 15, 0);//设置RadioButton的边距

mRadioGroup.addView(tempButton, lp);

if (i == 0) {

mRadioGroup.check(tempButton.getId());

}

}