How to use

setPadding

method

in

android.widget.RadioButton

radio.setLayoutParams(l);
radio.setGravity(Gravity.CENTER);
radio.setPadding(20, 20, 20, 20);

  @Override
  public void onCheckedChanged(RadioGroup group, int checkedId) {
    int radioButtonId = group.getCheckedRadioButtonId();
    // 根据ID获取RadioButton的实例
    RadioButton rb = (RadioButton) findViewById(radioButtonId);
    for (int i = 0; i < group.getChildCount(); i++) {
      RadioButton vradio = (RadioButton) group.getChildAt(i);
      vradio.setGravity(Gravity.CENTER);
      vradio.setPadding(20, 20, 20, 20);
      if (rb.getId() == vradio.getId()) {
        vradio.setTextColor(getResources().getColor(R.color.subject_select));
        vradio.setChecked(true);
        vradio.setBackground(getResources().getDrawable(R.drawable.bg_bottom));
      } else {
        vradio.setTextColor(getResources().getColor(R.color.kViewztblack));
        vradio.setChecked(false);
        vradio.setBackground(null);
      }
    }
    //           CustomProgress.show(mContext, true, null);
    kChartTimeInterval = titleList.get(checkedId - 1).get("time") + "";
    indexMarketChart();
  }
});

  /**
   * 创建子 tab
   *
   * @param context
   * @param id
   */
  public static RadioButton creatTabItem(Context context, int id, String text) {
    final int width = DensityUtil.dip2px(context, 80);
    final int height = DensityUtil.dip2px(context, 46);
    final int padding = DensityUtil.dip2px(context, 3);

    RadioButton button;
    button = new RadioButton(context);
    button.setId(id);
//        button.setWidth(width);
//        button.setHeight(height);
    button.setText(text);
    button.setLayoutParams(new LinearLayout.LayoutParams(width, height));
    button.setHeight(height);
    button.setBackgroundResource(R.drawable.tab_item_bg_selector);
    button.setButtonDrawable(context.getResources().getDrawable(android.R.color.transparent));
    button.setGravity(Gravity.CENTER);
    button.setTextColor(context.getResources().getColorStateList(R.color.tab_item_font_color_selector));
    button.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18);
    button.setPadding(0, 0, 0, padding);
    return button;
  }
}

newRadioButton.setPadding(mEntriesSidesPadding,
  mEntriesUpDownRadioPadding, mEntriesSidesPadding,
  mEntriesUpDownRadioPadding);

@Override
RadioGroup createWidgetView(AppCompatActivity activity) {
  radioGroup = new RadioGroup(activity);
  radioGroup.setPadding(16, 16, 16, 16);
  LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
  layoutParams.topMargin = 32;
  layoutParams.bottomMargin = 32;
  String[] values = getInputValues(activity.getIntent());
  for (int j = 0; j < values.length; ++j) {
    String value = values[j];
    RadioButton button = new RadioButton(activity);
    button.setText(value);
    button.setId(j);
    button.setTextSize(18);
    button.setPadding(16, 16, 16, 16);
    button.setLayoutParams(layoutParams);
    radioGroup.addView(button);
  }
  return radioGroup;
}