• xml

//布局
<RadioGroupandroid:id="@+id/rb"android:layout_width="match_parent"android:layout_height="44dp"android:orientation="horizontal"><RadioButtonandroid:id="@+id/rb_start"android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1"android:background="@drawable/selector_bg"android:button="@null"//去除圆心android:checked="true"//默认选中该buttonandroid:gravity="center"android:text="开始"android:textColor="@drawable/selector_text_color" /><RadioButtonandroid:id="@+id/rb_end"android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1"android:background="@drawable/selector_bg"android:button="@null"android:gravity="center"android:text="结束"android:textColor="@drawable/selector_text_color" />
</RadioGroup>//selector_text_color.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"><item android:color="#FF008577" android:state_checked="false" /><item android:color="#FFFFFFFF" android:state_checked="true" />
</selector>//selector_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"><item android:drawable="@drawable/shape_bg_true" android:state_checked="true" /><item android:drawable="@drawable/shape_bg_false" android:state_selected="false" />
</selector>//shape_bg_true.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"android:shape="rectangle"><solid android:color="#D81B60" /><corners android:radius="5dp" />
</shape>//shape_bg_false.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"android:shape="rectangle"><solid android:color="#008577" /><corners android:radius="5dp" />
</shape>

• 去除RadioButton圆心

//1.在xml布局中加入android:button="@null"
//2.某些机型上在xml中设置不会起作用,可以使用代码设置
rbEnd.setButtonDrawable(new StateListDrawable());

• 点击任意RadioButton只能选中固定的RadioButton

rb.setOnCheckedChangeListener((RadioGroup group, @IdRes int checkedId) -> {//点击某个RaidoButton的时候，RadioGroup会执行该回调方法，设置自己想要的button为选中状态.rb.check(R.id.rb_start);
});

• 使RadionButton失去点击效果

rbStart.setEnabled(false);

• 代码设置RadioButton的textColor属性,可以根据是否选中按钮展示不同颜色

int[][] states = new int[][]{new int[]{-android.R.attr.state_checked}, // uncheckednew int[]{android.R.attr.state_checked}  // checked
};
int[] colors = new int[]{0xFF000000,// unchecked0xFFFFFFFF,// checked
};
ColorStateList colorStateList = new ColorStateList(states, colors); 
rbStart.setTextColor(colorStateList);
rbEnd.setTextColor(colorStateList);

示例