Android 材质按钮切换组

I'm creating a form in android which asks for gender. To get this input I use Material Button Toggle Group which contains two buttons. I don't know how to know which button is clicked in my activity.java. How to get to know about the selected button in my activity so that i can save the details in different database.myxml.xml <com.google.android.material.button.MaterialButtonToggleGroup android:id="@+id/toggleButton" android:layout_width="wrap_content" android:layout_height="wrap_content" app:singleSelection="true"> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Male" android:layout_marginStart="5dp" style="?attr/materialButtonOutlinedStyle"/> <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Female" android:layout_marginStart="10dp" style="?attr/materialButtonOutlinedStyle"/> </com.google.android.material.button.MaterialButtonToggleGroup>Myactivity.java MaterialButtonToggleGroup toggleButton = findViewById(R.id.toggleButton); toggleButton.addOnButtonCheckedListener(); // I CAN'T FIND ANY PROPER SOLUTION 解决方案 You can use the getCheckedButtonId() method.Something like:MaterialButtonToggleGroup materialButtonToggleGroup = findViewById(R.id.toggleButton);int buttonId = materialButtonToggleGroup.getCheckedButtonId();MaterialButton button = materialButtonToggleGroup.findViewById(buttonId);Only if you need a listener you can use the addOnButtonCheckedListener:materialButtonToggleGroup.addOnButtonCheckedListener(new MaterialButtonToggleGroup.OnButtonCheckedListener() { @Override public void onButtonChecked(MaterialButtonToggleGroup group, int checkedId, boolean isChecked) { if (isChecked) { if (checkedId == R.id.button1) { //.. } } }});You have to check the checkedId value but also the isChecked value. The same listener is called when you check a button but also when you unckeck a button.It means that if you click the button1 the listener is called with isChecked=true and checkedId=1. Then if you click the button2 the listener is called twice. Once with isChecked=false and checkedId=1, once with isChecked=true and checkedId=2. 这篇关于Android 材质按钮切换组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！