Android --- RecycleView 中默认选择第一个 item，点击第 2 个 item 时改变其字体样式，其余的 item 的字体样式恢复默认(1)

//构造方法，传入数据

public SubjectListAdapter(Context context, List dataList){

this.context = context;

this.dataList = dataList;

}

@NonNull

@Override

public SubjectListAdapter.MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

View view = LayoutInflater.from(parent.getContext())

.inflate(R.layout.subject_item, parent, false);

MyViewHolder holder = new MyViewHolder(view);

return holder;

}

@Override

public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {

final String subjectString = dataList.get(position);

// 赋值

holder.tv_subject_name.setText(subjectString);

// 设置默认选择第一个

if (mPosition != position) {

holder.tv_subject_name.setTextSize(12);

holder.tv_subject_name.getPaint().setFakeBoldText(false);