在Retrofit调用后更改折叠工具栏标题

// 假设你的折叠工具栏实例名为collapsingToolbarLayout
collapsingToolbarLayout.setTitle("新的标题");

Call<YourResponseModel> call = yourApiService.yourApiMethod();
call.enqueue(new Callback<YourResponseModel>() {
    @Override
    public void onResponse(Call<YourResponseModel> call, Response<YourResponseModel> response) {
        if (response.isSuccessful()) {
            // 请求成功，获取到结果
            YourResponseModel result = response.body();
            
            // 更改折叠工具栏标题
            collapsingToolbarLayout.setTitle("新的标题");
        } else {
            // 请求失败，处理错误信息
        }
    }

    @Override
    public void onFailure(Call<YourResponseModel> call, Throwable t) {
        // 请求失败，处理错误信息
    }
});