// 创建会话页面的fragment
easeChatFragment = new EaseChatFragment();

// 获取环信id
hxid = getIntent().getExtras().getString(EaseConstant.EXTRA_USER_ID);
// 获取聊天类型
chatType = getIntent().getExtras().getInt(EaseConstant.EXTRA_CHAT_TYPE);
// 设置参数
easeChatFragment.setArguments(getIntent().getExtras());

// 替换
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fl_chat, easeChatFragment).commit();