在主线程上使用SFML public class MainActivity extends AppCompatActivity {
int ts;
TextView score;
Button submit;
RadioGroup grp1, grp2, grp3;
RadioButton bt1, bt2, bt3, bt4, bt5, bt6, bt7, bt8;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
score = (TextView) findViewById(R.id.score);
submit = (Button) findViewById(R.id.submit);
grp1 = (RadioGroup) findViewById(R.id.grp1);
grp2 = (RadioGroup) findViewById(R.id.grp2);
grp3 = (RadioGroup) findViewById(R.id.grp3);
bt1 =(RadioButton) findViewById(R.id.radioButton);
bt2 =(RadioButton) findViewById(R.id.radioButton2);
bt3 =(RadioButton) findViewById(R.id.radioButton3);
bt4 =(RadioButton) findViewById(R.id.radioButton4);
bt5 =(RadioButton) findViewById(R.id.radioButton5);
bt6 =(RadioButton) findViewById(R.id.radioButton6);
bt7 =(RadioButton) findViewById(R.id.radioButton7);
bt8 =(RadioButton) findViewById(R.id.radioButton8);
submit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
grp1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int checkedId) {
View Button = grp1.findViewById(checkedId);
int index = grp1.indexOfChild(Button);
switch (index) {
case 0:
break;
case 1:
break;
case 2:
break;
case 3:
ts++;
break;
}
}
});
grp2.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int checkedId) {
View Button = grp2.findViewById(checkedId);
int index = grp2.indexOfChild(Button);
switch (index) {
case 0:
break;
case 1:
break;
case 2:
break;
case 3:
ts++;
break;
}
}
});
grp3.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int checkedId) {
View Button = grp3.findViewById(checkedId);
int index = grp3.indexOfChild(Button);
switch (index) {
case 0:
ts++;
break;
case 1:
break;
case 2:
break;
case 3:
break;
}
}
});
calculate();
}
});
}
private void calculate (){
score.setText(""+ts);
}
}
时，如何立即停止TcpListener功能？例如，如果我希望能够收到TcpListener::accept()并清理一下。为此，我需要能够使SIGINT函数返回Disconnected或Error。
答案 0 :(得分：0)
感谢Sean Cline建议non-blocking mode和selectors。
作为参考，SFML / Networking中的函数（我不确定它的其他组件）默认是阻塞的，这意味着它们在完成其目的之前不会返回（在我的情况下接受TCP连接）。通过使用non-blocking mode，函数将立即返回，返回其状态。对于TcpListener::accept()，如果有连接被接受并且它已成功完成任务，它将返回sf::Socket::Status::Done。否则，它可能会返回sf::Socket::Status::Disconnected或sf::Socket::Status::NotReady。
对于selectors，它们允许您在单个线程上管理多个套接字，并且在您不知道哪个将首先发送数据时特别有用。