我有一项活动,我需要根据互联网状态运行。问题是结构。我在 //其他代码中有很多行......
我想将它们放在onCreate()中,而不是在handleMessage()中。但我不知道该怎么做。
我正在寻找的结构:
need a new thread like below:
boolean xxxx() {
judge internet;
if internet is ok, return ok;
else return bad;
}
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// codes...
if (xxxx().equals("bad")) return;
// other codes...
}
}
我必须使用的结构:
Runnable newTread = new Runnable() {
@Override
public void run() {
// judge net statements
msg.obj = num;
handler.sendMessage(msg);
}
};
Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.num) {
case internet is ok: // other codes...
case internet is bad: do nothing
}
}
};
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// codes...
Thread t= new Thread(newTread);
t.start();
}
}