1.报错:
- Permission denied (missing INTERNET permission?) 没有网络权限
原因:我添加的是上面的那个(不懂有什么区别…)

解决:换成下面的就行了
<uses-permission android:name="android.permission.INTERNET" />
- POST请求(提交键值对)//新大陆云平台登录
public void zxq(String ml){
new Thread(() -> {
OkHttpClient ok=new OkHttpClient();
MediaType mediaType=MediaType.parse("application/json; charset=utf-8");
RequestBody requestBody=RequestBody.create(mediaType,ml);
Log.i("text",token);
Request request=new Request.Builder()
.url("http://api.nlecloud.com/Cmds?deviceId=68529&apiTag=wwrhszytfigr")
.post(requestBody)
.header("AccessToken",token)
.build();
try {
Response response=ok.newCall(request).execute();
String body=response.body().string();
Log.i("text",body);
} catch (IOException e) {
e.printStackTrace();
}
}).start();
}