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我想在这样的android工作室做POST请求。如何在Android Studio中执行HTTP POST请求?
btnSignin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//submitForm();
tryLogin("[email protected]", "Test1234");
}
});
protected void tryLogin(String mUsername, String mPassword)
{
HttpURLConnection connection;
OutputStreamWriter request = null;
URL url = null;
String response = null;
String parameters = "email="+mUsername+"&password="+mPassword;
StrictMode.ThreadPolicy policy = new
StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
try
{
url = new URL("URL");
connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestMethod("POST");
request = new OutputStreamWriter(connection.getOutputStream());
request.write(parameters);
request.flush();
request.close();
String line = "";
InputStreamReader isr = new InputStreamReader(connection.getInputStream());
BufferedReader reader = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
// Response from server after login process will be stored in response variable.
response = sb.toString();
// You can perform UI operations here
Toast.makeText(this,"Message from Server: \n"+ response, 0).show();
isr.close();
reader.close();
}
catch(IOException e)
{
// Error
}
但应用程序崩溃,我得到这样的错误 -
致命异常:主要
过程:测试,PID:19928在
android.os.NetworkOnMainThreadException android.os.StrictMode $ AndroidBlockGuardPolicy.onNetwork(StrictMode.java:> 1425)
在java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:102)
我已经在清单文件中添加Internet权限。 这是因为我没有通过AsyncTask完成它? 我该如何解决这个问题?
使用的AsyncTask ..... –
你不能在主线程上执行网络操作..所以你要使用asynctask – AbhayBohra
使用单独的线程进行网络操作。 asynctask在这种情况下很容易 – AAA