第一个Android登录页面 | HTTP 请求验证登录 | 完整代码
16lz
2022-05-29
目录结构和页面效果
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> login.xml
<?xml version="1.0" encoding="utf-8"?> register.xml
<?xml version="1.0" encoding="utf-8"?> values/string.xml
测试登录 Login Register Username Password Great, you\'ve logged in! AndroidMainfest.xml
<?xml version="1.0" encoding="utf-8"?> MainActivity.java
package com.fzq;import android.content.DialogInterface;import android.content.Intent;import android.os.AsyncTask;import android.os.Bundle;import android.support.v7.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.EditText;import com.Config;import com.Utils;import com.fzq.myapplicationt2.R;import java.io.InputStream;import java.net.URL;import java.net.URLConnection;public class MainActivity extends AppCompatActivity { private EditText username; private EditText password; private UserLoginTask mAuthTask = null; private boolean hadLogin = false; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //login button findViewById(R.id.loginButton).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { String user = username.getText().toString(); String pass = password.getText().toString(); mAuthTask = new UserLoginTask(user, pass); mAuthTask.execute((Void) null); } }); username = findViewById(R.id.username); password = findViewById(R.id.password); //register button findViewById(R.id.password).setOnClickListener(new View.OnClickListener() { public void onClick(View view) { //提示框确定是否跳转 new AlertDialog.Builder(MainActivity.this).setTitle("Jump").setMessage("Ready to jump?") .setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Intent intent = new Intent(MainActivity.this, Register.class); startActivity(intent); } }) .setNegativeButton("No", null) .show(); } }); } /** * Represents an asynchronous login/registration task used to authenticate * the user. */ public class UserLoginTask extends AsyncTask { private final String username; private final String password; public UserLoginTask(String username, String password) { this.username = username; this.password = password; } @Override protected Boolean doInBackground(Void... params) { // TODO: attempt authentication against a network service. try {// Config.serverIp=serverHostView.getText().toString();// Config.serverPort=Integer.parseInt(serverPortView.getText().toString());// controller路径+参数 URL url = new URL(Config.getServerUri() + "/casemgr/control/ajaxLogin?USERNAME=" + username + "¤tPassword=" + password); URLConnection conn = url.openConnection(); conn.connect(); InputStream inputStream = conn.getInputStream(); } catch (Exception e) { e.printStackTrace(); return false; } // TODO: register the new account here. return true; } @Override protected void onPostExecute(final Boolean success) { mAuthTask = null; if (success) { MainActivity.this.hadLogin = true; Utils.toast(MainActivity.this, "登陆成功"); /* 第一个参数:上下文对象this 第二个参数:目标文件 */ Intent intent = new Intent(MainActivity.this,LoginActivity.class); startActivity(intent); } else { MainActivity.this.hadLogin = false; Utils.toast(MainActivity.this, "登陆失败"); } } @Override protected void onCancelled() { mAuthTask = null; } }} LoginActivity.java
package com.fzq;import android.os.Bundle;import android.support.v7.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import com.SerialPortUtil;import com.SerialUtil;import com.fzq.myapplicationt2.R;import com.mq.MqCommand;import com.mq.MqttListener;import com.mq.MqttManager;import com.util.Debug;import org.fusesource.mqtt.client.Callback;import java.util.Map;public class LoginActivity extends AppCompatActivity { public static final String tag = LoginActivity.class.getName(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.login);// lockerListener(); }/* public void lockerListener() { MqttListener listener =null; try { listener = MqttManager.getListener("locker" + "listener");// System.out.println(listener); } catch (Exception e) { e.printStackTrace(); } Debug.logInfo("开始监听服务器命令", tag);// final SerialPortUtil serialPortUtil = new SerialPortUtil("ttyUSB0", 9600, null); listener.addReceiveHandlers(MqCommand.commandTopic, new Callback() { @Override public void onSuccess(Object o) { Map map= SerialUtil.deSerial((byte[]) o);// serialPortUtil.sendSerialPort((byte[]) map.get("hardwareId")); new AlertDialog.Builder(LoginActivity.this).setTitle("Success!") .setMessage("监听到的数据："+map.get("hardwareId")) .setNegativeButton("OK",null) .show(); } @Override public void onFailure(Throwable throwable) { } }); try { listener.start(); } catch (Exception e) { e.printStackTrace(); } }*/}Login.java
package com.fzq;import android.os.Bundle;import android.support.v7.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import com.SerialPortUtil;import com.SerialUtil;import com.fzq.myapplicationt2.R;import com.mq.MqCommand;import com.mq.MqttListener;import com.mq.MqttManager;import com.util.Debug;import org.fusesource.mqtt.client.Callback;import java.util.Map;public class LoginActivity extends AppCompatActivity { public static final String tag = LoginActivity.class.getName(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.login);// lockerListener(); }/* public void lockerListener() { MqttListener listener =null; try { listener = MqttManager.getListener("locker" + "listener");// System.out.println(listener); } catch (Exception e) { e.printStackTrace(); } Debug.logInfo("开始监听服务器命令", tag);// final SerialPortUtil serialPortUtil = new SerialPortUtil("ttyUSB0", 9600, null); listener.addReceiveHandlers(MqCommand.commandTopic, new Callback() { @Override public void onSuccess(Object o) { Map map= SerialUtil.deSerial((byte[]) o);// serialPortUtil.sendSerialPort((byte[]) map.get("hardwareId")); new AlertDialog.Builder(LoginActivity.this).setTitle("Success!") .setMessage("监听到的数据："+map.get("hardwareId")) .setNegativeButton("OK",null) .show(); } @Override public void onFailure(Throwable throwable) { } }); try { listener.start(); } catch (Exception e) { e.printStackTrace(); } }*/}Register.java
package com.fzq;import android.app.Activity;import android.os.Bundle;import com.fzq.myapplicationt2.R;public class Register extends Activity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.register); }}更多相关文章
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