android登录功能，android登录


简单的登录逻辑代码

[1].[代码] [Java]代码 跳至 [1]

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 package com.example.mifi;   import java.util.HashMap; import java.util.Map;   import org.json.JSONObject;   import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText;   import com.example.mifi.utils.DialogUtil; import com.example.mifi.utils.HttpUtil;   public class Login extends Activity {     EditText etName, etPass;     Button bnLogin, bnCancel;       public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.login);           etName = (EditText) findViewById(R.id.userEditText);         etPass = (EditText) findViewById(R.id.pwdEditText);           bnLogin = (Button) findViewById(R.id.bnLogin);         bnCancel = (Button) findViewById(R.id.bnCancel);           bnLogin.setOnClickListener(new OnClickListener() {             public void onClick(View v) {                 if (!validate())                     return;                 if (loginPro()) {                     Intent intent = new Intent(Login.this, Main.class);                     startActivity(intent);                     finish();                     return;                 }                 DialogUtil.showDialog(Login.this, "用户名或密码错误,请重新输入!", false);             }           });     }       /**      * 验证登录帐号      */     private boolean loginPro() {         String username = etName.getText().toString().trim();         String password = etPass.getText().toString().trim();         JSONObject jsonObj;         try {             jsonObj = Query(username, password);             if (jsonObj.getBoolean("success"))                 return true;         } catch (Exception e) {             DialogUtil.showDialog(this, "服务器响应异常，请稍后再试!", false);             e.printStackTrace();         }         return false;     }       /**      * 验证用户名密码      */     private JSONObject Query(String username, String password) throws Exception {         Map<String, String> map = new HashMap<String, String>();         map.put("username", username);         map.put("password", password);         String url = HttpUtil.BASE_URL + "client/login/";         return new JSONObject(HttpUtil.doPost(url, map));     }       /**      * 输入为空      */     private boolean validate() {         String username = etName.getText().toString().trim();         String password = etPass.getText().toString().trim();         if ("".equals(username)) {             DialogUtil.showDialog(this, "请输入用户名!", false);             return false;         }         if ("".equals(password)) {             DialogUtil.showDialog(this, "请输入用户密码!", false);             return false;         }         return true;     }   }

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