Android Open Source - student_travel_app Launch Activity

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License

The source code is released under:
Apache License
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Java Source Code

package com.piasy.simpletravel;
/*from www . ja va 2s  .  c o  m*/
import java.io.IOException;
import java.io.InputStream;

import org.json.JSONException;
import org.json.JSONObject;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.TextView;

//import com.baidu.mapapi.BMapManager;
//import com.baidu.mapapi.MKGeneralListener;
//import com.baidu.mapapi.map.MKEvent;
import com.piasy.simpletravel.controller.Controller;
import com.piasy.simpletravel.dao.DBManager;
import com.piasy.simpletravel.model.Constant;
import com.piasy.simpletravel.util.Util;

public class LaunchActivity extends Activity
{
    DBManager dbManager;
    Controller myController;
  EditText usernameEdit, passwordEdit;
  CheckBox rememberMe;
  TextView forgetPass, signupAccount;
  Button signinButton;
  String username = "INVALID";
  String password = "INVALID";
  boolean remember = false;
  
  @Override
  protected void onCreate(Bundle savedInstanceState)
  {
    Log.i(Constant.LOG_LEVEL_INFO, "Launch activity oncreate");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_welcome);

      myController = Controller.getController();
      Thread initThread = new Thread(initRunnable);
    initThread.start();
  }


  Runnable initRunnable = new Runnable()
  {
    
    @Override
    public void run()
    {
      Looper.prepare();

        AssetManager assetManager = getAssets();
      try
      {
        InputStream is = assetManager.open("id_rsa.pub");

          if (Util.init(is))
          {
          DBManager dbManager = new DBManager(getApplicationContext());
          myController.setDBManager(dbManager);
          myController.setActivityHandler(handler);
          
          SharedPreferences pref = getSharedPreferences(Constant.APP_PREF_NAME, 0);
          username = pref.getString("username", "INVALID");
          password = pref.getString("password", "NONE");
          remember = pref.getBoolean("remember", false);
          
          if (username.equals("INVALID") || password.length() < 6)
          {
            Message msg = Message.obtain();
            JSONObject info = new JSONObject();
            try
            {
              info.put("type", "init");
              msg.obj = info.toString();
              synchronized (handler)
              {
                handler.sendMessage(msg);
              }
            }
            catch (JSONException e)
            {
              e.printStackTrace();
            }
            
          }
          else
          {
            myController.verify(username, password);
          }
          }
          else
          {
            Controller.makeToast("???????????");
          System.exit(0);
        }
      }
      catch (IOException e)
      {
        e.printStackTrace();
      }
      
      Looper.loop();
    }
  };
  
  ProgressDialog dialog = null;
  protected void initUI()
  {
    setContentView(R.layout.activity_launch);
    
    usernameEdit = (EditText) findViewById(R.id.usernameEdit);
    passwordEdit = (EditText) findViewById(R.id.passwordEdit);
    rememberMe = (CheckBox) findViewById(R.id.remenberMe);
    signinButton = (Button) findViewById(R.id.signinButton);
    
    forgetPass = (TextView) findViewById(R.id.forgetPassword);
    signupAccount = (TextView) findViewById(R.id.signupAccount);

    rememberMe.setChecked(remember);
    if (!username.equals("INVALID"))
    {
      usernameEdit.setText(username);
      
      if (remember)
      {
        passwordEdit.setText("123456");
      }
    }
    
    rememberMe.setOnCheckedChangeListener(
        new CompoundButton.OnCheckedChangeListener()
    {
      
      @Override
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
      {
        remember = isChecked;
      }
    });
    
    signinButton.setOnClickListener(new View.OnClickListener()
    {
      
      @Override
      public void onClick(View v)
      {
        if (usernameEdit.getText().toString().equals(""))
        {
          Controller.makeToast("???????");
          return;
        }
        
        if (passwordEdit.getText().toString().equals(""))
        {
          Controller.makeToast("????????");
          return;
        }
        username = usernameEdit.getText().toString();
        password = passwordEdit.getText().toString();
        
        //salt hash
        password = Util.getSHA1Value(Util.getSHA1Value(username) + Util.getSHA1Value(password));
        
        verify();
      }
    });
    
    forgetPass.setOnClickListener(new View.OnClickListener()
    {
      
      @Override
      public void onClick(View v)
      {
        
      }
    });
    
    signupAccount.setOnClickListener(new View.OnClickListener()
    {
      
      @Override
      public void onClick(View v)
      {
        Intent signupIntent = new Intent(LaunchActivity.this, SignupActivity.class);
        startActivityForResult(signupIntent, 100);
      }
    });
  }
  
  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data)
  {
    super.onActivityResult(requestCode, resultCode, data);
    
    if (resultCode == Constant.SIGNUP_SUCCESS)
    {
      username = data.getExtras().getString("username");
      password = data.getExtras().getString("password");
      remember = true;
      verify();
    }
  }
  
  protected void verify()
  {
    myController.verify(username, password);
            
    dialog = new ProgressDialog(LaunchActivity.this);
    dialog.setMessage("?????????...");
    dialog.setIndeterminate(false);
    dialog.setCancelable(true);
    dialog.show();
  }
  
    @SuppressLint("HandlerLeak")
  Handler handler = new Handler()
  {
    public void handleMessage(Message msg)
    {
      Log.d(Constant.LOG_LEVEL_DEBUG, "get info at launch activity : " + (String)msg.obj);
      
      try
      {
        JSONObject info = new JSONObject((String)msg.obj);
        
        String type = info.getString("type");
        
        if (type.equals("verify"))
        {
          if (dialog != null)
          {
            dialog.cancel();
          }
          
          if (info.getString("result").equals("success"))
          {
            if (remember)
            {
              SharedPreferences pref = getSharedPreferences(Constant.APP_PREF_NAME, 0);
              SharedPreferences.Editor editor = pref.edit();
              editor.putString("username", username);
              editor.putString("password", password);
              editor.putBoolean("remember", remember);
              editor.commit();
            }
            Intent allPlanIntent = new Intent(LaunchActivity.this, AllPlanActivity.class);
            finish();
            startActivity(allPlanIntent);
          }
          else
          {
            if (!password.equals("NONE"))
            {
              Controller.makeToast(info.getString("reason"));
            }
            initUI();
          }
        }
        else if (type.equals("init"))
        {
          initUI();
        }
      }
      catch (JSONException e)
      {
        e.printStackTrace();
      }
    }
  };

  @Override
  protected void onResume()
  {
    super.onResume();
    myController.setActivityHandler(handler);
    
    System.out.println("LaunchActivity.onResume()");
    
    if (myController.exiting())
    {
      System.out.println("LaunchActivity.onResume()");
      finish();
    }
  }
  
  @Override  
    public boolean onKeyDown(int keyCode, KeyEvent event)  
    {  
        if (keyCode == KeyEvent.KEYCODE_BACK )  
        {  
          System.out.println("exit ...");
//            finish();
//          android.os.Process.killProcess(android.os.Process.myPid());
          System.out.println("before " + myController.exiting());
          myController.exit();
          System.out.println("after " + myController.exiting());
          finish();
        }  
          
        return false;  
          
    }  
}
Java Source Code List
