public class MainActivity extends Activity {
/** Called when the activity is first created. */
private Button loginBtn;
private Button registerBtn;
private EditText inputUsername;
private EditText inputPassword;
private CheckBox saveInfoItem;
private ProgressDialog mDialog;
private String responseMsg = "";
private static final int REQUEST_TIMEOUT = 5*1000;//设置请求超时5秒钟
private static final int SO_TIMEOUT = 10*1000; //设置等待数据超时时间10秒钟
//private static final int LOGIN_OK = 1;
private SharedPreferences sp;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
loginBtn = (Button)findViewById(R.id.login_btn_login);
registerBtn = (Button)findViewById(R.id.login_btn_zhuce);
inputUsername = (EditText)findViewById(R.id.login_edit_account);
inputPassword = (EditText)findViewById(R.id.login_edit_pwd);
CheckNetworkState();
loginBtn.setOnClickListener(new Button.OnClickListener()
{
@Override
public void onClick(View arg0) {
mDialog = new ProgressDialog(MainActivity.this);
mDialog.setTitle("登陆");
mDialog.setMessage("正在登陆服务器，请稍后...");
mDialog.show();
Thread loginThread = new Thread(new LoginThread());
loginThread.start();
}
});
registerBtn.setOnClickListener(new Button.OnClickListener()
{
@Override
public void onClick(View arg0) {
Intent intent = new Intent();
intent.setClass(MainActivity.this, Zhuce.class);
startActivity(intent);
}
});
}
private boolean loginServer(String username, String password)
{
boolean loginValidate = false;
//使用apache HTTP客户端实现
String urlStr = "http://192.168.1.101:8080/login/LoginServlet";
HttpPost request = new HttpPost(urlStr);
//如果传递参数多的话，可以丢传递的参数进行封装
List<NameValuePair> params = new ArrayList<NameValuePair>();
//添加用户名和密码
params.add(new BasicNameValuePair("username",username));
params.add(new BasicNameValuePair("password",password));
try
{
//设置请求参数项
request.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
HttpClient client = getHttpClient();
//执行请求返回相应
HttpResponse response = client.execute(request);
//判断是否请求成功
if(response.getStatusLine().getStatusCode()==200)
{
loginValidate = true;
//获得响应信息
responseMsg = EntityUtils.toString(response.getEntity());
}
}catch(Exception e)
{
e.printStackTrace();
}
return loginValidate;
}
//初始化HttpClient，并设置超时
public HttpClient getHttpClient()
{
BasicHttpParams httpParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParams, REQUEST_TIMEOUT);
HttpConnectionParams.setSoTimeout(httpParams, SO_TIMEOUT);
HttpClient client = new DefaultHttpClient(httpParams);
return client;
}
public void CheckNetworkState()
{
boolean flag = false;
ConnectivityManager manager = (ConnectivityManager)getSystemService(
Context.CONNECTIVITY_SERVICE);
State mobile = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();
State wifi = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();
//如果3G、wifi、2G等网络状态是连接的，则退出，否则显示提示信息进入网络设置界面
if(mobile == State.CONNECTED||mobile==State.CONNECTING)
return;
if(wifi == State.CONNECTED||wifi==State.CONNECTING)
return;
showTips();
}
private void showTips()
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setIcon(android.R.drawable.ic_dialog_alert);
builder.setTitle("没有可用网络");
builder.setMessage("当前网络不可用，是否设置网络？");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 如果没有网络连接，则进入网络设置界面
startActivity(new Intent(Settings.ACTION_WIRELESS_SETTINGS));
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
MainActivity.this.finish();
}
});
builder.create();
builder.show();
}
//Handler
Handler handler = new Handler()
{
public void handleMessage(Message msg)
{
switch(msg.what)
{
case 0:
mDialog.cancel();
Toast.makeText(getApplicationContext(), "登录成功！", Toast.LENGTH_SHORT).show();
Intent intent = new Intent();
intent.setClass(MainActivity.this, MainActivity.class);
startActivity(intent);
finish();
break;
case 1:
mDialog.cancel();
Toast.makeText(getApplicationContext(), "密码错误", Toast.LENGTH_SHORT).show();
break;
case 2:
mDialog.cancel();
Toast.makeText(getApplicationContext(), "URL验证失败", Toast.LENGTH_SHORT).show();
break;
}
}
};
//LoginThread线程类
class LoginThread implements Runnable
{
@Override
public void run() {
String username = inputUsername.getText().toString();
String password = inputPassword.getText().toString();
boolean checkstatus = sp.getBoolean("checkstatus", false);
if(checkstatus)
{
//获取已经存在的用户名和密码
String realUsername = sp.getString("username", "");
String realPassword = sp.getString("password", "");
if((!realUsername.equals(""))&&!(realUsername==null)||(!realPassword.equals(""))||!(realPassword==null))
{
if(username.equals(realUsername)&&password.equals(realPassword))
{
username = inputUsername.getText().toString();
password = inputPassword.getText().toString();
}
}
}else
{
password = md5(password);
}
System.out.println("username="+username+":password="+password);
//URL合法，但是这一步并不验证密码是否正确
boolean loginValidate = loginServer(username, password);
System.out.println("----------------------------bool is :"+loginValidate+"----------response:"+responseMsg);
Message msg = handler.obtainMessage();
if(loginValidate)
{
if(responseMsg.equals("success"))
{
msg.what = 0;
handler.sendMessage(msg);
}else
{
msg.what = 1;
handler.sendMessage(msg);
}
}else
{
msg.what = 2;
handler.sendMessage(msg);
}
}
}
/**
* MD5单向加密，32位，用于加密密码，因为明文密码在信道中传输不安全，明文保存在本地也不安全
* @param str
* @return
*/
public static String md5(String str)
{
MessageDigest md5 = null;
try
{
md5 = MessageDigest.getInstance("MD5");
}catch(Exception e)
{
e.printStackTrace();
return "";
}
char[] charArray = str.toCharArray();
byte[] byteArray = new byte[charArray.length];
for(int i = 0; i < charArray.length; i++)
{
byteArray[i] = (byte)charArray[i];
}
byte[] md5Bytes = md5.digest(byteArray);
StringBuffer hexValue = new StringBuffer();
for( int i = 0; i < md5Bytes.length; i++)
{
int val = ((int)md5Bytes[i])&0xff;
if(val < 16)
{
hexValue.append("0");
}
hexValue.append(Integer.toHexString(val));
}
return hexValue.toString();
}
}
出现什么问题你都没说啊？