android登录和设置IP/端口功能

本人第一个android开发功能：登录以及设置IP/端口。

本人是j2ee开发工程师，所以这个可能有一些处理不太完善的地方，欢迎评论在下面，我会认真改进的。

首先是配置strings.xml文件添加用到的参数：res/values/strings.xml

<resources><!-- 登录 --><string name="login_name">帐号：</string><string name="login_pwd">密码：</string><string name="remember_pwd">记住密码</string><string name="auto_login">自动登录</string><string name="login">登录</string><string name="setting">设置</string><string name="ip">IP：</string><string name="port">端口：</string><string name="is_logining_in">正在登录...</string><string name="login_http_error">网络异常，请重新登录</string></resources>

其次是布局文件：res/layout/activity_login.xml（背景图片不提供）

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" android:background="@drawable/login_background">    <LinearLayout android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal"android:layout_weight="1"></LinearLayout>        <LinearLayout android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"android:layout_weight="1">    <LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:gravity="center"><TextView android:textSize="8pt"     android:id="@+id/tv_login_name"     android:text="@string/login_name"android:layout_width="wrap_content" android:layout_height="wrap_content"android:textAppearance="@style/AppTheme"android:textColor="@color/black"/>　　      　　      <EditText android:id="@+id/et_login_name"android:layout_width="200dp"android:layout_height="wrap_content"android:inputType="text"android:singleLine="true"/></LinearLayout>          <LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:gravity="center">　　      　　      <TextView android:textSize="8pt" android:id="@+id/tv_password" android:text="@string/login_pwd"android:layout_width="wrap_content" android:layout_height="wrap_content"android:textColor="@color/black"/>      <EditText android:id="@+id/et_password"android:layout_width="200dp"android:layout_height="wrap_content"android:inputType="textPassword"android:singleLine="true"/></LinearLayout>    <LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="vertical"android:gravity="center"><CheckBox android:id="@+id/cb_remember_pwd"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/remember_pwd"android:textColor="@color/black" /><CheckBox android:id="@+id/cb_auto_login"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/auto_login"android:textColor="@color/black" /></LinearLayout></LinearLayout><LinearLayout android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal"android:layout_weight="1"android:gravity="center"><Button android:text="@string/login" android:textSize="9pt" android:id="@+id/btn_login" android:layout_width="wrap_content" android:layout_height="wrap_content"/>　　   <Button android:text="@string/cancel" android:textSize="9pt" android:id="@+id/btn_cancel" android:layout_width="wrap_content" android:layout_height="wrap_content"/><Button android:text="@string/setting" android:textSize="9pt" android:id="@+id/btn_setting" android:layout_width="wrap_content" android:layout_height="wrap_content"/></LinearLayout></LinearLayout>

再来是主要的activity：LoginActivity.java

package com.chinawiserv.itsm.android;import java.util.ArrayList;import java.util.List;import java.util.Properties;import org.apache.http.NameValuePair;import org.apache.http.message.BasicNameValuePair;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import com.chinawiserv.itsm.android.app.Itsm;import com.chinawiserv.itsm.android.util.HttpUtil;import com.chinawiserv.itsm.android.util.PropertiesUtil;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.os.Looper;import android.os.Message;import android.view.LayoutInflater;import android.view.Menu;import android.view.View;import android.view.ViewGroup;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.EditText;import android.widget.Toast;import android.widget.CompoundButton.OnCheckedChangeListener;public class LoginActivity extends BaseActivity implements OnClickListener {private EditText etLoginName, etPassword;private Button btnLogin, btnCancel, btnSetting;private CheckBox cbRememberPwd, cbAutoLogin;private String loginNameValue, passwordValue;private Bundle loginBundle = new Bundle();// 传递数据private Properties properties;// 保存登录配置信息private ProgressDialog pd;// 访问接口等待进度条private EditText et_host, et_port;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_login);findViews();setListeners();// 判断记住密码多选框的状态if ("true".equals(properties.getProperty("isRememberPwd"))) {cbRememberPwd.setChecked(true);etLoginName.setText(properties.getProperty("loginName"));etPassword.setText(properties.getProperty("pwd"));// 判断自动登陆多选框状态if ("true".equals(properties.getProperty("isAutoLogin"))) {// 设置默认是自动登录状态cbAutoLogin.setChecked(true);// 跳转界面login();}}// 监听记住密码多选框按钮事件cbRememberPwd.setOnCheckedChangeListener(new OnCheckedChangeListener() {public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {if (cbRememberPwd.isChecked()) {// 记住密码properties.setProperty("isRememberPwd", "true");} else {// 取消记住密码同时取消记住自动登录cbAutoLogin.setChecked(false);properties.setProperty("isRememberPwd", "false");properties.setProperty("isAutoLogin", "false");}}});// 监听自动登录多选框事件cbAutoLogin.setOnCheckedChangeListener(new OnCheckedChangeListener() {public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {if (cbAutoLogin.isChecked()) {// 自动登录同时记住密码cbRememberPwd.setChecked(true);properties.setProperty("isRememberPwd", "true");properties.setProperty("isAutoLogin", "true");} else {// 取消自动登录properties.setProperty("isAutoLogin", "false");}}});}private void findViews() {properties = PropertiesUtil.loadConfig(LoginActivity.this);// 加载资源信息etLoginName = (EditText) findViewById(R.id.et_login_name);etPassword = (EditText) findViewById(R.id.et_password);cbRememberPwd = (CheckBox) findViewById(R.id.cb_remember_pwd);cbAutoLogin = (CheckBox) findViewById(R.id.cb_auto_login);btnLogin = (Button) findViewById(R.id.btn_login);btnCancel = (Button) findViewById(R.id.btn_cancel);btnSetting = (Button) findViewById(R.id.btn_setting);}private void setListeners() {btnLogin.setOnClickListener(LoginActivity.this);btnCancel.setOnClickListener(LoginActivity.this);btnSetting.setOnClickListener(LoginActivity.this);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.activity_login, menu);return true;}@Overridepublic void onClick(View v) {int id = v.getId();switch (id) {case R.id.btn_login:// 监听登录按钮事件Itsm.HOST = properties.getProperty("userHost");Itsm.PORT = properties.getProperty("userPort");if (Itsm.HOST == null || "".equals(Itsm.HOST) || Itsm.PORT == null || "".equals(Itsm.PORT)) {Toast.makeText(LoginActivity.this, R.string.ipAndPortIsNull, Toast.LENGTH_LONG).show();} else {login();}break;case R.id.btn_cancel:// 监听取消按钮事件finish();break;case R.id.btn_setting:// 监听设置按钮事件showAlertDialog();break;default:break;}}/** 弹出对话框 */public void showAlertDialog() {LayoutInflater inflater = getLayoutInflater();View layout = inflater.inflate(R.layout.activity_config,(ViewGroup) findViewById(R.id.dialog));et_host = (EditText) layout.findViewById(R.id.et_host);et_port = (EditText) layout.findViewById(R.id.et_port);String userHost = properties.getProperty("userHost");String userPort = properties.getProperty("userPort");if (userHost != null && !"".equals(userHost) && userPort != null && !"".equals(userPort)) {et_host.setText(userHost.substring(7));et_port.setText(userPort);}new AlertDialog.Builder(this).setTitle("设置").setView(layout).setPositiveButton("确定", setSureDialogListener()).setNegativeButton("取消", setCancelDialogListener()).show();}/** 设置弹出框取消事件 */public android.content.DialogInterface.OnClickListener setCancelDialogListener() {return new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}};}/** 设置弹出框确定事件 */public android.content.DialogInterface.OnClickListener setSureDialogListener() {return new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {try {CharSequence hostValue = et_host.getText();CharSequence portValue = et_port.getText();if (hostValue != null && portValue != null) {Itsm.HOST = "http://" + hostValue.toString();Itsm.PORT = portValue.toString();properties.setProperty("userHost", Itsm.HOST);properties.setProperty("userPort", Itsm.PORT);PropertiesUtil.saveConfig(LoginActivity.this, properties);dialog.dismiss();} else {Toast.makeText(LoginActivity.this, getString(R.string.ipAndPortIsNull), Toast.LENGTH_LONG).show();}} catch (NumberFormatException e) {e.printStackTrace();}}};}Handler handler = new Handler() {@Overridepublic void handleMessage(final Message msg) {super.handleMessage(msg);switch (msg.what) {case 0:Bundle errorBundle = (Bundle) msg.obj;int error = errorBundle.getInt("error");String errorMsg = errorBundle.getString("errorMsg");Toast.makeText(LoginActivity.this, "错误编号：" + error + "\n错误信息：" + errorMsg, Toast.LENGTH_LONG).show();break;case 1:Bundle successBundle = (Bundle) msg.obj;Intent toMainActivityIntent = new Intent();toMainActivityIntent.putExtras(successBundle);toMainActivityIntent.setClass(LoginActivity.this, IndexActivity.class);startActivity(toMainActivityIntent);break;case -1:Toast.makeText(LoginActivity.this,getText(R.string.login_http_error), Toast.LENGTH_LONG).show();break;default:break;}}};private void login() {loginNameValue = etLoginName.getText().toString();passwordValue = etPassword.getText().toString();if (loginNameValue == null || "".equals(loginNameValue)) {Toast.makeText(LoginActivity.this, "请先输入帐号！", Toast.LENGTH_LONG).show();} else if (passwordValue == null || "".equals(passwordValue)) {Toast.makeText(LoginActivity.this, "请先输入密码！", Toast.LENGTH_LONG).show();} else {final String loginInUrl = Itsm.HOST + Itsm.COLON + Itsm.PORT + Itsm.LOGIN_IN;pd = ProgressDialog.show(LoginActivity.this, "", getString(R.string.is_logining_in));new Thread() {public void run() {Looper.prepare();List<NameValuePair> params = new ArrayList<NameValuePair>();params.add(new BasicNameValuePair("loginName", loginNameValue));params.add(new BasicNameValuePair("pwd", passwordValue));Message msg = new Message();try {String loginResult = HttpUtil.doPost(params, loginInUrl);JSONObject loginJson = new JSONObject(loginResult);boolean flag = loginJson.getBoolean("flag");if (!flag) {int error = loginJson.getInt("error");String errorMsg = loginJson.getString("errorMsg");loginBundle.putInt("error", error);loginBundle.putString("errorMsg", errorMsg);msg.what = 0;} else {/** 登录成功判断是否记住密码和自动登录 */if (cbRememberPwd.isChecked()) {properties.setProperty("isRememberPwd", "true");properties.setProperty("loginName", loginNameValue);properties.setProperty("pwd", passwordValue);}if (cbAutoLogin.isChecked()) {properties.setProperty("isAutoLogin", "true");}PropertiesUtil.saveConfig(LoginActivity.this,properties);// 登录成功才保存资源信息msg.what = 1;String userId = loginJson.getString("userId");String userName = loginJson.getString("userName");String orgId = loginJson.getString("orgId");JSONArray roleJson = loginJson.getJSONArray("roles");Itsm.USER_ID = userId;Itsm.ORG_ID = orgId;loginBundle.putString("userId", userId);loginBundle.putString("userName", userName);loginBundle.putString("orgId", orgId);loginBundle.putString("roleJson", roleJson.toString());}msg.obj = loginBundle;handler.sendMessage(msg);} catch (JSONException e) {msg.what = -1;handler.sendMessage(msg);e.printStackTrace();} finally {pd.dismiss();Looper.loop();}}}.start();}}}

其中自定义的：HttpUtil.java

package com.chinawiserv.itsm.android.util;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.List;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.params.HttpConnectionParams;import org.apache.http.params.HttpParams;import org.apache.http.protocol.HTTP;import org.apache.http.util.EntityUtils;import android.util.Log;import com.chinawiserv.itsm.android.app.Itsm;public class HttpUtil {public static String doPost(List<NameValuePair> params, String url) {HttpPost post = new HttpPost(url);String str = "";Log.d(Itsm.TAG, "调用post请求方法，请求接口为：" + url);HttpClient httpClient = new DefaultHttpClient();HttpParams params1 = httpClient.getParams();HttpConnectionParams.setConnectionTimeout(params1, 10000);HttpConnectionParams.setSoTimeout(params1, 15000);try {post.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));HttpResponse response = httpClient.execute(post);Log.d(Itsm.TAG, "状态：" + response.getStatusLine().getStatusCode());if (response.getStatusLine().getStatusCode() == 200) {str = EntityUtils.toString(response.getEntity(), "UTF-8");Log.d(Itsm.TAG, "结果：" + str);}} catch (UnsupportedEncodingException e) {e.printStackTrace();return Itsm.HTTP_ERROR;} catch (ClientProtocolException e) {e.printStackTrace();return Itsm.HTTP_ERROR;} catch (IOException e) {e.printStackTrace();return Itsm.HTTP_ERROR;}return str;}}

自定义的：PropertiesUtil.java

package com.chinawiserv.itsm.android.util;import java.io.FileOutputStream;import java.io.InputStream;import java.util.Properties;import android.content.Context;public class PropertiesUtil {public static Properties loadConfig(Context context) {Properties properties = new Properties();InputStream s = null;try {s = context.openFileInput("itsm_cfg.properties");properties.load(s);} catch (Exception e) {e.printStackTrace();}return properties;}public static void saveConfig(Context context, Properties properties) {try {FileOutputStream s = context.openFileOutput("itsm_cfg.properties",Context.MODE_PRIVATE);properties.store(s, "");} catch (Exception e) {e.printStackTrace();}}}

至于Itsm，其中只是定义了一些参数，可以声明在当前的LoginActivity里面：

public static final String HTTP_ERROR = "-1";//访问链接错误
public static String HOST = "http://192.168.1.157";
public static String COLON = ":";
public static String PORT = "8090";
public static final String LOGIN_IN = "/itsm/http/loginMobLoginResultAction.action";//接口链接

这个接口里面只是一个简单的登录功能，就不贴出来了。

希望这些简单的布局以及简单的登录功能，可以帮上初学者，因为我也是刚摸索出来的。