面向企业应用的Android开发从入门到精通

privatevoidinit(){
//读取SharedPreferences中需要的数据
//使用SharedPreferences来记录登陆用户参数
SharedPreferencespreferences=getSharedPreferences(
LOGIN_PARAMETER,MODE_PRIVATE);

//初始化是否记住密码
booleanrememberMe=preferences.getBoolean(REMEMBER_ME,false);
if(rememberMe){
mRememberMeView.setChecked(true);
}
//初始化用户名
Stringusername=preferences.getString(USER_NAME,"");
if(!username.isEmpty()){
mUsernameView.setText(username);
}
//初始化密码
Stringpassword=preferences.getString(PASSWORD,"");
if(!password.isEmpty()){
mPasswordView.setText(password);
}
//初始化服务地址
StringserverAddress=preferences.getString(SERVER_ADDRESS,"");
if(!serverAddress.isEmpty()){
mServerAddressView.setText(serverAddress);
}

}

mSettingView=(TextView)findViewById(R.id.btnSetting);
mSettingView.setOnClickListener(newOnClickListener(){
@Override
publicvoidonClick(Viewview){
if(mServerAddressLayout.getVisibility()==View.VISIBLE){
mServerAddressLayout.setVisibility(View.INVISIBLE);
}else{
mServerAddressLayout.setVisibility(View.VISIBLE);
}
mServerAddressLayout.refreshDrawableState();
}
});

@Override
protectedBooleandoInBackground(Void...params){
Stringurl="";
if(mServerAddress.startsWith("http://")||mServerAddress.startsWith("https://")){
url=mServerAddress+"/authenticate.m";
}else{
url="http://"+mServerAddress+"/authenticate.m";
}

HttpPosthttpPost=newHttpPost(url);
List<NameValuePair>httpparams=newArrayList<NameValuePair>();
httpparams.add(newBasicNameValuePair("userid",mUsername));
httpparams.add(newBasicNameValuePair("password",mPassword));
try{
httpPost.setEntity(newUrlEncodedFormEntity(httpparams,HTTP.UTF_8));
HttpResponsehttpResponse=newDefaultHttpClient().execute(httpPost);
if(httpResponse.getStatusLine().getStatusCode()==200){
Stringresult=EntityUtils.toString(httpResponse
.getEntity());
JSONObjectresultJson=newJSONObject(result);
StringuserId=resultJson.getJSONArray("body").getJSONObject(0).getString("userId");

GlobalData.setUserId(userId);
GlobalData.setUsername(mUsername);

SharedPreferencespreferences=getSharedPreferences(
LOGIN_PARAMETER,Context.MODE_PRIVATE);
SharedPreferences.Editoreditor=preferences.edit();
//存入数据
editor.putString(SERVER_ADDRESS,mServerAddress);
//存入数据
editor.putString(USER_NAME,mUsername);

if(mRememberMe){
//存入数据
editor.putBoolean(REMEMBER_ME,mRememberMe);
//存入数据
editor.putString(PASSWORD,mPassword);
}else{
//存入数据
editor.putBoolean(REMEMBER_ME,false);
//存入数据
editor.putString(PASSWORD,"");
}

//提交修改
editor.commit();
}
}catch(Exceptione){
returnfalse;
}

returntrue;
}

@Override
protectedvoidonPostExecute(finalBooleansuccess){
mAuthTask=null;
showProgress(false);

if(success){
Intentintent=newIntent(LoginActivity.this,MainActivity.class);//从登陆页跳到主页
startActivity(intent);
LoginActivity.this.finish();
}else{
mPasswordView.setError(getString(R.string.error_incorrect_password));
mPasswordView.requestFocus();
}
}

主页

//WebView
WebViewbrowser=(WebView)findViewById(R.id.webView);

//设置可自由缩放网页
browser.getSettings().setSupportZoom(true);
browser.getSettings().setBuiltInZoomControls(true);

//设置支持JS
browser.getSettings().setJavaScriptEnabled(true);

//如果页面中链接，如果希望点击链接继续在当前browser中响应，
//而不是新开Android的系统browser中响应该链接，必须覆盖webview的WebViewClient对象
browser.setWebViewClient(newWebViewClient(){
publicbooleanshouldOverrideUrlLoading(WebViewview,Stringurl){
//重写此方法表明点击网页里面的链接还是在当前的webview里跳转，不跳到浏览器那边
view.loadUrl(url);
returntrue;
}
});

//实现页面上传附件功能
browser.setWebChromeClient(newWebChromeClient(){
//Theundocumentedmagicmethodoverride
//Eclipsewillswearatyouifyoutrytoput@Overridehere
//ForAndroid3.0+
publicvoidopenFileChooser(ValueCallback<Uri>uploadMsg){

mUploadMessage=uploadMsg;
Intenti=newIntent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
MainActivity.this.startActivityForResult(Intent.createChooser(i,"FileChooser"),FILECHOOSER_RESULTCODE);

}

//ForAndroid3.0+
publicvoidopenFileChooser(ValueCallbackuploadMsg,StringacceptType){
mUploadMessage=uploadMsg;
Intenti=newIntent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
MainActivity.this.startActivityForResult(
Intent.createChooser(i,"FileBrowser"),
FILECHOOSER_RESULTCODE);
}

//ForAndroid4.1
publicvoidopenFileChooser(ValueCallback<Uri>uploadMsg,StringacceptType,Stringcapture){
mUploadMessage=uploadMsg;
Intenti=newIntent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
startActivityForResult(Intent.createChooser(i,"FileChooser"),FILECHOOSER_RESULTCODE);

}

});

//实现页面下载附件功能，基于浏览器实现
browser.setDownloadListener(newDownloadListener(){
@Override
publicvoidonDownloadStart(Stringurl,StringuserAgent,StringcontentDisposition,Stringmimetype,
longcontentLength){
Uriuri=Uri.parse(url);
Intentintent=newIntent(Intent.ACTION_VIEW,uri);
startActivity(intent);
}
});

@Override
protectedvoidonActivityResult(intrequestCode,intresultCode,
Intentintent){
if(requestCode==FILECHOOSER_RESULTCODE){
if(null==mUploadMessage)return;
Uriresult=intent==null||resultCode!=RESULT_OK?null
:intent.getData();
mUploadMessage.onReceiveValue(result);
mUploadMessage=null;
}
}

synCookies(getBaseContext(),url,"userId="+userId);

browser.loadUrl(url);

/**
*同步一下cookie
*/
publicstaticvoidsynCookies(Contextcontext,Stringurl,Stringvalue){
CookieManagercookieManager=CookieManager.getInstance();
cookieManager.setAcceptCookie(true);
cookieManager.setCookie(url,value);//cookies是在HttpClient中获得的cookie
Log.d("cookie",cookieManager.getCookie(url));
}

@Override
protectedvoidonNewIntent(Intentintent){
super.onNewIntent(intent);
setIntent(intent);//必须要调用这句
openUrl();
}

@Override
protectedvoidonStart(){
super.onStart();
//读取SharedPreferences中需要的数据
//使用SharedPreferences来记录登陆用户参数
SharedPreferencespreferences=getSharedPreferences(
LOGIN_PARAMETER,MODE_PRIVATE);

//获取服务器地址
StringmServerAddress=preferences.getString(SERVER_ADDRESS,"");
Stringurl="http://"+mServerAddress+"/index.html";
//获取用户id
userId=(String)GlobalData.getUserId();
//WebView
WebViewbrowser=(WebView)findViewById(R.id.webView);
booleandetailed=false;
synCookies(getBaseContext(),url,"userId="+");
//获取推送消息附属信息
XGPushClickedResultclick=XGPushManager.onActivityStarted(this);
if(click!=null){
StringcustomContent=click.getCustomContent();
//获取自定义key-value
if(customContent!=null&&customContent.length()!=0){
try{
JSONObjectjson=newJSONObject(customContent);
if(json.get("messageType")!=null&&json.get("relativeId")!=null){
indexUrl=indexUrl
+"?messageType="+json.getString("messageType")
+"&relateId="+json.getString("relativeId");
browser.loadUrl(indexUrl);
detailed=true;
}

}catch(JSONExceptione){
e.printStackTrace();
}
}
}

if(!detailed){
Intentintent=newIntent(MessageActivity.this,MainActivity.class);//从欢迎页跳到登陆页
startActivity(intent);
MessageActivity.this.finish();
}

}