android获取网页数据的方法
2016-06-01 13:01
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1.android获取网页数据的方法：
//第一种
/**获取参数(ArrayList<NameValuePair> nameValuePairs,String url)后post给远程服务器
* 将获得的返回结果(String)返回给调用者
* 本函数适用于查询数量较少的时候
*/
public String posturl(ArrayList<NameValuePair> nameValuePairs,String url){
String result = "";
String tmp= "";
InputStream is = null;
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
return "Fail to establish http connection!";
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
tmp=sb.toString();
}catch(Exception e){
return "Fail to convert net stream!";
}
try{
JSONArray jArray = new JSONArray(tmp);
for(int i=0;i<jArray.length();i++){
JSONObject json_data = jArray.getJSONObject(i);
Iterator<?> keys=json_data.keys();
while(keys.hasNext()){
result += json_data.getString(keys.next().toString());
}
}
}catch(JSONException e){
return "The URL you post is wrong!";
}
return result;
}
//第二种
/**获取参数指定的网页代码，将其返回给调用者，由调用者对其解析
* 返回String
*/
public String posturl(String url){
InputStream is = null;
String result = "";
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
return "Fail to establish http connection!"+e.toString();
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}catch(Exception e){
return "Fail to convert net stream!";
}
return result;
}
//第三种
/**获取指定地址的网页数据
* 返回数据流
*/
public InputStream streampost(String remote_addr){
URL infoUrl = null;
InputStream inStream = null;
try {
infoUrl = new URL(remote_addr);
URLConnection connection = infoUrl.openConnection();
HttpURLConnection httpConnection = (HttpURLConnection)connection;
int responseCode = httpConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
inStream = httpConnection.getInputStream();
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return inStream;
2.Android中手机震动的设置（Vibrator）的步骤：
a、通过系统服务获得手机震动服务，Vibrator vibrator = (Vibrator)getSystemService(VIBRATOR_SERVICE);
b、得到震动服务后检测vibrator是否存在：
vibrator.hasVibrator();
检测当前硬件是否有vibrator，如果有返回true，如果没有返回false。
c、根据实际需要进行适当的调用，
vibrator.vibrate(long milliseconds);
开始启动vibrator持续milliseconds毫秒。
vibrator.vibrate(long[] pattern, int repeat);
以pattern方式重复repeat次启动vibrator。（pattern的形式为new long[]{arg1,arg2,arg3,arg4......},其中以两个一组的如arg1 和arg2为一组、arg3和arg4为一组，每一组的前一个代表等待多少毫 秒启动vibrator，后一个代表vibrator持续多少毫秒停止，之后往复即 可。Repeat表示重复次数，当其为-1时，表示不重复只以pattern的方 式运行一次）。
vibrator.cancel();
Vibrator停止。
http://www.apkbus.com/android-1807-1-1.html
3.Android如何使用读写cookie的方法
可以使用SharedPreferences或者SQLite来保存用户信息
private static HashMap<String,String> CookieContiner=new HashMap<String,String>() ;
/**
* 保存Cookie
* @param resp
*/
public void SaveCookies(HttpResponse httpResponse)
{
Header[] headers = httpResponse.getHeaders("Set-Cookie");
String headerstr=headers.toString();
if (headers == null)
return;
for(int i=0;i<headers.length;i++)
{
String cookie=headers[i].getValue();
String[]cookievalues=cookie.split(";");
for(int j=0;j<cookievalues.length;j++)
{
String[] keyPair=cookievalues[j].split("=");
String key=keyPair[0].trim();
String value=keyPair.length>1?keyPair[1].trim():"";
CookieContiner.put(key, value);
}
}
}
/**
* 增加Cookie
* @param request
*/
public void AddCookies(HttpPost request)
{
StringBuilder sb = new StringBuilder();
Iterator iter = CookieContiner.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
String val = entry.getValue().toString();
sb.append(key);
sb.append("=");
sb.append(val);
sb.append(";");
}
request.addHeader("cookie", sb.toString());
}
做了一个android网络应用，要求用自己实现的webview去访问web网站，并且在远程登录成功之后把cookie写入到手机，保留用作以后的自动登录。找了好多资料。发觉读取cookies倒还用的很普遍，可是通过程序写cookie却没有太多资料。
先来看一下如何读取cookie吧：
try
{
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("http://www.hlovey.com/");
HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
List<Cookie> cookies = httpclient.getCookieStore().getCookies();
if (entity != null) {
entity.consumeContent();
}
if (cookies.isEmpty()) {
Log.i(TAG, "NONE");
} else {
for (int i = 0; i < cookies.size(); i++) {
Log.i(TAG,"- domain " + cookies.get(i).getDomain());
Log.i(TAG,"- path " + cookies.get(i).getPath());
Log.i(TAG,"- value " + cookies.get(i).getValue());
Log.i(TAG,"- name " + cookies.get(i).getName());
Log.i(TAG,"- port " + cookies.get(i).getPorts());
Log.i(TAG,"- comment " + cookies.get(i).getComment());
Log.i(TAG,"- commenturl" + cookies.get(i).getCommentURL());
Log.i(TAG,"- all " + cookies.get(i).toString());
}
}
httpclient.getConnectionManager().shutdown();
}catch(Exception e){
//Todo
}finally{
//Todo
}
通过分析com.android.browser的源码，发现android默认的browser增加cookie是在数据库中增加记录，和window不同，win是采用一个txt文本文件的形式来存储cookie。而android是将cookie存储在数据库中。具体的介绍在《android cookie存储位置》一文中有介绍。我们都知道，android每个应用程序的存储空间都是独立的。不管使用preference还是database存储，都会在每个/data/data/package name/下面进行存储（preference存储在/data/data/package name/shared_prefs/xxxx.xml）。前面也说到cookie是存在数据库中，那么如果采用非浏览器访问网络需要保留cookie的话我们就应该在database中建立cookies表，并且存入相应的cookies数据。仿照默认broswer的代码：
/**声明一些数据库操作的常量*/
private static SQLiteDatabase mDatabase = null;
private static final String DATABASE_FILE = "webview.db";
private static final String COOKIES_NAME_COL = "name";
private static final String COOKIES_VALUE_COL = "value";
private static final String COOKIES_DOMAIN_COL = "domain";
private static final String COOKIES_PATH_COL = "path";
private static final String COOKIES_EXPIRES_COL = "expires";
private static final String COOKIES_SECURE_COL = "secure";
mDatabase = LoginApiActivity.this.openOrCreateDatabase(DATABASE_FILE, 0, null);
//创建cookie数据库
if (mDatabase != null) {
// cookies
mDatabase.execSQL("CREATE TABLE IF NOT EXISTS cookies "
+ " (_id INTEGER PRIMARY KEY, "
+ COOKIES_NAME_COL + " TEXT, " + COOKIES_VALUE_COL
+ " TEXT, " + COOKIES_DOMAIN_COL + " TEXT, "
+ COOKIES_PATH_COL + " TEXT, " + COOKIES_EXPIRES_COL
+ " INTEGER, " + COOKIES_SECURE_COL + " INTEGER" + ");");
mDatabase.execSQL("CREATE INDEX IF NOT EXISTS cookiesIndex ON "
+ "cookies" + " (path)");
}
}
/*写cookie*/
public void addCookie(Cookie cookie) {
if (cookie.getDomain() == null || cookie.getPath() == null || cookie.getName() == null
|| mDatabase == null) {
return;
}
String mCookieLock = "asd";
synchronized (mCookieLock) {
ContentValues cookieVal = new ContentValues();
cookieVal.put(COOKIES_DOMAIN_COL, cookie.getDomain());
cookieVal.put(COOKIES_PATH_COL, cookie.getPath());
cookieVal.put(COOKIES_NAME_COL, cookie.getName());
cookieVal.put(COOKIES_VALUE_COL, cookie.getValue());
mDatabase.insert("cookies", null, cookieVal);
}
}
1.android获取网页数据的方法：
//第一种
/**获取参数(ArrayList<NameValuePair> nameValuePairs,String url)后post给远程服务器
* 将获得的返回结果(String)返回给调用者
* 本函数适用于查询数量较少的时候
*/
public String posturl(ArrayList<NameValuePair> nameValuePairs,String url){
String result = "";
String tmp= "";
InputStream is = null;
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
return "Fail to establish http connection!";
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
tmp=sb.toString();
}catch(Exception e){
return "Fail to convert net stream!";
}
try{
JSONArray jArray = new JSONArray(tmp);
for(int i=0;i<jArray.length();i++){
JSONObject json_data = jArray.getJSONObject(i);
Iterator<?> keys=json_data.keys();
while(keys.hasNext()){
result += json_data.getString(keys.next().toString());
}
}
}catch(JSONException e){
return "The URL you post is wrong!";
}
return result;
}
//第二种
/**获取参数指定的网页代码，将其返回给调用者，由调用者对其解析
* 返回String
*/
public String posturl(String url){
InputStream is = null;
String result = "";
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
return "Fail to establish http connection!"+e.toString();
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}catch(Exception e){
return "Fail to convert net stream!";
}
return result;
}
//第三种
/**获取指定地址的网页数据
* 返回数据流
*/
public InputStream streampost(String remote_addr){
URL infoUrl = null;
InputStream inStream = null;
try {
infoUrl = new URL(remote_addr);
URLConnection connection = infoUrl.openConnection();
HttpURLConnection httpConnection = (HttpURLConnection)connection;
int responseCode = httpConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
inStream = httpConnection.getInputStream();
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return inStream;
2.Android中手机震动的设置（Vibrator）的步骤：
a、通过系统服务获得手机震动服务，Vibrator vibrator = (Vibrator)getSystemService(VIBRATOR_SERVICE);
b、得到震动服务后检测vibrator是否存在：
vibrator.hasVibrator();
检测当前硬件是否有vibrator，如果有返回true，如果没有返回false。
c、根据实际需要进行适当的调用，
vibrator.vibrate(long milliseconds);
开始启动vibrator持续milliseconds毫秒。
vibrator.vibrate(long[] pattern, int repeat);
以pattern方式重复repeat次启动vibrator。（pattern的形式为new long[]{arg1,arg2,arg3,arg4......},其中以两个一组的如arg1 和arg2为一组、arg3和arg4为一组，每一组的前一个代表等待多少毫 秒启动vibrator，后一个代表vibrator持续多少毫秒停止，之后往复即 可。Repeat表示重复次数，当其为-1时，表示不重复只以pattern的方 式运行一次）。
vibrator.cancel();
Vibrator停止。
http://www.apkbus.com/android-1807-1-1.html
3.Android如何使用读写cookie的方法
可以使用SharedPreferences或者SQLite来保存用户信息
private static HashMap<String,String> CookieContiner=new HashMap<String,String>() ;
/**
* 保存Cookie
* @param resp
*/
public void SaveCookies(HttpResponse httpResponse)
{
Header[] headers = httpResponse.getHeaders("Set-Cookie");
String headerstr=headers.toString();
if (headers == null)
return;
for(int i=0;i<headers.length;i++)
{
String cookie=headers[i].getValue();
String[]cookievalues=cookie.split(";");
for(int j=0;j<cookievalues.length;j++)
{
String[] keyPair=cookievalues[j].split("=");
String key=keyPair[0].trim();
String value=keyPair.length>1?keyPair[1].trim():"";
CookieContiner.put(key, value);
}
}
}
/**
* 增加Cookie
* @param request
*/
public void AddCookies(HttpPost request)
{
StringBuilder sb = new StringBuilder();
Iterator iter = CookieContiner.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
String val = entry.getValue().toString();
sb.append(key);
sb.append("=");
sb.append(val);
sb.append(";");
}
request.addHeader("cookie", sb.toString());
}
做了一个android网络应用，要求用自己实现的webview去访问web网站，并且在远程登录成功之后把cookie写入到手机，保留用作以后的自动登录。找了好多资料。发觉读取cookies倒还用的很普遍，可是通过程序写cookie却没有太多资料。
先来看一下如何读取cookie吧：
try
{
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("http://www.hlovey.com/");
HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
List<Cookie> cookies = httpclient.getCookieStore().getCookies();
if (entity != null) {
entity.consumeContent();
}
if (cookies.isEmpty()) {
Log.i(TAG, "NONE");
} else {
for (int i = 0; i < cookies.size(); i++) {
Log.i(TAG,"- domain " + cookies.get(i).getDomain());
Log.i(TAG,"- path " + cookies.get(i).getPath());
Log.i(TAG,"- value " + cookies.get(i).getValue());
Log.i(TAG,"- name " + cookies.get(i).getName());
Log.i(TAG,"- port " + cookies.get(i).getPorts());
Log.i(TAG,"- comment " + cookies.get(i).getComment());
Log.i(TAG,"- commenturl" + cookies.get(i).getCommentURL());
Log.i(TAG,"- all " + cookies.get(i).toString());
}
}
httpclient.getConnectionManager().shutdown();
}catch(Exception e){
//Todo
}finally{
//Todo
}
通过分析com.android.browser的源码，发现android默认的browser增加cookie是在数据库中增加记录，和window不同，win是采用一个txt文本文件的形式来存储cookie。而android是将cookie存储在数据库中。具体的介绍在《android cookie存储位置》一文中有介绍。我们都知道，android每个应用程序的存储空间都是独立的。不管使用preference还是database存储，都会在每个/data/data/package name/下面进行存储（preference存储在/data/data/package name/shared_prefs/xxxx.xml）。前面也说到cookie是存在数据库中，那么如果采用非浏览器访问网络需要保留cookie的话我们就应该在database中建立cookies表，并且存入相应的cookies数据。仿照默认broswer的代码：
/**声明一些数据库操作的常量*/
private static SQLiteDatabase mDatabase = null;
private static final String DATABASE_FILE = "webview.db";
private static final String COOKIES_NAME_COL = "name";
private static final String COOKIES_VALUE_COL = "value";
private static final String COOKIES_DOMAIN_COL = "domain";
private static final String COOKIES_PATH_COL = "path";
private static final String COOKIES_EXPIRES_COL = "expires";
private static final String COOKIES_SECURE_COL = "secure";
mDatabase = LoginApiActivity.this.openOrCreateDatabase(DATABASE_FILE, 0, null);
//创建cookie数据库
if (mDatabase != null) {
// cookies
mDatabase.execSQL("CREATE TABLE IF NOT EXISTS cookies "
+ " (_id INTEGER PRIMARY KEY, "
+ COOKIES_NAME_COL + " TEXT, " + COOKIES_VALUE_COL
+ " TEXT, " + COOKIES_DOMAIN_COL + " TEXT, "
+ COOKIES_PATH_COL + " TEXT, " + COOKIES_EXPIRES_COL
+ " INTEGER, " + COOKIES_SECURE_COL + " INTEGER" + ");");
mDatabase.execSQL("CREATE INDEX IF NOT EXISTS cookiesIndex ON "
+ "cookies" + " (path)");
}
}
/*写cookie*/
public void addCookie(Cookie cookie) {
if (cookie.getDomain() == null || cookie.getPath() == null || cookie.getName() == null
|| mDatabase == null) {
return;
}
String mCookieLock = "asd";
synchronized (mCookieLock) {
ContentValues cookieVal = new ContentValues();
cookieVal.put(COOKIES_DOMAIN_COL, cookie.getDomain());
cookieVal.put(COOKIES_PATH_COL, cookie.getPath());
cookieVal.put(COOKIES_NAME_COL, cookie.getName());
cookieVal.put(COOKIES_VALUE_COL, cookie.getValue());
mDatabase.insert("cookies", null, cookieVal);
}
}
//第一种
/**获取参数(ArrayList<NameValuePair> nameValuePairs,String url)后post给远程服务器
* 将获得的返回结果(String)返回给调用者
* 本函数适用于查询数量较少的时候
*/
public String posturl(ArrayList<NameValuePair> nameValuePairs,String url){
String result = "";
String tmp= "";
InputStream is = null;
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
return "Fail to establish http connection!";
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
tmp=sb.toString();
}catch(Exception e){
return "Fail to convert net stream!";
}
try{
JSONArray jArray = new JSONArray(tmp);
for(int i=0;i<jArray.length();i++){
JSONObject json_data = jArray.getJSONObject(i);
Iterator<?> keys=json_data.keys();
while(keys.hasNext()){
result += json_data.getString(keys.next().toString());
}
}
}catch(JSONException e){
return "The URL you post is wrong!";
}
return result;
}
//第二种
/**获取参数指定的网页代码，将其返回给调用者，由调用者对其解析
* 返回String
*/
public String posturl(String url){
InputStream is = null;
String result = "";
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
return "Fail to establish http connection!"+e.toString();
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}catch(Exception e){
return "Fail to convert net stream!";
}
return result;
}
//第三种
/**获取指定地址的网页数据
* 返回数据流
*/
public InputStream streampost(String remote_addr){
URL infoUrl = null;
InputStream inStream = null;
try {
infoUrl = new URL(remote_addr);
URLConnection connection = infoUrl.openConnection();
HttpURLConnection httpConnection = (HttpURLConnection)connection;
int responseCode = httpConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
inStream = httpConnection.getInputStream();
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return inStream;
2.Android中手机震动的设置（Vibrator）的步骤：
a、通过系统服务获得手机震动服务，Vibrator vibrator = (Vibrator)getSystemService(VIBRATOR_SERVICE);
b、得到震动服务后检测vibrator是否存在：
vibrator.hasVibrator();
检测当前硬件是否有vibrator，如果有返回true，如果没有返回false。
c、根据实际需要进行适当的调用，
vibrator.vibrate(long milliseconds);
开始启动vibrator持续milliseconds毫秒。
vibrator.vibrate(long[] pattern, int repeat);
以pattern方式重复repeat次启动vibrator。（pattern的形式为new long[]{arg1,arg2,arg3,arg4......},其中以两个一组的如arg1 和arg2为一组、arg3和arg4为一组，每一组的前一个代表等待多少毫 秒启动vibrator，后一个代表vibrator持续多少毫秒停止，之后往复即 可。Repeat表示重复次数，当其为-1时，表示不重复只以pattern的方 式运行一次）。
vibrator.cancel();
Vibrator停止。
http://www.apkbus.com/android-1807-1-1.html
3.Android如何使用读写cookie的方法
可以使用SharedPreferences或者SQLite来保存用户信息
private static HashMap<String,String> CookieContiner=new HashMap<String,String>() ;
/**
* 保存Cookie
* @param resp
*/
public void SaveCookies(HttpResponse httpResponse)
{
Header[] headers = httpResponse.getHeaders("Set-Cookie");
String headerstr=headers.toString();
if (headers == null)
return;
for(int i=0;i<headers.length;i++)
{
String cookie=headers[i].getValue();
String[]cookievalues=cookie.split(";");
for(int j=0;j<cookievalues.length;j++)
{
String[] keyPair=cookievalues[j].split("=");
String key=keyPair[0].trim();
String value=keyPair.length>1?keyPair[1].trim():"";
CookieContiner.put(key, value);
}
}
}
/**
* 增加Cookie
* @param request
*/
public void AddCookies(HttpPost request)
{
StringBuilder sb = new StringBuilder();
Iterator iter = CookieContiner.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
String val = entry.getValue().toString();
sb.append(key);
sb.append("=");
sb.append(val);
sb.append(";");
}
request.addHeader("cookie", sb.toString());
}
做了一个android网络应用，要求用自己实现的webview去访问web网站，并且在远程登录成功之后把cookie写入到手机，保留用作以后的自动登录。找了好多资料。发觉读取cookies倒还用的很普遍，可是通过程序写cookie却没有太多资料。
先来看一下如何读取cookie吧：
try
{
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("http://www.hlovey.com/");
HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
List<Cookie> cookies = httpclient.getCookieStore().getCookies();
if (entity != null) {
entity.consumeContent();
}
if (cookies.isEmpty()) {
Log.i(TAG, "NONE");
} else {
for (int i = 0; i < cookies.size(); i++) {
Log.i(TAG,"- domain " + cookies.get(i).getDomain());
Log.i(TAG,"- path " + cookies.get(i).getPath());
Log.i(TAG,"- value " + cookies.get(i).getValue());
Log.i(TAG,"- name " + cookies.get(i).getName());
Log.i(TAG,"- port " + cookies.get(i).getPorts());
Log.i(TAG,"- comment " + cookies.get(i).getComment());
Log.i(TAG,"- commenturl" + cookies.get(i).getCommentURL());
Log.i(TAG,"- all " + cookies.get(i).toString());
}
}
httpclient.getConnectionManager().shutdown();
}catch(Exception e){
//Todo
}finally{
//Todo
}
通过分析com.android.browser的源码，发现android默认的browser增加cookie是在数据库中增加记录，和window不同，win是采用一个txt文本文件的形式来存储cookie。而android是将cookie存储在数据库中。具体的介绍在《android cookie存储位置》一文中有介绍。我们都知道，android每个应用程序的存储空间都是独立的。不管使用preference还是database存储，都会在每个/data/data/package name/下面进行存储（preference存储在/data/data/package name/shared_prefs/xxxx.xml）。前面也说到cookie是存在数据库中，那么如果采用非浏览器访问网络需要保留cookie的话我们就应该在database中建立cookies表，并且存入相应的cookies数据。仿照默认broswer的代码：
/**声明一些数据库操作的常量*/
private static SQLiteDatabase mDatabase = null;
private static final String DATABASE_FILE = "webview.db";
private static final String COOKIES_NAME_COL = "name";
private static final String COOKIES_VALUE_COL = "value";
private static final String COOKIES_DOMAIN_COL = "domain";
private static final String COOKIES_PATH_COL = "path";
private static final String COOKIES_EXPIRES_COL = "expires";
private static final String COOKIES_SECURE_COL = "secure";
mDatabase = LoginApiActivity.this.openOrCreateDatabase(DATABASE_FILE, 0, null);
//创建cookie数据库
if (mDatabase != null) {
// cookies
mDatabase.execSQL("CREATE TABLE IF NOT EXISTS cookies "
+ " (_id INTEGER PRIMARY KEY, "
+ COOKIES_NAME_COL + " TEXT, " + COOKIES_VALUE_COL
+ " TEXT, " + COOKIES_DOMAIN_COL + " TEXT, "
+ COOKIES_PATH_COL + " TEXT, " + COOKIES_EXPIRES_COL
+ " INTEGER, " + COOKIES_SECURE_COL + " INTEGER" + ");");
mDatabase.execSQL("CREATE INDEX IF NOT EXISTS cookiesIndex ON "
+ "cookies" + " (path)");
}
}
/*写cookie*/
public void addCookie(Cookie cookie) {
if (cookie.getDomain() == null || cookie.getPath() == null || cookie.getName() == null
|| mDatabase == null) {
return;
}
String mCookieLock = "asd";
synchronized (mCookieLock) {
ContentValues cookieVal = new ContentValues();
cookieVal.put(COOKIES_DOMAIN_COL, cookie.getDomain());
cookieVal.put(COOKIES_PATH_COL, cookie.getPath());
cookieVal.put(COOKIES_NAME_COL, cookie.getName());
cookieVal.put(COOKIES_VALUE_COL, cookie.getValue());
mDatabase.insert("cookies", null, cookieVal);
}
}
1.android获取网页数据的方法：
//第一种
/**获取参数(ArrayList<NameValuePair> nameValuePairs,String url)后post给远程服务器
* 将获得的返回结果(String)返回给调用者
* 本函数适用于查询数量较少的时候
*/
public String posturl(ArrayList<NameValuePair> nameValuePairs,String url){
String result = "";
String tmp= "";
InputStream is = null;
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
return "Fail to establish http connection!";
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
tmp=sb.toString();
}catch(Exception e){
return "Fail to convert net stream!";
}
try{
JSONArray jArray = new JSONArray(tmp);
for(int i=0;i<jArray.length();i++){
JSONObject json_data = jArray.getJSONObject(i);
Iterator<?> keys=json_data.keys();
while(keys.hasNext()){
result += json_data.getString(keys.next().toString());
}
}
}catch(JSONException e){
return "The URL you post is wrong!";
}
return result;
}
//第二种
/**获取参数指定的网页代码，将其返回给调用者，由调用者对其解析
* 返回String
*/
public String posturl(String url){
InputStream is = null;
String result = "";
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
return "Fail to establish http connection!"+e.toString();
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}catch(Exception e){
return "Fail to convert net stream!";
}
return result;
}
//第三种
/**获取指定地址的网页数据
* 返回数据流
*/
public InputStream streampost(String remote_addr){
URL infoUrl = null;
InputStream inStream = null;
try {
infoUrl = new URL(remote_addr);
URLConnection connection = infoUrl.openConnection();
HttpURLConnection httpConnection = (HttpURLConnection)connection;
int responseCode = httpConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
inStream = httpConnection.getInputStream();
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return inStream;
2.Android中手机震动的设置（Vibrator）的步骤：
a、通过系统服务获得手机震动服务，Vibrator vibrator = (Vibrator)getSystemService(VIBRATOR_SERVICE);
b、得到震动服务后检测vibrator是否存在：
vibrator.hasVibrator();
检测当前硬件是否有vibrator，如果有返回true，如果没有返回false。
c、根据实际需要进行适当的调用，
vibrator.vibrate(long milliseconds);
开始启动vibrator持续milliseconds毫秒。
vibrator.vibrate(long[] pattern, int repeat);
以pattern方式重复repeat次启动vibrator。（pattern的形式为new long[]{arg1,arg2,arg3,arg4......},其中以两个一组的如arg1 和arg2为一组、arg3和arg4为一组，每一组的前一个代表等待多少毫 秒启动vibrator，后一个代表vibrator持续多少毫秒停止，之后往复即 可。Repeat表示重复次数，当其为-1时，表示不重复只以pattern的方 式运行一次）。
vibrator.cancel();
Vibrator停止。
http://www.apkbus.com/android-1807-1-1.html
3.Android如何使用读写cookie的方法
可以使用SharedPreferences或者SQLite来保存用户信息
private static HashMap<String,String> CookieContiner=new HashMap<String,String>() ;
/**
* 保存Cookie
* @param resp
*/
public void SaveCookies(HttpResponse httpResponse)
{
Header[] headers = httpResponse.getHeaders("Set-Cookie");
String headerstr=headers.toString();
if (headers == null)
return;
for(int i=0;i<headers.length;i++)
{
String cookie=headers[i].getValue();
String[]cookievalues=cookie.split(";");
for(int j=0;j<cookievalues.length;j++)
{
String[] keyPair=cookievalues[j].split("=");
String key=keyPair[0].trim();
String value=keyPair.length>1?keyPair[1].trim():"";
CookieContiner.put(key, value);
}
}
}
/**
* 增加Cookie
* @param request
*/
public void AddCookies(HttpPost request)
{
StringBuilder sb = new StringBuilder();
Iterator iter = CookieContiner.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
String val = entry.getValue().toString();
sb.append(key);
sb.append("=");
sb.append(val);
sb.append(";");
}
request.addHeader("cookie", sb.toString());
}
做了一个android网络应用，要求用自己实现的webview去访问web网站，并且在远程登录成功之后把cookie写入到手机，保留用作以后的自动登录。找了好多资料。发觉读取cookies倒还用的很普遍，可是通过程序写cookie却没有太多资料。
先来看一下如何读取cookie吧：
try
{
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("http://www.hlovey.com/");
HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
List<Cookie> cookies = httpclient.getCookieStore().getCookies();
if (entity != null) {
entity.consumeContent();
}
if (cookies.isEmpty()) {
Log.i(TAG, "NONE");
} else {
for (int i = 0; i < cookies.size(); i++) {
Log.i(TAG,"- domain " + cookies.get(i).getDomain());
Log.i(TAG,"- path " + cookies.get(i).getPath());
Log.i(TAG,"- value " + cookies.get(i).getValue());
Log.i(TAG,"- name " + cookies.get(i).getName());
Log.i(TAG,"- port " + cookies.get(i).getPorts());
Log.i(TAG,"- comment " + cookies.get(i).getComment());
Log.i(TAG,"- commenturl" + cookies.get(i).getCommentURL());
Log.i(TAG,"- all " + cookies.get(i).toString());
}
}
httpclient.getConnectionManager().shutdown();
}catch(Exception e){
//Todo
}finally{
//Todo
}
通过分析com.android.browser的源码，发现android默认的browser增加cookie是在数据库中增加记录，和window不同，win是采用一个txt文本文件的形式来存储cookie。而android是将cookie存储在数据库中。具体的介绍在《android cookie存储位置》一文中有介绍。我们都知道，android每个应用程序的存储空间都是独立的。不管使用preference还是database存储，都会在每个/data/data/package name/下面进行存储（preference存储在/data/data/package name/shared_prefs/xxxx.xml）。前面也说到cookie是存在数据库中，那么如果采用非浏览器访问网络需要保留cookie的话我们就应该在database中建立cookies表，并且存入相应的cookies数据。仿照默认broswer的代码：
/**声明一些数据库操作的常量*/
private static SQLiteDatabase mDatabase = null;
private static final String DATABASE_FILE = "webview.db";
private static final String COOKIES_NAME_COL = "name";
private static final String COOKIES_VALUE_COL = "value";
private static final String COOKIES_DOMAIN_COL = "domain";
private static final String COOKIES_PATH_COL = "path";
private static final String COOKIES_EXPIRES_COL = "expires";
private static final String COOKIES_SECURE_COL = "secure";
mDatabase = LoginApiActivity.this.openOrCreateDatabase(DATABASE_FILE, 0, null);
//创建cookie数据库
if (mDatabase != null) {
// cookies
mDatabase.execSQL("CREATE TABLE IF NOT EXISTS cookies "
+ " (_id INTEGER PRIMARY KEY, "
+ COOKIES_NAME_COL + " TEXT, " + COOKIES_VALUE_COL
+ " TEXT, " + COOKIES_DOMAIN_COL + " TEXT, "
+ COOKIES_PATH_COL + " TEXT, " + COOKIES_EXPIRES_COL
+ " INTEGER, " + COOKIES_SECURE_COL + " INTEGER" + ");");
mDatabase.execSQL("CREATE INDEX IF NOT EXISTS cookiesIndex ON "
+ "cookies" + " (path)");
}
}
/*写cookie*/
public void addCookie(Cookie cookie) {
if (cookie.getDomain() == null || cookie.getPath() == null || cookie.getName() == null
|| mDatabase == null) {
return;
}
String mCookieLock = "asd";
synchronized (mCookieLock) {
ContentValues cookieVal = new ContentValues();
cookieVal.put(COOKIES_DOMAIN_COL, cookie.getDomain());
cookieVal.put(COOKIES_PATH_COL, cookie.getPath());
cookieVal.put(COOKIES_NAME_COL, cookie.getName());
cookieVal.put(COOKIES_VALUE_COL, cookie.getValue());
mDatabase.insert("cookies", null, cookieVal);
}
}
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