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Android intent and activity经典程序
来源:互联网   发布日期:2016-01-14 09:45:05   浏览:1054次  

导读:#massage_box { position: absolute; left: expression((body.clientwidth-350)/ 2 ); top: expression((body.clientheight-200)/ 2 ); width: 350px; height: 200px; z-index: 2; visibility: hidden } #mask { position: absolute; top: 0; left: 0; width...

#massage_box {

position: absolute;

left: expression((body.clientwidth-350)/ 2 );

top: expression((body.clientheight-200)/ 2 );

width: 350px;

height: 200px;

z-index: 2;

visibility: hidden

}

#mask {

position: absolute;

top: 0;

left: 0;

width: expression(body.scrollwidth);

height: expression(body.scrollheight);

background: #d3ddea;

filter: alpha(opacity =50);

z-index: 1;

visibility: hidden

}

Java代码

//数据写入intentintent openwelcomeactivityintent=new intent();bundle mybundelforname=new bundle();mybundelforname.putstring("key_name",inname.gettext().tostring());mybundelforname.putstring("key_age",inage.gettext().tostring());openwelcomeactivityintent.putextras(mybundelforname);openwelcomeactivityintent.setclass(androidbundel.this, welcome.class);startactivity(openwelcomeactivityintent);//从intent 中获取数据bundle mybundelforgetname=this.getintent().getextras();string name=mybundelforgetname.getstring("key_name");

Java代码

package zyf.android.study;import ……import android.content.intent;import android.net.uri;import android.view.view.onclicklistener;public class androidstudy_two extends activity {@overridepublic void oncreate(bundle savedinstancestate) {super.oncreate(savedinstancestate);setcontentview(r.layout.main);final edittext inname = (edittext) findviewbyid(r.id.name);final textview result = (textview) findviewbyid(r.id.result);button button_start_browser = (button) findviewbyid(r.id.submit_tonet);button button_login=(button) findviewbyid(r.id.show_login);button button_showloginname=(button)findviewbyid(r.id.submit_toshowloingname);button_start_browser.setonclicklistener(new onclicklistener(){@overridepublic void onclick(view v) {uri myuri = uri.parse("http://www.flashwing.net");intent openbrowserintent = new intent(intent.action_view,myuri);startactivity(openbrowserintent);}});button_login.setonclicklistener(new onclicklistener(){@overridepublic void onclick(view v) {intent openwelcomeactivityintent=new intent();openwelcomeactivityintent.setclass(androidstudy_two.this,welcome.class);startactivity(openwelcomeactivityintent);}});button_showloginname.setonclicklistener(new onclicklistener(){@overridepublic void onclick(view v) {result.settext(inname.gettext()+"欢迎您进入");}});}}

Java代码

使用bundle在activity间传递数据2从源请求activity 中通过一个intent 把一个服务请求传到目标activity 中//数据写入intentintent openwelcomeactivityintent=new intent();bundle mybundelforname=new bundle();mybundelforname.putstring("key_name",inname.gettext().tostring());mybundelforname.putstring("key_age",inage.gettext().tostring());openwelcomeactivityintent.putextras(mybundelforname);openwelcomeactivityintent.setclass(androidbundel.this, welcome.class);startactivity(openwelcomeactivityintent);//从intent 中获取数据bundle mybundelforgetname=this.getintent().getextras();string name=mybundelforgetname.getstring("key_name");mytextview_showname.settext("欢迎您进入:"+name);private intent tonextintent;//intent 成员声明tonextintent=new intent();//intent 定义tonextintent.setclass(twoactivityme3.this, secondactivity3.class);//设定开启的下一个activitystartactivityforresult(tonextintent, request_ask);//开启intent 时候,把请求码同时传递-----------------------------------android 编程基础3在源请求activity 中等待intent 返回应答结果,通过重载onactivityresult()方法…第一个参数是你开启请求intent时的对应请求码,可以自己定义。…第二个参数是目标activity返回的验证结果码…第三个参数是目标activity返回的intent目标activity 中发送请求结果代码,连同源activity 请求的数据一同绑定到bundle中通过intent 传回源请求activity 中log与ddms(查看log等信息)@overrideprotected void onactivityresult(int requestcode,int resultcode, intent data) {// todo auto-generated method stubsuper.onactivityresult(requestcode, resultcode, data);if(requestcode==request_ask){if(resultcode==result_canceled){settitle("cancel****");}else if(resultcode==result_ok){showbundle=data.getextras();//从返回的intent中获得bundlename=showbundle.getstring("myname");//从bundle中获得相应数据text.settext("the name get from the second layout:\n"+name);}}}backintent=new intent();stringbundle=new bundle();stringbundle.putstring("myname", name);backintent.putextras(stringbundle);setresult(result_ok, backintent);//返回activity结果码finish();

Java代码

1、打开cmd输入netca。 2、选择【本地net服务名配置】→下一步。 3、选择【添加】→下一步。 4、在【服务名】中输入你想要连接的服务器上的oracle服务的名字→下一步。 5、选择【tcp】→下一步。 6、在【主机名】中输入你想要连接的服务器ip,端口号不变→下一步。 7、选择【进行测试】→下一步。(当然你也可以选择不测试) ※1测试如果不通过,点击【更改登录】输入一个肯定能登入的【用户名】和【口令】→确定,出现【正在连接...测试成功。】表明测试成功。 ※2测试不通过的话,点【上一步】确认你写的【服务名】和【主机名】,确认无误的情况下,确认你要连接的服务器oracle监听服务已经打开。 8、在【net服务名中】输入你想要使用的本地的服务名→下一步。 ※就是【sqlplus user/passwd @本地服务名】。 9、选择【否】→下一步。 10、出现【net服务配置完毕】字样→下一步。 11、点击【完成】完成服务配置。 12、在上面服务配置完成以后,在cmd中输入如下命令即可远程登录oracle服务器: sqlplus user_name/password@本地服务名 一定记住,上面的本地服务名是你第8步写的服务名。

Java代码

3. jboss 的安全设置3.1 jmx-console 登录的用户名和密码设置 默认情况访问 http://localhost:8080/jmx-console 就可以浏览jboss的部署管理的一些信息,不需要输入用户名和密码,使用起来有点安全隐患。下面我们针对此问题对jboss进行配置,使得访问jmx-console也必须要知道用户名和密码才可进去访问。步骤如下:3.1.1 修改jboss-web.xml文件打开/server/default/deploy/jmx-console.war/web-inf/jboss-web.xml文件,去掉<security-domain>java:/jaas/jmx-console</security-domain>的注释。修改后的该文件内容为:<jboss-web><!-- uncomment the security-domain to enable security. you willneed to edit the htmladaptor login configuration to setup thelogin modules used to authentication users.--><security-domain>java:/jaas/jmx-console</security-domain></jboss-web>3.1.2 修改web.xml文件与3.1.1中的jboss-web.xml同级目录下的web.xml文件,查找到<security-constraint/>节点,去掉它的注释,修改后该部分内容为:<!-- a security constraint that restricts access to the html jmx consoleto users with the role jbossadmin. edit the roles to what you want anduncomment the web-inf/jboss-web.xml/security-domain element to enablesecured access to the html jmx console.--><security-constraint><web-resource-collection><web-resource-name>htmladaptor</web-resource-name><description>an example security config that only allows users with therole jbossadmin to access the html jmx console web application</description><url-pattern>/*</url-pattern><http-method>get</http-method><http-method>post</http-method></web-resource-collection><auth-constraint><role-name>jbossadmin</role-name></auth-constraint></security-constraint>在此处可以看出,为登录配置了角色jbossadmin。3.1.3 修改login-config.xml文件在第一步中的jmx-console安全域和第二步中的运行角色jbossadmin都是在login-config.xml中配置,我们在jboss安装目录/server/default/config下找到它。查找名字为:jmx-console的application-policy:<application-policy name = "jmx-console"><authentication><login-module code="org.jboss.security.auth.spi.usersrolesloginmodule"flag = "required"><module-option name="usersproperties">props/jmx-console-users.properties</module-option><module-option name="rolesproperties">props/jmx-console-roles.properties</module-option></login-module></authentication></application-policy>在此处可以看出,登录的角色、用户等的信息分别在props目录下的jmx-console-roles.properties和jmx-console-users.properties文件中设置,分别打开这两个文件。其中jmx-console-users.properties文件的内容如下:# a sample users.properties file for use with the usersrolesloginmoduleadmin=admin该文件定义的格式为:用户名=密码,在该文件中,默认定义了一个用户名为admin,密码也为admin的用户,读者可将其改成所需的用户名和密码。jmx-console-roles.properties的内容如下:# a sample roles.properties file for use with the usersrolesloginmoduleadmin=jbossadmin, httpinvoker该文件定义的格式为:用户名=角色,多个角色以“,”隔开,该文件默认为admin用户定义了jbossadmin和httpinvoker这两个角色。配置完成后读者可以通过访问: http://localhost:8088/jmx-console/ ,输入jmx-console-roles.properties文件中定义的用户名和密码,访问jmx-console的页面。如图:

Java代码

package action;import java.awt.image;import java.awt.toolkit;import java.awt.image.bufferedimage;import java.awt.image.cropimagefilter;import java.awt.image.filteredimagesource;import java.awt.image.imagefilter;import java.awt.image.imageproducer;import java.io.bufferedinputstream;import java.io.bufferedoutputstream;import java.io.file;import java.io.fileinputstream;import java.io.fileoutputstream;import java.io.ioexception;import java.io.inputstream;import java.io.outputstream;import java.util.arraylist;import java.util.date;import java.util.list;import java.util.map;import java.util.random;import javax.imageio.imageio;import javax.servlet.http.httpservletrequest;import org.apache.struts2.servletactioncontext;import po.blog;import po.login;import po.photo;import po.userinfo;import service.qqrservice;import util.imagehepler;import com.opensymphony.xwork2.actioncontext;import com.sun.image.codec.jpeg.jpegcodec;import com.sun.image.codec.jpeg.jpegimageencoder;public class kindeditoraction extends baseaction {private static final long serialversionuid = 1l;private qqrservice qqrservice;// 封装参数 private file imgfile;private string imgfilefilename; private string imgfilecontenttype;private string filedir = "/blogimg";private string imgtitle = "\";private string align;private int imgwidth = 0;private int imgheight = 0;// 上传kindeditor 图片及压缩@suppresswarnings("deprecation")public string uploadimg() throws exception {// todo auto-generated method stub// 只能传图片try {if (this.imgfile != null) {file dir = new file(servletactioncontext.getrequest().getrealpath(filedir));if (!dir.exists())dir.mkdir();integer login_id = (integer) actioncontext.getcontext().getsession().get("login_id");date dt = new date();file dst = new file(dir.getabsolutepath() + file.separator+ login_id + new date().gettime() + ".jpg");this.resize_image(this.imgfile, dst);string id = "context";string url = servletactioncontext.getrequest().getcontextpath()+ "/" + this.filedir + "/" + dst.getname();string border = "0";string result = "<script type='text/javascript'>";result += "parent.ke.plugin['image'].insert('" + id + "','"+ url + "','" + imgtitle + "','" + imgheight + "','"+ imgheight + "','" + border + "','" + align + "');";result += "</script>";servletactioncontext.getresponse().getwriter().write(result);} else {return null;}} catch (runtimeexception e) {// todo auto-generated catch blocke.printstacktrace();}return null;}// 自己封装的一个把源文件对象复制成目标文件对象public boolean copy(file src, file dst) {inputstream in = null;outputstream out = null;try {in = new bufferedinputstream(new fileinputstream(src), 1024);out = new bufferedoutputstream(new fileoutputstream(dst), 1024);byte[] buffer = new byte[1024];int len = 0;while ((len = in.read(buffer)) > 0) {out.write(buffer, 0, len);}return true;} catch (exception e) {e.printstacktrace();return false;} finally {if (null != in) {try {in.close();} catch (ioexception e) {e.printstacktrace();}}if (null != out) {try {out.close();} catch (ioexception e) {e.printstacktrace();}}}}/*** 图像压缩** @param fi大图文件* @param fo将要转换出的小图文件*/ public boolean resize_image(file fi, file fo) {try {// file fi = new file("e:/3.jpg"); // 大图文件// file fo = new file("e:/333.jpg"); // 将要转换出的小图文件// affinetransform transform = new affinetransform();bufferedimage bis = imageio.read(fi);int w = bis.getwidth();// system.out.println(w);int h = bis.getheight();// system.out.println(h);// double scale = (double) w / h;int nw = w;int nh = h;bufferedimage tag = new bufferedimage(nw, nh,bufferedimage.type_int_rgb);this.imgwidth = tag.getwidth();this.imgheight = tag.getheight();if (this.imgwidth > 250)this.imgwidth = 250;if (this.imgheight >= 250)this.imgheight = 250;tag.getgraphics().drawimage(bis, 0, 0, nw, nh, null); // 绘制缩小后的图// 转换为32*32 jpg格式fileoutputstream newimage = new fileoutputstream(fo); // 输出到文件流jpegimageencoder encoder = jpegcodec.createjpegencoder(newimage);encoder.encode(tag);newimage.close();return true;} catch (exception e) {e.printstacktrace();return false;}}public void imageshow(int width, int height, int w, int h) {int i = width;int j = height;width = w;height = h;if (i > w) {float width_bili = w / i;float height_bili = h / j;float bili = width_bili;if (width_bili < height_bili) {bili = width_bili;} else {bili = height_bili;}i = (int) (i * bili);j = (int) (j * bili);} else {if (j > h) {float bili = (float) (h / j);i = (int) (i * bili);j = (int) (j * bili);}}width = i;height = j; }/*** 图像的缩略*** width 输出图片大小 height** @param fi大图文件* @param fo将要转换出的小图文件*/ public boolean resize_image(file fi, file fo, int width, int height) {try {bufferedimage bis = imageio.read(fi);int w = bis.getwidth();int h = bis.getheight();int nw = width;int nh = height;bufferedimage tag = new bufferedimage(nw, nh,bufferedimage.type_int_rgb);tag.getgraphics().drawimage(bis, 0, 0, nw, nh, null); // 绘制缩小后的图// 转换为32*32 jpg格式fileoutputstream newimage = new fileoutputstream(fo); // 输出到文件流jpegimageencoder encoder = jpegcodec.createjpegencoder(newimage);encoder.encode(tag);newimage.close();return true;} catch (exception e) {e.printstacktrace();return false;}}/*** 图像的等比缩略*** width 输出图片大小 height** @param fi大图文件* @param fo将要转换出的小图文件*/ public boolean geometric_image(file fi, file fo, int width, int height) {try {bufferedimage bis = imageio.read(fi);int w = bis.getwidth();int h = bis.getheight();int nw = w;int nh = h;if (w > width) {nw = width;nh = nw * h / w;if (nh > height) {nh = height;nw = nh * w / h;}} else if (h > height) {nh = height;nw = nh * w / h;if (nw > width) {nw = width;nh = nw * h / w;}}bufferedimage tag = new bufferedimage(nw, nh,bufferedimage.type_int_rgb);tag.getgraphics().drawimage(bis, 0, 0, nw, nh, null); // 绘制缩小后的图// 转换为32*32 jpg格式fileoutputstream newimage = new fileoutputstream(fo); // 输出到文件流jpegimageencoder encoder = jpegcodec.createjpegencoder(newimage);encoder.encode(tag);newimage.close();return true;} catch (exception e) {e.printstacktrace();return false;}}public string getimgtitle() {return imgtitle;}public void setimgtitle(string imgtitle) {this.imgtitle = imgtitle;}public string getalign() {return align;}public void setalign(string align) {this.align = align; }public qqrservice getqqrservice() {return qqrservice;}public void setqqrservice(qqrservice qqrservice) {this.qqrservice = qqrservice;}public file getimgfile() {return imgfile; }public void setimgfile(file imgfile) {this.imgfile = imgfile; }public string getimgfilefilename() {return imgfilefilename; }public void setimgfilefilename(string imgfilefilename) {this.imgfilefilename = imgfilefilename; }public string getimgfilecontenttype() {return imgfilecontenttype;}public void setimgfilecontenttype(string imgfilecontenttype) {this.imgfilecontenttype = imgfilecontenttype;}public string getfiledir() {return filedir; }public void setfiledir(string filedir) {this.filedir = filedir; }}

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