/**
* 把一个View的对象转换成bitmap
*/
private Bitmap getViewBitmap(MapView v) {
v.clearFocus();
v.setpressed(false);
//能画缓存就返回false
boolean willNotCache = v.willNotCacheDrawing();
v.setwillNotCacheDrawing(false);
int color = v.getDrawingCacheBackgroundColor();
v.setDrawingCacheBackgroundColor(0);
if (color != 0) {
v.destroyDrawingCache();
}
v.buildDrawingCache();
Bitmap cacheBitmap = null;
while(cacheBitmap == null){
cacheBitmap = v.getDrawingMapCache(0,v.getWidth(),v.getHeight());
}
Bitmap bitmap = Bitmap.createBitmap(cacheBitmap);
// Restore the view
v.destroyDrawingCache();
v.setwillNotCacheDrawing(willNotCache);
v.setDrawingCacheBackgroundColor(color);
return bitmap;
}
public void saveMyBitmap(String bitName,Bitmap mBitmap){
String FileName=this.getInnerSDCardpath() + "/" + bitName + ".png";
ShowMessage(FileName);
File f = new File(FileName);
try {
f.createNewFile();
} catch (IOException e) {
// Todo Auto-generated catch block
Log.e("在保存"+FileName+"图片时出错：" + e.toString(),"在保存"+FileName+"图片时出错：" + e.toString());
}
FileOutputStream fOut = null;
try {
fOut = new FileOutputStream(f);
} catch (FileNotFoundException e) {
e.printstacktrace();
}
mBitmap.compress(Bitmap.CompressFormat.PNG,100,fOut);
try {
fOut.flush();
} catch (IOException e) {
e.printstacktrace();
}
try {
fOut.close();
} catch (IOException e) {
e.printstacktrace();
}
}
//缩小
private class ButtonNexitClickListener implements View.OnClickListener {
public void onClick(View v) {
//ShowMessage("ok1");
Bitmap bitmap=getViewBitmap(mapView);
//ShowMessage("ok2");
saveMyBitmap("yl",bitmap);
//ShowMessage("ok3");
bitmap.recycle();
ShowMessage("保存成功");
}
}

以前一直都用HttpURLConnection 或 HttpClient 向服务器发布和接收数据。

这次因为项目需求使用 webService 来与服务端交互。

这里主要介绍webService来传递负责对象，传递简单数据可参考其它文章。

需要下载一个 ksoap2-android-assembly-3.0.0-jar-with-dependencies.jar 的包.

   final static String SERVICE_NS = "http://service.web.rt.org/";
   final static String SERVICE_URL = "http://192.168.2.116:8080/webservice/UserService";
       //调用的方法
       String methodName = "save";此方法为你要调用服务器端的方法名称
       //创建httpTransportSE传输对象
       HttpTransportSE ht = new HttpTransportSE(SERVICE_URL);
       ht.debug = true;
       //使用soap1.1协议创建Envelop对象
       SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
       //实例化SoapObject对象
       SoapObject request = new SoapObject(SERVICE_NS,methodName);
这里我们要传递一个User对象给服务器端      封装此User对象
     
       User user1 = new User();
       user1.setPassword("123");
       user1.setUserID("A662");
       user1.setUsername("charles");
   这里的setName 一定要与服务器接收端的参数名一致，否则服务器端无法获得    
       PropertyInfo property = new PropertyInfo();
       property.setName("arg0");
       property.setValue(user1);
       property.setType(User.class);
       request.addProperty(property);

      envelope.addMapping(SERVICE_NS,"User",user1.getClass());

       envelope.bodyOut = ht;
            envelope.setoutputSoapObject(request);

       //将SoapObject对象设置为SoapSerializationEnvelope对象的传出SOAP消息
       try{
           //调用webService

           ht.call(null,envelope);
    
           if(envelope.getResponse() != null){
  
               SoapObject result = (SoapObject) envelope.bodyIn;
              System.out.println("result>>>>>>"+result);       
                      
              User user = new User();
              
               SoapObject soapChildsChilds = (SoapObject)result.getProperty(0); 
               user =  (User) JsonToBean.json2Bean(soapChildsChilds,User.class);//本人利用反射改写JsonToBean来获取user对象
           
               System.out.println(user);

       }catch (Exception e) {
           e.printstacktrace();
       }     

下面是自己定义的User对象

public class User implements KvmSerializable {

private Stringpassword;
private StringuserID;
private Stringusername;

public String getpassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getUserID() {
return userID;
}
public void setUserID(String userID) {
this.userID = userID;
}

@Override
public String toString() {
// Todo Auto-generated method stub
return "username :"+username+"password :"+password+"userID "+userID;
}
public Object getProperty(int arg0) {

switch (arg0) {
 case 0:
  return password;
 case 1:
 return userID;
 case 2:
 return username;

}
return null;
}
public int getPropertyCount() {
// Todo Auto-generated method stub
return 3;
}
public void getPropertyInfo(int arg0,Hashtable arg1,PropertyInfo arg2) {
switch (arg0) {
case 0: 
arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "password";//此处为解析xml标签时使用 注意引号一定不要少
break;
case 1:

arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "userID";
break;
case 2:

arg2.type = PropertyInfo.STRING_CLASS;
arg2.name = "username";
break;

}
}
public void setProperty(int arg0,Object arg1) {
switch (arg0) {
case 0: 
password = arg1.toString();
break;
case 1:

userID = arg1.toString();;
break;
case 2:

username = arg1.toString();;
break;

}
}
} 

个人感觉每次都需要实现KvmSerializable接口比较麻烦，目前还没找到比较好的方法来解决这个问题。

写了这么多篇Android React Native的博文，基本上把复杂的东西都搞定了，接下来来看看一些轻松的东西，和布局有关，就是css样式，那么一个View可以设置哪些css样式呢，是和web中的css样式完全一样呢，还是有所不同呢？其实你只要在样式表中书写一个不存在的样式，就会报一大堆错，提示你该样式不存在，然后提供所有可用的样式给你，如图

下面的样式就是样式表中所有可用的属性。

<View style={[styles.base, styles.background]} />

var AwesomeProject = React.createClass({
  render: function() {
    return (
    <View style={styles.container}>
        <View style={styles.Box1}/>
        <View style={styles.Box2}/>
        <View style={styles.Box3}/>
        <View style={styles.Box4}/>
   </View>
    );
  },});

var styles = StyleSheet.create({
  container:{
    flex:1,backgroundColor:'#ff0'//黄色
  },Box1:{
    width:50,height:50,backgroundColor:'#f00',//红色
    position :'absolute',left:30,//左边距离屏幕左侧30单位
  },Box2:{
    width:50,backgroundColor:'#0f0',//绿色
    position :'absolute',top:30,//上边距离屏幕上侧30单位
  },Box3:{
    width:50,backgroundColor:'#f0f',//紫色
    position :'absolute',right:30,//右边距离屏幕右侧30单位
  },Box4:{
    width:50,backgroundColor:'#00f',//蓝色
    position :'absolute',bottom:30//下边距离屏幕下侧30单位
  }
});

var AwesomeProject = React.createClass({

  render: function() {
    return (
    <View style={styles.container}>
        <View style={styles.Box1}/>
   </View>
    );
  },//红色
    position :'relative',});

var styles = StyleSheet.create({
  container:{
    flex:1,bottom:30,});

backgroundColor

width 
height

 var AwesomeProject = React.createClass({ render: function() { return ( <View style={styles.container}> <Image source={{uri:'https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png'}} style={styles.img}></Image> </View> ); },}); var styles = StyleSheet.create({ container:{ backgroundColor:'#ff0'//黄色 },img:{ flex:1,height:150,resizeMode:"contain" },});