1.facebook 是一个强大的图片加载组件。 相比于ImageLoader 它的流畅性更换，因为
它直接是一个自定义的控件。
详细用法： http://www.fresco-cn.org/
直接上代码
2. jar包导入 ，仅限于androidStudio ，eclipse需自行复制工程，比较麻烦，建议开发转studio
compile 'com.android.support:appcompat-v7:23.1.1'
compile project(':mylibrary')
compile 'com.zhy:okhttputils:2.3.8'
compile 'com.facebook.fresco:fresco:0.8.1'
compile 'com.jakewharton:butterknife:7.0.1'
compile 'com.google.code.gson:gson:2.3.1'
3.在Application
public class BaseApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
//初始化Fresco
Fresco.initialize(getApplicationContext());
//初始化化OkhttpUtis
OkHttpUtils.getInstance().debug("OkHttpUtils").setConnectTimeout(100000, TimeUnit.MILLISECONDS);
OkHttpUtils.getInstance().setCertificates();
}
}
4. xml
<com.facebook.drawee.view.SimpleDraweeView
android:layout_gravity="center_horizontal"
android:id="@+id/user_avator"
android:layout_width="150dp"
android:layout_height="150dp"
fresco:roundAsCircle="true"
fresco:actualImageScaleType="focusCrop"
fresco:roundedCornerRadius="10dp"
android:layout_centerVertical="true"
/>
5.一行代码
Uri uri = Uri.parse("http://pica.nipic.com/2008-03-19/2008319183523380_2.jpg");
userAvator.setImageURI(uri);
zhy 地址https://github.com/hongyangAndroid/okhttp-utils
1.需要在Application中初始化
OkHttpUtils.getInstance().debug("OkHttpUtils").setConnectTimeout(100000, TimeUnit.MILLISECONDS);
OkHttpUtils.getInstance().setCertificates();
2.提交数据
String url = URL.PATH + URL.map.get("login");
OkHttpUtils.post()
.url(url)
.params(params)
.build()
.execute(new StringCallback() {
@Override
public void onError(Call call, Exception e) {
LG.e(TAG,e.getMessage());
}
@Override
public void onResponse(String s) {
try {
JSONObject responseobj = new JSONObject(s);
boolean isSucess = responseobj.getBoolean("success");
if (isSucess) {
JSONObject jsonBody=responseobj.getJSONObject("body");
JSONObject jsonUser=jsonBody.getJSONObject("User");
int id=jsonUser.getInt("id");
String mobile=jsonUser.getString("mobile");
String password=jsonUser.getString("password");
String userName=jsonUser.getString("userName");
SharedPreferences.Editor ed = sp.edit();
ed.putString(Constants.SP_MOBILE, mobile);
ed.putString(Constants.SP_PASSWORD, password);
ed.putInt(Constants.SP_ID, id);
ed.putString(Constants.SP_USERNAME, userName);
ed.commit();
Intent intent=new Intent(LoginActivity.this,MainActivity.class);
startActivity(intent);
Toast.makeText(getApplicationContext(), "登录成功", Toast.LENGTH_SHORT).show();
} else {
String msg=responseobj.getString("msg");
T.show(mContext, msg);
}
} catch (Exception e) {
Toast.makeText(LoginActivity.this, "登录失败",Toast.LENGTH_SHORT).show();
Log.i("--loginFaild--", e.getMessage());
}
}
});
3.提交其他数据见zhy的github 写得非常清楚！
#buterKnif Jake的作品 地址 https://github.com/JakeWharton/butterknife
用法见其gitHub
主要讲一下自动生成注解代码的插件
apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt' //插件名字
需要在gradle
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
classpath 'com.neenbedankt.gradle.plugins:android-apt:1.6'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
具体见
https://segmentfault.com/q/1010000003740558
#Gson
Gson 是 Google 提供的用来在 Java 对象和 JSON 数据之间进行映射的 Java 类库。可以将一个 JSON 字符串转成一个 Java 对象，或者反过来。
jar和源码下载地址: http://code.google.com/p/google-gson/downloads/list
public class Student {
private int id;
private String name;
private Date birthDay;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthDay() {
return birthDay;
}
public void setBirthDay(Date birthDay) {
this.birthDay = birthDay;
}
@Override
public String toString() {
return "Student [birthDay=" + birthDay + ", id=" + id + ", name="
+ name + "]";
}
}
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
public class GsonTest1 {
public static void main(String[] args) {
Gson gson = new Gson();
Student student1 = new Student();
student1.setId(1);
student1.setName("李坤");
student1.setBirthDay(new Date());
// //////////////////////////////////////////////////////////
System.out.println("----------简单对象之间的转化-------------");
// 简单的bean转为json
String s1 = gson.toJson(student1);
System.out.println("简单Bean转化为Json===" + s1);
// json转为简单Bean
Student student = gson.fromJson(s1, Student.class);
System.out.println("Json转为简单Bean===" + student);
// 结果:
// 简单Bean转化为Json==={"id":1,"name":"李坤","birthDay":"Jun 22, 2012 8:27:52 AM"}
// Json转为简单Bean===Student [birthDay=Fri Jun 22 08:27:52 CST 2012, id=1,
// name=李坤]
// //////////////////////////////////////////////////////////
Student student2 = new Student();
student2.setId(2);
student2.setName("曹贵生");
student2.setBirthDay(new Date());
Student student3 = new Student();
student3.setId(3);
student3.setName("柳波");
student3.setBirthDay(new Date());
List<Student> list = new ArrayList<Student>();
list.add(student1);
list.add(student2);
list.add(student3);
System.out.println("----------带泛型的List之间的转化-------------");
// 带泛型的list转化为json
String s2 = gson.toJson(list);
System.out.println("带泛型的list转化为json==" + s2);
// json转为带泛型的list
List<Student> retList = gson.fromJson(s2,
new TypeToken<List<Student>>() {
}.getType());
for (Student stu : retList) {
System.out.println(stu);
}
// 结果:
// 带泛型的list转化为json==[{"id":1,"name":"李坤","birthDay":"Jun 22, 2012 8:28:52 AM"},{"id":2,"name":"曹贵生","birthDay":"Jun 22, 2012 8:28:52 AM"},{"id":3,"name":"柳波","birthDay":"Jun 22, 2012 8:28:52 AM"}]
// Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=1, name=李坤]
// Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=2, name=曹贵生]
// Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=3, name=柳波]
}
}