XUtils3

Xutis3简介
xUtils是基于Afinal开发的目前功能比较完善的一个Android开源框架,最近又发布了xUtil3.0,在增加新功能的同时又提高了框架的性能。
1.xUtils包含了很多实用的android工具; xUtils支持超大文件(超过2G)上传,更全面的http请求协议支持(11种谓词),拥有更加灵活的ORM,更多的事件注解支持且不受混淆影响;
2.Utils 最低兼容Android 4.0 (api level 14);
3.xUtils3变化较多所以建立了新的项目不在旧版(github.com/wyouflf/xUtils)上继续维护, 相对于旧版本:

HTTP实现替换HttpClient为UrlConnection, 自动解析回调泛型, 更安全的断点续传策略;支持标准的Cookie策略, 区分domain, path;事件注解去除不常用的功能, 提高性能;数据库api简化提高性能, 达到和greenDao一致的性能;图片绑定支持gif(受系统兼容性影响, 部分gif文件只能静态显示), webp; 支持圆角, 圆形, 方形等裁剪, 支持自动旋转。

1.使用XUtils3需要进行倒依赖
compile ‘org.xutils:xutils:3.3.36’
【XUtils3】2.在使用框架使用需要的添加的权限
<-- 网络请求 --> <-- 可写权限 --> <-- 可读权限 -->

3.Xutils3框架功能
package com.bwie.xutils.acivity; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import com.bwie.xutils.R; import com.bwie.xutils.app.MyApp; import com.bwie.xutils.bean.Student; import org.xutils.DbManager; import org.xutils.common.Callback; import org.xutils.ex.DbException; import org.xutils.http.RequestParams; import org.xutils.image.ImageOptions; import org.xutils.view.annotation.ContentView; import org.xutils.view.annotation.Event; import org.xutils.view.annotation.ViewInject; import org.xutils.x; import java.util.ArrayList; import java.util.List; @ContentView(R.layout.activity_main) public class MainActivity extends AppCompatActivity {@ViewInject(R.id.tv_zhujie) TextView tv_zhujie; @ViewInject(R.id.tv_Image) ImageView tv_Image; private String url = "http://www.93.gov.cn/93app/data.do"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //setContentView(R.layout.activity_main); x.view().inject(this); tv_zhujie.setText("这是我使用Xutils3的注解方式来找控件"); }@Event(type = View.OnClickListener.class, value = https://www.it610.com/article/{R.id.tv_Image, R.id.tv_zhujie, R.id.bt_insert, R.id.bt_find, R.id.bt_updata, R.id.bt_delete, R.id.bt_delete_db, R.id.bt_delete_table, R.id.bt_add}) private void onClick(View view) throws DbException { DbManager db= MyApp.getDb(); switch (view.getId()) { case R.id.tv_Image: loadPic(); getData(); break; //注解获取缓存的数据 case R.id.tv_zhujie: getCacheData(); break; //添加 case R.id.bt_insert: List students=new ArrayList<>(); students.add(new Student("张三")); students.add(new Student("李四")); students.add(new Student("王五")); students.add(new Student("赵六")); try { db.save(students); } catch (Exception e) { e.printStackTrace(); } break; //查询 case R.id.bt_find: try { Student student = db.findFirst(Student.class); Log.i("sss", student.toString()); List studentList = db.findAll(Student.class); for (Student st : studentList) { Log.i("sss", st.toString()); } } catch (DbException e) { e.printStackTrace(); } break; //修改数据库内容 case R.id.bt_updata: try { Student student=db.findById(Student.class,"2"); student.setName("段淇皓"); db.update(student,"name"); } catch (DbException e) { e.printStackTrace(); } break; //删除 case R.id.bt_delete: try { //Student student=db.findById(Student.class,"2"); //db.delete(student); //删除全部 db.delete(Student.class); } catch (DbException e) { e.printStackTrace(); } break; //删除数据库 case R.id.bt_delete_db: db.dropDb(); break; //删除表 case R.id.bt_delete_table: db.dropTable(Student.class); break; //添加 case R.id.bt_add: Student student=new Student("哈哈哈"); db.save(student); break; } }//图片长按事件 @Event(type = View.OnLongClickListener.class, value = https://www.it610.com/article/{R.id.tv_Image,R.id.tv_zhujie}) private boolean onLongClick(View view) { switch (view.getId()) { case R.id.tv_Image: postData(); break; } return true; }//get方式获取缓存数据 private void getCacheData() { RequestParams params = new RequestParams(url); params.addQueryStringParameter("channeId", "0"); params.addQueryStringParameter("startNum", "0"); //缓存时间 params.setCacheMaxAge(1000 * 40); x.http().get(params, new Callback.CacheCallback() { String result = null; @Override public void onSuccess(String result) { if (result != null) { this.result = result; Toast.makeText(MainActivity.this, "请求成功", Toast.LENGTH_SHORT).show(); } }@Override public void onError(Throwable ex, boolean isOnCallback) {}@Override public void onCancelled(CancelledException cex) {}@Override public void onFinished() {}@Override public boolean onCache(String result) { this.result = result; Toast.makeText(MainActivity.this, "缓存", Toast.LENGTH_SHORT).show(); return true; //true代表支持缓存 如果缓存时间没有过期就不走网络请求,false不支持缓存 } }); }//post获取数据 private void postData() { RequestParams params = new RequestParams(url); params.addBodyParameter("channelId", "0"); params.addBodyParameter("startNum", "0"); x.http().post(params, new Callback.CommonCallback() { @Override public void onSuccess(String result) {Toast.makeText(MainActivity.this, "post请求成功" + result, Toast.LENGTH_SHORT).show(); }@Override public void onError(Throwable ex, boolean isOnCallback) { Toast.makeText(MainActivity.this, "请求失败", Toast.LENGTH_SHORT).show(); }@Override public void onCancelled(CancelledException cex) {}@Override public void onFinished() {} }); }//get获取数据 private void getData() { RequestParams params = new RequestParams(url); params.addQueryStringParameter("channelId", "0"); params.addQueryStringParameter("startNum", "0"); x.http().get(params, new Callback.CommonCallback() { @Override public void onSuccess(String result) { Toast.makeText(MainActivity.this, "get请求成功" + result, Toast.LENGTH_SHORT).show(); }@Override public void onError(Throwable ex, boolean isOnCallback) {}@Override public void onCancelled(CancelledException cex) {}@Override public void onFinished() {} }); } /** * 加载图片属性 * //通过ImageOptions.Builder().set方法设置图片的属性 * ImageOptions imageOptions= new ImageOptions.Builder().setFadeIn(true).build(); //淡入效果 * //ImageOptions.Builder()的一些其他属性: * .setCircular(true) //设置图片显示为圆形 * .setSquare(true) //设置图片显示为正方形 * .setCrop(true).setSize(200,200) //设置大小 * .setAnimation(animation) //设置动画 * .setFailureDrawable(Drawable failureDrawable) //设置加载失败的动画 * .setFailureDrawableId(int failureDrawable) //以资源id设置加载失败的动画 * .setLoadingDrawable(Drawable loadingDrawable) //设置加载中的动画 * .setLoadingDrawableId(int loadingDrawable) //以资源id设置加载中的动画 * .setIgnoreGif(false) //忽略Gif图片 * .setParamsBuilder(ParamsBuilder paramsBuilder) //在网络请求中添加一些参数 * .setRaduis(int raduis) //设置拐角弧度 * .setUseMemCache(true) //设置使用MemCache,默认true */ //加载图片 private void loadPic() { String url = "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1504071880709&di=bfc7425296c71db832e6abf4804cd7dc&imgtype=0&src=https://www.it610.com/article/http%3A%2F%2Fc.hiphotos.baidu.com%2Fzhidao%2Fpic%2Fitem%2F1f178a82b9014a909461e9baa1773912b31bee5e.jpg"; ImageOptions options = new ImageOptions.Builder().setLoadingDrawableId(R.mipmap.a).setSize(200, 200).setRadius(20).setCircular(true).build(); x.image().bind(tv_Image, url, options); } }

4.框架需要进行初始化
package com.bwie.xutils.app; import android.app.Application; import org.xutils.DbManager; import org.xutils.x; import java.io.File; /** * Created by Love_you on 2017/8/30 0030. */ public class MyApp extends Application { @Override public void onCreate() { super.onCreate(); x.Ext.init(this); } //管理数据库初始化 public static DbManager getDb() { //创建DaoConfig DbManager.DaoConfig daoConfig = new DbManager.DaoConfig().setDbName("bw.db").setDbDir(new File("/mnt/sdcard")).setDbVersion(1); DbManager db = x.getDb(daoConfig); return db; } }

5.数据库bean的类型
package com.bwie.xutils.bean; import org.xutils.db.annotation.Column; import org.xutils.db.annotation.Table; /** * Created by Love_you on 2017/8/30 0030. */ //标签数据库 @Table(name = "Student",onCreated = "") public class Student { //创建主键id @Column(name = "id",isId = true,autoGen = true,property = "Not null") private int id; //数据库中的字段 @Column(name = "name") private String name; //无参构造器public Student() { }//有参构造器 public Student(String name) { this.name = name; }public int getId() { return id; }public String getName() { return name; }public void setId(int id) { this.id = id; }public void setName(String name) { this.name = name; }@Override public String toString() { return "Student{" + "id=" + id + ", name='" + name + '\'' + '}'; } }

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