Xutils的简单使用


Xutils的简单使用

    • DbUtils模块:
    • ViewUtils模块:
    • HttpUtils模块:
    • BitmapUtils模块:

xUtils 包含了很多实用的android工具。
xUtils 最初源于Afinal框架,进行了大量重构,使得xUtils支持大文件上传,更全面的http请求协议支持(10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…
xUitls最低兼容android 2.2 (api level 8)
目前xUtils主要有四大模块:
DbUtils模块: android中的orm框架,一行代码就可以进行增删改查;
支持事务,默认关闭;
可通过注解自定义表名,列名,外键,唯一性约束,NOT NULL约束,CHECK约束等(需要混淆的时候请注解表名和列名);
支持绑定外键,保存实体时外键关联实体自动保存或更新;
自动加载外键关联实体,支持延时加载;
支持链式表达查询,更直观的查询语义,参考下面的介绍或sample中的例子。
ViewUtils模块: android中的ioc框架,完全注解方式就可以进行UI,资源和事件绑定;
新的事件绑定方式,使用混淆工具混淆后仍可正常工作;
目前支持常用的20种事件绑定,参见ViewCommonEventListener类和包com.lidroid.xutils.view.annotation.event。
HttpUtils模块: 支持同步,异步方式的请求;
支持大文件上传,上传大文件不会oom;
支持GET,POST,PUT,MOVE,COPY,DELETE,HEAD,OPTIONS,TRACE,CONNECT请求;
下载支持301/302重定向,支持设置是否根据Content-Disposition重命名下载的文件;
返回文本内容的请求(默认只启用了GET请求)支持缓存,可设置默认过期时间和针对当前请求的过期时间。
BitmapUtils模块: 【Xutils的简单使用】加载bitmap的时候无需考虑bitmap加载过程中出现的oom和android容器快速滑动时候出现的图片错位等现象;
支持加载网络图片和本地图片;
内存管理使用lru算法,更好的管理bitmap内存;
可配置线程加载线程数量,缓存大小,缓存路径,加载显示动画等…
使用xUtils快速开发框架需要有以下权限:

混淆时注意事项:
添加Android默认混淆配置${sdk.dir}/tools/proguard/proguard-android.txt
不要混淆xUtils中的注解类型,添加混淆配置:-keep class * extends java.lang.annotation.Annotation { *; }
package com.example.myapplication; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import org.xutils.view.annotation.ContentView; import org.xutils.view.annotation.Event; import org.xutils.view.annotation.ViewInject; import org.xutils.x; //@ContentView(R.layout.activity_main) public class MainActivity extends AppCompatActivity {@ViewInject(R.id.btn_http) private Button buttonhttp; @ViewInject(R.id.btn_db) private Button buttondb; @Override protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); x.view().inject(this); } @Event(value = https://www.it610.com/article/{R.id.btn_http,R.id.btn_db},type = View.OnClickListener.class) private void Dianji(View v){switch (v.getId()){ case R.id.btn_http: Intent intent=new Intent(MainActivity.this,Main2Activity.class); startActivity(intent); break; case R.id.btn_db: Intent intent1=new Intent(MainActivity.this,Main3Activity.class); startActivity(intent1); break; default: break; } } }

package com.example.myapplication; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.ListView; import com.google.gson.Gson; import org.xutils.common.Callback; import org.xutils.http.RequestParams; import org.xutils.view.annotation.Event; import org.xutils.view.annotation.ViewInject; import org.xutils.x; import java.util.ArrayList; import java.util.List; public class Main2Activity extends AppCompatActivity {@ViewInject(R.id.httpbtn) private Button button; @ViewInject(R.id.lv) private ListView listView; ArrayList feet=new ArrayList<>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); x.view().inject(this); x.http().get(new RequestParams("http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=10&page=1"), new Callback.CommonCallback>() { @Override public void onSuccess(String result) { Gson gson=new Gson(); GsonBean gsonBean = gson.fromJson(result, GsonBean.class); List data = https://www.it610.com/article/gsonBean.getData(); Log.d("###http", result); for (int i=0; i

package com.example.myapplication; import android.content.Intent; import android.os.Environment; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ListView; import android.widget.Toast; import org.xutils.DbManager; import org.xutils.ex.DbException; import org.xutils.view.annotation.Event; import org.xutils.view.annotation.ViewInject; import org.xutils.x; public class Main3Activity extends AppCompatActivity {@ViewInject(R.id.bun_insert) private Button button; @ViewInject(R.id.bun_select) private Button button1; DbManager.DaoConfig daoConfig; DbManager db; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main3); x.view().inject(this); daoConfig = new DbManager.DaoConfig(); daoConfig.setDbName("Wyc"); daoConfig.setDbVersion(1); db = x.getDb(daoConfig); } @Event(value = https://www.it610.com/article/{R.id.bun_insert,R.id.bun_select},type = View.OnClickListener.class) private void Dianji(View v){switch (v.getId()){ case R.id.bun_insert: DbBean dbBean = new DbBean(); dbBean.setId(1); dbBean.setName("王宇晨"); try { db.save(dbBean); } catch (DbException e) { e.printStackTrace(); } Toast.makeText(this,"存入数据库",Toast.LENGTH_SHORT).show(); break; case R.id.bun_select:try { DbBean first = db.selector(DbBean.class).findFirst(); Toast.makeText(this,first.toString(),Toast.LENGTH_SHORT).show(); } catch (DbException e) { e.printStackTrace(); } break; default: break; } } }

package com.example.myapplication; import android.app.ProgressDialog; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.os.Environment; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import org.xutils.common.Callback; import org.xutils.http.RequestParams; import org.xutils.view.annotation.Event; import org.xutils.view.annotation.ViewInject; import org.xutils.x; import java.io.File; public class Main4Activity extends AppCompatActivity {@ViewInject(R.id.btn_down) private Button button; Callback.Cancelable cancelable; ProgressDialog progressDialog; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main4); x.view().inject(this); progressDialog = new ProgressDialog(this); progressDialog.setTitle("下载QQ"); progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); progressDialog.setCanceledOnTouchOutside(false); progressDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "暂停", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { cancelable.cancel(); } }); }@Event(value = https://www.it610.com/article/R.id.btn_down, type = View.OnClickListener.class) private void getdianji(View view) {RequestParams requestParams = new RequestParams(); requestParams.setUri("http://softfile.3g.qq.com:8080/msoft/179/24659/43549/qq_hd_mini_1.4.apk"); //设置断点续传requestParams.setAutoRename(true); requestParams.setSaveFilePath(Environment.getExternalStorageDirectory() + "/qq.apk"); requestParams.setCancelFast(true); cancelable = x.http().get(requestParams, new Callback.ProgressCallback() { @Override public void onSuccess(File result) { Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(result), "application/vnd.android.package-archive"); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); }@Override public void onError(Throwable ex, boolean isOnCallback) {}@Override public void onCancelled(CancelledException cex) {}@Override public void onFinished() { progressDialog.cancel(); }@Override public void onWaiting() {}@Override public void onStarted() { progressDialog.show(); }@Override public void onLoading(long total, long current, boolean isDownloading) {progressDialog.setProgress((int) (current * 100 / total)); } }); } }

package com.example.myapplication; import android.app.Application; import org.xutils.x; public class XmyApp extends Application { @Override public void onCreate() { super.onCreate(); x.Ext.init(this); x.Ext.setDebug(true); } }

package com.example.myapplication; import android.content.Context; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; import com.squareup.picasso.Picasso; import java.util.ArrayList; public class ListBaseAdapter extends BaseAdapter {ArrayList feet; Context context; public ListBaseAdapter(ArrayList feet, Context context) { this.feet = feet; this.context = context; }@Override public int getCount() { return feet.size(); }@Override public Object getItem(int position) { return feet.get(position); }@Override public long getItemId(int position) { return position; }@Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewHolder; if(convertView==null){ viewHolder=new ViewHolder(); convertView=View.inflate(context,R.layout.listview_item,null); viewHolder.textView=convertView.findViewById(R.id.item_item); viewHolder.imageView=convertView.findViewById(R.id.item_image); convertView.setTag(viewHolder); }else{ viewHolder = (ViewHolder) convertView.getTag(); } viewHolder.textView.setText(feet.get(position).name); Picasso.with(context).load(feet.get(position).imageurl).into(viewHolder.imageView); return convertView; }class ViewHolder{ TextView textView; ImageView imageView; } }

package com.example.myapplication; public class Foot {String name; String imageurl; public Foot(String name, String imageurl) { this.name = name; this.imageurl = imageurl; } }

package com.example.myapplication; import org.xutils.db.annotation.Column; import org.xutils.db.annotation.Table; @Table(name = "school") public class DbBean {@Column(name = "id",isId = true) private int id; @Column(name = "name") private String name; 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; }@Override public String toString() { return "DbBean{" + "id=" + id + ", name='" + name + '\'' + '}'; } }






Xutils的简单使用
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Xutils的简单使用
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Xutils的简单使用
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Xutils的简单使用
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