心塞的Xutil的用法

1、添加现在依赖库（如果不成功，重启程序）

compile 'com.android.support:appcompat-v7:24.2.1'

自定义MyApplication

import org.xutils.x;//注意jar包一定不能导错/** * Created by Administrator on 2017/3/21. */public class MyApplication extends Application {    @Override    public void onCreate() {        super.onCreate();        x.Ext.init(this);        x.Ext.setDebug(BuildConfig.DEBUG); // 是否输出debug日志, 开启debug会影响性能.    }

2、Manifest中添加属性

application
android:name=".MyApplication"

3、MainAcvitity中的配置：

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)//加载布局public class MainActivity extends AppCompatActivity {    @ViewInject(value = R.id.lv)//实例化对象    private ListView lv;    private String[] data = new String[]{"Image加载", "B", "C", "D"};    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        x.view().inject(this);//开启注解        setLvAdapter();    }    /**     * 点击按钮的监听     * @param view     */    @Event(value = R.id.btn_parse, type = View.OnClickListener.class)    private void showToast(View view) {        Toast.makeText(this, "点击按钮", Toast.LENGTH_SHORT).show();    }    /**     * 展示ListView     */    private void setLvAdapter() {        ArrayAdapter arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, data);        lv.setAdapter(arrayAdapter);    }    /**     * 点击图片的跳转展示事件     * @param adapterView     * @param view     * @param i     * @param l     */    @Event(value = R.id.lv, type = AdapterView.OnItemClickListener.class)    private void itemClick(AdapterView<?> adapterView, View view, int i, long l) {        Intent intent = new Intent(this, MainActivity.class);        switch (i) {            case 0:                intent.setClass(this, ImageActivity.class);                break;        }        startActivity(intent);        Toast.makeText(this, data[i], Toast.LENGTH_SHORT).show();    }

4、xutil中展示图片信息的方法

import org.xutils.common.util.DensityUtil;import org.xutils.image.ImageOptions;import org.xutils.x;public class ImageActivity extends AppCompatActivity {    private ImageView iv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_image);        iv = (ImageView) findViewById(R.id.iv);        ImageOptions imageOptions = new ImageOptions.Builder()                .setSize(DensityUtil.dip2px(120), DensityUtil.dip2px(120))                .setRadius(DensityUtil.dip2px(5))                // 如果ImageView的大小不是定义为wrap_content, 不要crop.                .setCrop(true) // 很多时候设置了合适的scaleType也不需要它.                // 加载中或错误图片的ScaleType                //.setPlaceholderScaleType(ImageView.ScaleType.MATRIX)                .setImageScaleType(ImageView.ScaleType.CENTER_CROP)                .setLoadingDrawableId(R.mipmap.ic_launcher)                .setFailureDrawableId(R.mipmap.ic_launcher)                .build();        x.image().bind(iv, "http://img.appd.lengxiaohua.cn/2016/05/24/a21ed7c5b5f1f_o.jpg", imageOptions);    }}

5、xutil中网络请求的方法

import org.xutils.common.Callback;import org.xutils.http.RequestParams;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_net)//加载布局文件public class NetActivity extends AppCompatActivity {    @ViewInject(R.id.tv_result)    private TextView tv_result;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        x.view().inject(this);//开启注解模式    }    @Event(value = R.id.btn_rusult,type = View.OnClickListener.class)    private void getResult(View view){        RequestParams params=new RequestParams("http://192.168.15.114:8080/HttpTest/Login");        params.addBodyParameter("username","zdsoft");        params.addBodyParameter("password","123456");        Callback.Cancelable cancelable=x.http().get(params, new Callback.CommonCallback<String>() {            @Override            public void onSuccess(String result) {                tv_result.setText(result);            }            @Override            public void onError(Throwable ex, boolean isOnCallback) {                tv_result.setText(ex.getMessage());            }            @Override            public void onCancelled(CancelledException cex) {            }            @Override            public void onFinished() {            }        });//        cancelable.cancel();//取消请求    }

6、xutil中操作数据库DB的方法

新建实体类，通过注解的方式设置实体类的字段名以及字段约束

import org.xutils.db.annotation.Column;import org.xutils.db.annotation.Table;/** * Created by Administrator on 2017/3/21. */@Table(name = "user")public class User {    @Column(name = "id", isId = true)    private int id;//该属性储存到哪个字段上    @Column(name = "password")    private String password;    @Column(name = "username")    private String username;    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    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;    }

import org.xutils.DbManager;import org.xutils.ex.DbException;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.List;@ContentView(R.layout.activity_db)public class DBActivity extends AppCompatActivity {    @ViewInject(value = R.id.et_user)    private EditText et_user;    @ViewInject(value = R.id.et_pwd)    private EditText et_pwd;    private DbManager.DaoConfig config;    @ViewInject(value = R.id.tv_content)    private TextView tv_content;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        x.view().inject(this);        //定义数据库对象，设置数据库名字和数据库版本号        config = new DbManager.DaoConfig().setDbName("test.db").setDbVersion(1);    }    /**     * 存数据的方法     */    @Event(value = R.id.btn_save, type = View.OnClickListener.class)    private void save() {        User user = new User();        user.setUsername(et_user.getText().toString());        user.setPassword(et_pwd.getText().toString());        DbManager manager = x.getDb(config);        try {            manager.saveBindingId(user);//绑定ID保存数据        } catch (DbException e) {            e.printStackTrace();        }        quaryAll();    }    /**     * 查询数据的方法     */    private void quaryAll() {        DbManager msg = x.getDb(config);        try {            List<User> list = msg.selector(User.class).findAll();//查询全部            for (User user : list) {                tv_content.append("id=" + user.getId() + " " +                        "username=" + user.getUsername().toString() + " password=" + user.getPassword().toString());            }        } catch (DbException e) {            e.printStackTrace();        }    }