心塞的Xutil的用法

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92 阅读3分钟

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();
        }
    }
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