鸿蒙开源组件——xUtils3

方式一：
通过library生成har包，添加har包到libs文件夹内
在entry的gradle内添加如下代码
implementation fileTree(dir: 'libs', include: ['*.jar', '*.har'])

方式二：
allprojects{
    repositories{
        mavenCentral()
    }
}
implementation 'io.openharmony.tpc.thirdlib:xUtils3:1.0.0' 
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// 在application的onCreate中初始化
@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.
    ...
}
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/**
 * 1. 方法必须私有限定,
 * 2. 方法参数形式必须和type对应的Listener接口一致.
 * 3. 注解参数value支持数组: value={id1, id2, id3}
 * 4. 其它参数说明见{@link org.xutils.event.annotation.Event}类的说明.
 **/
@Event(value = {ResourceTable.Id_btn_viewbind})
private void onTest1Click(Component view) {

...
}
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/**
 * 数据库操作示例
 */
public class DbAbilitySlice extends AbilitySlice {

    @ViewInject(ResourceTable.Id_btn_add)
    Button btnDbAdd;

    @ViewInject(ResourceTable.Id_btn_del)
    Button btnDbDel;

    @ViewInject(ResourceTable.Id_btn_update)
    Button btnDbUpdate;

    @ViewInject(ResourceTable.Id_btn_select)
    Button btnDbSelect;

    @ViewInject(ResourceTable.Id_text_show)
    Text txtShow;

    DbManager.DaoConfig daoConfig;

    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_ability_db);
        x.view().inject(this);

        daoConfig = new DbManager.DaoConfig()
                .setDbName("testaa.db")
                // 不设置dbDir时, 默认存储在app的私有目录.
                .setDbDir(new File("/sdcard")) // "sdcard"的写法并非最佳实践, 这里为了简单, 先这样写了.
                .setDbVersion(2)
                .setDbOpenListener(new DbManager.DbOpenListener() {
                    @Override
                    public void onDbOpened(DbManager db) {
                        // 开启WAL, 对写入加速提升巨大
//                        db.getDatabase().enableWriteAheadLogging();
                    }
                })
                .setDbUpgradeListener(new DbManager.DbUpgradeListener() {
                    @Override
                    public void onUpgrade(DbManager db, int oldVersion, int newVersion) {
                        // TODO: ...
                        // db.addColumn(...);
                        // db.dropTable(...);
                        // ...
                        // or
                        // db.dropDb();
                    }
                });


    }

    @Event(value = {ResourceTable.Id_btn_add, ResourceTable.Id_btn_del, ResourceTable.Id_btn_update, ResourceTable.Id_btn_select})
    private void onTest1Click(Component view) {
        if (view.getId() == ResourceTable.Id_btn_add) {
            dbSave();
        }
        if (view.getId() == ResourceTable.Id_btn_del) {
            dbDel();
        }
        if (view.getId() == ResourceTable.Id_btn_update) {
            dbUpdate();
        }
        if (view.getId() == ResourceTable.Id_btn_select) {
            dbSelect();
        }
    }

    /**
     * 添加
     */
    private void dbSave() {
        try {
            btnDbAdd.setText("添加");
            DbManager db = x.getDb(daoConfig);
            ArrayList<ChildInfo> childInfos = new ArrayList<>();
            childInfos.add(new ChildInfo("zhangsan"));
            childInfos.add(new ChildInfo("lisi"));
            childInfos.add(new ChildInfo("wangwu"));
            childInfos.add(new ChildInfo("zhaoliu"));
            childInfos.add(new ChildInfo("qianqi"));
            childInfos.add(new ChildInfo("sunba"));
            db.save(childInfos);
            btnDbAdd.setText("添加成功");
        } catch (Exception e) {

        }
    }

    /**
     * 删除
     */
    private void dbDel() {
        try {
            btnDbDel.setText("删除");
            DbManager db = x.getDb(daoConfig);
            db.delete(ChildInfo.class);
            btnDbDel.setText("删除成功");
        } catch (Exception e) {

        }
    }

    /**
     * 修改
     */
    private void dbUpdate() {
        try {
            btnDbUpdate.setText("修改");
            DbManager db = x.getDb(daoConfig);
            ChildInfo first = db.findFirst(ChildInfo.class);
            first.setcName("zhansan2");
            db.update(first, "c_name"); //c_name：表中的字段名
            btnDbUpdate.setText("修改成功");
        } catch (Exception e) {

        }
    }

    /**
     * 查询
     */
    private void dbSelect() {
        try {
            btnDbSelect.setText("查询");
            DbManager db = x.getDb(daoConfig);
            String result = "";
//            ChildInfo first = db.findFirst(ChildInfo.class);
//            List<ChildInfo> all = db.selector(ChildInfo.class).where("id", ">", 0).and("id", "<", 4).findAll();
            List<ChildInfo> all = db.selector(ChildInfo.class).findAll();
            for (ChildInfo childInfo : all) {
                result += childInfo.toString()+"\n";
            }
            btnDbSelect.setText("查询成功");
            txtShow.setText("查询结果:"+result);
        } catch (Exception e) {

        }
    }
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@Event(value = {ResourceTable.Id_btn_http_get})
private void onTest2Click(View view) {
    RequestParams params = new RequestParams("https://www.baidu.com/s");
    // params.setSslSocketFactory(...); // 如果需要自定义SSL
    params.addQueryStringParameter("wd", "xUtils");
    x.http().get(params, new Callback.CommonCallback<String>() {
        @Override
        public void onSuccess(String result) {
            Toast.makeText(x.app(), result, Toast.LENGTH_LONG).show();
        }

        @Override
        public void onError(Throwable ex, boolean isOnCallback) {
            Toast.makeText(x.app(), ex.getMessage(), Toast.LENGTH_LONG).show();
        }

        @Override
        public void onCancelled(CancelledException cex) {
            Toast.makeText(x.app(), "cancelled", Toast.LENGTH_LONG).show();
        }

        @Override
        public void onFinished() {

        }
    });
}
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x.image().bind(imageView, url, imageOptions, new Callback.CommonCallback<PixelMap>() {...});
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