Android Xutils3 框架

		DbUtils db = DbUtils.create(this); 
		User user = new User(); //这里需要注意的是User对象必须有id属性，或者有通过@ID注解的属性
		user.setEmail("wyouflf@qq.com"); 
		user.setName("wyouflf");
		db.save(user); // 使用saveBindingId保存实体时会为实体的id赋值 ... 
		// 查找
		Parent entity = db.findById(Parent.class, parent.getId());
		Parent entity = db.findFirst(entity);
		//通过entity的属性查找 
		List<Parent> list = db.findAll(entity);
		//通过entity的属性查找 
		Parent Parent = db.findFirst(Selector.from(Parent.class).where("name","=","test")); 
		List<Parent> list = db.findAll(Selector.from(Parent.class) .where("id","<",54) .and("age",">",30) .or("age","<",20) .orderBy("id") .limit(10) .offset(0)); 
		DbModel dbModel = db.findDbModelAll(Selector.from(Parent.class).select("name"));
		//select("name")只取出name列 
		List<DbModel> dbModels = db.findDbModelAll(Selector.from(Parent.class).groupBy("name").select("name", "count(name)"));
		... 
		

@ContentView(R.layout.activity_main)
	public class MainActivity extends Activity {
		
		@ViewInject(R.id.textView)
		TextView textView; // 取消了之前使用方法名绑定事件的方式，使用id绑定不受混淆影响
		
		//在使用注解对象之前调用(如onCreate中)：
		@Override 
		public void onCreate(Bundle savedInstanceState) { 
			super.onCreate(savedInstanceState);
			
			x.view().inject(this); 
			... 
			textView.setText("some text..."); 
			... 
		} 
		
		@Event(value = { R.id.buhuo_line, R.id.fuhe_line })  
		public void testButtonClick(View v) {//点击事件
			... 
		}
		... 
		
	}

x.image().bind(imageView, url, imageOptions);
x.image().bind(imageView, "file:///sdcard/test.gif", imageOptions);
x.image().bind(imageView, "assets://test.gif", imageOptions);
x.image().bind(imageView, url, imageOptions, new Callback.CommonCallback<Drawable>() {...});
x.image().loadDrawable(url, imageOptions, new Callback.CommonCallback<Drawable>() {...});
x.image().loadFile(url, imageOptions, new Callback.CommonCallback<File>() {...});

	JSONObject js = new JSONObject();
		try {
			js.put("loginName", name + "");
			js.put("password", pass + "");
		} catch (JSONException e1) {
			e1.printStackTrace();
		}
		showDialogProgress(LoginActivity.this, "登陆中，请稍后...");
		String nonce = RandomUtil.getRandomStr();
		System.out.println("nonce的值为" + nonce);
		String signature = "";
		
		String url = "http://"
				+ ShareDataLocal.getInstance(getActivity()).getServer()
				+ MyHttpCookies.webroot + "login.jspx";
		System.out.println("返回*********************************" + url);
		// 请求参数
		RequestParams params = new RequestParams(url);
		params.addBodyParameter("nonce", nonce);
		params.addBodyParameter("signature", signature);
		params.addBodyParameter("postData", js.toString());
		params.setAsJsonContent(true);
		params.setCharset("utf-8");
		System.out.println("返回params*********************************"
				+ params.toString());
		x.http().post(params, new CommonCallback<String>() {
			@Override
			public void onCancelled(CancelledException arg0) {
				System.out
						.println("返回onCancelled*********************************"
								+ arg0.getMessage());
			}
			@Override
			public void onError(Throwable arg0, boolean arg1) {
				System.out.println("返回onError*********************************"
						+ arg1 + "-----" + arg0.getMessage());
			}
			@Override
			public void onFinished() {
				System.out
						.println("返回onFinished*********************************");
			}
			@Override
			public void onSuccess(String arg0) {
				System.out.println("返回成功*********************************"
						+ arg0);
				// 成功下载，显示到txtv上面
				// txtv.setText(arg0);
			}
		});
	}

RequestParams params = new RequestParams(); params.addHeader("name", "value"); params.addQueryStringParameter("name", "value"); // 只包含字符串参数时默认使用BodyParamsEntity， // 类似于UrlEncodedFormEntity（"application/x-www-form-urlencoded"）。 params.addBodyParameter("name", "value"); // 加入文件参数后默认使用MultipartEntity（"multipart/form-data"）， // 如需"multipart/related"，xUtils中提供的MultipartEntity支持设置subType为"related"。 // 使用params.setBodyEntity(httpEntity)可设置更多类型的HttpEntity（如： // MultipartEntity,BodyParamsEntity,FileUploadEntity,InputStreamUploadEntity,StringEntity）。 params.addBodyParameter("file", new File("path")); ... HttpUtils http = new HttpUtils(); http.send(HttpRequest.HttpMethod.POST, "uploadUrl....", params, new RequestCallBack<String>() { @Override public void onStart() { testTextView.setText("conn..."); } @Override public void onLoading(long total, long current) { testTextView.setText(current + "/" + total); } @Override public void onSuccess(String result) { testTextView.setText("upload response:" + result.getPath()); } @Override public void onFailure(HttpException error, String msg) { testTextView.setText(error.getExceptionCode() + ":" + msg); } }); 

HttpUtils http = new HttpUtils(); HttpHandler handler = http.download("http://apache.dataguru.cn/httpcomponents/httpclient/source/httpcomponents-client-4.2.5-src.zip", "/sdcard/httpcomponents-client-4.2.5-src.zip", true, // 如果目标文件存在，接着未完成的部分继续下载。 true, // 如果从请求返回信息中获取到文件名，下载完成后自动重命名。 new RequestCallBack<File>() { @Override public void onStart() { testTextView.setText("conn..."); } @Override public void onLoading(long total, long current) { testTextView.setText(current + "/" + total); } @Override public void onSuccess(File result) { testTextView.setText("downloaded:" + result.getPath()); } @Override public void onFailure(HttpException error, String msg) { testTextView.setText(msg); } }); ... //调用stop()方法停止下载 handler.stop(); ... 

ImageOptions options = new ImageOptions.Builder()
		// 是否忽略GIF格式的图片
				.setIgnoreGif(false)
				// 图片缩放模式
				.setImageScaleType(ScaleType.CENTER_CROP)
				// 下载中显示的图片
				.setLoadingDrawableId(R.drawable.ic_launcher)
				// 下载失败显示的图片
				.setFailureDrawableId(R.drawable.ic_launcher)
				// 得到ImageOptions对象
				.build();x.image().bind(fuhe_img, "assets://test.gif", options);

// 自动添加TAG，格式： className[methodName, lineNumber] // 可设置全局的allowD，allowE...，控制是否输出log。 LogUtils.d("wyouflf");