xUtils3.0框架學(xué)習(xí)筆記分享

更新時(shí)間：2016年11月22日 17:07:57 作者：遲做總比不做強(qiáng)

這篇文章主要為大家分享了xUtils3.0框架學(xué)習(xí)筆記，xUtils開(kāi)源框架的功能介紹,具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

xUtils是開(kāi)速開(kāi)發(fā)安卓項(xiàng)目的開(kāi)源框架，開(kāi)源項(xiàng)目地址：https://github.com/wyouflf/xUtils3。使用起來(lái)非常方便。主要功能包括：

1、xUtils 支持超大文件(超過(guò)2G)上傳，更全面的http請(qǐng)求協(xié)議支持(11種謂詞)。

2、擁有更加靈活的ORM，更多的事件注解支持且不受混淆影響。

3、圖片綁定支持gif(受系統(tǒng)兼容性影響, 部分gif文件只能靜態(tài)顯示), webp; 支持圓角, 圓形, 方形等裁剪, 支持自動(dòng)旋轉(zhuǎn)等。

4、數(shù)據(jù)庫(kù)api簡(jiǎn)化提高性能, 達(dá)到和greenDao一致的性能。

5、HTTP實(shí)現(xiàn)替換HttpClient為UrlConnection, 自動(dòng)解析回調(diào)泛型, 更安全的斷點(diǎn)續(xù)傳策略等。

控件及事件注解綁定，方便高效HTTP請(qǐng)求，簡(jiǎn)單地?cái)?shù)據(jù)庫(kù)操作方式，確實(shí)是一款非常有助于我們快速開(kāi)發(fā)項(xiàng)目的開(kāi)源框架。
參考github上面demo及相關(guān)資料，寫(xiě)了一個(gè)學(xué)習(xí)的demo，分別從注解，圖片，HTTP及數(shù)據(jù)庫(kù)四個(gè)方面進(jìn)行了代碼編寫(xiě)。

首先是在AndroidStudio中配置項(xiàng)目：
第一步：
在AndroidStudio項(xiàng)目的build.gradle文件中添加compile ‘org.xutils:xutils:3.3.36'：

dependencies {
 compile fileTree(dir: 'libs', include: ['*.jar'])
 testCompile 'junit:junit:4.12'
 compile 'com.android.support:appcompat-v7:23.4.0'
 compile 'org.xutils:xutils:3.3.36'
}

添加好后build下工程即可。

第二步：
在AndroidManifest.xml中添加對(duì)應(yīng)權(quán)限：

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

第三步：在項(xiàng)目中自定義Application，初始化xUtils3.0。

/**
 * description：
 * 作者：ldm
 * 時(shí)間：20162016/6/22 09:03
 * 郵箱：1786911211@qq.com
 */
public class BaseApplication extends Application {
 @Override
 public void onCreate() {
 super.onCreate();
 x.Ext.init(this);//在自定義的Application中初始化XUtils3.0
 }
}

記得把我們定義的Application配置到AndroidManifest.xml中。
接下來(lái)就可以作用xUtils3.0進(jìn)行快速開(kāi)發(fā)了。

—– 第一部分：注解示例—–

/**
 * description：xUtils3.0框架注解功能
 * 作者：ldm
 * 時(shí)間：20162016/6/22 09:17
 * 郵箱：1786911211@qq.com
 */
@ContentView(R.layout.activity_annotation)
public class AnnotationActivity extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 x.view().inject(this);
 FragmentManager fragmentManager = getFragmentManager();
 FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
 TestFragment fragment = new TestFragment();
 fragmentTransaction.add(R.id.fra_layout, fragment);
 fragmentTransaction.commit();
 }
}

—–注解功能對(duì)應(yīng)地Fragment—–

/**
 * description：xUtils3.0框架注解之：Fragment中注解使用
 * 作者：ldm
 * 時(shí)間：20162016/6/22 09:28
 * 郵箱：1786911211@qq.com
 */
@ContentView(R.layout.frag_test)//給Fragment綁定布局文件
public class TestFragment extends Fragment {
 @ViewInject(R.id.test_listview)
 private ListView listView;
 private List<ListBean> datas;

 public TestFragment() {
 super();
 }

 @Nullable
 @Override
 public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
 return x.view().inject(this, inflater, container);//調(diào)用x.view().inject()方法返回view
 }

 //onCreateView是創(chuàng)建的時(shí)候調(diào)用,onViewCreated是在onCreateView后被觸發(fā)的事件
 @Override
 public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
 super.onViewCreated(view, savedInstanceState);
 constructDatas();
 listView.setAdapter(new TestAdapter(getActivity(), datas));
 }

 private void constructDatas() {
 datas = new ArrayList<>();
 for (int i = 0; i < 15; i++) {
 ListBean bean = new ListBean("這是第" + i + "個(gè)標(biāo)題", "這里都是相同的內(nèi)容");
 datas.add(bean);
 }
 }

 //ListView的item點(diǎn)擊事件注解操作
 @Event(type = AdapterView.OnItemClickListener.class, value = R.id.test_listview)
 private void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 Toast.makeText(getActivity(), "點(diǎn)擊了第" + position + "個(gè)item", Toast.LENGTH_LONG).show();
 }

 //長(zhǎng)按事件注解操作
 @Event(type = AdapterView.OnItemLongClickListener.class, value = R.id.test_listview)
 private boolean onLongItemClick(AdapterView<?> parent, View view, int position, long id) {
 Toast.makeText(getActivity(), "長(zhǎng)按第" + position + "個(gè)item", Toast.LENGTH_LONG).show();
 return true;
 }
}

—–第二部分：圖片加載示例—–

/**
 * description：xUtils3.0框架圖片功能
 * 作者：ldm
 * 時(shí)間：20162016/6/22 09:17
 * 郵箱：1786911211@qq.com
 */
@ContentView(R.layout.activity_image)
public class ImageActivity extends Activity {
 @ViewInject(R.id.image_01)
 private ImageView image_01;
 @ViewInject(R.id.image_02)
 private ImageView image_02;
 @ViewInject(R.id.image_03)
 private ImageView image_03;
 @ViewInject(R.id.image_04)
 private ImageView image_04;
 private String url_01 = "";
 private String url_02 = "";
 private String url_03 = "";

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 x.view().inject(this);//需要添加這句代碼，否則不會(huì)關(guān)聯(lián)到布局
 }

 //加載網(wǎng)絡(luò)圖片第一種方法
 @Event(value = R.id.image_01)
 private void loadImageMethodOne(View v) {
 //直接調(diào)用 bind(ImageView view, String url)方法，傳入對(duì)應(yīng)控件及url即可
 x.image().bind(image_01, url_01);
 }

 //加載網(wǎng)絡(luò)圖片第二種方法
 @Event(value = R.id.image_02)
 private void loadImageMethodTwo(View v) {
 //創(chuàng)建圖片參數(shù)設(shè)置類ImageOptions
 ImageOptions options = new ImageOptions.Builder().build();
 //直接調(diào)用bind(ImageView view, String url, ImageOptions options)方法，傳入對(duì)應(yīng)參數(shù)
 x.image().bind(image_02, url_02, options);
 }

 //加載網(wǎng)絡(luò)圖片第三種方法
 @Event(value = R.id.image_03)
 private void loadImageMethodThree(View v) {
 //調(diào)用bind(ImageView view, String url, Callback.CommonCallback<Drawable> callback)
 x.image().bind(image_03, url_03, new Callback.CacheCallback<Drawable>() {
 @Override
 public boolean onCache(Drawable result) {//可以在這里設(shè)置圖片保存等操作
 return false;
 }

 @Override
 public void onSuccess(Drawable result) {//獲取成功

 }

 @Override
 public void onError(Throwable ex, boolean isOnCallback) {//獲取失敗

 }

 @Override
 public void onCancelled(CancelledException cex) {//取消操作

 }

 @Override
 public void onFinished() {//完成操作

 }
 });
 }

 //加載本地圖片
 @Event(value = R.id.image_04)
 private void loadImageMethodFour(View v) {
 ImageOptions options = new ImageOptions.Builder().
 setImageScaleType(ImageView.ScaleType.FIT_CENTER).
 setUseMemCache(true).
 build();//可以設(shè)置options各項(xiàng)參數(shù)
 // assets下的圖片
 // x.image().bind(image_04, "assets://test.png", options);
 // SD卡下圖片
 // x.image().bind(image_04, new File("/sdcard/test.png").toURI().toString(), options);
 x.image().bind(image_04, "/sdcard/test.gif", options);
 }
}

—–第三部分：HTTP請(qǐng)求—–

/**
 * description：xUtils框架之Http請(qǐng)求
 * 作者：ldm
 * 時(shí)間：20162016/6/22 09:17
 * 郵箱：1786911211@qq.com
 */
@ContentView(R.layout.activity_http)
public class HttpActivity extends Activity {
 @ViewInject(R.id.get)
 private Button get;
 @ViewInject(R.id.post)
 private Button post;
 @ViewInject(R.id.upload)
 private Button upLoad;
 @ViewInject(R.id.download)
 private Button downLoad;
 private static final String TAG = "HttpActivity";

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 x.view().inject(this);
 }

 //HTTP請(qǐng)求之GET請(qǐng)求
 @Event(type = View.OnClickListener.class, value = R.id.get)
 private void httpGetOnClick(View v) {
 String url = "http://www.baidu.com";
 final ProgressDialog dia = new ProgressDialog(this);
 dia.setMessage("加載中....");
 dia.show();
 RequestParams params = new RequestParams(url);
 x.http().get(params, new Callback.CommonCallback<String>() {
 @Override
 public void onSuccess(String result) {
 //加載成功回調(diào)，返回獲取到的數(shù)據(jù)
 Log.i(TAG, "onSuccess: " + result);
 }

 @Override
 public void onFinished() {
 dia.dismiss();//加載完成
 }

 @Override
 public void onCancelled(CancelledException cex) {

 }

 @Override
 public void onError(Throwable ex, boolean isOnCallback) {

 }
 });
 }

 //HTTP請(qǐng)求之POST請(qǐng)求
 @Event(type = View.OnClickListener.class, value = R.id.post)
 private void httpPostOnClick(View v) {
 String url = "this is request url for post";
 final ProgressDialog dia = new ProgressDialog(this);
 dia.setMessage("加載中....");
 dia.show();
 RequestParams params = new RequestParams(url);
 params.addParameter("userName", "admin");//添加Post請(qǐng)求參數(shù),如果是get請(qǐng)求，會(huì)直接添加到url后面
 params.addBodyParameter("passWord", "123456");
 params.addHeader("head", "給Head添加信息");//addHeader添加Head信息
 x.http().post(params, new Callback.CommonCallback<String>() {
 @Override
 public void onSuccess(String result) {
 //加載成功回調(diào)，返回獲取到的數(shù)據(jù)
 Log.i(TAG, "onSuccess: " + result);
 }

 @Override
 public void onFinished() {
 dia.dismiss();//加載完成
 }

 @Override
 public void onCancelled(CancelledException cex) {

 }

 @Override
 public void onError(Throwable ex, boolean isOnCallback) {

 }
 });
 }

 //HTTP請(qǐng)求之文件上傳
 @Event(type = View.OnClickListener.class, value = R.id.upload)
 private void upLoadOnClick(View v) {
 String upUrl = "/mnt/sdcard/pic/test.jpg";//指定要上傳的文件
 final ProgressDialog dia = new ProgressDialog(this);
 dia.setMessage("加載中....");
 dia.show();
 RequestParams params = new RequestParams(upUrl);
 params.addBodyParameter("file", new File(upUrl));
 x.http().post(params, new Callback.CommonCallback<String>() {
 @Override
 public void onSuccess(String result) {
 //加載成功回調(diào)，返回獲取到的數(shù)據(jù)
 Log.i(TAG, "onSuccess: " + result);
 }

 @Override
 public void onFinished() {
 dia.dismiss();//加載完成
 }

 @Override
 public void onCancelled(CancelledException cex) {

 }

 @Override
 public void onError(Throwable ex, boolean isOnCallback) {

 }
 });
 }

 //HTTP請(qǐng)求之文件下載
 @Event(type = View.OnClickListener.class, value = R.id.download)
 private void downLoadOnClick(View v) {
 String downUrl = "please input download url";
 final ProgressDialog dia = new ProgressDialog(this);
 dia.setMessage("加載中....");
 dia.show();
 RequestParams params = new RequestParams(downUrl);
 x.http().post(params, new Callback.CommonCallback<File>() {
 @Override
 public void onSuccess(File result) {
 //下載成功
 Intent in = new Intent(Intent.ACTION_VIEW);
 in.setDataAndType(Uri.fromFile(result), "application/vnd.android.package-archive");//比如我們下載的apk文件，直接安裝
 startActivity(in);
 }

 @Override
 public void onFinished() {
 dia.dismiss();
 }

 @Override
 public void onCancelled(CancelledException cex) {

 }

 @Override
 public void onError(Throwable ex, boolean isOnCallback) {

 }
 });
 }
}

—-第四部分：數(shù)據(jù)庫(kù)操作——

/**
 * description：xUtils3.0框架數(shù)據(jù)庫(kù)操作
 * 作者：ldm
 * 時(shí)間：20162016/6/22 09:17
 * 郵箱：1786911211@qq.com
 */

@ContentView(R.layout.activity_db)
public class DatabaseActivity extends Activity {
 @ViewInject(R.id.create)
 private Button create;
 @ViewInject(R.id.add)
 private Button add;
 @ViewInject(R.id.delete)
 private Button delete;
 @ViewInject(R.id.query)
 private Button query;
 @ViewInject(R.id.update)
 private Button update;
 @ViewInject(R.id.del_db)
 private Button del_db;
 private DbManager.DaoConfig daoConfig;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 x.view().inject(this);
 }

 private void initDataBase() {
 daoConfig = new DbManager.DaoConfig()
 .setDbName("test.db")//數(shù)據(jù)庫(kù)名稱
 // 不設(shè)置dbDir時(shí), 默認(rèn)存儲(chǔ)在app的私有目錄.
 .setDbDir(new File("/sdcard")) // "sdcard"的寫(xiě)法并非最佳實(shí)踐, 這里為了簡(jiǎn)單, 先這樣寫(xiě)了.
 .setDbVersion(2)//設(shè)置版本號(hào)
 .setDbOpenListener(new DbManager.DbOpenListener() {
  @Override
  public void onDbOpened(DbManager db) {
  // 開(kāi)啟WAL, 對(duì)寫(xiě)入加速提升巨大
  db.getDatabase().enableWriteAheadLogging();
  }
 })
 .setDbUpgradeListener(new DbManager.DbUpgradeListener() {//數(shù)據(jù)庫(kù)升級(jí)
  @Override
  public void onUpgrade(DbManager db, int oldVersion, int newVersion) {
  // TODO: ...
  // db.addColumn(...);
  // db.dropTable(...);
  // ...
  // or
  // db.dropDb();
  }
 });
 }

 //創(chuàng)建數(shù)據(jù)庫(kù)及表格
 @Event(value = R.id.create)
 private void createOnClick(View v) throws Exception {
 initDataBase();
 DbManager db = x.getDb(daoConfig);
 Teacher t = new Teacher("張三", 28, "English", 1);
 db.save(t);//調(diào)用這句話，則可以創(chuàng)建表格，并把數(shù)據(jù)存入
 }

 //添加數(shù)據(jù)
 @Event(value = R.id.add)
 private void addOnClick(View v) throws Exception {
 DbManager db = x.getDb(daoConfig);
 Teacher t = new Teacher("李四", 38, "Math", 3);
 db.save(t);//如果表格存在，并把數(shù)據(jù)存入
 List<Teacher> list = new ArrayList<>();
 list.add(new Teacher("王五", 30, "Engilsh", 2));
 list.add(new Teacher("趙六", 40, "Chinese", 3));
 list.add(new Teacher("陳七", 50, "Math", 4));
 db.save(list);//可以這樣保存多條數(shù)據(jù)到指定表格
 }

 //刪除數(shù)據(jù)
 @Event(value = R.id.delete)
 private void deleteOnClick(View v) throws Exception {
 DbManager db = x.getDb(daoConfig);
 WhereBuilder wb = WhereBuilder.b();
 wb.and("level", "=", 1);
 db.delete(Teacher.class, wb);//刪除等級(jí)為1的教師
 }

 //修改數(shù)據(jù)
 @Event(value = R.id.update)
 private void updateOnClick(View v) throws Exception {
 DbManager db = x.getDb(daoConfig);
 db.update(Teacher.class, WhereBuilder.b().and("name", "=", "王五"), new KeyValue("name", "朱八"));//把王五的名字改成朱八
 }

 //查詢數(shù)據(jù)
 @Event(value = R.id.query)
 private void queryOnClick(View v) throws Exception {
 DbManager db = x.getDb(daoConfig);
 WhereBuilder wb = WhereBuilder.b();
 wb.and("level", "=", 2);
 List<Teacher> list = db.selector(Teacher.class).findAll();//查詢所有數(shù)據(jù)
 List<Teacher> list1 = db.selector(Teacher.class).where(wb).findAll();//查詢等級(jí)數(shù)2的教師
 }

 //刪除數(shù)據(jù)庫(kù)或表格
 @Event(value = R.id.del_db)
 private void delDBOnClick(View v) throws Exception {
 DbManager db = x.getDb(daoConfig);
 db.dropDb();//刪除數(shù)據(jù)庫(kù)
 db.dropTable(Teacher.class);//刪除teacher表格
 }


}

由于時(shí)間關(guān)系，代碼寫(xiě)得比較粗糙，后期使用中再細(xì)化。

Demo下載地址：http://xiazai.jb51.net/201611/yuanma/XutilsDemo(jb51.net).rar

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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