Completely reconstructed with the MVVM structure. Optimised v3.0.

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "com.xw.project.gracefulmovies"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 56
-        versionName "3.0"
+        versionCode 57
+        versionName "3.0.0"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
@@ -70,8 +70,7 @@ android {
 }
 
 andResGuard {
-//    mappingFile = file("./resource_mapping.txt")
-    mappingFile = null
+    mappingFile = file("./resource_mapping.txt")
     use7zip = true
     useSign = true
     keepRoot = false
@@ -138,7 +137,6 @@ dependencies {
     implementation 'com.xw.repo:bubbleseekbar:3.8@aar'
     implementation 'com.github.woxingxiao:VectorCompatTextView:2.5'
     implementation 'com.github.woxingxiao:BounceScrollView:1.1'
-    implementation 'com.tencent.bugly:crashreport_upgrade:1.3.5'
     implementation('com.yarolegovich:discrete-scrollview:1.3.0') {
         exclude group: 'com.android.support'
     }

app/src/main/assets/city.json

@@ -0,0 +1 @@
+[{"id":292,"n":"上海"},{"id":366,"n":"深圳"},{"id":291,"n":"重庆"},{"id":290,"n":"北京"},{"id":365,"n":"广州"},{"id":880,"n":"成都"},{"id":974,"n":"杭州"},{"id":371,"n":"东莞"},{"id":561,"n":"武汉"},{"id":373,"n":"佛山"},{"id":791,"n":"西安"},{"id":293,"n":"天津"},{"id":628,"n":"南京"},{"id":489,"n":"郑州"},{"id":598,"n":"长沙"},{"id":295,"n":"合肥"},{"id":1001,"n":"温州"},{"id":1332,"n":"苏州"},{"id":950,"n":"昆明"},{"id":722,"n":"沈阳"},{"id":992,"n":"宁波"},{"id":453,"n":"石家庄"},{"id":662,"n":"无锡"},{"id":409,"n":"中山"},{"id":829,"n":"青岛"},{"id":649,"n":"南通"},{"id":1355,"n":"台州"},{"id":693,"n":"长春"},{"id":729,"n":"大连"},{"id":379,"n":"惠州"},{"id":528,"n":"哈尔滨"},{"id":674,"n":"南昌"},{"id":323,"n":"厦门"},{"id":328,"n":"福州"},{"id":677,"n":"赣州"},{"id":805,"n":"济南"},{"id":411,"n":"南宁"},{"id":630,"n":"常州"},{"id":664,"n":"徐州"},{"id":688,"n":"上饶"},{"id":1687,"n":"临沂"},{"id":600,"n":"常德"},{"id":338,"n":"泉州"},{"id":380,"n":"江门"},{"id":320,"n":"芜湖"},{"id":680,"n":"九江"},{"id":926,"n":"乌鲁木齐"},{"id":980,"n":"湖州"},{"id":433,"n":"贵阳"},{"id":347,"n":"兰州"},{"id":599,"n":"郴州"},{"id":420,"n":"桂林"},{"id":505,"n":"南阳"},{"id":854,"n":"太原"},{"id":843,"n":"烟台"},{"id":636,"n":"淮安"},{"id":665,"n":"盐城"},{"id":533,"n":"大庆"},{"id":450,"n":"海口"},{"id":981,"n":"嘉兴"},{"id":480,"n":"唐山"},{"id":667,"n":"扬州"},{"id":954,"n":"大理"},{"id":464,"n":"邯郸"},{"id":984,"n":"金华"},{"id":990,"n":"丽水"},{"id":904,"n":"南充"},{"id":368,"n":"珠海"},{"id":455,"n":"保定"},{"id":753,"n":"呼和浩特"},{"id":867,"n":"临汾"},{"id":517,"n":"新乡"},{"id":448,"n":"遵义"},{"id":793,"n":"宝鸡"},{"id":503,"n":"洛阳"},{"id":777,"n":"银川"},{"id":878,"n":"运城"},{"id":511,"n":"商丘"},{"id":367,"n":"汕头"},{"id":623,"n":"岳阳"},{"id":602,"n":"衡阳"},{"id":313,"n":"马鞍山"},{"id":997,"n":"绍兴"},{"id":586,"n":"襄阳"},{"id":1744,"n":"宜春"},{"id":300,"n":"滁州"},{"id":301,"n":"阜阳"},{"id":682,"n":"吉安"},{"id":575,"n":"荆州"},{"id":654,"n":"宿迁"},{"id":1763,"n":"榆林"},{"id":1745,"n":"抚州"},{"id":604,"n":"怀化"},{"id":312,"n":"六安"},{"id":901,"n":"绵阳"},{"id":506,"n":"平顶山"},{"id":839,"n":"潍坊"},{"id":803,"n":"延安"},{"id":914,"n":"宜宾"},{"id":621,"n":"益阳"},{"id":485,"n":"张家口"},{"id":407,"n":"湛江"},{"id":851,"n":"淄博"},{"id":855,"n":"长治"},{"id":994,"n":"衢州"},{"id":840,"n":"威海"},{"id":525,"n":"周口"},{"id":526,"n":"驻马店"},{"id":296,"n":"安庆"},{"id":297,"n":"蚌埠"},{"id":813,"n":"菏泽"},{"id":958,"n":"红河"},{"id":572,"n":"黄冈"},{"id":818,"n":"济宁"},{"id":964,"n":"曲靖"},{"id":657,"n":"泰州"},{"id":1003,"n":"义乌"},{"id":345,"n":"漳州"},{"id":857,"n":"大同"},{"id":886,"n":"德阳"},{"id":796,"n":"汉中"},{"id":377,"n":"河源"},{"id":497,"n":"焦作"},{"id":396,"n":"韶关"},{"id":618,"n":"湘潭"},{"id":801,"n":"咸阳"},{"id":408,"n":"肇庆"},{"id":625,"n":"株洲"},{"id":759,"n":"鄂尔多斯"},{"id":381,"n":"揭阳"},{"id":645,"n":"昆山"},{"id":470,"n":"廊坊"},{"id":646,"n":"连云港"},{"id":425,"n":"柳州"},{"id":617,"n":"邵阳"},{"id":581,"n":"十堰"},{"id":515,"n":"信阳"},{"id":670,"n":"张家港"},{"id":756,"n":"包头"},{"id":458,"n":"沧州"},{"id":390,"n":"梅州"},{"id":507,"n":"濮阳"},{"id":589,"n":"孝感"},{"id":785,"n":"西宁"},{"id":671,"n":"镇江"},{"id":758,"n":"赤峰"},{"id":808,"n":"德州"},{"id":641,"n":"江阴"},{"id":703,"n":"吉林市"},{"id":574,"n":"荆门"},{"id":866,"n":"晋中"},{"id":898,"n":"乐山"},{"id":339,"n":"三明"},{"id":800,"n":"渭南"},{"id":403,"n":"阳江"},{"id":590,"n":"宜昌"},{"id":622,"n":"永州"},{"id":499,"n":"开封"},{"id":837,"n":"泰安"},{"id":431,"n":"玉林"},{"id":792,"n":"安康"},{"id":724,"n":"鞍山"},{"id":412,"n":"百色"},{"id":629,"n":"常熟"},{"id":953,"n":"楚雄"},{"id":809,"n":"东营"},{"id":305,"n":"黄山"},{"id":1345,"n":"锦州"},{"id":823,"n":"聊城"},{"id":869,"n":"吕梁"},{"id":389,"n":"茂名"},{"id":337,"n":"莆田"},{"id":833,"n":"日照"},{"id":451,"n":"三亚"},{"id":318,"n":"宿州"},{"id":587,"n":"咸宁"},{"id":873,"n":"忻州"},{"id":971,"n":"玉溪"},{"id":459,"n":"承德"},{"id":567,"n":"恩施"},{"id":960,"n":"临沧"},{"id":612,"n":"浏阳"},{"id":333,"n":"龙岩"},{"id":900,"n":"泸州"},{"id":903,"n":"眉山"},{"id":394,"n":"清远"},{"id":910,"n":"遂宁"},{"id":767,"n":"通辽"},{"id":445,"n":"铜仁"},{"id":482,"n":"邢台"},{"id":321,"n":"宣城"},{"id":750,"n":"营口"},{"id":847,"n":"枣庄"},{"id":1006,"n":"舟山"},{"id":434,"n":"安顺"},{"id":490,"n":"安阳"},{"id":1342,"n":"滨州"},{"id":885,"n":"达州"},{"id":893,"n":"广元"},{"id":764,"n":"呼伦贝尔"},{"id":540,"n":"佳木斯"},{"id":354,"n":"酒泉"},{"id":613,"n":"娄底"},{"id":502,"n":"漯河"},{"id":442,"n":"黔南州"},{"id":435,"n":"毕节"},{"id":302,"n":"亳州"},{"id":423,"n":"河池"},{"id":466,"n":"衡水"},{"id":573,"n":"黄石"},{"id":544,"n":"牡丹江"},{"id":335,"n":"南平"},{"id":905,"n":"内江"},{"id":358,"n":"平凉"},{"id":446,"n":"黔东南"},{"id":475,"n":"秦皇岛"},{"id":547,"n":"齐齐哈尔"},{"id":798,"n":"商洛"},{"id":553,"n":"绥化"},{"id":1000,"n":"温岭"},{"id":968,"n":"文山"},{"id":619,"n":"湘西"},{"id":936,"n":"伊犁"},{"id":915,"n":"自贡"},{"id":757,"n":"巴彦淖尔"},{"id":304,"n":"淮南"},{"id":739,"n":"葫芦岛"},{"id":642,"n":"靖江"},{"id":336,"n":"宁德"},{"id":1349,"n":"萍乡"},{"id":395,"n":"汕尾"},{"id":713,"n":"四平"},{"id":360,"n":"天水"},{"id":716,"n":"通化"},{"id":769,"n":"乌兰察布"},{"id":689,"n":"新余"},{"id":1007,"n":"诸暨"},{"id":952,"n":"保山"},{"id":413,"n":"北海"},{"id":350,"n":"定西"},{"id":735,"n":"抚顺"},{"id":865,"n":"晋城"},{"id":744,"n":"盘锦"},{"id":906,"n":"攀枝花"},{"id":652,"n":"启东"},{"id":359,"n":"庆阳"},{"id":428,"n":"梧州"},{"id":588,"n":"仙桃"},{"id":349,"n":"白银"},{"id":882,"n":"巴中"},{"id":727,"n":"本溪"},{"id":975,"n":"慈溪"},{"id":889,"n":"甘孜"},{"id":331,"n":"晋江"},{"id":440,"n":"六盘水"},{"id":355,"n":"陇南"},{"id":441,"n":"黔西南州"},{"id":714,"n":"松原"},{"id":770,"n":"乌兰浩特"},{"id":520,"n":"许昌"},{"id":913,"n":"雅安"},{"id":874,"n":"阳泉"},{"id":668,"n":"宜兴"},{"id":405,"n":"云浮"},{"id":1005,"n":"余姚"},{"id":695,"n":"白山"},{"id":728,"n":"朝阳"},{"id":369,"n":"潮州"},{"id":736,"n":"阜新"},{"id":357,"n":"甘南"},{"id":891,"n":"广安"},{"id":979,"n":"海宁"},{"id":706,"n":"辽源"},{"id":356,"n":"临夏"},{"id":579,"n":"潜江"},{"id":426,"n":"钦州"},{"id":551,"n":"双鸭山"},{"id":943,"n":"塔城"},{"id":999,"n":"桐乡"},{"id":881,"n":"阿坝"},{"id":927,"n":"阿克苏"},{"id":932,"n":"昌吉"},{"id":299,"n":"池州"},{"id":416,"n":"崇左"},{"id":730,"n":"丹东"},{"id":632,"n":"丹阳"},{"id":955,"n":"德宏"},{"id":418,"n":"防城港"},{"id":327,"n":"福清"},{"id":635,"n":"海门"},{"id":303,"n":"淮北"},{"id":741,"n":"辽阳"},{"id":653,"n":"如皋"},{"id":477,"n":"三河"},{"id":510,"n":"三门峡"},{"id":871,"n":"朔州"},{"id":317,"n":"铜陵"},{"id":660,"n":"吴江"},{"id":718,"n":"延边"},{"id":916,"n":"资阳"},{"id":976,"n":"东阳"},{"id":698,"n":"敦化"},{"id":681,"n":"景德镇"},{"id":938,"n":"喀什"},{"id":424,"n":"来宾"},{"id":988,"n":"临海"},{"id":766,"n":"满洲里"},{"id":5064,"n":"普洱"},{"id":995,"n":"瑞安"},{"id":781,"n":"石嘴山"},{"id":836,"n":"寿光"},{"id":966,"n":"思茅"},{"id":583,"n":"随州"},{"id":746,"n":"铁岭"},{"id":624,"n":"张家界"},{"id":972,"n":"昭通"},{"id":568,"n":"鄂州"},{"id":1764,"n":"海东"},{"id":934,"n":"哈密"},{"id":495,"n":"鹤壁"},{"id":817,"n":"即墨"},{"id":987,"n":"乐清"},{"id":942,"n":"石河子"},{"id":655,"n":"太仓"},{"id":656,"n":"泰兴"},{"id":361,"n":"武威"},{"id":771,"n":"锡林郭勒"},{"id":969,"n":"西双版纳"},{"id":690,"n":"鹰潭"},{"id":1004,"n":"永康"},{"id":694,"n":"白城"},{"id":324,"n":"长乐"},{"id":699,"n":"公主岭"},{"id":419,"n":"贵港"},{"id":422,"n":"贺州"},{"id":352,"n":"嘉峪关"},{"id":498,"n":"济源"},{"id":644,"n":"句容"},{"id":439,"n":"凯里"},{"id":820,"n":"莱芜"},{"id":918,"n":"拉萨"},{"id":899,"n":"凉山"},{"id":961,"n":"丽江"},{"id":647,"n":"溧阳"},{"id":998,"n":"嵊州"},{"id":5051,"n":"时光市"},{"id":799,"n":"铜川"},{"id":768,"n":"乌海"},{"id":447,"n":"兴义"},{"id":948,"n":"伊宁"},{"id":754,"n":"阿拉善"},{"id":884,"n":"崇州"},{"id":534,"n":"大兴安岭"},{"id":460,"n":"定州"},{"id":676,"n":"丰城"},{"id":978,"n":"富阳"},{"id":634,"n":"高邮"},{"id":569,"n":"广水"},{"id":679,"n":"贵溪"},{"id":4914,"n":"海盐"},{"id":536,"n":"鹤岗"},{"id":571,"n":"洪湖"},{"id":378,"n":"化州"},{"id":702,"n":"珲春"},{"id":639,"n":"江都"},{"id":895,"n":"江油"},{"id":353,"n":"金昌"},{"id":937,"n":"克拉玛依"},{"id":939,"n":"库尔勒"},{"id":821,"n":"莱阳"},{"id":385,"n":"廉江"},{"id":989,"n":"临安"},{"id":334,"n":"南安"},{"id":651,"n":"邳州"},{"id":830,"n":"青州"},{"id":1748,"n":"琼海"},{"id":996,"n":"上虞"},{"id":838,"n":"滕州"},{"id":584,"n":"天门"},{"id":946,"n":"五家渠"},{"id":782,"n":"吴忠"},{"id":514,"n":"项城"},{"id":772,"n":"锡林浩特"},{"id":663,"n":"兴化"},{"id":970,"n":"宣威"},{"id":666,"n":"扬中"},{"id":558,"n":"伊春"},{"id":669,"n":"仪征"},{"id":691,"n":"樟树"},{"id":486,"n":"涿州"},{"id":929,"n":"阿勒泰"},{"id":530,"n":"安达"},{"id":1774,"n":"巴音郭楞"},{"id":414,"n":"北流"},{"id":807,"n":"昌邑"},{"id":298,"n":"巢湖"},{"id":563,"n":"赤壁"},{"id":370,"n":"从化"},{"id":631,"n":"大丰"},{"id":564,"n":"丹江口"},{"id":1749,"n":"儋州市"},{"id":786,"n":"德令哈"},{"id":1752,"n":"东方"},{"id":888,"n":"峨眉山"},{"id":977,"n":"奉化"},{"id":325,"n":"福安"},{"id":737,"n":"盖州"},{"id":678,"n":"高安"},{"id":859,"n":"高平"},{"id":375,"n":"高州"},{"id":1344,"n":"海安"},{"id":537,"n":"黑河"},{"id":376,"n":"鹤山"},{"id":862,"n":"侯马"},{"id":701,"n":"桦甸"},{"id":982,"n":"建德"},{"id":643,"n":"金坛"},{"id":541,"n":"鸡西"},{"id":1759,"n":"乐东"},{"id":607,"n":"耒阳"},{"id":684,"n":"乐平"},{"id":577,"n":"利川"},{"id":610,"n":"醴陵"},{"id":826,"n":"龙口"},{"id":578,"n":"麻城"},{"id":4966,"n":"芒市"},{"id":709,"n":"梅河口"},{"id":504,"n":"孟州"},{"id":963,"n":"怒江"},{"id":710,"n":"磐石"},{"id":827,"n":"蓬莱"},{"id":993,"n":"平湖"},{"id":474,"n":"迁安"},{"id":548,"n":"七台河"},{"id":686,"n":"瑞昌"},{"id":478,"n":"沙河"},{"id":340,"n":"邵武"},{"id":341,"n":"石狮"},{"id":711,"n":"双辽"},{"id":945,"n":"吐鲁番"},{"id":747,"n":"瓦房店"},{"id":1750,"n":"文昌"},{"id":620,"n":"湘乡"},{"id":872,"n":"孝义"},{"id":912,"n":"西昌"},{"id":518,"n":"新郑"},{"id":719,"n":"延吉"},{"id":848,"n":"章丘"},{"id":363,"n":"张掖"},{"id":783,"n":"中卫"},{"id":928,"n":"阿拉尔"},{"id":456,"n":"霸州"},{"id":531,"n":"北安"},{"id":1773,"n":"博尔塔拉"},{"id":931,"n":"博乐"},{"id":457,"n":"泊头"},{"id":491,"n":"长葛"},{"id":1755,"n":"澄迈县"},{"id":566,"n":"当阳"},{"id":731,"n":"大石桥"},{"id":697,"n":"德惠"},{"id":733,"n":"调兵山"},{"id":956,"n":"迪庆"},{"id":734,"n":"东港"},{"id":633,"n":"东台"},{"id":417,"n":"东兴"},{"id":887,"n":"都江堰"},{"id":810,"n":"肥城"},{"id":858,"n":"汾阳"},{"id":462,"n":"高碑店"},{"id":811,"n":"高密"},{"id":787,"n":"格尔木"},{"id":494,"n":"巩义"},{"id":778,"n":"固原"},{"id":738,"n":"海城"},{"id":1769,"n":"海南藏族自治州"},{"id":861,"n":"河津"},{"id":496,"n":"辉县"},{"id":640,"n":"姜堰"},{"id":1353,"n":"简阳"},{"id":704,"n":"蛟河"},{"id":816,"n":"胶州"},{"id":864,"n":"介休"},{"id":740,"n":"开原"},{"id":1775,"n":"克孜勒"},{"id":822,"n":"莱州"},{"id":897,"n":"阆中"},{"id":986,"n":"兰溪"},{"id":576,"n":"老河口"},{"id":608,"n":"冷水江"},{"id":609,"n":"涟源"},{"id":824,"n":"临清"},{"id":902,"n":"绵竹"},{"id":614,"n":"汨罗"},{"id":828,"n":"平度"},{"id":745,"n":"普兰店"},{"id":831,"n":"栖霞"},{"id":832,"n":"曲阜"},{"id":476,"n":"任丘"},{"id":834,"n":"荣成"},{"id":687,"n":"瑞金"},{"id":549,"n":"尚志"},{"id":4954,"n":"射阳"},{"id":550,"n":"双城"},{"id":648,"n":"沭阳"},{"id":582,"n":"松滋"},{"id":715,"n":"洮南"},{"id":316,"n":"桐城"},{"id":1754,"n":"屯昌县"},{"id":481,"n":"武安"},{"id":399,"n":"吴川"},{"id":773,"n":"兴安"},{"id":484,"n":"新乐"},{"id":401,"n":"信宜"},{"id":844,"n":"兖州"},{"id":592,"n":"宜都"},{"id":404,"n":"英德"},{"id":430,"n":"宜州"},{"id":343,"n":"永安"},{"id":524,"n":"禹州"},{"id":595,"n":"枝江"},{"id":751,"n":"庄河"},{"id":852,"n":"邹城"},{"id":487,"n":"遵化"},{"id":1757,"n":"白沙"},{"id":415,"n":"岑溪"},{"id":920,"n":"昌都"},{"id":1758,"n":"昌江"},{"id":601,"n":"常宁"},{"id":565,"n":"大冶"},{"id":732,"n":"灯塔"},{"id":493,"n":"邓州"},{"id":675,"n":"德兴"},{"id":1753,"n":"定安县"},{"id":761,"n":"二连浩特"},{"id":372,"n":"恩平"},{"id":326,"n":"福鼎"},{"id":892,"n":"广汉"},{"id":1766,"n":"海北"},{"id":465,"n":"河间"},{"id":797,"n":"华阴"},{"id":894,"n":"华蓥"},{"id":539,"n":"虎林"},{"id":863,"n":"霍州"},{"id":311,"n":"界首"},{"id":683,"n":"井冈山"},{"id":606,"n":"吉首"},{"id":819,"n":"莱西"},{"id":1760,"n":"陵水"},{"id":743,"n":"凌源"},{"id":611,"n":"临湘"},{"id":924,"n":"林芝"},{"id":500,"n":"林州"},{"id":332,"n":"龙海"},{"id":708,"n":"龙井"},{"id":868,"n":"潞城"},{"id":387,"n":"陆丰"},{"id":543,"n":"密山"},{"id":391,"n":"南雄"},{"id":545,"n":"讷河"},{"id":5009,"n":"彭州市"},{"id":444,"n":"仁怀"},{"id":965,"n":"瑞丽"},{"id":835,"n":"乳山"},{"id":509,"n":"汝州"},{"id":921,"n":"山南"},{"id":1746,"n":"神农架"},{"id":909,"n":"什邡"},{"id":712,"n":"舒兰"},{"id":397,"n":"四会"},{"id":554,"n":"铁力"},{"id":717,"n":"图门"},{"id":1751,"n":"万宁"},{"id":512,"n":"卫辉"},{"id":556,"n":"五常"},{"id":557,"n":"五大连池"},{"id":342,"n":"武夷山"},{"id":749,"n":"兴城"},{"id":400,"n":"兴宁"},{"id":483,"n":"辛集"},{"id":516,"n":"新密"},{"id":5005,"n":"洋浦市"},{"id":593,"n":"应城"},{"id":523,"n":"永城"},{"id":1771,"n":"玉树"},{"id":344,"n":"漳平"},{"id":849,"n":"招远"},{"id":850,"n":"诸城"}]

app/src/main/java/com/xw/project/gracefulmovies/broadcast/NetworkStateChangedReceiver.java

@@ -0,0 +1,18 @@
+package com.xw.project.gracefulmovies.broadcast;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.widget.Toast;
+
+import com.xw.project.gracefulmovies.util.NetWorkUtils;
+
+public class NetworkStateChangedReceiver extends BroadcastReceiver {
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (!NetWorkUtils.isNetworkAvailable()) {
+            Toast.makeText(context, "网络连接已断开，请检查网络", Toast.LENGTH_SHORT).show();
+        }
+    }
+}

app/src/main/java/com/xw/project/gracefulmovies/data/ApiResponse.java

@@ -0,0 +1,106 @@
+package com.xw.project.gracefulmovies.data;
+
+import android.arch.lifecycle.LiveData;
+import android.arch.lifecycle.MutableLiveData;
+
+import com.xw.project.gracefulmovies.data.api.ApiException;
+import com.xw.project.gracefulmovies.data.api.ApiObserver;
+import com.xw.project.gracefulmovies.data.ao.bridge.ModelBridge;
+import com.xw.project.gracefulmovies.rx.RxSchedulers;
+
+import java.util.List;
+
+import io.reactivex.Observable;
+
+/**
+ * <p>
+ * Created by woxingxiao on 2018-08-22.
+ */
+public class ApiResponse<T> {
+
+    private final MutableLiveData<ApiResponse<T>> mLiveData = new MutableLiveData<>();
+
+    private T data;
+    private Exception exception;
+
+    public ApiResponse() {
+    }
+
+    ApiResponse(T data, Exception exception) {
+        this.data = data;
+        this.exception = exception;
+    }
+
+    public T getData() {
+        return data;
+    }
+
+    public Exception getException() {
+        return exception;
+    }
+
+    public LiveData<ApiResponse<T>> map(Observable<ModelBridge<T>> observable) {
+        observable
+                .map(bridge -> {
+                    if (bridge == null) {
+                        throw new ApiException(ApiException.CODE_FAILED, "获取数据失败");
+                    } else if (bridge.data == null || (bridge.data instanceof List && ((List) bridge.data).isEmpty())) {
+                        throw new ApiException(ApiException.CODE_EMPTY, "暂无数据");
+                    }
+
+                    return bridge.data;
+                })
+                .compose(RxSchedulers.applyIO())
+                .subscribe(new ApiObserver<T>() {
+                    @Override
+                    public void onNext(T t) {
+                        ApiResponseSuccess<T> success = create(t);
+                        mLiveData.postValue(success);
+                    }
+
+                    @Override
+                    protected void onErrorResolved(Throwable e, String msg) {
+                        if (e instanceof ApiException && ((ApiException) e).getCode() == ApiException.CODE_EMPTY) {
+                            ApiResponseEmpty<T> empty = create();
+                            mLiveData.postValue(empty);
+                        } else {
+                            ApiResponseError<T> error = create(new Exception(msg, e));
+                            mLiveData.postValue(error);
+                        }
+                    }
+                });
+
+        return mLiveData;
+    }
+
+    private ApiResponseSuccess<T> create(T data) {
+        return new ApiResponseSuccess<>(data, null);
+    }
+
+    private ApiResponseError<T> create(Exception e) {
+        return new ApiResponseError<>(null, e);
+    }
+
+    private ApiResponseEmpty<T> create() {
+        return new ApiResponseEmpty<>(null, null);
+    }
+
+    ////////////////////////////////////////////////////////////////////////////////////////////////
+    public static class ApiResponseSuccess<T> extends ApiResponse<T> {
+        ApiResponseSuccess(T data, Exception e) {
+            super(data, e);
+        }
+    }
+
+    public static class ApiResponseError<T> extends ApiResponse<T> {
+        ApiResponseError(T data, Exception e) {
+            super(data, e);
+        }
+    }
+
+    public static class ApiResponseEmpty<T> extends ApiResponse<T> {
+        ApiResponseEmpty(T data, Exception e) {
+            super(data, e);
+        }
+    }
+}