我在Android项目中使用gson + rxjava2 + retrofit2。我遇到以下错误：
java.lang.IllegalArgumentException: Unable to create converter for
tv.mchang.data.api.Result<tv.mchang.data.api.bean.main.ColumnInfo>
当前仅在Android4.4 HISIV510中。 这个问题是什么原因造成的？ 如何解决这个问题呢？ 请帮忙。
//Error message
java.lang.IllegalArgumentException: Unable to create converter for tv.mchang.data.api.Result<tv.mchang.data.api.bean.main.ColumnInfo>
for method IMainService.getColumnInfo
at retrofit2.ServiceMethod$Builder.methodError(ServiceMethod.java:755)
at retrofit2.ServiceMethod$Builder.createResponseConverter(ServiceMethod.java:741)
at retrofit2.ServiceMethod$Builder.build(ServiceMethod.java:172)
at retrofit2.Retrofit.loadServiceMethod(Retrofit.java:170)
at retrofit2.Retrofit$1.invoke(Retrofit.java:147)
at $Proxy0.getColumnInfo(Native Method)
at tv.mchang.data.api.main.MainAPI.getColumnInfo(MainAPI.java:225)
at tv.mchang.data.repository.ApiResRepo.getMainColumn(ApiResRepo.java:41)
at tv.mchang.main.fragment.BaseFragment.loadData(BaseFragment.java:447)
at tv.mchang.main.fragment.BaseFragment.onActivityCreated(BaseFragment.java:144)
at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:2270)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1442)
at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1750)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1819)
at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:797)
at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2590)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2377)
at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2332)
at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:2209)
at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:649)
at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:167)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1238)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1086)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1616)
at android.view.View.measure(View.java:16497)
at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1210)
at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:1550)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2312)
at android.view.View.measure(View.java:16497)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1917)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1114)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1296)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1001)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5719)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
at android.view.Choreographer.doCallbacks(Choreographer.java:574)
at android.view.Choreographer.doFrame(Choreographer.java:544)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5039)
at java.lang.reflect.Method.invokeNative(Native M
//端点声明
@GET("upgrade/homepage/all/{channelId}/{type}")
Observable<Result<ColumnInfo>> getColumnInfo(@Path("channelId") String channelId,@Path("type") int type);
//客户端类
@Provides
@Singleton
RxJava2CallAdapterFactory provideCallAdapterFactory() {
return RxJava2CallAdapterFactory.create();
}
@Provides
@Singleton
GsonConverterFactory provideConverterFactory(Gson gson) {
return GsonConverterFactory.create(gson);
}
@Provides
@Singleton
Retrofit provideRetrofit(@Named("tv_base_url") String baseUrl, OkHttpClient client,RxJava2CallAdapterFactory callAdapterFactory, GsonConverterFactory converterFactory) {
return new Retrofit.Builder()
.baseUrl(baseUrl)
.addCallAdapterFactory(callAdapterFactory)
.addConverterFactory(converterFactory)
.build();
}
二手货：
public Observable<ColumnInfo> getColumnInfo(int type) {
return mService.getColumnInfo(channelId, type)
.map(new Function<Result<ColumnInfo>, ColumnInfo>() {
@Override
public ColumnInfo apply(Result<ColumnInfo> columnInfoResult) throws Exception {
// Logger.i("columnInfoResult:"+columnInfoResult.toString());
return columnInfoResult.getContent();
}
})
.subscribeOn(mScheduler);
}
课程结果：
public class Result<T> {
private String result;
private T content;
public String getResult() {
return result;
}
public void setResult(String result) {
this.result = result;
}
public T getContent() {
return content;
}
public void setContent(T content) {
this.content = content;
}
@Override public String toString() {
return "Result{" +
"result='" + result + '\'' +
", content=" + content +
'}';
}
}
这是ColumnInfo：
@SerializedName("moduleInfos")
List<ColumnItemInfo> mColumnItemInfos; // 栏目下拉条目列表
public List<ColumnItemInfo> getColumnItemInfos() {
return mColumnItemInfos;
}
public void setColumnItemInfos(List<ColumnItemInfo> columnItemInfos) {
mColumnItemInfos = columnItemInfos;
}
@Override
public String toString() {
return "ColumnInfo{" +
"mColumnItemInfos=" + mColumnItemInfos +
'}';
}
和ColumnItemInfo：
@SerializedName("moduleDetailInfos")
List<ColumnBoxInfo> mColumnBoxInfos;
@SerializedName("formId")
int layoutId; // 布局样式
String name; // 条目标题
public List<ColumnBoxInfo> getColumnBoxInfos() {
return mColumnBoxInfos;
}
public void setColumnBoxInfos(List<ColumnBoxInfo> columnBoxInfos) {
mColumnBoxInfos = columnBoxInfos;
}
public int getLayoutId() {
return layoutId;
}
public void setLayoutId(int layoutId) {
this.layoutId = layoutId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "ColumnItemInfo{" +
"mColumnBoxInfos=" + mColumnBoxInfos +
", layoutId=" + layoutId +
", name='" + name + '\'' +
'}';
}
和ColumnBoxInfo：
int contentType;
long contentId;
String coverPath;
@SerializedName("videoPlayInfo")
VideoInfo videoInfo;
@SerializedName("h5ActUrl")
String h5Url;
String name;
String previewUrl;
@SerializedName("onClick")
int clickEvent;
String userId;
String locationId;
String moduleId;
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getModuleId() {
return moduleId;
}
public void setModuleId(String moduleId) {
this.moduleId = moduleId;
}
public String getLocationId() {
return locationId;
}
public void setLocationId(String locationId) {
this.locationId = locationId;
}
public int getClickEvent() {
return clickEvent;
}
public void setClickEvent(int clickEvent) {
this.clickEvent = clickEvent;
}
public String getPreviewUrl() {
return previewUrl;
}
public void setPreviewUrl(String previewUrl) {
this.previewUrl = previewUrl;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getH5Url() {
return h5Url;
}
public void setH5Url(String h5Url) {
this.h5Url = h5Url;
}
public int getContentType() {
return contentType;
}
public void setContentType(int contentType) {
this.contentType = contentType;
}
public long getContentId() {
return contentId;
}
public void setContentId(long contentId) {
this.contentId = contentId;
}
public String getCoverPath() {
return coverPath;
}
public void setCoverPath(String coverPath) {
this.coverPath = coverPath;
}
public VideoInfo getVideoInfo() {
return videoInfo;
}
public void setVideoInfo(VideoInfo videoInfo) {
this.videoInfo = videoInfo;
}
@Override
public String toString() {
return "ColumnBoxInfo{" +
"contentType=" + contentType +
", contentId=" + contentId +
", coverPath='" + coverPath + '\'' +
", videoInfo=" + videoInfo +
", h5Url='" + h5Url + '\'' +
", name='" + name + '\'' +
", previewUrl='" + previewUrl + '\'' +
", clickEvent=" + clickEvent +
'}';
}
// gradle依赖rxjava并使用compileSdk26进行改造
api "com.google.code.gson:gson:2.8.2"
api "com.squareup.okhttp3:okhttp:3.10.0"
// retrofit2
api "com.squareup.retrofit2:retrofit:2.4.0"
api "com.squareup.retrofit2:converter-gson:2.4.0"
api "com.squareup.retrofit2:adapter-rxjava2:2.4.0"
// RxJava
api "io.reactivex.rxjava2:rxjava:2.1.9"
api "io.reactivex.rxjava2:rxandroid:2.0.2"
JSON：
{
"content": {
"moduleInfos": [
{
"moduleDetailInfos": [
{
"onClick": "17",
"moduleId": "3",
"locationId": "1",
"coverPath": "156099617565408db16789d6347c2af.jpg",
"contentType": "12",
"contentId": "182",
"previewUrl": "ST_DSSN_20190620"
},
{
"onClick": "18",
"moduleId": "3",
"locationId": "2",
"coverPath": "15560923280430c6255995fd54f3080.png",
"contentType": "12",
"contentId": "173",
"previewUrl": "ST_XBNZ_20190424"
},
{
"onClick": "19",
"moduleId": "3",
"name": "00后",
"locationId": "3",
"coverPath": "1560928273336a80f74a13dd848d3bd.png",
"contentType": "3",
"contentId": "174",
"previewUrl": "ST_WYF_20190428"
},
{
"onClick": "20",
"moduleId": "3",
"name": "90后",
"locationId": "4",
"coverPath": "156092828996050fe36f0ebd84fb4ba.png",
"contentType": "3",
"contentId": "175",
"previewUrl": ""
},
{
"onClick": "21",
"moduleId": "3",
"name": "80后",
"locationId": "5",
"coverPath": "15609283009055d80d99c39a44983b0.png",
"contentType": "3",
"contentId": "176",
"previewUrl": ""
}
],
"formId": "1",
"name": ""
},
{
"moduleDetailInfos": [
{
"moduleId": "27",
"name": "陈粒",
"locationId": "6",
"coverPath": "1548925880633bbf4ef8113744af3a8.jpg",
"contentType": "3",
"contentId": "170",
"previewUrl": ""
},
{
"moduleId": "27",
"name": "田馥甄",
"locationId": "7",
"coverPath": "15239552809853057f1d713e0469fb2.jpg",
"contentType": "3",
"contentId": "68",
"previewUrl": ""
},
{
"moduleId": "27",
"name": "蔡依林",
"locationId": "8",
"coverPath": "15239552956229f18f7ce57994bec96.jpg",
"contentType": "3",
"contentId": "69",
"previewUrl": ""
},
{
"moduleId": "27",
"name": "鹿晗",
"locationId": "9",
"coverPath": "154892709864369daf9b880374aa8a1.jpg",
"contentType": "3",
"contentId": "171",
"previewUrl": ""
},
{
"moduleId": "27",
"name": "张杰",
"locationId": "10",
"coverPath": "152395532304126d00879315f42d2b2.jpg",
"contentType": "3",
"contentId": "71",
"previewUrl": ""
},
{
"moduleId": "27",
"name": "李荣浩",
"locationId": "11",
"coverPath": "15239553458759b5d6175081b4afbb0.jpg",
"contentType": "3",
"contentId": "72",
"previewUrl": ""
},
{
"moduleId": "27",
"name": "乌兰图雅",
"locationId": "12",
"coverPath": "1548927263159e7e2a9e5971e4d5c83.jpg",
"contentType": "3",
"contentId": "169",
"previewUrl": ""
},
{
"moduleId": "27",
"locationId": "13",
"contentType": "7",
"videoPlayInfo": {}
},
{
"moduleId": "27",
"locationId": "14",
"contentType": "7",
"videoPlayInfo": {}
},
{
"moduleId": "27",
"locationId": "15",
"contentType": "7",
"videoPlayInfo": {}
}
],
"formId": "2",
"name": "音乐人"
}
]
},
"result": "ok"
}