编舞： 跳过的帧 ： 应用程序可能在其主线程上做了太多工作

问：

在我的 android 应用程序中，我收到“应用程序可能在其主线程上做了太多工作”作为警告，并且 api 调用需要花费大量时间才能做出响应。我用一个例子展示了它。我有一个带有 2 个案例的单选按钮，每个案例将在单击时进行 api 调用，结果将向用户显示数据列表。下面是我的代码。

protected void onCreate(Bundle savedInstanceState) {
    /**   Other code **/
    rdbGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(RadioGroup radioGroup, int checkedId) {
            pos = radioGroup.indexOfChild(findViewById(checkedId));
            switch (pos) {
                case 0:
                    if (screenType == 1) {
                        getClassTeacherList();
                    } else {
                        rcyTeachers.setVisibility(View.GONE);
                    }
                    fabAddClassTeacher.setTitle("Add class teacher");
                    return;
                case 2:
                    if (screenType == 1) {
                        getAcademicTeachersList();
                    } else {
                        rcyTeachers.setVisibility(View.GONE);
                    }
                    fabAddClassTeacher.setTitle("Add Teacher");
                    return;
                default:
            }
        }
    });

private void getClassTeacherList() {
    academicPeriod = (AcademicPeriod) mSpnPeriod.getItemAtPosition(keyPos);
    if (isServerReachable(getApplicationContext())) {
        classTeacherList = serverAuthenticateService.getClassTeacherList(selClass.getId(),academicPeriod.getId(), authtoken, getApplicationContext());
        if (AppBackupCache.checkToken == 200) {
            showClassTeacherList();
        } else if (AppBackupCache.checkToken == 401) {
            manager.invalidateAuthToken("com.lss.loop", authtoken);
            authtoken = null;
            final AccountManagerFuture<Bundle> future = manager.getAuthToken(mAccount, AccountGeneral.AUTHTOKEN_TYPE_FULL_ACCESS, new Bundle(), true, null, null);
            new Thread(new Runnable() {
                public void run() {
                    try {
                        Bundle bnd = (Bundle) future.getResult();
                        authtoken = bnd.getString("authtoken");
                        if (authtoken != null) {
                            classTeacherList = serverAuthenticateService.getClassTeacherList(selClass.getId(),academicPeriod.getId(), authtoken, getApplicationContext());
                            if (AppBackupCache.checkToken == 200) {
                                showClassTeacherList();
                                return;
                            } else {
                                getMsgBox("Error", "Something went wrong");
                                return;
                            }
                        }

                        getMsgBox("", "Token not refreshed....");
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }
        AppBackupCache.checkToken = 401;
        return;
    }
    getMsgBox("No connection", "No connection");
}

public boolean isServerReachable(Context applicationContext) {
    ConnectivityManager connMan = (ConnectivityManager) applicationContext.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = connMan.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnected()) {
        try {
            URL urlServer = new URL(strUrl);
            HttpURLConnection urlConn = (HttpURLConnection) urlServer.openConnection();
            urlConn.setConnectTimeout(3000); //<- 3Seconds Timeout
            urlConn.connect();
            return urlConn.getResponseCode() == 200;
        } catch (MalformedURLException e1) {
            return false;
        } catch (IOException e) {
            return false;
        }
    }
    return false;
    //return true;
}


private void showClassTeacherList() {
    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            if (classTeacherList.size() > 0) {
                rcyTeachers.setVisibility(View.VISIBLE);
                linLayColor1.setVisibility(View.VISIBLE);
                linLaySub.setVisibility(View.GONE);
                classTeacherGridAdapter = new ClassTeacherGridAdapter(ClassTeacherActivity.this, classTeacherList, fontFamily, screenType, 1);
                rcyTeachers.setAdapter(classTeacherGridAdapter);
                ViewCompat.setNestedScrollingEnabled(rcyTeachers, true);
                return;
            }
            rcyTeachers.setVisibility(View.GONE);
            linLayColor1.setVisibility(View.GONE);
        }
    });
}

服务器身份验证服务.java ：

@Override
public List<ClassTeacher> getClassTeacherList(int classId, int academicId, String authtoken, Context applicationContext) {
    HttpHeaders headers = new HttpHeaders();
    headers.set("Authorization", "bearer " + authtoken);
    MultiValueMap<String, String> map = new LinkedMultiValueMap();
    map.add("classId", String.valueOf(classId));
    map.add("academicId", String.valueOf(academicId));
    ResponseEntity<String> restRes = this.restTemplate.exchange(apiUrl + "/getClassTeacherList", HttpMethod.POST, new HttpEntity(map, headers), String.class, new Object[0]);
    if (restRes.getStatusCode() == HttpStatus.OK) {
        AppBackupCache.checkToken = ItemTouchHelper.Callback.DEFAULT_DRAG_ANIMATION_DURATION;
        String resBody = (String) restRes.getBody();
        Type listType = new TypeToken<List<ClassTeacher>>() {}.getType();
        List<ClassTeacher> allActPgmMap = (List) this.gson.fromJson(resBody, listType);
        return allActPgmMap;
    } else if (restRes.getStatusCode() == HttpStatus.UNAUTHORIZED) {
        AppBackupCache.checkToken = 401;
        return null;
    } else {
        AppBackupCache.checkToken = 402;
        return null;
    }
}

下面是我得到的变暖。

I/Choreographer: Skipped 687 frames!  The application may be doing too much work on its main thread.
I/OpenGLRenderer: Davey! duration=11662ms; Flags=0, IntendedVsync=1315104621338, Vsync=1326554620880, OldestInputEvent=9223372036854775807, NewestInputEvent=0, HandleInputStart=1326567046366, AnimationStart=1326567174126, PerformTraversalsStart=1326567180324, DrawStart=1326747726176, SyncQueued=1326760565187, SyncStart=1326761318573, IssueDrawCommandsStart=1326761742323, SwapBuffers=1326766654823, FrameCompleted=1326767746542, DequeueBufferDuration=298000, QueueBufferDuration=332000, 

 I/Choreographer: Skipped 682 frames!  The application may be doing too much work on its main thread.
 I/OpenGLRenderer: Davey! duration=11418ms; Flags=0, IntendedVsync=1354296057548, Vsync=1365662723760, OldestInputEvent=9223372036854775807, NewestInputEvent=0, HandleInputStart=1365665791303, AnimationStart=1365665859063, PerformTraversalsStart=1365665871094, DrawStart=1365707384015, SyncQueued=1365711047505, SyncStart=1365711676880, IssueDrawCommandsStart=1365712054224, SwapBuffers=1365714258860, FrameCompleted=1365715220318, DequeueBufferDuration=243000, QueueBufferDuration=341000, 

在我的应用程序中，我有很多 API 调用，大多数时候我都会收到此警告，我应该怎么做才能避免这种情况并使我的请求和应用程序工作得更快？