驾考添加日志打印到文件； TrainFragment默认给arcgis url赋值，后面arcgis map用到的url的是mmpk文件

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2021-03-15 95b1eabebe92ebc69f506f3599a5090604e440bb

 app/src/main/java/safeluck/drive/evaluation/viewmodels/MainViewModel.java

@@ -22,7 +22,6 @@
    }

    private void  loadJson() {
        MyLog.i("loadJson");
        new Thread(new Runnable() {
            @Override
            public void run() {