成功同步我在模拟器上运行的应用程序后，我正在使用firebase数据库。在添加空活动并突然出现错误之后，strings.xml文件中出现了
mask = df['Event'].eq(1).groupby(df['ID']).transform('sum').gt(1)
g = df[mask].groupby('ID')['Event'].cumsum().replace({0:np.nan})
new2 = (df[mask].groupby(['ID', g])['Time_Stamp']
.transform('first')
.groupby(df['ID'])
.bfill())
df['Conversion_Duration'] = (new2.combine_first(new1)
.sub(min1)
.dt.total_seconds().fillna(0) / (3600 * 24))
print (df)
ID Time_Stamp Event Total_Duration_Days Conversion_Duration
0 1 2019-02-20 18:21:00 0 2.554861 1.720833
1 1 2019-02-20 19:46:00 0 2.554861 1.720833
2 1 2019-02-21 18:35:00 0 2.554861 1.720833
3 1 2019-02-22 11:39:00 1 2.554861 1.720833
4 1 2019-02-22 16:46:00 1 2.554861 1.934028
5 1 2019-02-23 07:40:00 0 2.554861 1.934028
6 2 2019-06-05 00:10:00 0 0.000000 0.000000
7 3 2019-07-31 10:18:00 0 23.260417 0.000000
8 3 2019-08-23 16:33:00 0 23.260417 0.000000
9 4 2019-06-26 20:49:00 0 0.000000 0.000000