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表"凭据"确实显示在adb shell中.我检查过logcat,它似乎没有报告问题......

   private static final String DATABASE_CREATE =
        "create table credentials (_id integer primary key autoincrement, "
                + "username text not null, password text not null, "
                + "lastupdate text);"
      + "create table user (_id integer primary key autoincrement, "
                + "firstname text not null, "
                + "lastname text not null);"
      + "create table phone (_phoneid integer primary key autoincrement, "
                + "userid integer not null, phonetype text not null, "
                + "phonenumber text not null);"
      + "create table email …