所以我来这里已经四个小时了。我在同一模拟器的3台不同计算机上构建了这个项目。其他计算机可以完美运行此代码而不会出错。在与UI交互并提示Calendar.getInstance（）调用后不久，此计算机会不断发出此StackOverflowError。
这是该行运行之后在调试器中的内容。
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.coinc.coinc.coinc, PID: 3596
java.lang.StackOverflowError: stack size 8MB
at sun.util.calendar.BaseCalendar.getFixedDate(BaseCalendar.java:368)
at java.util.GregorianCalendar.getFixedDate(GregorianCalendar.java:3034)
at java.util.GregorianCalendar.computeTime(GregorianCalendar.java:2727)
at java.util.Calendar.updateTime(Calendar.java:3397)
at java.util.Calendar.getTimeInMillis(Calendar.java:1761)
at com.coinc.coinc.coinc.Functions.DaysBetweenTwoDates.getDays(DaysBetweenTwoDates.java:19)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:48)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
E/AndroidRuntime: at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
E/AndroidRuntime: at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
E/AndroidRuntime: at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
at com.coinc.coinc.coinc.DataStructures.SubActivity.<init>(SubActivity.java:15)
at com.coinc.coinc.coinc.DataStructures.Activity.<init>(Activity.java:56)
这是导致此问题的代码。仅在我的设备上对此方法的调用会产生上述错误。
public static int getDays(Time t1, Time t2)
{
Calendar cal1 = new GregorianCalendar(t1.getYear().getYear(), t1.getMonth().getMonthNumber(), t1.getDay().getDayInMonthNumber());
Calendar cal2 = new GregorianCalendar(t2.getYear().getYear(), t2.getMonth().getMonthNumber(), t2.getDay().getDayInMonthNumber());
long startLong = cal1.getTimeInMillis();
long endLong = cal2.getTimeInMillis();
long timeBetween = endLong - startLong;
// System.out.println(endLong + " - " + startLong + " = " + timeBetween + " (" + timeBetween/86400000 + " days)");
return (int)(timeBetween / 86400000);
}
这是我当前的模拟器设置：
Name: Copy_of_Copy_of_Nexus_7_API_26
CPU/ABI: Google APIs Intel Atom (x86)
Path: C:\Users\Cody\.android\avd\Copy_of_Copy_of_Nexus_7_API_26.avd
Target: google_apis [Google APIs] (API level 26)
Skin: nexus_7_2013
SD Card: 100M
hw.dPad: no
hw.lcd.height: 1920
runtime.network.speed: full
hw.accelerometer: yes
hw.device.name: Nexus 7 2013
vm.heapSize: 128
skin.dynamic: yes
hw.device.manufacturer: Google
hw.lcd.width: 1200
hw.gps: yes
hw.initialOrientation: landscape
image.androidVersion.api: 26
hw.audioInput: yes
image.sysdir.1: system-images\android-26\google_apis\x86\
tag.id: google_apis
showDeviceFrame: yes
hw.camera.back: emulated
hw.mainKeys: no
AvdId: Copy_of_Copy_of_Nexus_7_API_26
hw.camera.front: emulated
hw.lcd.density: 320
avd.ini.displayname: Copy_of_Copy_of_Nexus_7_API_26
hw.gpu.mode: auto
hw.device.hash2: MD5:1a386603f0bf133098332c61cb3a4ee2
hw.ramSize: 1536
hw.trackBall: no
PlayStore.enabled: false
fastboot.forceColdBoot: no
hw.battery: yes
hw.cpu.ncore: 4
hw.sdCard: yes
tag.display: Google APIs
runtime.network.latency: none
hw.keyboard: yes
hw.sensors.proximity: no
disk.dataPartition.size: 800M
hw.sensors.orientation: yes
avd.ini.encoding: UTF-8
hw.gpu.enabled: yes
答案 0 :(得分：0)
从堆栈跟踪中可以看到，您的SubActivity实例化了Activity，而Activity实例化了SubActivity。您需要修复此无限乒乓球。
Activity初始化的一部分是一个调用，它在调用链中深入6级（到Calendar等），最终足以溢出堆栈。