烦人的Android SDK API报错
逄征
编译Android系统的时候经常会出现Check API报错的情况，特别烦人，接下来教大家如何彻底解决这个烦恼。
目录
4.3.1. update-alternatives命令方式配置JDK版本
1. 典型的SDK API报错日志
先贴一段编译报错，如果你的错误类似，可以继续阅读后面的文字
Checking API: checkpublicapi-last
Checking API: checkpublicapi-current
Checking API: checksystemapi-last
Checking API: checksystemapi-current
target Static Jar: android-support-v13 (out/target/common/obj/JAVA_LIBRARIES/android-support-v13_intermediates/javalib.jar)
target Java: android-ex-camera2-utils (out/target/common/obj/JAVA_LIBRARIES/android-ex-camera2-utils_intermediates/classes)
target Java: glide (out/target/common/obj/JAVA_LIBRARIES/glide_intermediates/classes)
target Java: DocumentsUI (out/target/common/obj/APPS/DocumentsUI_intermediates/classes)
target Java: LatinIME (out/target/common/obj/APPS/LatinIME_intermediates/classes)
prebuilts/sdk/api/22.txt:8: error 9: Removed public constructor Manifest.permission()
prebuilts/sdk/api/22.txt:164: error 9: Removed public constructor Manifest.permission_group()
prebuilts/sdk/api/22.txt:203: error 9: Removed public constructor R.anim()
prebuilts/sdk/api/22.txt:220: error 9: Removed public constructor R.animator()
prebuilts/sdk/api/22.txt:226: error 9: Removed public constructor R.array()
prebuilts/sdk/api/22.txt:235: error 9: Removed public constructor R.attr()
prebuilts/sdk/api/22.txt:1442: error 9: Removed public constructor R.bool()
prebuilts/sdk/api/22.txt:1446: error 9: Removed public constructor R.color()
prebuilts/sdk/api/22.txt:1478: error 9: Removed public constructor R.dimen()
prebuilts/sdk/api/22.txt:1489: error 9: Removed public constructor R.drawable()
prebuilts/sdk/api/22.txt:1667: error 9: Removed public constructor R.fraction()
prebuilts/sdk/api/22.txt:1671: error 9: Removed public constructor R.id()
prebuilts/sdk/api/22.txt:1724: error 9: Removed public constructor R.integer()
prebuilts/sdk/api/22.txt:1732: error 9: Removed public constructor R.interpolator()
prebuilts/sdk/api/22.txt:1752: error 9: Removed public constructor R.layout()
prebuilts/sdk/api/22.txt:1780: error 9: Removed public constructor R.menu()
prebuilts/sdk/api/22.txt:1784: error 9: Removed public constructor R.mipmap()
prebuilts/sdk/api/22.txt:1789: error 9: Removed public constructor R.plurals()
prebuilts/sdk/api/22.txt:1793: error 9: Removed public constructor R.raw()
prebuilts/sdk/api/22.txt:1797: error 9: Removed public constructor R.string()
prebuilts/sdk/api/22.txt:1825: error 9: Removed public constructor R.style()
prebuilts/sdk/api/22.txt:2548: error 9: Removed public constructor R.transition()
prebuilts/sdk/api/22.txt:2560: error 9: Removed public constructor R.xml()
prebuilts/sdk/api/22.txt:3228: error 9: Removed public constructor ActionBar.LayoutParams(Context,AttributeSet)
prebuilts/sdk/api/22.txt:3229: error 9: Removed public constructor ActionBar.LayoutParams(int,int)
prebuilts/sdk/api/22.txt:3230: error 9: Removed public constructor ActionBar.LayoutParams(int,int,int)
prebuilts/sdk/api/22.txt:3231: error 9: Removed public constructor ActionBar.LayoutParams(int)
prebuilts/sdk/api/22.txt:3232: error 9: Removed public constructor ActionBar.LayoutParams(LayoutParams)
prebuilts/sdk/api/22.txt:3233: error 9: Removed public constructor ActionBar.LayoutParams(LayoutParams)
prebuilts/sdk/api/22.txt:3246: error 9: Removed public constructor ActionBar.Tab()
prebuilts/sdk/api/22.txt:3539: error 9: Removed public constructor ActivityManager.MemoryInfo()
prebuilts/sdk/api/22.txt:3551: error 9: Removed public constructor ActivityManager.ProcessErrorStateInfo()
prebuilts/sdk/api/22.txt:3571: error 9: Removed public constructor ActivityManager.RecentTaskInfo()
prebuilts/sdk/api/22.txt:3586: error 9: Removed public constructor ActivityManager.RunningAppProcessInfo()
prebuilts/sdk/api/22.txt:3587: error 9: Removed public constructor ActivityManager.RunningAppProcessInfo(String,int,String)
prebuilts/sdk/api/22.txt:3615: error 9: Removed public constructor ActivityManager.RunningServiceInfo()
prebuilts/sdk/api/22.txt:3641: error 9: Removed public constructor ActivityManager.RunningTaskInfo()
prebuilts/sdk/api/22.txt:3656: error 9: Removed public constructor ActivityManager.TaskDescription(String,Bitmap,int)
prebuilts/sdk/api/22.txt:3657: error 9: Removed public constructor ActivityManager.TaskDescription(String,Bitmap)
prebuilts/sdk/api/22.txt:3658: error 9: Removed public constructor ActivityManager.TaskDescription(String)
prebuilts/sdk/api/22.txt:3659: error 9: Removed public constructor ActivityManager.TaskDescription()
prebuilts/sdk/api/22.txt:3660: error 9: Removed public constructor ActivityManager.TaskDescription(TaskDescription)
prebuilts/sdk/api/22.txt:3705: error 9: Removed public constructor AlarmManager.AlarmClockInfo(long,PendingIntent)
prebuilts/sdk/api/22.txt:3743: error 9: Removed public constructor AlertDialog.Builder(Context)
prebuilts/sdk/api/22.txt:3744: error 9: Removed public constructor AlertDialog.Builder(Context,int)
prebuilts/sdk/api/22.txt:3866: error 9: Removed public constructor ApplicationErrorReport.AnrInfo()
prebuilts/sdk/api/22.txt:3867: error 9: Removed public constructor ApplicationErrorReport.AnrInfo(Parcel)
prebuilts/sdk/api/22.txt:3876: error 9: Removed public constructor ApplicationErrorReport.BatteryInfo()
prebuilts/sdk/api/22.txt:3877: error 9: Removed public constructor ApplicationErrorReport.BatteryInfo(Parcel)
prebuilts/sdk/api/22.txt:3887: error 9: Removed public constructor ApplicationErrorReport.CrashInfo()
prebuilts/sdk/api/22.txt:3888: error 9: Removed public constructor ApplicationErrorReport.CrashInfo(Throwable)
prebuilts/sdk/api/22.txt:3889: error 9: Removed public constructor ApplicationErrorReport.CrashInfo(Parcel)
prebuilts/sdk/api/22.txt:3902: error 9: Removed public constructor ApplicationErrorReport.RunningServiceInfo()
prebuilts/sdk/api/22.txt:3903: error 9: Removed public constructor ApplicationErrorReport.RunningServiceInfo(Parcel)
......
......
prebuilts/sdk/api/22.txt:49836: error 9: Removed public constructor ThreadPoolExecutor.AbortPolicy()
prebuilts/sdk/api/22.txt:49841: error 9: Removed public constructor ThreadPoolExecutor.CallerRunsPolicy()
prebuilts/sdk/api/22.txt:49846: error 9: Removed public constructor ThreadPoolExecutor.DiscardOldestPolicy()
prebuilts/sdk/api/22.txt:49851: error 9: Removed public constructor ThreadPoolExecutor.DiscardPolicy()
prebuilts/sdk/api/22.txt:50118: error 9: Removed public constructor AbstractQueuedLongSynchronizer.ConditionObject()
prebuilts/sdk/api/22.txt:50165: error 9: Removed public constructor AbstractQueuedSynchronizer.ConditionObject()
prebuilts/sdk/api/22.txt:50260: error 9: Removed public constructor ReentrantReadWriteLock.ReadLock(ReentrantReadWriteLock)
prebuilts/sdk/api/22.txt:50270: error 9: Removed public constructor ReentrantReadWriteLock.WriteLock(ReentrantReadWriteLock)
prebuilts/sdk/api/22.txt:50309: error 9: Removed public constructor Attributes.Name(String)
prebuilts/sdk/api/22.txt:51639: error 9: Removed public constructor PSource.PSpecified(byte)
prebuilts/sdk/api/22.txt:56296: error 9: Removed public constructor SingleClientConnManager.ConnAdapter(PoolEntry,HttpRoute)
prebuilts/sdk/api/22.txt:56300: error 9: Removed public constructor SingleClientConnManager.PoolEntry()
******************************
You have tried to change the API from what has been previously released in
an SDK. Please fix the errors listed above.
******************************
build/core/tasks/apicheck.mk:46: recipe for target 'out/target/common/obj/PACKAGING/checkpublicapi-last-timestamp' failed
make: *** [out/target/common/obj/PACKAGING/checkpublicapi-last-timestamp] Error 38
make: *** Waiting for unfinished jobs....
prebuilts/sdk/system-api/22.txt:8: error 9: Removed public constructor Manifest.permission()
prebuilts/sdk/system-api/22.txt:233: error 9: Removed public constructor Manifest.permission_group()
prebuilts/sdk/system-api/22.txt:272: error 9: Removed public constructor R.anim()
prebuilts/sdk/system-api/22.txt:289: error 9: Removed public constructor R.animator()
prebuilts/sdk/system-api/22.txt:295: error 9: Removed public constructor R.array()
prebuilts/sdk/system-api/22.txt:305: error 9: Removed public constructor R.attr()
prebuilts/sdk/system-api/22.txt:1516: error 9: Removed public constructor R.bool()
prebuilts/sdk/system-api/22.txt:1520: error 9: Removed public constructor R.color()
prebuilts/sdk/system-api/22.txt:1552: error 9: Removed public constructor R.dimen()
prebuilts/sdk/system-api/22.txt:1563: error 9: Removed public constructor R.drawable()
prebuilts/sdk/system-api/22.txt:1741: error 9: Removed public constructor R.fraction()
prebuilts/sdk/system-api/22.txt:1745: error 9: Removed public constructor R.id()
prebuilts/sdk/system-api/22.txt:1798: error 9: Removed public constructor R.integer()
prebuilts/sdk/system-api/22.txt:1806: error 9: Removed public constructor R.interpolator()
prebuilts/sdk/system-api/22.txt:1826: error 9: Removed public constructor R.layout()
prebuilts/sdk/system-api/22.txt:1854: error 9: Removed public constructor R.menu()
prebuilts/sdk/system-api/22.txt:1858: error 9: Removed public constructor R.mipmap()
prebuilts/sdk/system-api/22.txt:1863: error 9: Removed public constructor R.plurals()
prebuilts/sdk/system-api/22.txt:1867: error 9: Removed public constructor R.raw()
prebuilts/sdk/system-api/22.txt:1873: error 9: Removed public constructor R.string()
prebuilts/sdk/system-api/22.txt:1901: error 9: Removed public constructor R.style()
prebuilts/sdk/system-api/22.txt:2625: error 9: Removed public constructor R.transition()
prebuilts/sdk/system-api/22.txt:2637: error 9: Removed public constructor R.xml()
prebuilts/sdk/system-api/22.txt:3305: error 9: Removed public constructor ActionBar.LayoutParams(Context,AttributeSet)
prebuilts/sdk/system-api/22.txt:3306: error 9: Removed public constructor ActionBar.LayoutParams(int,int)
prebuilts/sdk/system-api/22.txt:3307: error 9: Removed public constructor ActionBar.LayoutParams(int,int,int)
prebuilts/sdk/system-api/22.txt:3308: error 9: Removed public constructor ActionBar.LayoutParams(int)
prebuilts/sdk/system-api/22.txt:3309: error 9: Removed public constructor ActionBar.LayoutParams(LayoutParams)
prebuilts/sdk/system-api/22.txt:3310: error 9: Removed public constructor ActionBar.LayoutParams(LayoutParams)
prebuilts/sdk/system-api/22.txt:3323: error 9: Removed public constructor ActionBar.Tab()
prebuilts/sdk/system-api/22.txt:3627: error 9: Removed public constructor ActivityManager.MemoryInfo()
prebuilts/sdk/system-api/22.txt:3639: error 9: Removed public constructor ActivityManager.ProcessErrorStateInfo()
prebuilts/sdk/system-api/22.txt:3659: error 9: Removed public constructor ActivityManager.RecentTaskInfo()
prebuilts/sdk/system-api/22.txt:3674: error 9: Removed public constructor ActivityManager.RunningAppProcessInfo()
prebuilts/sdk/system-api/22.txt:3675: error 9: Removed public constructor ActivityManager.RunningAppProcessInfo(String,int,String)
prebuilts/sdk/system-api/22.txt:3703: error 9: Removed public constructor ActivityManager.RunningServiceInfo()
prebuilts/sdk/system-api/22.txt:3729: error 9: Removed public constructor ActivityManager.RunningTaskInfo()
prebuilts/sdk/system-api/22.txt:3744: error 9: Removed public constructor ActivityManager.TaskDescription(String,Bitmap,int)
prebuilts/sdk/system-api/22.txt:3745: error 9: Removed public constructor ActivityManager.TaskDescription(String,Bitmap)
prebuilts/sdk/system-api/22.txt:3746: error 9: Removed public constructor ActivityManager.TaskDescription(String)
prebuilts/sdk/system-api/22.txt:3747: error 9: Removed public constructor ActivityManager.TaskDescription()
prebuilts/sdk/system-api/22.txt:3748: error 9: Removed public constructor ActivityManager.TaskDescription(TaskDescription)
prebuilts/sdk/system-api/22.txt:3794: error 9: Removed public constructor AlarmManager.AlarmClockInfo(long,PendingIntent)
prebuilts/sdk/system-api/22.txt:3832: error 9: Removed public constructor AlertDialog.Builder(Context)
prebuilts/sdk/system-api/22.txt:3833: error 9: Removed public constructor AlertDialog.Builder(Context,int)
prebuilts/sdk/system-api/22.txt:3956: error 9: Removed public constructor ApplicationErrorReport.AnrInfo()
prebuilts/sdk/system-api/22.txt:3957: error 9: Removed public constructor ApplicationErrorReport.AnrInfo(Parcel)
prebuilts/sdk/system-api/22.txt:3966: error 9: Removed public constructor ApplicationErrorReport.BatteryInfo()
prebuilts/sdk/system-api/22.txt:3967: error 9: Removed public constructor ApplicationErrorReport.BatteryInfo(Parcel)
......
......
prebuilts/sdk/system-api/22.txt:52639: error 9: Removed public constructor AbstractQueuedLongSynchronizer.ConditionObject()
prebuilts/sdk/system-api/22.txt:52686: error 9: Removed public constructor AbstractQueuedSynchronizer.ConditionObject()
prebuilts/sdk/system-api/22.txt:52781: error 9: Removed public constructor ReentrantReadWriteLock.ReadLock(ReentrantReadWriteLock)
prebuilts/sdk/system-api/22.txt:52791: error 9: Removed public constructor ReentrantReadWriteLock.WriteLock(ReentrantReadWriteLock)
prebuilts/sdk/system-api/22.txt:52830: error 9: Removed public constructor Attributes.Name(String)
prebuilts/sdk/system-api/22.txt:54160: error 9: Removed public constructor PSource.PSpecified(byte)
prebuilts/sdk/system-api/22.txt:58817: error 9: Removed public constructor SingleClientConnManager.ConnAdapter(PoolEntry,HttpRoute)
prebuilts/sdk/system-api/22.txt:58821: error 9: Removed public constructor SingleClientConnManager.PoolEntry()
******************************
You have tried to change the API from what has been previously released in
an SDK. Please fix the errors listed above.
******************************
build/core/tasks/apicheck.mk:92: recipe for target 'out/target/common/obj/PACKAGING/checksystemapi-last-timestamp' failed
make: *** [out/target/common/obj/PACKAGING/checksystemapi-last-timestamp] Error 38
Note: external/glide/library/src/main/java/com/bumptech/glide/request/target/ViewTarget.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: frameworks/base/packages/DocumentsUI/src/com/android/documentsui/ProviderExecutor.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
一大堆错误，无从下手的时候非常烦恼！
2. 新增API导致的报错
之前其实修改framework代码的时候有遇到过类似的问题，报错打印中还会夹带如下日志：
******************************
You have tried to change the API from what has been previously approved.
To make these errors go away, you have two choices:
1) You can add "@hide" javadoc comments to the methods, etc. listed in the
errors above.
2) You can update current.txt by executing the following command:
make update-api
To submit the revised current.txt to the main Android repository,
you will need approval.
******************************这种错误解决方式很明确，如果你正在尝试更改API，那么建议你增加 "@hide"的注释来显示隐藏你的接口，或者通过make update-api命令来更新api。
2.1. 隐藏新增的API
增加 "@hide"的方式参考如下：frameworks/multidex/library/test/src/android/util/Log.java
/** @hide */ public static final int LOG_ID_CRASH = 4;
/** @hide */ @SuppressWarnings("unused")
public static int println(int bufID,
int priority, String tag, String msg) {
return 0;
}
2.2. 更新API
TOP目录直接执行：
make update-api但是当前我遇到的问题，我很明确，我并没有修改过framework中的任何代码，没有增加过任何新的属性或者方法，接下来我该怎么办呢？尝试过执行make update-api && make ，发现仍然报错；尝试先执行make installclean && make，还是报错。这就相当痛苦了，总不能把out目录整个清理掉，重新开始编译吧，make clean && make。清理掉out目录，然后重编，也是可以解决问题的。如果你电脑配置比较高，并且你有时间去这么做的话。遇到解决不了的又很怪异的问题，都可以make clean && make来重编。
3. 删除生成的API文件和时间错存根
从打印中我找到了几处这样的打印：
build/core/tasks/apicheck.mk:46: recipe for target 'out/target/common/obj/PACKAGING/checkpublicapi-last-timestamp' failed
make: *** [out/target/common/obj/PACKAGING/checkpublicapi-last-timestamp] Error 38从命名上可以看到这是一个时间戳，应该是编译用来检查上次是什么时候检查过api的一个东西。如果我想单独让系统重新帮我生成这些api的obj文件，是否就可以解决问题呢？
接下来查检查一下out/target/common/obj/PACKAGING/这个目录
$ ls out/target/common/obj/PACKAGING/
boot-jars-package-check_intermediates checkpublicapi-last-timestamp checksystemapi-last-timestamp removed.txt system-removed.txt
checkpublicapi-current-timestamp checksystemapi-current-timestamp public_api.txt system-api.txt
果然都在这里，很好，不管三七二十一全部删掉他们，或做个备份再删，大不了完整地重新编译一遍系统
rm out/target/common/obj/PACKAGING/checksystemapi-current-timestamp
rm out/target/common/obj/PACKAGING/checkpublicapi-current-timestamp
rm out/target/common/obj/PACKAGING/checkpublicapi-last-timestamp
rm out/target/common/obj/PACKAGING/checksystemapi-last-timestamp
rm out/target/common/obj/PACKAGING/public_api.txt
rm out/target/common/obj/PACKAGING/system-api.txt
rm out/target/common/obj/PACKAGING/system-removed.txt
rm out/target/common/obj/PACKAGING/removed.txt删完之后再来编译一遍，发现如下报错：
Checking API: checkpublicapi-last
Checking API: checkpublicapi-current
Checking API: checksystemapi-last
Checking API: checksystemapi-current
Install: out/target/product/s5p4418_lonbon/system/lib/libc.so
target thumb C: init <= system/core/init/builtins.c
target thumb C: init <= system/core/init/init.c
target thumb C: init <= system/core/init/devices.c
target thumb C: init <= system/core/init/property_service.c
system/core/init/devices.c: In function 'handle_generic_device_event':
system/core/init/devices.c:761:10: warning: 'kernel_logger' is deprecated (declared at system/core/init/devices.c:670) [-Wdeprecated-declarations]
kernel_logger();
^
target thumb C: init <= system/core/init/util.c
target thumb C: init <= system/core/init/parser.c
com.google.doclava.apicheck.ApiParseException: Could not open file for parsing: out/target/common/obj/PACKAGING/public_api.txt
at com.google.doclava.apicheck.ApiCheck.parseApi(ApiCheck.java:141)
at com.google.doclava.apicheck.ApiCheck.checkApi(ApiCheck.java:113)
at com.google.doclava.apicheck.ApiCheck.main(ApiCheck.java:67)
Caused by: java.io.FileNotFoundException: out/target/common/obj/PACKAGING/public_api.txt (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:146)
at java.io.FileInputStream.<init>(FileInputStream.java:101)
at com.google.doclava.apicheck.ApiCheck.parseApi(ApiCheck.java:139)
... 2 more
Error parsing API
******************************
You have tried to change the API from what has been previously released in
an SDK. Please fix the errors listed above.
******************************
build/core/tasks/apicheck.mk:46: recipe for target 'out/target/common/obj/PACKAGING/checkpublicapi-last-timestamp' failed
make: *** [out/target/common/obj/PACKAGING/checkpublicapi-last-timestamp] Error 38
make: *** Waiting for unfinished jobs....
target thumb C: init <= system/core/init/keychords.c
com.google.doclava.apicheck.ApiParseException: Could not open file for parsing: out/target/common/obj/PACKAGING/public_api.txt
at com.google.doclava.apicheck.ApiCheck.parseApi(ApiCheck.java:141)
at com.google.doclava.apicheck.ApiCheck.checkApi(ApiCheck.java:113)
at com.google.doclava.apicheck.ApiCheck.main(ApiCheck.java:67)
Caused by: java.io.FileNotFoundException: out/target/common/obj/PACKAGING/public_api.txt (No such file or directory)
at java.io.FileInputStream.open(Native Method)
com.google.doclava.apicheck.ApiParseException: Could not open file for parsing: out/target/common/obj/PACKAGING/system-api.txt
at com.google.doclava.apicheck.ApiCheck.parseApi(ApiCheck.java:141)
at com.google.doclava.apicheck.ApiCheck.checkApi(ApiCheck.java:113)
at com.google.doclava.apicheck.ApiCheck.main(ApiCheck.java:67)
Caused by: java.io.FileNotFoundException: out/target/common/obj/PACKAGING/system-api.txt (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:146)
at java.io.FileInputStream.<init>(FileInputStream.java:101)
at com.google.doclava.apicheck.ApiCheck.parseApi(ApiCheck.java:139)
... 2 more
Error parsing API
at java.io.FileInputStream.<init>(FileInputStream.java:146)
at java.io.FileInputStream.<init>(FileInputStream.java:101)
at com.google.doclava.apicheck.ApiCheck.parseApi(ApiCheck.java:139)
... 2 more
Error parsing API
******************************
You have tried to change the API from what has been previously approved.
To make these errors go away, you have two choices:
1) You can add "@hide" javadoc comments to the methods, etc. listed in the
errors above.
2) You can update current.txt by executing the following command:
make update-api
To submit the revised current.txt to the main Android repository,
you will need approval.
******************************
build/core/tasks/apicheck.mk:62: recipe for target 'out/target/common/obj/PACKAGING/checkpublicapi-current-timestamp' failed
make: *** [out/target/common/obj/PACKAGING/checkpublicapi-current-timestamp] Error 38
******************************
You have tried to change the API from what has been previously released in
an SDK. Please fix the errors listed above.
******************************
build/core/tasks/apicheck.mk:92: recipe for target 'out/target/common/obj/PACKAGING/checksystemapi-last-timestamp' failed
make: *** [out/target/common/obj/PACKAGING/checksystemapi-last-timestamp] Error 38
com.google.doclava.apicheck.ApiParseException: Could not open file for parsing: out/target/common/obj/PACKAGING/system-api.txt
at com.google.doclava.apicheck.ApiCheck.parseApi(ApiCheck.java:141)
at com.google.doclava.apicheck.ApiCheck.checkApi(ApiCheck.java:113)
at com.google.doclava.apicheck.ApiCheck.main(ApiCheck.java:67)
Caused by: java.io.FileNotFoundException: out/target/common/obj/PACKAGING/system-api.txt (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:146)
at java.io.FileInputStream.<init>(FileInputStream.java:101)
at com.google.doclava.apicheck.ApiCheck.parseApi(ApiCheck.java:139)
... 2 more
Error parsing API
******************************
You have tried to change the API from what has been previously approved.
To make these errors go away, you have two choices:
1) You can add "@hide" javadoc comments to the methods, etc. listed in the
errors above.
2) You can update current.txt by executing the following command:
make update-api
To submit the revised current.txt to the main Android repository,
you will need approval.
******************************
build/core/tasks/apicheck.mk:108: recipe for target 'out/target/common/obj/PACKAGING/checksystemapi-current-timestamp' failed
make: *** [out/target/common/obj/PACKAGING/checksystemapi-current-timestamp] Error 38
很明显，刚才的api文件被删掉了，这里没有自动生成，所以会报错找不到，是不是还有其他类似的标识用来标识是否需要重新生成javadoc，也许有呢？在out/target/common/目录下找找看，我发现了out/target/common/docs/目录，并且在这个目录下有如下文件：
$ ls out/target/common/docs/
api-stubs-timestamp doc-comment-check doc-comment-check-timestamp system-api-stubs-timestamp
两个api相关的存根时间戳，不要犹豫果断删掉他们：
rm out/target/common/docs/system-api-stubs-timestamp
rm out/target/common/docs/api-stubs-timestamp接下来编译就很顺利地进行了，编译打印中出现了如下打印：
Docs droiddoc: out/target/common/docs/api-stubs
Docs droiddoc: out/target/common/docs/system-api-stubs
4. API报错解决方案总结
总结一下上面遇到的API报错的解决方法：
4.1. 新增API后手动更新API或添加API隐藏声明
更新framework代码之后，有可能需要更新api，通过执行update-api的命令进行更新即可
make update-api如果包含需要隐藏的接口或属性也可以添加 /** @hide */注释来声明。这种情况下一般只会报几个错误而已，不会出现大量的错误。
4.2. 删除已生成的API文件和时间戳存根使重新生成
如果并没有修改framework代码，或者执行update-api的命令后仍然无法解决的话，首先你可以把api文件还原一下，不需要做update-api，撤销如下文件在update-api过程中自动做的修改：
modified: frameworks/base/api/current.txt
modified: frameworks/base/api/system-current.txt
然后删除api的存根时间戳和obj文件，让编译自动重新生成这些文件：
rm out/target/common/docs/system-api-stubs-timestamp
rm out/target/common/docs/api-stubs-timestamp
rm out/target/common/obj/PACKAGING/checksystemapi-current-timestamp
rm out/target/common/obj/PACKAGING/checkpublicapi-current-timestamp
rm out/target/common/obj/PACKAGING/checkpublicapi-last-timestamp
rm out/target/common/obj/PACKAGING/checksystemapi-last-timestamp
rm out/target/common/obj/PACKAGING/public_api.txt
rm out/target/common/obj/PACKAGING/system-api.txt
rm out/target/common/obj/PACKAGING/system-removed.txt
rm out/target/common/obj/PACKAGING/removed.txt之后重新编译Android。
4.3. 检查JDK版本是否匹配
JDK版本必须和Android SDK版本匹配
$ javac -version
javac 1.7.0_161Android L(SDK API21)以下使用JDK 1.6，Android M(SDK API23)及以上使用JDK 1.8，Android L使用JDK 1.7,
详细的版本对应关系大家可以从网上找到，或者对应的项目编译文档里面会有说明。具体安装说明这里也不介绍了。
版本需要匹配如果不匹配的话，生成public_api.txt等api文档时就有可能报API错误。
4.3.1. update-alternatives命令方式配置JDK版本
如果不一致的话，先安装对应的版本，然后通过命令来切换到对应的版本：
$ sudo update-alternatives --config java
$ sudo update-alternatives --config javac
$ sudo update-alternatives --config javaws
$ sudo update-alternatives --config jar
$ sudo update-alternatives --config javadoc
$ sudo update-alternatives --config javap (EDIT - This is needed to compile Kit Kat 4.4)4.3.2. PATH环境变量方式配置JDK版本
通过设置环境变量来设置对应的版本，下面以切换JDK 1.7和1.8的版本为例
切换JDK 1.8
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar切换JDK 1.7
export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar切换完成之后按照2的方式清理下部分文件之后就可以正常编译了
4.4. 重新完整编译
如果仍然无法解决的话，只能清理out目录，重新完整地编译一遍了：
make clean && make -j8如果以上方式还不能帮你解决问题的话，可以把错误贴在评论里面。
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