从 10.0 移植了几个类过来，没想到一编译出来几十个 errors，这就很离谱，明明是现成的代码。
后来仔细看了错误 log 提示，Your API changes are triggering API Lint warnings or errors
详细 log 如下
26 new API lint issues were found.
See tools/metalava/API-LINT.md for how to handle these.
************************************************************
Your API changes are triggering API Lint warnings or errors.
To make these errors go away, fix the code according to the
error and/or warning messages above.
If it is not possible to do so, there are workarounds:
1. You can suppress the errors with @SuppressLint("")
2. You can update the baseline by executing the following
command:
cp
"/home/xxx/android11.0/8788/alps/out/soong/.intermediates/frameworks/base/api-stubs-docs/android_common/api_lint_baseline.txt"
"/home/xxx/android11.0/8788/alps/frameworks/base/api/lint-baseline.txt"
To submit the revised baseline.txt to the main Android
repository, you will need approval.
************************************************************
[ 45% 4001/8864] //frameworks/base:test-api-stubs-docs metalava merged [common]
那就按照提示，把 out 下的 api_lint_baseline.txt copy 到 frameworks/base/api/lint-baseline.txt
再次编译没啥变化，还是一样的错误提示。网上找了这篇
Android R 系统编译时 Lint 工具检查问题记录
看评论里说的如果 lint-baseline.txt 不生效，去检查 frameworks/base/StubLibraries.bp 中是否有添加依赖。
后来我把依赖加进去后，再次编译错误提示变了，有点类似需要执行
make api-stubs-docs-non-updatable
make api-stubs-docs-non-updatable-update-current-api
make api-stubs-docs-update-current-api
但是执行了以后好像错误依旧。
解决办法根据错误 log 提示找到对应地方添加 @SuppressLint("")
frameworks/base/core/java/android/hardware/player/AndroidPlayer.java:63: error: Registration methods should have overload that accepts delivery Executor: `AndroidPlayer` [ExecutorRegistration]
frameworks/base/core/java/android/hardware/player/CodecPlayerImpl.java:16: error: Don't expose your implementation details: `CodecPlayerImpl` ends with `Impl` [EndsWithImpl]
frameworks/base/core/java/android/hardware/player/CodecPlayerImpl.java:62: error: Registration methods should have overload that accepts delivery Executor: `CodecPlayerImpl` [ExecutorRegistration]
frameworks/base/core/java/android/hardware/player/CodecPlayerImpl.java:496: error: Returned time values are strongly encouraged to be in milliseconds unless you need the extra precision, was `getVsyncDurationNanos` [MethodNameUnits]
frameworks/base/core/java/android/hardware/player/MediaCodecPlayer.java:34: error: Registration methods should have overload that accepts delivery Executor: `MediaCodecPlayer` [ExecutorRegistration]
frameworks/base/core/java/android/hardware/player/MediaCodecPlayer.java:15: error: All constants must be defined at compile time: android.hardware.player.MediaCodecPlayer#PLAY_TIME_MS [CompileTimeConstant]
frameworks/base/core/java/android/hardware/player/MediaTimeProvider.java:9: error: Returned time values are strongly encouraged to be in milliseconds unless you need the extra precision, was `getVsyncDurationNanos` [MethodNameUnits]
frameworks/base/core/java/android/hardware/player/VideoframeReleaseTimeHelper.java:91: error: Returned time values are strongly encouraged to be in milliseconds unless you need the extra precision, was `getVsyncDurationNanos` [MethodNameUnits]
8 new API lint issues were found.
See tools/metalava/API-LINT.md for how to handle these.
************************************************************
Your API changes are triggering API Lint warnings or errors.
To make these errors go away, fix the code according to the
error and/or warning messages above.
If it is not possible to do so, there are workarounds:
1. You can suppress the errors with @SuppressLint("")
2. You can add a baseline file of existing lint failures
to the build rule of api-stubs-docs-non-updatable.
************************************************************
import android.annotation.NonNull;
import android.annotation.SuppressLint;
导入上面这两个包
@SuppressLint("") 中的 id 就是错误 log 中的 [xxxxxx]
@NonNull 也可以用 @SuppressLint(“MissingNullability”)
具体修改
CodecPlayerImpl.java:62: error: Registration methods should have overload that accepts delivery Executor: CodecPlayerImpl [ExecutorRegistration]
@SuppressLint("ExecutorRegistration")
public CodecPlayerImpl(@NonNull Surface surface,
@NonNull ImageReader imageReader,
double defaultDisplayRefreshRate, boolean AudioDecodeOnly,
@NonNull CodecState.OnVideoImageAvailablelistener onVideoImageAvailablelistener,
@NonNull OnCodecErrorListener onCodecErrorListener){
CodecPlayerImpl.java:496: error: Returned time values are strongly encouraged to be in milliseconds unless you need the extra precision, was getVsyncDurationNanos [MethodNameUnits]
@SuppressLint("MethodNameUnits")
public long getVsyncDurationNanos() {
if (mframeReleaseTimeHelper != null) {
return mframeReleaseTimeHelper.getVsyncDurationNanos();
} else {
return -1;
}
}
Android API 规范
