目录
前言
简单记录一下，在Android源码中的Intent.java定义自己的源码。记录一下，方便自己查阅。
流水账哈，只是方便自己而已。
\frameworks\base\core\api\current.txt \frameworks\base\core\java\android\content\Intent.java
正文
Intent.java新增一个快速扫描完成广播，主要提供给Android扫描器（MediaProvider）使用。
新增Action
已知Android提供的如下通知Action
Intent.ACTION_MEDIA_SCANNER_STARTED Intent.ACTION_MEDIA_SCANNER_FINISHED
不够用，因此，这里新增一个。
Intent.java
参考ACTION_MEDIA_SCANNER_FINISHED的定义，改为如下：
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_MEDIA_FAST_SCAN_FINISHED = "android.intent.action.MEDIA_FAST_SCAN_FINISHED";
current.txt
field public static final String ACTION_MEDIA_FAST_SCAN_FINISHED = "android.intent.action.MEDIA_FAST_SCAN_FINISHED";
问题1: Inconsistent action value
frameworks/base/core/java/android/content/Intent.java:3545: error: Inconsistent action value; expected `android.intent.action.MEDIA_SCANNER_FAST_FINISHED`, was `android.intent.action.MEDIA_FAST_SCAN_FINISHED` [ActionValue]Error: metalava detected the following problems: frameworks/base/core/java/android/content/Intent.java:3545: error: Inconsistent action value; expected `android.intent.action.MEDIA_SCANNER_FAST_FINISHED`, was `android.intent.action.MEDIA_FAST_SCAN_FINISHED` [ActionValue] ************************************************************ 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("<id>") where the <id> is given in brackets in the error message above. 2. You can add a baseline file of existing lint failures to the build rule of api-stubs-docs-non-updatable. ************************************************************
提示[Inconsistent action value]意思值和action不一致。
# 错误[这部分值MEDIA_FAST_SCAN_FINISHED不一样] public static final String ACTION_MEDIA_SCANNER_FAST_FINISHED = "android.intent.action.MEDIA_FAST_SCAN_FINISHED"; # 正确[MEDIA_SCANNER_FAST_FINISHED一样] public static final String ACTION_MEDIA_SCANNER_FAST_FINISHED = "android.intent.action.MEDIA_SCANNER_FAST_FINISHED";
然后重新执行
make update-api
问题2：FileUriExposedException
Failed operation Intent { act=com.android.providers.media.action.SCAN_VOLUME (has extras) } android.os.FileUriExposedException: file:///storage/5055-B658 exposed beyond app through Intent.getData() at android.os.StrictMode.onFileUriExposed(StrictMode.java:2208) at android.net.Uri.checkFileUriExposed(Uri.java:2407) at android.content.Intent.prepareToLeaveProcess(Intent.java:11860) at android.content.Intent.prepareToLeaveProcess(Intent.java:11809) at android.app.ContextImpl.sendBroadcastAsUser(ContextImpl.java:1415) at android.content.ContextWrapper.sendBroadcastAsUser(ContextWrapper.java:593) at com.android.providers.media.MediaService.onScanVolume(MediaService.java:212) at com.android.providers.media.MediaService.onHandleWork(MediaService.java:97) at androidx.core.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:396) at androidx.core.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:387) at android.os.AsyncTask$3.call(AsyncTask.java:394) at java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637) at java.lang.Thread.run(Thread.java:1023)
ACTION_MEDIA_SCANNER_FAST_FINISHED是新增通知app媒体扫描结束的，需要跟其他媒体Action一样，需要进行过滤。
/** * Prepare this {@link Intent} to leave an app process. * * @hide */ public void prepareToLeaveProcess(boolean leavingPackage) { //略 if (mAction != null && mData != null && StrictMode.vmFileUriExposureEnabled() && leavingPackage) { switch (mAction) { case ACTION_MEDIA_REMOVED: case ACTION_MEDIA_UNMOUNTED: case ACTION_MEDIA_CHECKING: case ACTION_MEDIA_NOFS: case ACTION_MEDIA_MOUNTED: case ACTION_MEDIA_SHARED: case ACTION_MEDIA_UNSHARED: case ACTION_MEDIA_BAD_REMOVAL: case ACTION_MEDIA_UNMOUNTABLE: case ACTION_MEDIA_EJECT: case ACTION_MEDIA_SCANNER_STARTED: case ACTION_MEDIA_SCANNER_FINISHED: case ACTION_MEDIA_SCANNER_SCAN_FILE: case ACTION_PACKAGE_NEEDS_VERIFICATION: case ACTION_PACKAGE_NEEDS_INTEGRITY_VERIFICATION: case ACTION_PACKAGE_VERIFIED: case ACTION_PACKAGE_ENABLE_ROLLBACK: //新增的 case ACTION_MEDIA_SCANNER_FAST_FINISHED: // Ignore legacy actions break; default: mData.checkFileUriExposed("Intent.getData()"); } } //略 }
make update-api
下面情况下就需要
添加系统API或者修改@hide的API后，需要执行
make update-api //然后再make这部分暂时没测试过~_~
修改公共api后，需要
make update-api
例子1
在修改完系统Api或部分公共Api后（常见于修改Intent.java、KeyEvent.java等等），执行源码编译时会有如下提示
****************************** 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. ******************************
一般会有提示，然后执行提示命令即可。
提交代码是也要把make update-api修改的contex.txt文件一起提交！
例子2
除了 make update-api，还有其他命令。
下面是修改MediaProvider中MediaStore.java是提示的
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 (and remove @SystemApi/@TestApi/etc) to the new methods, etc. shown in the above diff. 2. You can update current.txt and/or removed.txt by executing the following command: m framework-mediaprovider.stubs.source-update-current-api To submit the revised current.txt to the main Android repository, you will need approval.
这里提示
m framework-mediaprovider.stubs.source-update-current-api
反正看提示，不同情况需要使用不同的命令。
其他
还有其他的命令，随手记录一下
make api-stubs-docs-non-updatable make api-stubs-docs-non-updatable-update-current-api make api-stubs-docs-update-current-api
参考文章
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