Android_Binder startAcitivity的Binder过程
2021/9/23 23:12:34
本文主要是介绍Android_Binder startAcitivity的Binder过程,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
以 startActivity(newIntent); 为例
路径 frameworks/base/core/java/android/app/Activity.java
@Override public void startActivity(Intent intent, @Nullable Bundle options) { if (options != null) { startActivityForResult(intent, -1, options); } else { // Note we want to go through this call for compatibility with // applications that may have overridden the method. startActivityForResult(intent, -1); } }
调用 mInstrumentation.execStartActivity
public void startActivityForResult(@RequiresPermission Intent intent, int requestCode, @Nullable Bundle options) { if (mParent == null) { options = transferSpringboardActivityOptions(options); Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( this, mMainThread.getApplicationThread(), mToken, this, intent, requestCode, options); ... }
mMainThread.getApplicationThread()实现为
路径 frameworks/base/core/java/android/app/ActivityThread.java
public ApplicationThread getApplicationThread() { return mAppThread; } final ApplicationThread mAppThread = new ApplicationThread(); private class ApplicationThread extends IApplicationThread.Stub
实际上这也是一个binder通信类 把这个传过去 就实现了binder的双向通信
路径 frameworks/base/core/java/android/app/Instrumentation.java
调用 ActivityManager.getService().startActivity
public ActivityResult execStartActivity( Context who, IBinder contextThread, IBinder token, Activity target, Intent intent, int requestCode, Bundle options) { IApplicationThread whoThread = (IApplicationThread) contextThread; ... int result = ActivityManager.getService() .startActivity(whoThread, who.getBasePackageName(), intent, intent.resolveTypeIfNeeded(who.getContentResolver()), token, target != null ? target.mEmbeddedID : null, requestCode, 0, null, options); checkStartActivityResult(result, intent); } catch (RemoteException e) { throw new RuntimeException("Failure from system", e); } return null; }
路径 frameworks/base/core/java/android/app/ActivityManager.java
public static final String ACTIVITY_SERVICE = "activity";
public static IActivityManager getService() { return IActivityManagerSingleton.get(); } private static final Singleton<IActivityManager> IActivityManagerSingleton = new Singleton<IActivityManager>() { @Override protected IActivityManager create() { final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); final IActivityManager am = IActivityManager.Stub.asInterface(b); return am; } };
关于服务何时被add到ServiceManager中的可以参考这篇
android8.1启动过程(八) SystemServer 下_we1less的博客-CSDN博客
这篇关于Android_Binder startAcitivity的Binder过程的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!
- 2024-06-06Package Easy(基于 NSIS 的打包exe安装包工具)使用方法-icode9专业技术文章分享
- 2024-06-06基于 casdoor 的 ELK 开源登录认证解决方案: elk-auth-casdoor-icode9专业技术文章分享
- 2024-05-29Elasticsearch慢查询日志配置
- 2024-05-29揭秘华为如此多成功项目的产品关键——Charter模板
- 2024-05-29海外IDC业务拓展的7大挑战
- 2024-05-29InLine Chat功能优化对标Github Copilot,CodeGeeX带来更高效、更直观的编程体验!
- 2024-05-29CodeGeeX 智能编程助手 6 项功能升级,在Visual Studio插件市场霸榜2周!
- 2024-05-29AutoMQ 生态集成 Apache Doris
- 2024-05-292024年IDC行业的深度挖掘:机遇、挑战与未来展望
- 2024-05-29五款扩展组件齐发 —— Volcano、Keda、Crane-scheduler 等,邀你体验