Android-AsyncChannel源码分析（补汉6个汉字字）.docx

HYPERLINK /shadowliucs/article/detailsndroid AsyncChannel源码分析 目录HYPERLINK /shadowliucs/article/details(?)HYPERLINK /shadowliucs/article/details[-] HYPERLINK /shadowliucs/article/detailst0同一进程间的Handler连接 HYPERLINK /shadowliucs/article/detailst1不同进程间的Handler连接 HYPERLINK /shadowliucs/article/detailst2消息同步发送 HYPERLINK /shadowliucs/article/detailst3消息异步发送 AsyncChannel类用于处理两个Handler之间的异步消息传递，消息传递的Handler可以出于同一进程，也可以处于不同进程，不同进程之间的Handler消息传递使用Android的Binder通信机制来实现。 1.同一进程间的Handler连接 fullyConnectSync函数建立的是进程内的Handler通信 [java] HYPERLINK /yangwen123/article/detailsview plainHYPERLINK /yangwen123/article/detailscopy public int fullyConnectSync(Context srcContext, Handler srcHandler, Handler dstHandler) { int status = connectSync(srcContext, srcHandler, dstHandler); if (status == STATUS_SUCCESSFUL) { Message response = sendMessageSynchronously(CMD_CHANNEL_FULL_CONNECTION); status = response.arg1; } return status; } [java] HYPERLINK /yangwen123/article/detailsview plainHYPERLINK /yangwen123/article/detailscopy public int connectSync(Context srcContext, Handler srcHandler, Handler dstHandler) { return connectSync(srcContext, srcHandler, new Messenger(dstHandler)); } [java] HYPERLINK /yangwen123/article/detailsview plainHYPERLINK /yangwen123/article/detailscopy public int connectSync(Context srcContext, Handler srcHandler, Messenger dstMessenger) { if (DBG) log(halfConnectSync srcHandler to the dstMessenger E); connected(srcContext, srcHandler, dstMessenger); if (DBG) log(halfConnectSync srcHandler to the dstMessenger X); return STATUS_SUCCESSFUL; } [java] HYPERLINK /yangwen123/article/detailsview plainHYPERLINK /yangwen123/article/detailscopy public void connected(Context srcContext, Handler srcHandler, Messenger dstMessenger) { if (DBG) log