{"id":971,"date":"2017-03-21T14:36:17","date_gmt":"2017-03-21T06:36:17","guid":{"rendered":"http:\/\/www.yusian.com\/blog\/?p=971"},"modified":"2017-03-21T14:36:17","modified_gmt":"2017-03-21T06:36:17","slug":"android%e5%ae%9e%e6%88%98%e5%bc%80%e5%8f%91%e4%b9%8bhandler%e7%9a%84%e5%9f%ba%e6%9c%ac%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/android\/2017\/03\/21\/143617971.html","title":{"rendered":"Android\u5b9e\u6218\u5f00\u53d1\u4e4bHandler\u7684\u57fa\u672c\u4f7f\u7528"},"content":{"rendered":"

1\u3001Android\u591a\u7ebf\u7a0b\u4e4b\u95f4\u7684\u6570\u636e\u901a\u8baf\u901a\u8fc7Handler\u6765\u4f20\u9012Message\uff1b
\n2\u3001\u5728\u5f53\u524d\u7ebf\u7a0b\u4e2d\u521b\u5efaMessage\u5bf9\u8c61\uff0c\u9700\u8981\u53d1\u9001\u5230\u54ea\u4e2a\u7ebf\u7a0b\u5c31\u8c03\u7528\u54ea\u4e2a\u7ebf\u7a0b\u5f53\u4e2d\u7684Handler\uff1b
\n3\u3001\u521d\u59cb\u5316\u7ebf\u7a0b\u5728Thread\u7684\u6784\u9020\u65b9\u6cd5\u4e2d\u4f20\u5165\u4e00\u4e2aRunnable\u5bf9\u8c61(\u62bd\u8c61\u7c7b)\uff0c\u5e76\u4e14\u5b9e\u73b0Runnable\u5bf9\u8c61\u4e2d\u7684run\u65b9\u6cd5\uff1b
\n4\u3001\u8c03\u7528Thread\u7684start()\u65b9\u6cd5\u542f\u52a8\u7ebf\u7a0b\uff1b
\n5\u3001\u521d\u59cb\u5316Handler\u5728\u5176\u6784\u9020\u65b9\u6cd5\u4e2d\u4f20\u5165\u4e00\u4e2aCallback\u5bf9\u8c61(\u63a5\u53e3)\uff0c\u5e76\u4e14\u5b9e\u73b0\u8be5\b\u5bf9\u8c61\u7684handleMessage()\u65b9\u6cd5\uff1b
\n6\u3001\u6d88\u606f\u901a\u8fc7handler\u53d1\u9001\u540e\u4f1a\u81ea\u52a8\u56de\u8c03Callback\u63a5\u53e3\u4e2d\u7684handleMessage()\u65b9\u6cd5\uff1b
\n7\u3001\u5173\u952e\u4ee3\u7801\uff1a
\nActivity<\/p>\n

package com.yusian.handler;\n\nimport android.os.Handler;\nimport android.os.Message;\nimport android.support.v7.app.AppCompatActivity;\nimport android.os.Bundle;\nimport android.view.View;\nimport android.widget.Button;\n\npublic class MainActivity extends AppCompatActivity implements View.OnClickListener{\n    private Button innerBtn;\n    private Handler mHandler;\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.activity_main);\n        \/\/ \u521d\u59cb\u5316\u6309\u94ae\u76d1\u542c\u4e8b\u4ef6\n        innerBtn = (Button)findViewById(R.id.btn_inner);\n        innerBtn.setOnClickListener(this);\n\n        \/\/ \u521d\u59cb\u5316handler\uff0c\u63a5\u6536\u5230\u6d88\u606f\u7684\u5904\u7406\u52a8\u4f5c\n        Handler.Callback callback = new Handler.Callback() {\n            @Override\n            public boolean handleMessage(Message msg) {\n                String str= Thread.currentThread().getName();\n                System.out.println(\"\u5f53\u524d\u7ebf\u7a0b\uff1a\"+str+\", \u63a5\u6536\u5230\"+msg.obj);\n                return false;\n            }\n        };\n        mHandler = new Handler(callback);\n    }\n\n    @Override\n    \/\/ \u6309\u94ae\u4e8b\u4ef6\u7684\u56de\u8c03\u65b9\u6cd5\n    public void onClick(View v) {\n        Runnable runnable = new Runnable() {\n            @Override\n            public void run() {\n                \/\/ \u65b0\u7ebf\u7a0b\u7684run\u65b9\u6cd5\u4e2d\u53d1\u9001message\uff0c\u8c01\u7684Handler\u8c01\u5904\u7406\n                Message msg = new Message();\n                String str = Thread.currentThread().getName();\n                msg.obj = \"\u6765\u81ea\u7ebf\u7a0b\"+str+\"\u7684\u6d88\u606f\";\n                mHandler.sendMessage(msg);\n            }\n        };\n        Thread  thread = new Thread(runnable);\n        thread.start();\n    }\n}<\/pre>\n
\u8fd0\u884c\u7ed3\u679c\uff1a<\/strong>
\nI\/System.out: \u5f53\u524d\u7ebf\u7a0b\uff1amain, \u63a5\u6536\u5230\u6765\u81ea\u7ebf\u7a0bThread-617\u7684\u6d88\u606f
\nI\/System.out: \u5f53\u524d\u7ebf\u7a0b\uff1amain, \u63a5\u6536\u5230\u6765\u81ea\u7ebf\u7a0bThread-618\u7684\u6d88\u606f
\nI\/System.out: \u5f53\u524d\u7ebf\u7a0b\uff1amain, \u63a5\u6536\u5230\u6765\u81ea\u7ebf\u7a0bThread-619\u7684\u6d88\u606f
\nI\/System.out: \u5f53\u524d\u7ebf\u7a0b\uff1amain, \u63a5\u6536\u5230\u6765\u81ea\u7ebf\u7a0bThread-620\u7684\u6d88\u606f<\/p>\n","protected":false},"excerpt":{"rendered":"
1\u3001Android\u591a\u7ebf\u7a0b\u4e4b\u95f4\u7684\u6570\u636e\u901a\u8baf\u901a\u8fc7Handler\u6765\u4f20\u9012Message\uff1b 2\u3001\u5728\u5f53\u524d\u7ebf\u7a0b\u4e2d\u521b\u5efaMessage\u5bf9\u8c61\uff0c\u9700\u8981\u53d1\u9001\u5230\u54ea\u4e2a\u7ebf\u7a0b\u5c31\u8c03\u7528\u54ea\u4e2a\u7ebf\u7a0b\u5f53\u4e2d\u7684Handler\uff1b 3\u3001\u521d\u59cb\u5316\u7ebf\u7a0b\u5728Thread\u7684\u6784\u9020\u65b9\u6cd5\u4e2d\u4f20\u5165\u4e00\u4e2aRunnable\u5bf9\u8c61(\u62bd\u8c61\u7c7b)\uff0c\u5e76\u4e14\u5b9e\u73b0Runnable\u5bf9\u8c61\u4e2d\u7684run\u65b9\u6cd5\uff1b 4\u3001\u8c03\u7528Thread\u7684start()\u65b9\u6cd5\u542f\u52a8\u7ebf\u7a0b\uff1b 5\u3001\u521d\u59cb\u5316Handler\u5728\u5176\u6784\u9020\u65b9\u6cd5\u4e2d\u4f20\u5165\u4e00\u4e2aCallback\u5bf9\u8c61(\u63a5\u53e3)\uff0c\u5e76\u4e14\u5b9e\u73b0\u8be5\b\u5bf9\u8c61\u7684handleMessage()\u65b9\u6cd5\uff1b 6\u3001\u6d88\u606f\u901a\u8fc7handler\u53d1\u9001\u540e\u4f1a\u81ea\u52a8\u56de\u8c03Callback\u63a5\u53e3\u4e2d\u7684handleMessage()\u65b9\u6cd5\uff1b 7\u3001\u5173\u952e\u4ee3\u7801\uff1a Activity package com.yusian.handler; import android.os.Handler; import android.os.Message; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity implements View.OnClickListener{ private Button innerBtn; private Handler mHandler; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); \/\/ \u521d\u59cb\u5316\u6309\u94ae\u76d1\u542c\u4e8b\u4ef6 innerBtn = (Button)findViewById(R.id.btn_inner); innerBtn.setOnClickListener(this); \/\/ \u521d\u59cb\u5316handler\uff0c\u63a5\u6536\u5230\u6d88\u606f\u7684\u5904\u7406\u52a8\u4f5c Handler.Callback callback = new […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[33],"class_list":["post-971","post","type-post","status-publish","format-standard","hentry","category-android","tag-33"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=971"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/971\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}