{"id":4661,"date":"2023-05-10T12:06:00","date_gmt":"2023-05-10T04:06:00","guid":{"rendered":"https:\/\/app.applebyme.cn\/cloud\/?p=4661"},"modified":"2023-05-10T12:06:00","modified_gmt":"2023-05-10T04:06:00","slug":"android-handler%e5%b0%81%e8%a3%85%e4%b8%bb%e8%a6%81%e7%94%a8%e9%80%94%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/app.applebyme.cn\/cloud\/appshangjia\/4661.html","title":{"rendered":"android handler\u5c01\u88c5\u4e3b\u8981\u7528\u9014\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>Android\u4e2d\u7684Handler\u662f\u4e00\u79cd\u6d88\u606f\u673a\u5236\uff0c\u5b83\u662fAndroid\u7cfb\u7edf\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u7ec4\u4ef6\u3002\u5b83\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u7ebf\u7a0b\u4e4b\u95f4\u4f20\u9012\u6d88\u606f\uff0c\u5e76\u4e14\u53ef\u4ee5\u65b9\u4fbf\u5730\u8fdb\u884c\u7ebf\u7a0b\u95f4\u901a\u4fe1\u3002\u5728Android\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u7528\u5230Handler\u6765\u5b9e\u73b0\u5f02\u6b65\u7ebf\u7a0b\u4efb\u52a1\u3001\u66f4\u65b0UI\u7b49\u64cd\u4f5c\u3002\u4f46\u662f\uff0cHandler\u7684\u4f7f\u7528\u5e76\u4e0d\u662f\u5f88\u65b9\u4fbf\uff0c\u9700\u8981\u8fdb\u884c\u4e00\u4e9b\u5c01\u88c5\u624d\u80fd\u66f4\u597d\u5730\u4f7f\u7528\u3002\u4e0b\u9762\u6211\u4eec\u5c31\u6765\u8be6\u7ec6\u4ecb\u7ecd\u4e00\u4e0b\u5982\u4f55\u5c01\u88c5Handler\u3002<\/p>\n<p>1. Handler\u7684\u539f\u7406<\/p>\n<p>\u5728Android\u4e2d\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u4e00\u4e2a\u6d88\u606f\u961f\u5217\uff0c\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u60f3\u8981\u7ed9\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u53d1\u9001\u6d88\u606f\u65f6\uff0c\u5b83\u4f1a\u628a\u6d88\u606f\u5c01\u88c5\u6210\u4e00\u4e2aMessage\u5bf9\u8c61\uff0c\u5e76\u4e14\u5c06\u5176\u653e\u5165\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u7684\u6d88\u606f\u961f\u5217\u4e2d\u3002\u5f53\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u5904\u7406\u5b8c\u5f53\u524d\u7684\u6d88\u606f\u540e\uff0c\u5c31\u4f1a\u4ece\u6d88\u606f\u961f\u5217\u4e2d\u53d6\u51fa\u4e0b\u4e00\u4e2a\u6d88\u606f\u5e76\u8fdb\u884c\u5904\u7406\u3002\u8fd9\u5c31\u662fHandler\u7684\u539f\u7406\u3002<\/p>\n<p>2. Handler\u7684\u4f7f\u7528<\/p>\n<p>Handler\u7684\u4f7f\u7528\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u521b\u5efa\u4e00\u4e2aHandler\u5bf9\u8c61\uff0c\u5e76\u91cd\u5199\u5b83\u7684handleMessage\u65b9\u6cd5\u5373\u53ef\u3002\u5f53\u6709\u6d88\u606f\u5230\u8fbe\u65f6\uff0chandleMessage\u65b9\u6cd5\u5c31\u4f1a\u88ab\u8c03\u7528\u3002<\/p>\n<p>\u4f8b\u5982\uff1a<\/p>\n<p>&#8220;`<\/p>\n<p>Handler handler = new Handler(){<\/p>\n<p>    @Override<\/p>\n<p>    public void handleMessage(Message msg) {<\/p>\n<p>        \/\/\u5904\u7406\u6d88\u606f<\/p>\n<p>    }<\/p>\n<p>};<\/p>\n<p>&#8220;`<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7sendMessage\u65b9\u6cd5\u5411Handler\u53d1\u9001\u6d88\u606f\uff0c\u4f8b\u5982\uff1a<\/p>\n<p>&#8220;`<\/p>\n<p>Message message = new Message();<\/p>\n<p>message.what = 1;<\/p>\n<p>handler.sendMessage(message);<\/p>\n<p>&#8220;`<\/p>\n<p>3. Handler\u7684\u5c01\u88c5<\/p>\n<p>\u867d\u7136Handler\u7684\u4f7f\u7528\u975e\u5e38\u7b80\u5355\uff0c\u4f46\u662f\u5728\u5b9e<a href=\"https:\/\/www.yimenapp.net\/dabao-3815.html\">ios\u7535\u8111\u5f00\u53d1\u5b89\u5353<\/a>\u9645\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u8fdb\u884c\u4e00\u4e9b\u5c01\u88c5\u6765\u65b9\u4fbf\u4f7f\u7528\u3002\u4e0b\u9762\u5c31\u6765\u4ecb\u7ecd\u4e00\u4e0b\u5982\u4f55\u5c01\u88c5Handler\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2aHandlerCallback\u63a5\u53e3\uff0c\u7528\u6765\u5904\u7406\u6d88\u606f\u3002<\/p>\n<p>&#8220;`<\/p>\n<p>public interface HandlerCallback {<\/p>\n<p>    void handleMessage(Message message);<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>\u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2aHandlerWrapper\u7c7b\uff0c\u7528\u6765\u5c01\u88c5Handler\u5bf9\u8c61\u3002<\/p>\n<p>&#8220;`<\/p>\n<p>public class HandlerWrapper extends Handler {<\/p>\n<p>    private HandlerCallback handlerCallback;<\/p>\n<p>    public HandlerWrapper(HandlerCallback handlerCallback) {<\/p>\n<p>        this.handlerCallback = hand<\/p>\n<p><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.cdn.yimenapp.com\/2023-03\/31\/16\/29731292916.jpg\" \/><\/figure>\n<\/p>\n<p>lerCallback;<\/p>\n<p>    }<\/p>\n<p>    public HandlerWrapper(Looper looper, HandlerCallback handlerCallback) {<\/p>\n<p>        super(looper);<\/p>\n<p>        this.handlerCallback = handlerCallback;<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    public void handleMessage(Message msg) {<\/p>\n<p>        if (handlerCallback != null) {<\/p>\n<p>            handlerCallback.handleMessage(msg);<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>\u8fd9\u4e2a\u7c7b\u7ee7\u627f\u81eaHandler\uff0c\u91cd\u5199\u4e86handleMessage\u65b9\u6cd5\uff0c\u5e76\u4e14\u6dfb\u52a0\u4e86\u4e00\u4e2aHandlerCallback\u63a5\u53e3\u3002<\/p>\n<p>\u6700\u540e\uff0c\u6211\u4eec\u5728\u4f7f\u7528Handler\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7HandlerWrapper\u6765\u8fdb\u884c\u5c01\u88c5\u3002<\/p>\n<p>\u4f8b\u5982\uff1a<\/p>\n<p>&#8220;`<\/p>\n<p>Han<a href=\"https:\/\/www.yimenapp.net\/dabao-4095.html\">android\u7a0b\u5e8f\u6253\u5305<\/a>dlerWrapper handler = new HandlerWrapper(new HandlerCallback() {<\/p>\n<p>    @Override<\/p>\n<p>    public void handleMessage(Message message) {<\/p>\n<p>        \/\/\u5904\u7406\u6d88\u606f<\/p>\n<p>    }<\/p>\n<p>});<\/p>\n<p>&#8220;`<\/p>\n<p>\u8fd9\u6837\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u65b9\u4fbf\u5730\u4f7f\u7528\u5c01\u88c5\u540e\u7684Handler\u4e86\u3002<\/p>\n<p>4. \u603b\u7ed3<\/p>\n<p>\u901a\u8fc7\u5bf9Handler\u7684\u5c01\u88c5\uff0c\u6211\u4eec\u53ef\u4ee5\u65b9\u4fbf\u5730\u5904\u7406\u6d88\u606f\uff0c\u5e76\u4e14\u53ef\u4ee5\u66f4\u597d\u5730\u8fdb\u884c\u7ebf\u7a0b\u95f4\u901a\u4fe1\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u8fdb\u884c\u4e0d\u540c\u7684\u5c01\u88c5\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u3001\u6613\u8bfb\u3001\u6613\u7ef4\u62a4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Android\u4e2d\u7684Handler\u662f\u4e00\u79cd\u6d88\u606f\u673a\u5236\uff0c\u5b83\u662fAndroid\u7cfb\u7edf\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u7ec4\u4ef6\u3002\u5b83\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u7ebf\u7a0b\u4e4b\u95f4\u4f20\u9012\u6d88\u606f\uff0c\u5e76\u4e14\u53ef\u4ee5\u65b9\u4fbf\u5730\u8fdb\u884c\u7ebf\u7a0b\u95f4\u901a\u4fe1\u3002\u5728Android\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u7528\u5230Han<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[6319,2978,3563,962,6320],"class_list":["post-4661","post","type-post","status-publish","format-standard","hentry","category-appshangjia","tag-apk","tag-html5--apk","tag-3563","tag-962","tag-6320"],"_links":{"self":[{"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/posts\/4661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/comments?post=4661"}],"version-history":[{"count":0,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/posts\/4661\/revisions"}],"wp:attachment":[{"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/media?parent=4661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/categories?post=4661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/tags?post=4661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}