{"id":22988,"date":"2022-11-22T23:13:44","date_gmt":"2022-11-22T17:43:44","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-starting-a-thread-closes-my-android-application\/"},"modified":"2022-11-22T23:13:44","modified_gmt":"2022-11-22T17:43:44","slug":"solved-starting-a-thread-closes-my-android-application","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-starting-a-thread-closes-my-android-application\/","title":{"rendered":"[Solved] Starting a thread closes my android application"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-42777712\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"42777712\" data-parentid=\"42777414\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>The thing is you can not access Ui element in a non-Ui thread. So you must be getting a Runtime exception. You can use runOnUi() or a Handler to do it on Main Thread  . Where runOnUi() is a method of Activity class and A Handler allows you to send and process Message and Runnable objects associated with a thread&#8217;s MessageQueue. <\/p>\n<pre><code>runOnUiThread(new Runnable() {\n        @Override\n        public void run() {\n            Toast.makeText(ActivityMain.this,\"Message\",Toast.LENGTH_LONG).show();\n        }\n    });\n<\/code><\/pre>\n<p>Or you can Use Handler<\/p>\n<pre><code> new Handler().post(new Runnable() {\n        @Override\n        public void run() {\n            Toast.makeText(ActivityMain.this,\"Message\",Toast.LENGTH_LONG).show();\n        }\n    });\n<\/code><\/pre>\n<p>Just make sure that when you create a new Handler, it is bound to the thread \/ message queue of the thread that is creating it. So you must not create it inside non Ui thread .<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Starting a thread closes my android application <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] The thing is you can not access Ui element in a non-Ui thread. So you must be getting a Runtime exception. You can use runOnUi() or a Handler to do it on Main Thread . Where runOnUi() is a method of Activity class and A Handler allows you to send and process Message and &#8230; <a title=\"[Solved] Starting a thread closes my android application\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-starting-a-thread-closes-my-android-application\/\" aria-label=\"More on [Solved] Starting a thread closes my android application\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[452,323,884,1143,4993],"class_list":["post-22988","post","type-post","status-publish","format-standard","hentry","category-solved","tag-android","tag-java","tag-multithreading","tag-runnable","tag-sleep"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Starting a thread closes my android application - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-starting-a-thread-closes-my-android-application\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Starting a thread closes my android application - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] The thing is you can not access Ui element in a non-Ui thread. 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