{"id":23416,"date":"2022-11-25T21:56:58","date_gmt":"2022-11-25T16:26:58","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-java-lang-runtimeexception-unable-to-instantiate-activity-componentinfo-in-android-camera-app\/"},"modified":"2022-11-25T21:56:58","modified_gmt":"2022-11-25T16:26:58","slug":"solved-java-lang-runtimeexception-unable-to-instantiate-activity-componentinfo-in-android-camera-app","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-java-lang-runtimeexception-unable-to-instantiate-activity-componentinfo-in-android-camera-app\/","title":{"rendered":"[Solved] java.lang.RuntimeException: Unable to instantiate activity ComponentInfo in android camera app"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-27665745\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"27665745\" data-parentid=\"27656810\" data-score=\"1\" 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<blockquote>\n<pre><code>Caused by: java.lang.NullPointerException\n  at android.app.Activity.findViewById(Activity.java:1794)\n  at firstapp.boysjoys.com.waste.MainActivity.&lt;init&gt;(MainActivity.java:102)\n<\/code><\/pre>\n<\/blockquote>\n<p>You&#8217;re calling <code>findViewById()<\/code> too early, in activity <code>&lt;init&gt;<\/code> phase that includes e.g. member variable initialization.<\/p>\n<p>You can only call activity methods like <code>findViewById()<\/code> in <code>onCreate()<\/code> or later in the activity lifecycle.<\/p>\n<p>Move the <code>findViewById()<\/code> call to <code>onCreate()<\/code> to get rid of the NPE. Put it after <code>setContentView()<\/code> so that it can actually return a non-null value.<\/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 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo in android camera app <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Caused by: java.lang.NullPointerException at android.app.Activity.findViewById(Activity.java:1794) at firstapp.boysjoys.com.waste.MainActivity.&lt;init&gt;(MainActivity.java:102) You&#8217;re calling findViewById() too early, in activity &lt;init&gt; phase that includes e.g. member variable initialization. You can only call activity methods like findViewById() in onCreate() or later in the activity lifecycle. Move the findViewById() call to onCreate() to get rid of the NPE. Put it after setContentView() &#8230; <a title=\"[Solved] java.lang.RuntimeException: Unable to instantiate activity ComponentInfo in android camera app\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-java-lang-runtimeexception-unable-to-instantiate-activity-componentinfo-in-android-camera-app\/\" aria-label=\"More on [Solved] java.lang.RuntimeException: Unable to instantiate activity ComponentInfo in android camera app\">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":[452,1519,323],"class_list":["post-23416","post","type-post","status-publish","format-standard","hentry","category-solved","tag-android","tag-camera","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] java.lang.RuntimeException: Unable to instantiate activity ComponentInfo in android camera app - 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-java-lang-runtimeexception-unable-to-instantiate-activity-componentinfo-in-android-camera-app\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] java.lang.RuntimeException: Unable to instantiate activity ComponentInfo in android camera app - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Caused by: java.lang.NullPointerException at android.app.Activity.findViewById(Activity.java:1794) at firstapp.boysjoys.com.waste.MainActivity.&lt;init&gt;(MainActivity.java:102) You&#8217;re calling findViewById() too early, in activity &lt;init&gt; phase that includes e.g. member variable initialization. You can only call activity methods like findViewById() in onCreate() or later in the activity lifecycle. Move the findViewById() call to onCreate() to get rid of the NPE. Put it after setContentView() ... 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