{"id":3406,"date":"2024-03-13T06:55:44","date_gmt":"2024-03-13T06:55:44","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-set-the-tools-attribute-in-android\/"},"modified":"2025-07-30T15:47:33","modified_gmt":"2025-07-30T15:47:33","slug":"how-to-set-the-tools-attribute-in-android","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-set-the-tools-attribute-in-android\/","title":{"rendered":"Android Tools Attribute Guide"},"content":{"rendered":"<p>In Android development, the tools attribute is used to assist developers in design time and will not be compiled into the final APK file. Setting the tools attribute can help developers preview and debug layout files.<\/p>\n<p>Commonly used tools properties include:<\/p>\n<ol>\n<li>text processing tools<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">TextView<\/span>\r\n    <span class=\"hljs-attr\">android:id<\/span>=<span class=\"hljs-string\">\"@+id\/textView\"<\/span>\r\n    <span class=\"hljs-attr\">android:layout_width<\/span>=<span class=\"hljs-string\">\"wrap_content\"<\/span>\r\n    <span class=\"hljs-attr\">android:layout_height<\/span>=<span class=\"hljs-string\">\"wrap_content\"<\/span>\r\n    <span class=\"hljs-attr\">tools:text<\/span>=<span class=\"hljs-string\">\"Hello World\"<\/span> \/&gt;<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>list item: tool<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">androidx.recyclerview.widget.RecyclerView<\/span>\r\n    <span class=\"hljs-attr\">android:id<\/span>=<span class=\"hljs-string\">\"@+id\/recyclerView\"<\/span>\r\n    <span class=\"hljs-attr\">android:layout_width<\/span>=<span class=\"hljs-string\">\"match_parent\"<\/span>\r\n    <span class=\"hljs-attr\">android:layout_height<\/span>=<span class=\"hljs-string\">\"match_parent\"<\/span>\r\n    <span class=\"hljs-attr\">tools:listitem<\/span>=<span class=\"hljs-string\">\"@layout\/item_list\"<\/span> \/&gt;<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>source of tools<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">ImageView<\/span>\r\n    <span class=\"hljs-attr\">android:id<\/span>=<span class=\"hljs-string\">\"@+id\/imageView\"<\/span>\r\n    <span class=\"hljs-attr\">android:layout_width<\/span>=<span class=\"hljs-string\">\"wrap_content\"<\/span>\r\n    <span class=\"hljs-attr\">android:layout_height<\/span>=<span class=\"hljs-string\">\"wrap_content\"<\/span>\r\n    <span class=\"hljs-attr\">tools:src<\/span>=<span class=\"hljs-string\">\"@drawable\/sample_image\"<\/span> \/&gt;<\/span>\r\n<\/code><\/pre>\n<p>The method of setting the tools attribute is the same as setting regular attributes, just add the tools prefix to the corresponding control. During compilation, Android Studio will ignore these attributes and only work at design time.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Android development, the tools attribute is used to assist developers in design time and will not be compiled into the final APK file. Setting the tools attribute can help developers preview and debug layout files. Commonly used tools properties include: text processing tools &lt;TextView android:id=&#8221;@+id\/textView&#8221; android:layout_width=&#8221;wrap_content&#8221; android:layout_height=&#8221;wrap_content&#8221; tools:text=&#8221;Hello World&#8221; \/&gt; list item: tool &lt;androidx.recyclerview.widget.RecyclerView [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[13,1587,1589,1588,1586],"class_list":["post-3406","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-android-development","tag-android-layout","tag-android-xml","tag-design-time-attributes","tag-tools-attribute"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Android Tools Attribute Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Master Android&#039;s tools attribute for design-time previews. 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