{"id":1214,"date":"2012-12-13T17:01:56","date_gmt":"2012-12-13T15:01:56","guid":{"rendered":"http:\/\/examples.javacodegeeks.com\/?p=1214"},"modified":"2013-01-30T19:33:27","modified_gmt":"2013-01-30T17:33:27","slug":"android-textbox-example","status":"publish","type":"post","link":"https:\/\/examples.javacodegeeks.com\/android\/core\/ui\/textbox\/android-textbox-example\/","title":{"rendered":"Android Textbox Example"},"content":{"rendered":"<p>In your Android application, you may want to accept user input. There are many ways you can do that and one of the most basics is the textbox.<\/p>\n<p>In Android you can use the EditText class in order to create a textbox on your screen in which the user will write text. Then, we have to bundle this textbox with a specific key event, so when the user presses the key the application can get the text written in the textbox as an input and perform a specific action.<br \/>\n&nbsp;<br \/>\n&nbsp;<br \/>\n&nbsp;<br \/>\n&nbsp;<br \/>\n&nbsp;<br \/>\nFor this tutorial, we will use the following tools in a Windows 64-bit platform:<\/p>\n<ol>\n<li>JDK 1.7<\/li>\n<li>Eclipse 4.2 Juno<\/li>\n<li>Android SKD 4.2<\/li>\n<\/ol>\n<div>\n<h3>1. Create a new Android Project<\/h3>\n<p>Open Eclipse IDE and go to File -&gt; New -&gt; Project -&gt; Android -&gt; Android Application Project.\u00a0You have to specify the Application Name, the Project Name and the Package name in the appropriate text fields and then click Next.<\/p>\n<p><a href=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-project1.jpg\"><img decoding=\"async\" class=\"alignnone size-full wp-image-1294\" title=\"create-new-project\" src=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-project1.jpg\" alt=\"\" width=\"655\" height=\"446\" srcset=\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-project1.jpg 655w, https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-project1-300x204.jpg 300w\" sizes=\"(max-width: 655px) 100vw, 655px\" \/><\/a><\/p>\n<p>In the next window make sure the \u201cCreate activity\u201d option is selected in order to create a new activity for your project, and click Next. This is optional as you can create a new activity after creating the project, but you can do it all in one step.<\/p>\n<p><a href=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-activity1.jpg\"><img decoding=\"async\" class=\"alignnone size-full wp-image-1295\" title=\"create-new-activity\" src=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-activity1.jpg\" alt=\"\" width=\"654\" height=\"474\" srcset=\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-activity1.jpg 654w, https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-activity1-300x217.jpg 300w\" sizes=\"(max-width: 654px) 100vw, 654px\" \/><\/a><\/p>\n<p>Select \u201cBlankActivity\u201d and click Next.<\/p>\n<p><a href=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-blanc-activity.jpg\"><img decoding=\"async\" title=\"create-blanc-activity\" src=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-blanc-activity.jpg\" alt=\"\" width=\"535\" height=\"485\" \/><\/a><div style=\"display:inline-block; margin: 15px 0;\"> <div id=\"adngin-JavaCodeGeeks_incontent_video-0\" style=\"display:inline-block;\"><\/div> <\/div><\/p>\n<p>You will be asked to specify some information about the new activity. In the Layout Name text field you have to specify the name of the file that will contain the layout description of your app. In our case the file\u00a0<code>res\/layout\/<span style=\"text-decoration: underline;\">main<\/span>.xml<\/code>\u00a0will be created.Then, click Finish.<\/p>\n<p><a href=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-activity-attributes1.jpg\"><img decoding=\"async\" class=\"alignnone size-full wp-image-1297\" title=\"create-new-activity-attributes\" src=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-activity-attributes1.jpg\" alt=\"\" width=\"625\" height=\"452\" srcset=\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-activity-attributes1.jpg 625w, https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/create-new-activity-attributes1-300x216.jpg 300w\" sizes=\"(max-width: 625px) 100vw, 625px\" \/><\/a><\/p>\n<\/div>\n<h3>1. Create an EditText component<\/h3>\n<p>Navigate to\u00a0<code>res\/layout\/main.xml<\/code> file.<\/p>\n<p><a href=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/project-navigator3.jpg\"><img decoding=\"async\" class=\"alignnone size-full wp-image-1298\" title=\"project-navigator\" src=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/project-navigator3.jpg\" alt=\"\" width=\"427\" height=\"466\" srcset=\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/project-navigator3.jpg 427w, https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/project-navigator3-274x300.jpg 274w\" sizes=\"(max-width: 427px) 100vw, 427px\" \/><\/a><\/p>\n<p>Open the <code>main.xml<\/code> file and paste the following code:<\/p>\n<pre class=\"brush:xml\">&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\r\n&lt;LinearLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\r\n    android:layout_width=\"fill_parent\"\r\n    android:layout_height=\"fill_parent\"\r\n    android:orientation=\"vertical\" &gt;\r\n\r\n    &lt;EditText\r\n        android:id=\"@+id\/mytextText\"\r\n        android:layout_width=\"match_parent\"\r\n        android:layout_height=\"wrap_content\" &gt;\r\n\r\n        &lt;requestFocus \/&gt;\r\n\r\n    &lt;\/EditText&gt;\r\n\r\n&lt;\/LinearLayout&gt;<\/pre>\n<h3>2. Set an OnKeyListener\u00a0for the textbox<\/h3>\n<p>Go to the java file of the activity and paste the following code:<\/p>\n<pre class=\"brush:java\">package com.javacodegeeks.android.textboxexample;\r\n\r\nimport android.app.Activity;\r\nimport android.os.Bundle;\r\nimport android.view.KeyEvent;\r\nimport android.view.View;\r\nimport android.view.View.OnKeyListener;\r\nimport android.widget.EditText;\r\nimport android.widget.Toast;\r\n\r\npublic class MainActivity extends Activity {\r\n\r\n private EditText edittext;\r\n\r\n @Override\r\n public void onCreate(Bundle savedInstanceState) {\r\n\tsuper.onCreate(savedInstanceState);\r\n\tsetContentView(R.layout.main);\r\n\r\n\taddKeyListener();\r\n }\r\n\r\n public void addKeyListener() {\r\n\r\n\t\/\/ get edittext component\r\n\tedittext = (EditText) findViewById(R.id.myText);\r\n\r\n\t\/\/ add a keylistener to monitor the keaybord avitvity...\r\n\tedittext.setOnKeyListener(new OnKeyListener() {\r\n\tpublic boolean onKey(View v, int keyCode, KeyEvent event) {\r\n\r\n\t\t\/\/ if the users pressed a button and that button was \"0\"\r\n\t\tif ((event.getAction() == KeyEvent.ACTION_DOWN) &amp;&amp; (keyCode == KeyEvent.KEYCODE_0)) {\r\n\r\n\t\t\t\/\/ display the input text....\r\n\t\t\tToast.makeText(MainActivity.this,edittext.getText(), Toast.LENGTH_LONG).show();\r\n\t\t\treturn true;\r\n\r\n\t    \/\/ if the users pressed a button and that button was \"9\"\r\n\t\t} else if ((event.getAction() == KeyEvent.ACTION_DOWN) \t&amp;&amp; (keyCode == KeyEvent.KEYCODE_9)) {\r\n\r\n\t\t\t\/\/ display message\r\n\t\t\tToast.makeText(MainActivity.this, \"Number 9 is pressed!\", Toast.LENGTH_LONG).show();\r\n\t\t\treturn true;\r\n\t\t}\r\n\r\n\t\treturn false;\r\n\t}\r\n });\r\n}\r\n}<\/pre>\n<p>In the above code, we get the EditText component we created in the <code>main.xml <\/code>file, and we are bundling it with a <code>KeyListener<\/code>. So, when the user presses any key the <code>onKey <\/code>function is executed. In that function usually we put a bunch of if-else if statements that will be taken depending on the key that was pressed.<\/p>\n<h3>3. Run the application<\/h3>\n<p>This is the main screen of our application. You can type some text in the textbox and then press &#8220;0&#8221; :<\/p>\n<p><a href=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/key-action.jpg\"><img decoding=\"async\" class=\"alignnone size-full wp-image-1219\" title=\"key-action\" src=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/key-action.jpg\" alt=\"\" width=\"496\" height=\"892\" srcset=\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/key-action.jpg 496w, https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/key-action-166x300.jpg 166w\" sizes=\"(max-width: 496px) 100vw, 496px\" \/><\/a><\/p>\n<p>Now, if you press &#8220;9&#8221; :<\/p>\n<p><a href=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/number-9-pressed.jpg\"><img decoding=\"async\" class=\"alignnone size-full wp-image-1220\" title=\"number-9-pressed\" src=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/number-9-pressed.jpg\" alt=\"\" width=\"496\" height=\"892\" srcset=\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/number-9-pressed.jpg 496w, https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/number-9-pressed-166x300.jpg 166w\" sizes=\"(max-width: 496px) 100vw, 496px\" \/><\/a><\/p>\n<h3>Download Eclipse Project<\/h3>\n<p>This was an Android TextBox Example. Download the Eclipse Project of this tutorial:\u00a0<a href=\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/AndroidTextBoxExample.zip\">AndroidTextBoxExample.zip<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In your Android application, you may want to accept user input. There are many ways you can do that and one of the most basics is the textbox. In Android you can use the EditText class in order to create a textbox on your screen in which the user will write text. Then, we have &hellip;<\/p>\n","protected":false},"author":7,"featured_media":1202,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[333],"tags":[265,269,267],"class_list":["post-1214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-textbox","tag-android-core","tag-android-textbox","tag-android-ui"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Android Textbox Example<\/title>\n<meta name=\"description\" content=\"In your Android application, you may want to accept user input. There are many ways you can do that and one of the most basics is the textbox. 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