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App Inventor 2 DynamicComponents 拓展:动态创建AI2组件对象 · App Inventor 2 中文网

...不将其保存到已创建的组件列表中,因此它不会关联到 ID。请注意,你无法直接在 Screen 中创建组件,你需要事先在 Screen 中设置布局才能执行此操作。 将已创建组件的 ID...
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Focusable EditText inside ListView

...ed by the adapter, or added as a header view) that contains an EditText widget and a Button . All I want to do is be able to use the jogball/arrows, to navigate the selector to individual items like normal, but when I get to a particular row -- even if I have to explicitly identify the row -- th...
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How do I pass multiple attributes into an Angular.js attribute directive?

... scope.callback(); // calls exampleCallback() } }; }); fiddle If the value of attribute example-number will be hard-coded, I suggest using $eval once, and storing the value. Variable num will have the correct type (a number). ...
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Toggle button using two image on different state

... Do this: <ToggleButton android:id="@+id/toggle" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/check" <!--check.xml--> android:layout_margin="10dp" a...
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Long-lasting FB access-token for server to pull FB page info

...hat does not expire (with help from @Igy), here is a clear, step-by-step quide for all those looking to the same: Make sure you are the admin of the FB page you wish to pull info from Create a FB App (should be with the same user account that is the page admin) Head over to the Facebook Graph API ...
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EditText, clear focus on touch outside

...eives focus and the on-screen keyboard pops up. When I click somewhere outside of the EditText , it still has the focus (it shouldn't). I guess I could set up OnTouchListener 's on the other views in layout and manually clear the EditText 's focus. But seems too hackish... ...
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How to find elements with 'value=x'?

...').filter(function(){return this.value=='123'}).remove(); demo http://jsfiddle.net/gaby/RcwXh/2/ share | improve this answer | follow | ...
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How to remove constraints from my MySQL table?

...I got to solve with this code: ALTER TABLE `table_name` DROP FOREIGN KEY `id_name_fk`; ALTER TABLE `table_name` DROP INDEX `id_name_fk`; share | improve this answer | foll...
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What is the best way to detect a mobile device?

...ead of using jQuery you can use simple JavaScript to detect it: if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ) { // some code.. } Or you can combine them both to make it more accessible through jQuery... $.browser.device = (/android|webos|iphone...
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How do I find out if the GPS of an Android device is enabled

On an Android Cupcake (1.5) enabled device, how do I check and activate the GPS? 10 Answers ...