Category: Android

  • Device Definitions in Android SDK Tools Rev.21

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    Luca Zanini
    in

    In the last release of Android SDK Tools Rev.21 I found a nice surprise: now there are some device and configurations for the emulator.

  • Saving the position of a ScrollView inside a Fragment

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    Luca Zanini
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    I thought of writing a post about how to save the position of a ScrollView when I read the Bhavin’s comment in the post Tab Layout in Android with ActionBar and Fragment. Bhavin asked how one could restore the position of a scrollview switching between a tab and the other.

  • The merge tag

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    Luca Zanini
    in

    The merge tag allows you to avoid an unnecessary use of nested layouts when you use the include tag.

  • Tabs and swipe views

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    Luca Zanini
    in

    In the post Tab Layout in Android with ActionBar and Fragment I explain how to implement tabs and in the post Swipe views I explain how to implement the swipe views or scrolling tabs using the ViewPager of the Compatibility Package. In this post I explain how to implement 3 tabs that look like those…

  • Swipe views

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    Luca Zanini
    in

    In a previous post I implemented a layout with 2 tabs using an action bar and fragments; the disadvantage of this layout is that dragging horizzontally the views in a similar way to Google Play would be very natural for the user. In Horizontal View Swiping with ViewPager you can see how to get this…

  • Quickly switch between the code for the emulator to the code for the real device

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    Luca Zanini
    in

    In a previous post I explained the differences between the code for the emulator and the code for the real device, but the switch from one to another and vice versa is very cumbersome.In this post I propose a way to switch quickly from one situation to another with few changes.The specific code for the…

  • Android XML Editor cannot process this input

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    Luca Zanini
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    If you open an XML document in Eclipse and you get the error “Android XML Editor can not process this input”, you can solve it by opening the preferences (Window menu -> Preferences) and select General -> Editors -> File Associations, highlight *.xml , and choose XM Editor as default editor, and then no more…

  • gimp-android-xdpi

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    Luca Zanini
    in

    I found this very useful plugin for gimp, called gimp-android-xdpi, that allows you to easily create images with the desired dimensions in the directories drawable-ldpi, drawable-mdpi, drawable-hdpi and drawable-xhdpi of an Android project, following the guidelines explained on Icon Design Guidelines and links therein.

  • The differences between the code for the emulator and the code for a real device

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    by

    Luca Zanini
    in

    The Android developers can use Sensor Simulator to test their applications, in particular when they use sensors such as accelerometer or compass. In this post I explain the differences in the code for an activity that runs on the emulator or a real device, and I don’t discuss how to install or launch the emulator,…