Android – Set gradient for Android ActionBar

actionbarsherlockandroidandroid-actionbarxml-drawable

I use an ActionBarSherlock library in my app. I also needed to customize the ActionBar, so I added a custom theme with a background parameter set, like this:

<style name="Widget.Styled.ActionBar" parent="Widget.Sherlock.Light.ActionBar.Solid.Inverse">

<item name="background">@drawable/action_bar_bg</item>

<item name="android:background">@drawable/action_bar_bg</item>

</style>

action_bar_bg drawable is simply a bitmap of tiled squares:

<?xml version="1.0" encoding="utf-8"?>

<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
    android:dither="true"
    android:src="@drawable/bg_img_actionbar"
    android:tileMode="repeat" />

What I want to do next is to set a linear gradient for a whole ActionBar, so it will cover this background. And I have no idea if it's possible and how to do that.
Any help would be appreciated.

Best Answer

There is a type of resource for this, Shape Drawable: http://developer.android.com/guide/topics/resources/drawable-resource.html#Shape

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You can force Android to hide the virtual keyboard using the InputMethodManager, calling hideSoftInputFromWindow, passing in the token of the window containing your focused view.

// Check if no view has focus:
View view = this.getCurrentFocus();
if (view != null) {  
    InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}

This will force the keyboard to be hidden in all situations. In some cases, you will want to pass in InputMethodManager.HIDE_IMPLICIT_ONLY as the second parameter to ensure you only hide the keyboard when the user didn't explicitly force it to appear (by holding down the menu).

Note: If you want to do this in Kotlin, use: context?.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager

Kotlin Syntax

// Only runs if there is a view that is currently focused
this.currentFocus?.let { view ->
    val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
    imm?.hideSoftInputFromWindow(view.windowToken, 0)
}

Android – How to stop EditText from gaining focus at Activity startup in Android

Excellent answers from Luc and Mark. However, a good code sample is missing. Adding the tags android:focusableInTouchMode="true" and android:focusable="true" to the parent layout (e.g. LinearLayout or ConstraintLayout) like in the following example, will fix the problem.

<!-- Dummy item to prevent AutoCompleteTextView from receiving focus -->
<LinearLayout
    android:focusable="true" 
    android:focusableInTouchMode="true"
    android:layout_width="0px" 
    android:layout_height="0px"/>

<!-- :nextFocusUp and :nextFocusLeft have been set to the id of this component
to prevent the dummy from receiving focus again -->
<AutoCompleteTextView android:id="@+id/autotext"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:nextFocusUp="@id/autotext" 
    android:nextFocusLeft="@id/autotext"/>

Best Answer

Related Solutions

Android – How to close/hide the Android soft keyboard programmatically

Android – How to stop EditText from gaining focus at Activity startup in Android

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