There are many tutorials out there and questions on SO that implement custom title bars. However, in my custom title bar I have a custom gradient for the background and I would like to know how to set it dynamically in my code.
Here is where my custom title bar gets called:
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.foo_layout); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title_bar);
And this is my custom_title_bar
:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@layout/custom_title_bar_background_colors"> <ImageView android:layout_width="fill_parent" android:layout_height="wrap_content" android:src="@drawable/title_bar_logo" android:gravity="center_horizontal" android:paddingTop="0dip"/> </LinearLayout>
As you can see, the background on the linear layout is defined by this guy:
<shape xmlns:android="http://schemas.android.com/apk/res/android"> <gradient android:startColor="#616261" android:endColor="#131313" android:angle="270" /> <corners android:radius="0dp" /> </shape>
What I would like to do is set those gradient colors dynamically in my code. I do not want to hard code them in my XML file like they currently are.
I am open to all ideas if you have a better way of setting a background gradient.
Thank you in advance!!
Just as you can declare the background of an element to be a solid color in CSS, you can also declare that background to be a gradient.
To do this in code, you create a GradientDrawable.
The only chance to set the angle and color is in the constructor. If you want to change the color or angle, just create a new GradientDrawable and set it as the background
View layout = findViewById(R.id.mainlayout); GradientDrawable gd = new GradientDrawable( GradientDrawable.Orientation.TOP_BOTTOM, new int[] {0xFF616261,0xFF131313}); gd.setCornerRadius(0f); layout.setBackgroundDrawable(gd);
For this to work, I added an id to your main LinearLayout as follows
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/mainlayout" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ImageView android:layout_width="fill_parent" android:layout_height="wrap_content" android:src="@drawable/title_bar_logo" android:gravity="center_horizontal" android:paddingTop="0dip"/> </LinearLayout>
And to use this as for a custom title bar
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,R.layout.custom_title_bar); View title = getWindow().findViewById(R.id.mainlayout); title.setBackgroundDrawable(gd);
If accepted answer is not working, you can try to set foreground
.
color.setForeground(gradient);
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