Android UI design tips-making a gradient background, androidui

Android UI design tips-making a gradient background, androidui
Gradient Production

A few days ago, I suddenly found that QQ's default chat background is changing gradually. Then I learned how to make a background color gradient. Here I will summarize it.
　　
1. Select the upper and lower colors respectively. Here we use black "#000000", gray "# aaaaaa", white "# ffffff".

2. Create a shape in drawable, define the gradient tag, and define three attributes: startstartColor, centerstartColor, and endstartColor. The angle attribute defines the rotation angle. The type attribute defines the Gradient type of the color.

<shape xmlns:android="http://schemas.android.com/apk/res/android">    <gradient        android:angle="90"        android:centerColor="#aaaaaa"        android:endColor="#000000"        android:startColor="#ffffff"        android:type="linear"></gradient></shape>

3. Call it in background.

Type attribute

• Linear property value: solution as shown in. The color on the gradient is linear distribution.
• Radial property value: A gradient from the inside to the outside. When using this property value, you must set the gradientRadius property.

• Sweep property value: this is a bit unclear, it is a bit like a slice gradient, the specific picture will be clearer

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