android - 在 android 应用程序中设置标题栏渐变

Question

我想在我的应用程序标题栏上设置一个渐变（从#F55B53到#FFFF00），使用以下代码：

GradientDrawable gd = new GradientDrawable(GradientDrawable.Orientation.TOP_BOTTOM, new int[] {0xF55B53,0xFFFF00});
View title = getWindow().findViewById(android.R.id.title);
View titleBar = (View) title.getParent();
titleBar.setBackgroundDrawable(gd);

但日食告诉我：

类型视图中的方法 setBackgroundDrawable(Drawable) 已弃用

我该做什么？

Answer 1

Most of the time you get a deprecation warning, it comes along with the correct way of doing it. If you go to the View class documentation, you will notice that the setBackgroundDrawable(Drawable background) method says:

This method was deprecated in API level 16. use setBackground(Drawable) instead

Depending on the android version you are targeting you might want to continue using the deprecated one.

Answer 2

titleBar.setBackgroundDrawable(gd);

更改代码

int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
    setBackgroundDrawable()
} else {
    setBackground();
}