和的setBackground之间差

和的setBackground之间差

本文介绍了setBackgroundDrawable()和的setBackground之间差()的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我刚刚升级我的Andr​​oid项目的建设目标为17 API,而我现在获取有关pcated setBackgroundDrawable感德$ P $警告。答案似乎是使用的setBackground,但是这不是在旧版本可用。

有任何实际的优势,使用新的方法,还是谷歌只是想改名字?我没有看到任何一点与平台版本检查或反射,如果两项工作是一样的。

复杂我code
解决方案

他们似乎只想要改名字,看<一href="http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.1.1_r1/android/view/View.java#View.setBackground%28android.graphics.drawable.Drawable%29"相对=nofollow>来源$ C ​​$ C :

 公共无效的setBackground(可绘制背景){
    // noinspection德precation
    setBackgroundDrawable(背景);
}

pcated @德$ P $
公共无效setBackgroundDrawable(可绘制背景){...}
 

所有的工作都在 setBackgroundDrawable仍在进行()。现在,你可以忽略去precation警告,但明白,在未来的API setBackgroundDrawable()将被移除。


如果你很好奇,<一个href="http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.1.1_r1/android/view/View.java#View.setBackgroundResource%28int%29"相对=nofollow> setBackgroundResource(INT渣油) 简单的创建从资源ID和呼叫的setBackground()被拉伸(而这又要求 setBackgroundDrawable()

I just upgraded my Android project's build target to API 17, and I'm now getting warnings about setBackgroundDrawable being deprecated. The answer appears to be to use setBackground, but that's not available in older versions.

Is there any actual advantage to using the new method, or did Google just want to change the name? I don't see any point in complicating my code with platform version checks or reflection if the two work the same.

解决方案

They seemed to only want to change the name, look at the source code:

public void setBackground(Drawable background) {
    //noinspection deprecation
    setBackgroundDrawable(background);
}

@Deprecated
public void setBackgroundDrawable(Drawable background) { ... }

All of the work is still done in setBackgroundDrawable(). For now, you can ignore the deprecation warnings but understand that in some future API setBackgroundDrawable() will be removed.


In case you are curious, setBackgroundResource(int resid) simply creates a drawable from the resource ID and calls setBackground() (which again calls setBackgroundDrawable())...

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08-15 00:46