关于getResources().getColor()方法过时的替代方法,在Android的6.0以上的编译环境中getColor方法过时了,也就是说以后不建议用这种方式,如果一个方法过时了,应该会有另一种方法来顶替的,接下来就来看看代码吧
getColor()过时过时的源码:
/**
* Returns a color integer associated with a particular resource ID. If the
* resource holds a complex {@link ColorStateList}, then the default color
* from the set is returned.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does
* not exist.
*
* @return A single color value in the form 0xAARRGGBB.
* @deprecated Use {@link #getColor(int, Theme)} instead.
*/
@ColorInt
@Deprecated
public int getColor(@ColorRes int id) throws NotFoundException {
return getColor(id, null);
}
新替代getColor()的源码:
/**
* Returns a color associated with a particular resource ID
* <p>
* Starting in {@link android.os.Build.VERSION_CODES#M}, the returned
* color will be styled for the specified Context's theme.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @return A single color value in the form 0xAARRGGBB.
* @throws android.content.res.Resources.NotFoundException if the given ID
* does not exist.
*/
@ColorInt
public static final int getColor(Context context, @ColorRes int id) {
final int version = Build.VERSION.SDK_INT;
if (version >= 23) {
return ContextCompatApi23.getColor(context, id);
} else {
return context.getResources().getColor(id);
}
}
在新的方法中进行了判断,进行6.0系统的区分,针对于6.0以下还是调用了原来的getColor方法,对于6.0+的使用了新的方法进行替代,这个就不用说了吧,一般的升级都会对老版本进行兼容,具体的使用方法也稍有变化
过时getColor()方法使用:
new TextView(this).setTextColor(getResources().getColor(R.color.white));
新的getColor()方法使用:
new TextView(this).setTextColor(ContextCompat.getColor(this, R.color.white));
最后总结
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
new TextView(this).setTextColor(ContextCompat.getColor(this, R.color.white));
} else {
new TextView(this).setTextColor(getResources().getColor(R.color.white));
}