之前在修改某支付sdk的時候需要用到自定義的對話框,其中用到了setBackground這個方法,由于一開始項目的minSdkVersion高,沒有提示,直到到某部手機上運作時出現了下面這個錯誤:
java.lang.NoSuchMethodError: android.view.View.setBackground
才發現,低版本的sdk沒有這個方法,直接使用setBackgroundDrawable代替。
其實setBackground也是調用了setBackgroundDrawable:
/**
* Set the background to a given Drawable, or remove the background. If the
* background has padding, this View's padding is set to the background's
* padding. However, when a background is removed, this View's padding isn't
* touched. If setting the padding is desired, please use
* {@link #setPadding(int, int, int, int)}.
*
* @param background The Drawable to use as the background, or null to remove the
* background
*/
public void setBackground(Drawable background) {
//noinspection deprecation
setBackgroundDrawable(background);
}
如果不想直接使用setBackgroundDrawable,那麼可以加個判斷:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
XXXXXX.setBackground(null);
} else {
XXXXXX.setBackgroundDrawable(null);
}