自定义控件从xml获取属性值的优雅写法
发布时间:2020-12-16 02:19:42 所属栏目:百科 来源:网络整理
导读:public LinearLayoutManager (Context context,AttributeSet attrs, int defStyleAttr, int defStyleRes) { Properties properties = getProperties(context,attrs,defStyleAttr,defStyleRes); setOrientation(properties.orientation); .... } public stati
public LinearLayoutManager(Context context,AttributeSet attrs,int defStyleAttr,int defStyleRes) {
Properties properties = getProperties(context,attrs,defStyleAttr,defStyleRes);
setOrientation(properties.orientation);
....
}
public static Properties getProperties(Context context,int defStyleRes) {
Properties properties = new Properties();
TypedArray a = context.obtainStyledAttributes(attrs,R.styleable.RecyclerView,defStyleRes);
properties.orientation = a.getInt(R.styleable.RecyclerView_android_orientation,VERTICAL);
properties.spanCount = a.getInt(R.styleable.RecyclerView_spanCount,1);
properties.reverseLayout = a.getBoolean(R.styleable.RecyclerView_reverseLayout,false);
properties.stackFromEnd = a.getBoolean(R.styleable.RecyclerView_stackFromEnd,false);
a.recycle();
return properties;
}
public static class Properties {
/** @attr ref android.support.v7.recyclerview.R.styleable#RecyclerView_android_orientation */
public int orientation;
/** @attr ref android.support.v7.recyclerview.R.styleable#RecyclerView_spanCount */
public int spanCount;
/** @attr ref android.support.v7.recyclerview.R.styleable#RecyclerView_reverseLayout */
public boolean reverseLayout;
/** @attr ref android.support.v7.recyclerview.R.styleable#RecyclerView_stackFromEnd */
public boolean stackFromEnd;
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