Java可变参数在Android中的应用（java可变参数原理）

在Android开发中，如果设置N个view的可视性，一般需要写这N句代码：

textView1.setVisibility(visibility);

textView2.setVisibility(visibility);

listView.setVisibility(visibility);

imageView.setVisibility(visibility);

如果我有一个不定参数的函数话：一个函数，可以传0~N个参数

privatevoid setViewVisibility(View... views){

int visibility = shouldVisiable ? View.VISIBLE : View.GONE;

for(View view: views){

view.setVisibility(visibility);

}

}

就可以这么写了：

setViewVisibility(textView1,textView2,listView,imageView);

还可以这么写：

setViewVisibility(textView1,textView2); setViewVisibility(listView,imageView);

还可以这么写：

setViewVisibility(textView1); setViewVisibility(textView2,listView,imageView);

还可以这么写：

setViewVisibility(); setViewVisibility(); setViewVisibility(); setViewVisibility(textView1); setViewVisibility(textView2); setViewVisibility(listView,imageView); setViewVisibility(); setViewVisibility();

就是这么任性~！！