本文实例分析了Android编程之include文件的使用方法。分享给大家供大家参考,具体如下:
记得很久以前,听一位大神说,程序员都很懒,不懒惰的程序员不是好程序员,当时不明白什么意思.后来慢慢的懂得了它的意思,好的程序员不要做重复的工作.
我们在android的布局文件中,常会遇到一些相同的布局,每个页面都写,一是比较麻烦,二是一旦有修改还得改多个文件.这个时候我们就可以用到include了.
非常简单的使用,下面看代码
include的文件scollandlisttitle.xml
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:orientation = "vertical" > < LinearLayout android:layout_width = "fill_parent" android:layout_height = "wrap_content" android:orientation = "horizontal" android:background = "#000000" > < TextView android:id = "@+id/txt_left_f" android:layout_width = "0dp" android:layout_height = "50dp" android:layout_weight = "1" android:gravity = "center" android:text = "文字" android:clickable = "true" /> < TextView android:id = "@+id/txt_right_f" android:layout_width = "0dp" android:layout_height = "50dp" android:layout_weight = "1" android:gravity = "center" android:text = "图片" android:clickable = "true" /> </ LinearLayout > < View android:id = "@+id/view_line" android:layout_width = "50dp" android:layout_height = "1dp" android:background = "#FF0066" /> </ LinearLayout > |
再看调用它的页面:scollandlistviewpager.xml
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "match_parent" android:orientation = "vertical" android:id = "@+id/vparent_layout" > < com.example.listsuspension.MyScrollView android:id = "@+id/vscrollView" android:layout_width = "match_parent" android:layout_height = "fill_parent" android:fillViewport = "true" > < FrameLayout android:layout_width = "match_parent" android:layout_height = "wrap_content" > < LinearLayout android:layout_width = "match_parent" android:layout_height = "wrap_content" android:orientation = "vertical" > < ImageView android:id = "@+id/viamge" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:background = "@drawable/pic" android:scaleType = "center" /> < include android:id = "@+id/vtitle" layout = "@layout/scollandlisttitle" /> < android.support.v4.view.ViewPager android:id = "@+id/viewpager" android:layout_width = "match_parent" android:layout_height = "fill_parent" /> </ LinearLayout > < include android:id = "@+id/vtop_title" layout = "@layout/scollandlisttitle" /> </ FrameLayout > </ com.example.listsuspension.MyScrollView > </ LinearLayout > |
上述include代码部分就是两个引用.加上之后,是不是就能看到include文件里的内容显示出来了.
这里有一个问题,include里面的控件id是一样的,这怎么办呢.其实很简单,它们是被不同的include所包含,所以在使用findViewById的时候,从包含它的include里面取就行了.下面是代码
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titleLayout = (LinearLayout)findViewById(R.id.vtitle); toptitleLayout = (LinearLayout)findViewById(R.id.vtop_title); //viewPager = (ViewPager)findViewById(R.id.viewpager); //点击按钮事件 txt_left_fc = (TextView)toptitleLayout.findViewById(R.id.txt_left_f); txt_left_fc.setOnClickListener( this ); txt_right_fc = (TextView)toptitleLayout.findViewById(R.id.txt_right_f); txt_right_fc.setOnClickList |
希望本文所述对大家Android程序设计有所帮助。