android - 5大UI设计技巧 - android

1.使用include标签实现包含共享UI设计

（1）创建新的布局文件 title_layout.xml，里面包含共享内容的布局

（2）layout属性：其对应抽取出来的共享的布局内容

< LinearLayout xmlns:android = " http://schemas.android.com/apk/res/android "
android:orientation = " vertical "
android:background = " @drawable/share_background "
android:layout_width = " fill_parent "
android:layout_height = " fill_parent " >
<include layout="@layout/title_layout"></include>
</ LinearLayout > 复制代码

2.使用shapes实现渐变效果

（1）创建新的drawable的xml文件

< shape xmlns:android = " http://schemas.android.com/apk/res/android " android:shape ="rectangle" >
< gradient android:startColor = " #FFFF0000 " android:endColor = " #80FF00FF "
android:angle = " 270 " />
< padding android:left = " 50dp " android:top = " 20dp "
android:right = " 7dp " android:bottom = " 7dp " />
< corners android:radius = " 8dp " />
</ shape > 复制代码 gradient 产生颜色渐变 android:angle 从哪个角度开始变貌似只有90的整数倍可以

android:shape="rectangle" 默认的也是长方形

corners表示是有半径

（还有很多其它参数）

（2）设置android:background属性

android:background = " @drawable/share_background "

3.灵活使用styles.xml

（1）在res/values目录下新建一个style.xml，增加<resource>根节点

<? xml version = " 1.0 " encoding = " utf-8 " ?>
< resources >
< style name="SpecialText" parent = " @style/Text " >
< item name = " android:textSize " > 18sp </ item >
< item name = " android:textColor " > # 008 </ item >
</ style >

< style name="button_style" >
< item name = " android:textStyle " > bold </ item >
< item name = " android:textColor " > #FFFFFFFF </ item >
< item name = " android:layout_width " > 100 .0dip </ item > </style>
</ resources > 复制代码

（2）设置style属性

< EditText id = " @+id/text1 "
style = " @style/SpecialText "
android:layout_width = " fill_parent "
android:layout_height = " wrap_content "
android:text = " Hello, World! " /> 复制代码

现在这个EditText组件的所表现出来的风格就为我们在上边的XML文件中所定义的那样。

（补充：主题（theme)和style一样，也是在style.xml内申明，也是同样方式引用，不同的是通过在 AndroidManifest.xml中定义的<application>和<activity>元素中使用到整个程序或者某个activity，但是主题不能用到某一个单独的view里。）

4.自定义按钮显示效果

（1）在drawable中创建新的xml文件--mybutton.xml文件。

<selector>
< item android:state_window_focused = " false " android:drawable = " @color/transparent " />



< item android:state_focused = " true " android:state_enabled = " false "
android:state_pressed = " true "
android:drawable = " @drawable/selector_background_disabled " />
< item android:state_focused = " true " android:state_enabled = " false "
android:drawable = " @drawable/lselector_background_disabled " />

< item android:state_focused = " true " android:state_pressed = " true "
android:drawable = " @drawable/selector_background_transition " />
< item android:state_focused = " false " android:state_pressed = " true "
android:drawable = " @drawable/selector_background_transition " />

< item android:state_focused = " true "
android:drawable = " @drawable/selector_background_focus " />

</ selector > 复制代码

（2）在构造的layout中引用这个xml

< ImageButton
android:id = " @+id/ImageButton01 "
android:layout_width = " wrap_content "
android:layout_height = " wrap_content "
android:background ="@drawable/mybutton" >
</ ImageButton > 复制代码

5.实现无失真图片拉伸（NinePatch图片处理）

使用draw9patch.bat工具创建 .9.png图片

如：http://www.cnblogs.com/qianxudetianxia/archive/2011/04/17/2017591.html

android - 5大UI设计技巧

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