"Reprint" Android attr custom tags in detail

Original link: http://blog.sina.com.cn/s/blog_62ef2f14010105vi.html; only the layout is optimized for easier reading

<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
xmlns:wen=http://schemas.android.com/apk/res/com.iteye.googlers
android:orientation= "vertical" android:layout_width= "fill_parent"
android:layout_height= "Wrap_content" >

The second line is a custom label.

Format as above, where the "Xmlns:wen" Colon is followed by a label name, when used below (only available for the current file)

<textview Wen: Property name/>

"Com.iteye.googlers" is the name of your project package.

1. Reference: Refer to a resource ID.

(1) Attribute definition:
<declare-styleable name = "Names" >
<attr name = "Background" format = "Reference"/>
</declare-styleable>
(2) attribute use:
<imageview
Android:layout_width = "42dip"
Android:layout_height = "42dip"
Android:background = "@drawable/Picture ID"
/>

2. Color: Colour value.

(1) Attribute definition:
<declare-styleable name = "Names" >
<attr name = "TextColor" format = "Color"/>
</declare-styleable>
(2) attribute use:
<textview
Android:layout_width = "42dip"
Android:layout_height = "42dip"
Android:textcolor = "#00FF00"
/>

3. Boolean: Boolean value.

(1) Attribute definition:
<declare-styleable name = "Names" >
<attr name = "focusable" format = "Boolean"/>
</declare-styleable>
(2) attribute use:
<button
Android:layout_width = "42dip"
Android:layout_height = "42dip"
Android:focusable = "true"
/>

4. Dimension: Dimension value.

(1) Attribute definition:
<declare-styleable name = "Names" >
<attr name = "layout_width" format = "Dimension"/>
</declare-styleable>
(2) attribute use:
<button
Android:layout_width = "42dip"
Android:layout_height = "42dip"
/>

5. Float: floating-point value.

(1) Attribute definition:
<declare-styleable name = "Alphaanimation" >
<attr name = "Fromalpha" format = "float"/>
<attr name = "Toalpha" format = "float"/>
</declare-styleable>
(2) attribute use:
<alpha
Android:fromalpha = "1.0"
Android:toalpha = "0.7"
/>

6. Integer: Integer value.

(1) Attribute definition:
<declare-styleable name = "Animatedrotatedrawable" >
<attr name = "visible"/>
<attr name = "frameduration" format= "integer"/>
<attr name = "Framescount" format= "integer"/>
<attr name = "Pivotx"/>
<attr name = "Pivoty"/>
<attr name = "Drawable"/>
</declare-styleable>
(2) attribute use:
<animated-rotate
xmlns:android = "Http://schemas.android.com/apk/res/android"
android:drawable = "@drawable/Picture ID"
Android:pivotx = "50%"
Android:pivoty = "50%"
Android:framescount = "12"
android:frameduration = "100"
/>

7. String: Strings.

(1) Attribute definition:
<declare-styleable name = "Mapview" >
<attr name = "ApiKey" format = "string"/>
</declare-styleable>
(2) attribute use:
<com.google.android.maps.mapview
Android:layout_width = "Fill_parent"
Android:layout_height = "Fill_parent"
Android:apikey = "0jokq80od1jl9c6haja99ugxcris2cgjko_bc_g"
/>

8. Fraction: percentage.

(1) Attribute definition:
<declare-styleable name= "Rotatedrawable" >
<attr name = "visible"/>
<attr name = "fromdegrees" format = "float"/>
<attr name = "todegrees" format = "float"/>
<attr name = "Pivotx" format = "fraction"/>
<attr name = "Pivoty" format = "fraction"/>
<attr name = "Drawable"/>
</declare-styleable>

(2) attribute use:
<rotate
xmlns:android = "Http://schemas.android.com/apk/res/android"
Android:interpolator = "@anim/animation ID"
Android:fromdegrees = "0"
Android:todegrees = "360"
Android:pivotx = "200%"
Android:pivoty = "300%"
android:duration = "5000"
Android:repeatmode = "Restart"
Android:repeatcount = "Infinite"
/>

9. Enum: enumeration value.

(1) Attribute definition:
<declare-styleable name= "Name" >
<attr name= "Orientation" >
<enum name= "Horizontal" value= "0"/>
<enum name= "Vertical" value= "1"/>
</attr>
</declare-styleable>
(2) attribute use:
<linearlayout
xmlns:android = "Http://schemas.android.com/apk/res/android"
Android:orientation = "vertical"
Android:layout_width = "Fill_parent"
Android:layout_height = "Fill_parent"
>
</LinearLayout>

Flag: Bit or operation.

(1) attribute definition:
<declare-styleable name= "name";
<attr name= "Windowsoftinputmode";
<flag Name = "Stateunspecified" value = "0"/>
<flag name = "stateunchanged" value = "1"/>
<flag name = "St Atehidden "value =" 2 "/>
<flag name =" Statealwayshidden "value =" 3 "/>
<flag name =" Statevisible " Value = "4"/>
<flag name = "Statealwaysvisible" value = "5"/>
<flag name = "Adjustunspecified" value = "0x00"/>
<flag name = "Adjustresize" value = "0x10"/>
<flag name = "Adjustpan" value = "0x20"/&G T
<flag name = "adjustnothing" value = "0x30"/>
</attr>
</declare-styleable>

(2) attribute use:
<activity
Android:name = ". Styleandthemeactivity "
Android:label = "@string/app_name"
Android:windowsoftinputmode = "Stateunspecified |　stateunchanged | Statehidden ">
<intent-filter>
<action android:name = "Android.intent.action.MAIN"/>
<category android:name = "Android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>

Tips: You can specify multiple types of values when you define a property.

(1) Attribute definition:
<declare-styleable name = "Names" >
<attr name = "Background" format = "Reference|color"/>
</declare-styleable>
(2) attribute use:
<imageview
Android:layout_width = "42dip"
Android:layout_height = "42dip"
Android:background = "@drawable/Picture id| #00FF00"
/>

"Reprint" Android attr custom tags in detail