In depth parsing of the Android custom property format
- 2020-05-17 06:28:55
- OfStack
1. reference: refer to ID.
(1) property definition:
(2) property use:
2. color: color value.
(1) property definition:
(2) property use:
3. boolean: Boolean value.
(1) property definition:
(2) property use:
4. dimension: size value.
(1) property definition:
(2) property use:
5. float: floating point value.
(1) property definition:
(2) property use:
6. integer: integer value.
(1) property definition:
(2) property use:
7. string: string.
(1) property definition:
(2) property use:
8. fraction: percentage.
(1) property definition:
(2) property use:
9. enum: enumeration values.
(1) property definition:
(2) property use:
10. flag: bit or operation.
(1) property definition:
(2) property use:
Note:
You can specify multiple type values when defining a property.
(1) property definition:
(2) property use:
(1) property definition:
<declare-styleable name = " The name of the ">
<attr name = "background" format = "reference" />
</declare-styleable>
(2) property use:
<ImageView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:background = "@drawable/ The picture ID"
/>
2. color: color value.
(1) property definition:
<declare-styleable name = " The name of the ">
<attr name = "textColor" format = "color" />
</declare-styleable>
(2) property use:
<TextView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:textColor = "#00FF00"
/>
3. boolean: Boolean value.
(1) property definition:
<declare-styleable name = " The name of the ">
<attr name = "focusable" format = "boolean" />
</declare-styleable>
(2) property use:
<Button
android:layout_width = "42dip"
android:layout_height = "42dip"
android:focusable = "true"
/>
4. dimension: size value.
(1) property definition:
<declare-styleable name = " The name of the ">
<attr name = "layout_width" format = "dimension" />
</declare-styleable>
(2) property use:
<Button
android:layout_width = "42dip"
android:layout_height = "42dip"
/>
5. float: floating point value.
(1) property definition:
<declare-styleable name = "AlphaAnimation">
<attr name = "fromAlpha" format = "float" />
<attr name = "toAlpha" format = "float" />
</declare-styleable>
(2) property use:
<alpha
android:fromAlpha = "1.0"
android:toAlpha = "0.7"
/>
6. integer: integer value.
(1) property 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) property use:
<animated-rotate
xmlns:android = "http://schemas.android.com/apk/res/android"
android:drawable = "@drawable/ The picture ID"
android:pivotX = "50%"
android:pivotY = "50%"
android:framesCount = "12"
android:frameDuration = "100"
/>
7. string: string.
(1) property definition:
<declare-styleable name = "MapView">
<attr name = "apiKey" format = "string" />
</declare-styleable>
(2) property 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) property 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) property 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 values.
(1) property definition:
<declare-styleable name=" The name of the ">
<attr name="orientation">
<enum name="horizontal" value="0" />
<enum name="vertical" value="1" />
</attr>
</declare-styleable>
(2) property 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>
10. flag: bit or operation.
(1) property definition:
<ImageView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:background = "@drawable/ The picture ID"
/>
8
(2) property use:
<ImageView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:background = "@drawable/ The picture ID"
/>
9
Note:
You can specify multiple type values when defining a property.
(1) property definition:
<declare-styleable name = " The name of the ">
<attr name = "textColor" format = "color" />
</declare-styleable>
0
(2) property use:
<ImageView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:background = "@drawable/ The picture ID|#00FF00"
/>