1.自定义属性需要用xml文件添加：
在res/values下面添加attrs.xml文件
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="JustEditText">
<attr name="ic_delete" format="reference" />
<attr name="delete_x" format="integer" />
<attr name="delete_y" format="integer" />
<attr name="delete_width" format="integer" />
<attr name="delete_height" format="integer" />
<attr name="ic_left_click" format="reference" />
<attr name="ic_left_unclick" format="reference" />
<attr name="left_x" format="integer" />
<attr name="left_y" format="integer" />
<attr name="left_width" format="integer" />
<attr name="left_height" format="integer" />
<attr name="lineColor_click" format="color" />
<attr name="lineColor_unclick" format="color" />
<attr name="linePosition" format="integer" />
<attr name="cursor" format="reference" />
</declare-styleable>
</resources>
2.代码里面引用资源文件
TypedArray typedArray = context.obtainStyledAttributes(attrs,R.styleable.JustEditText);
float textSize = typedArray.getDimension(R.styleable.JustEditText_delete_height,30);
int textColor = typedArray.getColor(R.styleable.JustEditText_lineColor_click, ContextCompat.getColor(context,R.color.colorAccent1));
//用完之后回收
typedArray.recycle();
3.自定义属性格式详解：
- reference:参考某一资源ID，可以获得资源ID对象
- 属性定义：
<declare-styleable name = "名称">
<attr name = "background" format = "reference" />
</declare-styleable>
- 使用如下：
<ImageView
android:layout_width = "3dp"
android:layout_height = "3dp"
android:background = "@drawable/图片ID"
/>
2.color:颜色值
- 属性定义：
<declare-styleable name = "名称">
<attr name = "textColor" format = "color" />
</declare-styleable>
- 属性使用：
<TextView
android:layout_width = "4dp"
android:layout_height = "4dp"
android:textColor = "#57caa1"
/>
3.boolean:布尔值
- 定义：
<declare-styleable name = "名称">
<attr name = "focusable" format = "boolean" />
</declare-styleable>
- 使用：
<Button
android:layout_width = "42dp"
android:layout_height = "42dp"
android:focusable = "true"
/>
4.dimension：尺寸值，获得属性值之后，将dp转化为px
- 定义：
<declare-styleable name = "名称">
<attr name = "layout_width" format = "dimension" />
</declare-styleable>
- 使用：
<Button
android:layout_width = "42dp"
android:layout_height = "42dp"
/>
5.float：浮点值,很少用一般都是integer
- 定义：
<declare-styleable name = "AlphaAnimation">
<attr name = "fromAlpha" format = "float" />
<attr name = "toAlpha" format = "float" />
</declare-styleable>
- 使用：
<alpha
android:fromAlpha = "1.0"
android:toAlpha = "0.7"
/>
6.integer:整型值
- 定义：
<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>
- 使用：
<animated-rotate
xmlns:android = "[http://schemas.android.com/apk/res/android]
android:drawable = "@drawable/图片ID"
android:pivotX = "50%"
android:pivotY = "50%"
android:framesCount = "12"
android:frameDuration = "100"
/>
- string：字符串
- 定义：
<declare-styleable name = "MapView">
<attr name = "apiKey" format = "string" />
</declare-styleable>
- 使用：
<MapView
android:layout_width = "fill_parent"
android:layout_height = "fill_parent"
android:apiKey = "0jOkQ80oD1JL9C6HAja99uGXCRiS2CGjKO_bc_g"
/>
8.fraction：百分数
- 定义：
<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>
- 使用：
<rotate
android:interpolator = "@anim/动画ID"
android:fromDegrees = "0"
android:toDegrees = "360"
android:pivotX = "200%"
android:pivotY = "300%"
android:duration = "5000"
android:repeatMode = "restart"
android:repeatCount = "infinite"
/>
9.enum：枚举值
- 定义：
<declare-styleable name="名称">
<attr name="orientation">
<enum name="horizontal" value="0" />
<enum name="vertical" value="1" />
</attr>
</declare-styleable>
- 使用：
<LinearLayout
xmlns:android = "[http://schemas.android.com/apk/res/android](http://schemas.android.com/apk/res/android)"
android:orientation = "vertical"
android:layout_width = "fill_parent"
android:layout_height = "fill_parent">
</LinearLayout>
10.flag:位或运算
- 定义：
<declare-styleable name="名称">
<attr name="windowSoftInputMode">
<flag name = "stateUnspecified" value = "0" />
<flag name = "stateUnchanged" value = "1" />
<flag name = "stateHidden" 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" />
<flag name = "adjustNothing" value = "0x30" />
</attr>
</declare-styleable>
- 用法：
<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>
属性定义时可以制定多种类型：
<declare-styleable name = "名称">
<attr name = "background" format = "reference|color" />
</declare-styleable>
使用：
<ImageView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:background = "@drawable/图片ID|#00FF00"
/>
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