Android 自定义属性写法

1、在自定义view里解析

TypedArray ta = context.obtainStyledAttributes(attrs,
R.styleable.ColorTrackView);
mText = ta.getString(R.styleable.ColorTrackView_text);
mTextSize = ta.getDimensionPixelSize(
R.styleable.ColorTrackView_text_size, mTextSize);
mTextOriginColor = ta.getColor(
R.styleable.ColorTrackView_text_origin_color,
mTextOriginColor);
mTextChangeColor = ta.getColor(
R.styleable.ColorTrackView_text_change_color,
mTextChangeColor);
mProgress = ta.getFloat(R.styleable.ColorTrackView_progress, 0);

mDirection = ta.getInt(R.styleable.ColorTrackView_direction, mDirection);

ta.recycle();

2、在attr文件里创建属性：

<?xml version="1.0" encoding="utf-8"?>
<resources>

<attr name="text" format="string" />
<attr name="text_size" format="dimension" />
<attr name="text_origin_color" format="color|reference" />
<attr name="text_change_color" format="color|reference" />
<attr name="progress" format="float" />
<attr name="direction">
<enum name="left" value="0" />
<enum name="right" value="1" />
</attr>

<declare-styleable name="ColorTrackView">
<attr name="text" />
<attr name="text_size" />
<attr name="text_origin_color" />
<attr name="text_change_color" />
<attr name="progress" />
<attr name="direction" />
</declare-styleable>

</resources>

3、使用：在布局文件里添加

xmlns:koo=”http://schemas.android.com/apk/res/com.android.koomama”

com.android.koomama 为项目的包名称

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:koo="http://schemas.android.com/apk/res/com.android.koomama"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<SacleView
koo:text="test"
koo:text_size="12sp"
koo:text_origin_color="#333"
koo:text_change_color="#23ef22"
koo:progress="20"
/>