Android自定义属性:attr.xml 与 TypedArray

1.attr.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="MyView">
<attr name="textColor" format="color" />
<attr name="textSize" format="dimension" />
</declare-styleable>
</resources>

2.在构造方法中使用

public MyView(Context context,AttributeSet attrs){
super(context,attrs);
mPaint = new Paint(); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.MyView); int textColor = a.getColor(R.styleable.MyView_textColor, 0XFFFFFFFF); //怎么获取:名字_ 属性 连接起来就可以
float textSize = a.getDimension(R.styleable.MyView_textSize, 36); mPaint.setTextSize(textSize);
mPaint.setColor(textColor); a.recycle();
}

3.在布局文件中使用

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:test="http://schemas.android.com/apk/res/com.android.tutor" //自定义属性前缀 与 包名
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" > <com.android.tutor.MyView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
test:textSize="20px"
test:textColor="#fff"/>
</LinearLayout>
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