个人觉得使用自定义控件会给自己的项目加分的但是用不好的话就尽量少点使用使用的熟悉以后再练习使用自定义控件
declare-styleable的使用
declare-styleable是给自定义控件添加自定义属性用的<?xml version="1.0" encoding="utf-8"?>
<resources> <declare-styleable name="TestAttr"> <attr name="name" format="reference" /> <attr name="age"> <flag name="child" value="10" /> <flag name="young" value="18" /> <flag name="oldman" value="60" /> </attr> <attr name="textSize" format="dimension" /> </declare-styleable></resources>
reference指的是是从string.xml引用过来<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:attrstest="http://schemas.android.com/apk/res/com.arlos.attrstest"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >s <com.arlos.attrstest.MyTestView
android:id="@+id/tvTest"
android:layout_width="fill_parent"
android:layout_height="wrap_content" attrstest:name="@string/myname"
android:gravity="top" attrstest:age="young" attrstest:textSize="@dimen/aa"
android:text="@string/hello" /></LinearLayout>
2.1 先引用这个dtdpublic class MyTestView extends TextView {
public MyTestView(Context context, AttributeSet attrs) {
super(context, attrs); TypedArray tArray = context.obtainStyledAttributes(attrs, R.styleable.TestAttr); String name = tArray.getString(R.styleable.TestAttr_name); System.out.println("name = " + name); int age = tArray.getInt(R.styleable.TestAttr_age, 200);
System.out.println("age = " + age); float demin = tArray.getDimension(R.styleable.TestAttr_textSize,0); System.out.println("demin = " + demin); tArray.recycle(); }}