android-R.styleable(应用)

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在res/values 文件下定义一个attrs.xml 文件

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

布局文件引用：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:cus="http://schemas.android.com/apk/res/com.z.boolattribute"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <!-- com.z.boolattribute 是我们包名 -->    <com.z.boolattribute.CusView        android:layout_width="fill_parent"        android:layout_height="wrap_content"        cus:textColor="#ff00cc"        cus:textSize="20sp" >    </com.z.boolattribute.CusView></LinearLayout>

之定义view

package com.z.boolattribute;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Paint.Style;import android.graphics.Rect;import android.util.AttributeSet;import android.view.View;//com.z.boolattribute.CusViewpublic class CusView extends View {private Paint mPaint;private Context mContext;public CusView(Context context) {super(context);mPaint = new Paint();}public CusView(Context context, AttributeSet attrs) {super(context);mPaint = new Paint();TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.CusView);// 设置默认值int textColor = array.getColor(R.styleable.CusView_textColor, 0Xff00cc);float textSize = array.getDimension(R.styleable.CusView_textSize, 36);mPaint.setTextSize(textSize);mPaint.setColor(textColor);array.recycle();}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);// 设置填充mPaint.setStyle(Style.FILL);// 画一个矩形,前俩个是矩形左上角坐标，后面俩个是右下角坐标canvas.drawRect(new Rect(10, 10, 100, 100), mPaint);mPaint.setColor(Color.BLUE);// 绘制文字canvas.drawText("Look  Me", 10, 120, mPaint);}}

package com.z.boolattribute;import android.app.Activity;import android.os.Bundle;public class TwoActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_two);}}

demo下载

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