学习安卓小码哥自定义控件的笔记(二)

<?xml version="1.0" encoding="utf-8" ?>
<resources>
    <declare-styleable name="TextFlipperView">
        <attr name="fontColor" format="color"/>
        <attr name="fontSize" format="dimension"/>
    </declare-styleable>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:xmg="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <com.example.wtz.textviewflipper.TextFlipperView
        android:id="@+id/viewFlipper"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        xmg:fontColor="#0f0"
        xmg:fontSize="25sp"></com.example.wtz.textviewflipper.TextFlipperView>

</android.support.constraint.ConstraintLayout>

package com.example.wtz.textviewflipper;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.TextView;
import android.widget.ViewFlipper;

import java.util.ArrayList;

public class TextFlipperView extends ViewFlipper {

    private int mFontColor;
    private float mFontSize;

    public TextFlipperView(Context context) {
        super(context);
    }

    public TextFlipperView(Context context, AttributeSet attrs) {
        super(context, attrs);
        int attributeCount = attrs.getAttributeCount();
        for (int i = 0; i < attributeCount; i++) {
            String attributeName = attrs.getAttributeName(i);
            String attributeValue = attrs.getAttributeValue(i);
            Log.d(getClass().getSimpleName(), "TextFlipperView: attributeName: " + attributeName
                    +" attributeValue: "+attributeValue);
        }
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.TextFlipperView);
        mFontColor = typedArray.getColor(R.styleable.TextFlipperView_fontColor, Color.RED);
        mFontSize = typedArray.getDimension(R.styleable.TextFlipperView_fontSize, 20);
        //释放它,节约资源
        typedArray.recycle();

    }

    //供添加数据
    public void setViews(ArrayList<TextView> views){
        for (int i = 0; i < views.size(); i++) {
            TextView o =  views.get(i);
            //使用刚才获得的自定义属性fontColor fontSize
            o.setTextSize(mFontSize);
            o.setTextColor(mFontColor);
            addView(o);
        }
    }


}