安卓扩展自定义Viewpage

Question

扩展Viewpage 类，结果得到java.lang.RuntimeException。

Unable to start activity ComponentInfo{com.pindak.sarito/com.pindak.sarito.ui.ws.MagazineReaderActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class com.pindak.sarito.util.HackyViewPager

布局文件：

<?xml version="1.0" encoding="utf-8"?>
<com.pindak.sarito.util.HackyViewPager xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/magazinepager"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" />

onCreate的部分代码：

HackyViewPager pager = (HackyViewPager) findViewById(R.id.magazinepager);

在com.pindak.sarito.util中的HackyViewPager.java

package com.pindak.sarito.util;

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.view.MotionEvent;

public class HackyViewPager extends ViewPager {

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

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        try {
            return super.onInterceptTouchEvent(ev);
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
            return false;
        }
    }

}

不知道为什么会出现这个错误？

Answer 1

你有没有试过添加两者都匹配的构建器？

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

public HackyViewPager(Context context, AttributeSet attrs) {
    super(context, attrs);
}