Android的观点与寻呼机页指示灯 [英] Android view pager with page indicator

问题描述

我需要与图像视图寻呼机文件页面的指标。这是我的code。

I need to get page indicator in the view pager file with images. Here is my code.

public class IndicatorActivity extends Activity {


 /** Called when the activity is first created. */
    @Override

        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);

            MyPagerAdapter adapter = new MyPagerAdapter();
            ViewPager myPager = (ViewPager) findViewById(R.id.pager);
            myPager.setAdapter(adapter);
            myPager.setCurrentItem(0);
            TitlePageIndicator indicator = (TitlePageIndicator)findViewById(R.id.indicat);
            indicator.setViewPager( myPager );
    }
}

在此code，我在 TitlePageIndicator指标得到一个错误=（TitlePageIndicator）findViewById（R.id.indicat）; 为 TitlePageIndicator不能被解析为一个类型。这是什么错误。我怎样才能解决这个问题？

In this code, i got an error in TitlePageIndicator indicator = (TitlePageIndicator)findViewById(R.id.indicat); as TitlePageIndicator cannot be resolved to a type. What is this error. How can I resolve it?

这里是我的XML code：

here is my xml code:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <android.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
         />
    <com.viewpagerindicator.TitlePageIndicator
    android:id="@+id/indicat"
    android:layout_height="wrap_content"
    android:layout_width="fill_parent" />
</LinearLayout>

什么code，我需要在 TitlePageIndicator 写？ 我要做到这一点，而无需使用片段

我还创建了一个类，如：

Me also created a class such as:

class MyPagerAdapter extends PagerAdapter {

     private static Integer[] titles = new Integer[] 
                { 
        R.drawable.jk,R.drawable.lm,R.drawable.no
                };

    public int getCount() {
            return 3;
    }

    public Object instantiateItem(View collection, int position) {

            LayoutInflater inflater = (LayoutInflater) collection.getContext()
                            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View view;
            ImageView iv;

            view = inflater.inflate(R.layout.first, null);

            ((ViewPager) collection).addView(view, 0);
            switch (position) {
            case 0:
                iv = (ImageView)view.findViewById(R.id.imageView1);
                iv.setImageResource(titles[position]);
                    break;
            case 1:
                iv = (ImageView)view.findViewById(R.id.imageView1);
                iv.setImageResource(titles[position]);
                    break;
            case 2:
                 iv = (ImageView)view.findViewById(R.id.imageView1);
                iv.setImageResource(titles[position]);
                    break;
            }
            return view;
    }

    public void destroyItem(View arg0, int arg1, Object arg2) {
            ((ViewPager) arg0).removeView((View) arg2);

    }



    public boolean isViewFromObject(View arg0, Object arg1) {
            return arg0 == ((View) arg1);

    }

}

难道我想要做的比这个类些什么？

Did I want to do anything more than this class?

在此先感谢帮助

推荐答案

下面有几件事情你需要做的：

Here are a few things you need to do:

1，下载库如果你还没有做到这一点。

1-Download the library if you haven't already done that.

2 - 导入到Eclipse中。

2- Import into Eclipse.

3设置你的项目使用的库： 项目 - >属性 - > Android的 - >向下滚动到库部分，点击添加... 的，并选择viewpagerindicator

3- Set you project to use the library: Project-> Properties -> Android -> Scroll down to Library section, click Add... and select viewpagerindicator.

4-现在你应该可以导入 com.viewpagerindicator.TitlePageIndicator 。

4- Now you should be able to import com.viewpagerindicator.TitlePageIndicator.

现在有关实现这一点没有使用片段：

Now about implementing this without using fragments:

在随样品的 viewpagerindicatior 的，你可以看到，该库正在与使用 ViewPager 具有 FragmentPagerAdapter 。

In the sample that comes with viewpagerindicatior, you can see that the library is being used with a ViewPager which has a FragmentPagerAdapter.

但事实上，库本身就是片段独立。它只是需要一个 ViewPager 。 因此，只要使用的 PagerAdapter 代替 FragmentPagerAdapter ，你是好去。

But in fact the library itself is Fragment independant. It just needs a ViewPager. So just use a PagerAdapter instead of a FragmentPagerAdapter and you're good to go.

这篇关于Android的观点与寻呼机页指示灯的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！