Android Viewpager（带有自定义工具栏）

我使用UIL使用viewpager查看图像。 我有一个自定义工具栏线性布局的全屏活动。 单击屏幕时，linearlayout工具栏将不可见。 但当我滚动到下一页时，线性布局再次可见。 如上图所示， 例如，我单击了page2，工具栏将可见， 但当我切换页面时，工具栏仍然存在。 我正在创建一个类似facebook的图像查看器

软件包com.thesis.juandirection.picasso

import android.content.Context;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.Toast;

import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.FailReason;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
import com.nostra13.universalimageloader.core.listener.SimpleImageLoadingListener;


import java.util.ArrayList;


/**
 * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
 */
public class ImagePagerFragment extends BaseFragment {

    public static final int INDEX = 2;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fr_image_pager, container, false);
        ViewPager pager = (ViewPager) rootView.findViewById(R.id.pager);

        pager.setAdapter(new ImageAdapter(getActivity()));
        pager.setCurrentItem(getArguments().getInt(Constants.Extra.IMAGE_POSITION, 0));


        return rootView;
    }

    private static class ImageAdapter extends PagerAdapter {
        ArrayList<String> IMAGE_URLS = new ArrayList<>();
        private LayoutInflater inflater;
        private DisplayImageOptions options;
         LinearLayout linearLayout;
        ImageAdapter(Context context) {
            inflater = LayoutInflater.from(context);

            options = new DisplayImageOptions.Builder()
                    .resetViewBeforeLoading(true)
                    .cacheOnDisk(true)
                    .imageScaleType(ImageScaleType.EXACTLY)
                    .bitmapConfig(Bitmap.Config.RGB_565)
                    .considerExifParams(true)
                    .displayer(new FadeInBitmapDisplayer(300))
                    .build();
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {

             container.removeView((View) object);

        }

        @Override
        public int getCount() {
            return Constants.IMAGES.size();
            //return 0;
        }

        @Override
        public Object instantiateItem(ViewGroup view, int position) {
            Log.e("Constants", "" + Constants.closed);
            IMAGE_URLS = (ArrayList<String>) Constants.IMAGES.clone();
            View imageLayout = inflater.inflate(R.layout.item_pager_image, view, false);
            linearLayout= (LinearLayout) imageLayout.findViewById(R.id.layoutHide);
            imageLayout.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (linearLayout.getVisibility() == View.VISIBLE) {
                        linearLayout.setVisibility(View.INVISIBLE);

                    } else {
                        linearLayout.setVisibility(View.VISIBLE);

                    }
                }
            });

            assert imageLayout != null;
            ImageView imageView = (ImageView) imageLayout.findViewById(R.id.image);
            final ProgressBar spinner = (ProgressBar) imageLayout.findViewById(R.id.loading);
            ImageLoader.getInstance().displayImage(IMAGE_URLS.get(position), imageView, options, new SimpleImageLoadingListener() {
                @Override
                public void onLoadingStarted(String imageUri, View view) {
                    spinner.setVisibility(View.VISIBLE);

                }
                @Override
                public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
                    String message = null;
                    switch (failReason.getType()) {
                        case IO_ERROR:
                            message = "Input/Output error";
                            break;
                        case DECODING_ERROR:
                            message = "Image can't be decoded";
                            break;
                        case NETWORK_DENIED:
                            message = "Downloads are denied";
                            break;
                        case OUT_OF_MEMORY:
                            message = "Out Of Memory error";
                            break;
                        case UNKNOWN:
                            message = "Unknown error";
                            break;
                    }
                    Toast.makeText(view.getContext(), message, Toast.LENGTH_SHORT).show();
                    spinner.setVisibility(View.GONE);
                }

                @Override
                public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
                    spinner.setVisibility(View.GONE);
                }
            });
            view.addView(imageLayout, 0);
            return imageLayout;
        }

        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view.equals(object);
        }

        @Override
        public void restoreState(Parcelable state, ClassLoader loader) {
        }

        @Override
        public Parcelable saveState() {
            return null;
        }



    }
}

XML文件

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#000"
    android:clickable="true"
    android:padding="1dip">



    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:adjustViewBounds="true" />

    <ProgressBar
        android:id="@+id/loading"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:visibility="gone" />

    <LinearLayout
        android:id="@+id/layoutHide"
        android:layout_width="match_parent"
        android:layout_height="?android:attr/actionBarSize"
        android:clickable="true"
        android:background="@drawable/bg"
        android:orientation="horizontal"></LinearLayout>
</FrameLayout>

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在xml中添加工具栏的代码在哪里？我的工具栏是Linearlayout。。ID为layoutHide的。我使线性布局看起来像工具栏。我找不到任何工具栏名称。如果要使用工具栏，应在styles.xml和要显示工具栏的布局中使用Light.Theme.NoActionBar，在这里，您必须编写类似的内容，然后在活动中绑定此工具栏。如果您仍然不确定，请回复。对不起，我知道我不包括工具栏小部件。我所做的是做一个看起来像工具栏的线性布局。