Android学习 -- photoGallery应用的创建方法

今天的任务为创建photogallery应用，代码如下：

photogalleryactivity.java:

package com.example.a49840.photogallery;

import android.support.v4.app.fragment;

public class photogalleryactivity extends singlefragmentactivity {

    @override
    protected fragment createfragment() {
        return photogalleryfragment.newinstance();
    }
}

fragment_photo_gallery.xml:

phtotgalleryfragment.java:

package com.example.a49840.photogallery;

import android.os.asynctask;
import android.os.bundle;
import android.support.v4.app.fragment;
import android.support.v7.widget.gridlayoutmanager;
import android.support.v7.widget.recyclerview;
import android.view.layoutinflater;
import android.view.view;
import android.view.viewgroup;
import android.widget.textview;

import java.util.arraylist;
import java.util.list;


public class photogalleryfragment extends fragment {
    private recyclerview mphotorecyclerview;

    public static photogalleryfragment newinstance() {
        return new photogalleryfragment();
    }

    @override
    public void oncreate(bundle savedinstancestate) {
        super.oncreate(savedinstancestate);
        setretaininstance(true);
    }

    @override
    public view oncreateview(layoutinflater inflater, viewgroup container,
                             bundle savedinstancestate) {
        view v = inflater.inflate(r.layout.fragment_photo_gallery, container, false);

        mphotorecyclerview = (recyclerview) v.findviewbyid(r.id.photo_recycler_view);
        mphotorecyclerview.setlayoutmanager(new gridlayoutmanager(getactivity(), 3));

        return v;
    }
}