Okgo 与fragment和viewoager以及rablayout联动_okgo和viewgroup绑定-优快云博客

本文链接：https://blog.youkuaiyun.com/Wandering_sea/article/details/102924909

@[toc] Okgo 与fragment和viewoager以及rablayout联动

Activity

package com.example.day05_homework;

import android.Manifest;
import android.os.Build;
import android.support.annotation.Nullable;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.app.ListFragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;

import com.example.day05_homework.fragment.ListviewFragment;
import com.example.day05_homework.fragment.ThreeFragment;
import com.example.day05_homework.fragment.TwoFragment;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "MainActivity";
    private ViewPager viewpager;
    private TabLayout tabl;
    private List<Fragment> list = new ArrayList<>();
    private List<String> lists = new ArrayList<>();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{
                    Manifest.permission.READ_EXTERNAL_STORAGE,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE
            }, 120);
        }

        for (int i = 0; i < 3; i++) {
            lists.add("第" + i + "个fragment");
            Log.d(TAG, "onCreate: 12741123741" + i);
        }


        list.add(new ListviewFragment());
        list.add(new TwoFragment());
        list.add(new ThreeFragment());


        initView();
    }

    private void initView() {
        viewpager = (ViewPager) findViewById(R.id.viewpager);
        tabl = (TabLayout) findViewById(R.id.tabl);

        viewpager.setAdapter(new FragmentStatePagerAdapter(getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int i) {
                return list.get(i);
            }

            @Override
            public int getCount() {
                return list.size();
            }

            @Nullable
            @Override
            public CharSequence getPageTitle(int position) {
                return lists.get(position);
            }
        });
        tabl.setupWithViewPager(viewpager);
        viewpager.setCurrentItem(0);


    }
}

fragment

package com.example.day05_homework.fragment;


import android.app.AlertDialog;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

import com.example.day05_homework.JsonCallBack;
import com.example.day05_homework.R;
import com.example.day05_homework.bean.Food;
import com.lzy.okgo.OkGo;
import com.lzy.okgo.callback.BitmapCallback;
import com.lzy.okgo.callback.FileCallback;
import com.lzy.okgo.callback.StringCallback;
import com.lzy.okgo.model.Response;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

/**
 * A simple {@link Fragment} subclass.
 */
public class ListviewFragment extends Fragment {

    private static final String TAG = "ListviewFragment";

    private ListView listView;
    private MyAdapter adapter;
    private List<Food.DataBean> list = new ArrayList<>();
    private String sd_path = "/storage/emulated/0/Movies/";


    public ListviewFragment() {
        // Required empty public constructor
        OkGo.<Food>get("http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=20&page=1")
                .execute(new JsonCallBack<Food>(Food.class) {
                    @Override
                    public void onSuccess(Response<Food> response) {
                        Food body = response.body();
                        List<Food.DataBean> data = body.getData();
                        list.addAll(data);
                    }
                });

    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // Inflate the layout for this fragment

        Log.d(TAG, "onCreateView: 1234589");
        View inflate = inflater.inflate(R.layout.fragment_listview, container, false);
        listView = inflate.findViewById(R.id.fm_list);
        adapter = new MyAdapter(list, getContext());
        listView.setAdapter(adapter);

        listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, final int position, long id) {

                String sd = sd_path + position + ".jpg";

                final File file = new File(sd);
                if (file.exists()) {
                    Toast.makeText(getContext(), "图片已存在", Toast.LENGTH_SHORT).show();
                } else {
                    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
                    builder.setTitle("友情提示");
                    builder.setMessage("确定要下载图片吗？");
                    builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            OkGo.<File>get(list.get(position).getPic()).execute(new FileCallback(sd_path, position + ".jpg") {
                                @Override
                                public void onSuccess(Response<File> response) {
                                    File body = response.body();
                                }
                            });
                        }
                    });

                    builder.setPositiveButton("Allow", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            OkGo.<File>get(list.get(position).getPic()).execute(new FileCallback(sd_path, position + ".jpg") {
                                @Override
                                public void onSuccess(Response<File> response) {
                                    File body = response.body();
                                }
                            });
                        }
                    });

                    AlertDialog alertDialog = builder.create();
                    alertDialog.show();
                }


                return false;
            }
        });

        Log.d(TAG, "onCreateView: 741852963");
        return inflate;
    }

}


package com.example.day05_homework.fragment;


import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import com.example.day05_homework.R;
import com.lzy.okgo.OkGo;
import com.lzy.okgo.callback.BitmapCallback;
import com.lzy.okgo.callback.FileCallback;
import com.lzy.okgo.model.Response;

import java.io.File;

/**
 * A simple {@link Fragment} subclass.
 */
public class ThreeFragment extends Fragment {

    private ImageView imageView;

    public ThreeFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View inflate = inflater.inflate(R.layout.fragment_three2, container, false);
        imageView = inflate.findViewById(R.id.image_fm);

        String sd_path = "/storage/emulated/0/Pictures/";
        final String path = "/storage/emulated/0/Pictures/pic.jpg";
        File file = new File(path);
        if (file.exists()) {
            Bitmap bitmap = BitmapFactory.decodeFile(path);
            imageView.setImageBitmap(bitmap);
        } else {
            OkGo.<File>get("http://p1.music.126.net/yC_df5u0myXVp-bM99K3Lw==/5870292580832850.jpg").execute(new FileCallback(path, "pic.jpg") {
                @Override
                public void onSuccess(Response<File> response) {
                    File body = response.body();
                    Bitmap bitmap = BitmapFactory.decodeFile(path);
                    imageView.setImageBitmap(bitmap);
                }
            });
        }
        return inflate;
    }

}


package com.example.day05_homework.fragment;


import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.day05_homework.MyImageLator;
import com.example.day05_homework.R;
import com.youth.banner.Banner;

import java.util.ArrayList;
import java.util.List;

/**
 * A simple {@link Fragment} subclass.
 */
public class TwoFragment extends Fragment {

    private List<String> list = new ArrayList<>();

    public TwoFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View inflate = inflater.inflate(R.layout.fragment_two, container, false);
        Banner banner = inflate.findViewById(R.id.fm_banner);
        banner.setImageLoader(new MyImageLator());


        for (int i = 0; i < 3; i++) {
            list.add("http://p1.music.126.net/yC_df5u0myXVp-bM99K3Lw==/5870292580832850.jpg");
        }


        banner.setImages(list);


        banner.start();


        return inflate;
    }

}