okgo+glide

最新推荐文章于 2021-05-26 12:08:37 发布

原创最新推荐文章于 2021-05-26 12:08:37 发布 · 180 阅读

CC 4.0 BY-SA版权

笔记

okgo 一位大佬在okHttp的基础上将其中的方法封装，成为了更简单方法共使用者调用
glide 用于下载网络图片，拥有三级缓存、图片压缩等等的强大功能，可以设置圆角，可以设置占位符图片（图片加载中），设置请求错误图片（网络请求失败，网络断开连接）

代码部分

MainActivity

package com.example.work;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;

import com.example.work.fragment.FirstFragment;
import com.example.work.fragment.SecondFragment;
import com.example.work.fragment.ThirdFragment;

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

public class MainActivity extends AppCompatActivity {

    private TabLayout tabLayout;
    public static ViewPager viewPager;
    private List<Fragment> fragmentList = new ArrayList<>();
    private List<String> nameList = 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){
            String[] str = {Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE};
            requestPermissions(str,100);
        }else{
            initView();
            initData();
        }
        
        
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if(requestCode == 100 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
            initView();
            initData();
        }else{
            finish();
        }
    }

    private void initData() {
        fragmentList.add(new FirstFragment());
        fragmentList.add(new SecondFragment());
        fragmentList.add(new ThirdFragment());

        for (int i = 0; i < fragmentList.size(); i++) {
            nameList.add("第"+i+"个");
        }

        viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int i) {
                return fragmentList.get(i);
            }

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

            @Nullable
            @Override
            public CharSequence getPageTitle(int position) {
                return nameList.get(position);
            }
        });

        tabLayout.setupWithViewPager(viewPager);
    }

    private void initView() {
        tabLayout = findViewById(R.id.tab_layout);
        viewPager = findViewById(R.id.view_pager);


    }
}

第一个碎片

package com.example.work.fragment;


import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Environment;
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.work.R;
import com.example.work.adapter.FoodAdapter;
import com.example.work.callback.JsonCallBack;
import com.example.work.javabean.FoodBean;
import com.lzy.okgo.OkGo;
import com.lzy.okgo.callback.FileCallback;
import com.lzy.okgo.callback.StringCallback;
import com.lzy.okgo.model.Progress;
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 FirstFragment extends Fragment {

    private String path = "http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=10&page=1";
    private ListView listFirstView;
    private List<FoodBean.DataBean> foodList;
    private List<String> nameList = new ArrayList<>();

    private FoodAdapter adapter;
    //下载路径
    private File load_path = null;
    public FirstFragment() {
        // 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_frist, container, false);
        initView(inflate);

        OkGo.<FoodBean>get(path).execute(new JsonCallBack<FoodBean>(FoodBean.class) {
            @Override
            public void onSuccess(Response<FoodBean> response) {
                FoodBean body = response.body();
                foodList = body.getData();
                adapter = new FoodAdapter(foodList,getContext());
                for (int i = 0; i < foodList.size(); i++) {
                    nameList.add("image"+i+".jpg");
                }

                listFirstView.setAdapter(adapter);

                listViewListener();
            }
        });

        return inflate;
    }

    private void listViewListener() {

        listFirstView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
                AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
                builder.setMessage("是否要下载该图片?");
                builder.setTitle("提示信息");

                builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        download(position);
                    }
                });

                builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });

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

        listFirstView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, final int position, long id) {
                AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
                builder.setMessage("是否要上传该图片?");
                builder.setTitle("提示信息");

                builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        upload(position);
                    }
                });

                builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });

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

    }
    private String upload_url = "http://169.254.207.164/hfs/";
    private void upload(int position) {
        if(load_path == null){
            Toast.makeText(getContext(),"您还有没下载该图片！", Toast.LENGTH_SHORT).show();
            return;
        }
        OkGo.<String>post(upload_url)
                .params(nameList.get(position),load_path)
                .execute(new StringCallback() {
                    @Override
                    public void onSuccess(Response<String> response) {
                        Toast.makeText(getContext(), "上传成功！", Toast.LENGTH_SHORT).show();
                    }
                    @Override
                    public void onError(Response<String> response) {
                        Toast.makeText(getContext(), "上传失败"+response.getException().getMessage(), Toast.LENGTH_SHORT).show();
                    }
                });




    }

    private void download(final int position) {
//        File directory = Environment.getExternalStorageDirectory();
//        File file = new File("/sdcard/", nameList.get(position));
//        if(load_path != null) {
//            if (load_path.exists()) {
//                Toast.makeText(getContext(), "文件已存在，无需下载！", Toast.LENGTH_SHORT).show();
//                return;
//            }
//        }

        OkGo.<File>get(foodList.get(position).getPic())
                .execute(new FileCallback() {
                    @Override
                    public void onSuccess(Response<File> response) {

                        String absolutePath = response.body().getAbsolutePath();
                        load_path = new File(absolutePath);
                        Toast.makeText(getContext(), "下载成功！"+absolutePath, Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onError(Response<File> response) {
                        Toast.makeText(getContext(), "下载失败！"+response.getException().getMessage(), Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void downloadProgress(Progress progress) {
                        Log.i("---", "downloadProgress: "+progress.fraction);
                    }
                });

    }

    private void initView(View inflate) {
        listFirstView = inflate.findViewById(R.id.list_first_view);
    }
}

第四个碎片

package com.example.work.fragment;


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.work.R;
import com.example.work.imageloader.MyImageLoad;
import com.youth.banner.Banner;
import com.youth.banner.listener.OnBannerListener;

import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;

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


    private Banner bannerSecond;
    private String[] image = {"http://www.qubaobei.com/ios/cf/uploadfile/132/31/30630.jpg",
            "http://www.qubaobei.com/ios/cf/uploadfile132/10/9073.jpg",
            "http://www.qubaobei.com/ios/cf/uploadfile/132/3/2166.jpg"};

    private List<String> image_List = new ArrayList<>();
    private ImageView imagePicSecond;

    public SecondFragment() {
        // 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_second, container, false);
        initView(inflate);

        image_List.add("http://www.qubaobei.com/ios/cf/uploadfile/132/31/30630.jpg");
        image_List.add("http://www.qubaobei.com/ios/cf/uploadfile132/10/9073.jpg");
        image_List.add("http://www.qubaobei.com/ios/cf/uploadfile/132/3/2166.jpg");

        MyImageLoad myImageLoad = new MyImageLoad();

        bannerSecond.setImages(image_List);
        bannerSecond.setImageLoader(myImageLoad);
        bannerSecond.start();

        return inflate;
    }

    private void initView(View inflate) {
        bannerSecond = inflate.findViewById(R.id.banner_second);
        imagePicSecond = inflate.findViewById(R.id.image_pic_second);
    }
}

第三个碎片

package com.example.work.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 android.widget.Toast;

import com.example.work.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 ThirdFragment extends Fragment {

    private String load_url = null;
    private ImageView imagePicThird;
    private String download_url = "http://www.qubaobei.com/ios/cf/uploadfile132/10/9073.jpg";
    public ThirdFragment() {
        // 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_third, container, false);
        initView(inflate);

        if (load_url != null) {
            File file = new File(load_url);
            Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
            imagePicThird.setImageBitmap(bitmap);
        } else {
            OkGo.<Bitmap>get(download_url)
                    .execute(new BitmapCallback() {
                        @Override
                        public void onSuccess(Response<Bitmap> response) {
                            Bitmap bitmap = response.body();
                            imagePicThird.setImageBitmap(bitmap);
                        }

                        @Override
                        public void onError(Response<Bitmap> response) {
                            Toast.makeText(getContext(), ""+response.getException().getMessage(), Toast.LENGTH_SHORT).show();
                        }
                    });
        }
        return inflate;
    }

    private void initView(View inflate) {
        imagePicThird = inflate.findViewById(R.id.image_pic_third);
    }
}

自己封装的AbsCallBack

package com.example.work.callback;

import com.google.gson.Gson;
import com.lzy.okgo.callback.AbsCallback;

import okhttp3.Response;
import okhttp3.ResponseBody;

public abstract class JsonCallBack<T> extends AbsCallback<T> {

    private Class<T> tClass;

    public JsonCallBack(Class<T> tClass) {
        this.tClass = tClass;
    }

    @Override
    public T convertResponse(Response response) throws Throwable {

        ResponseBody body = response.body();
        if(body == null){
            return null;
        }
        String string = body.string();
        Gson gson = new Gson();
        if(string == null){
            return null;
        }
        T t = gson.fromJson(string, tClass);

        return t;
    }
}