Java-Android Stuidio（续）

Posted 2021-07-03 怪歌

Java-android

PhaseTwo（Android）

okgo

okhttp的封装 简易版Okhttp
这里继承了上一个项目中的BaseActivity，如果不明白的点下面的链接，并打开PhaseTwo（Android）
上一期的Java-Android.

package com.bawei.zhuangao2.day3;


import android.Manifest;
import android.annotation.SuppressLint;
import android.graphics.BitmapFactory;
import android.view.View;
import android.widget.ImageView;

import com.bawei.zhuangao2.R;
import com.bawei.zhuangao2.day1.HeadInterceptor;
import com.bawei.zhuangao2.day2.base.BaseActivity;
import com.blankj.utilcode.util.LogUtils;
import com.blankj.utilcode.util.PermissionUtils;
import com.lzy.okgo.OkGo;
import com.lzy.okgo.cache.CacheMode;
import com.lzy.okgo.callback.FileCallback;
import com.lzy.okgo.callback.StringCallback;
import com.lzy.okgo.model.Response;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.File;
import java.util.concurrent.TimeUnit;

import okhttp3.OkHttpClient;
import okhttp3.logging.HttpLoggingInterceptor;
//一样继承于BaseActivity
public class OkGoActivity extends BaseActivity {
    //用于下载图片展示
    private ImageView coverIv;

    /**
     * 绑定主要视图
     * @return
     */
    @Override
    public int bandLayout() {
        return R.layout.activity_okhttp;
    }

    /**
     * 初始化控件 并设置点击事件
     */
    @Override
    public void initView() {
        //获取隐私权限（这里隐私权限指的是：手机联系人，读写SD卡，手机信息等等）
        //这里获取了写入SD卡的权限
        PermissionUtils.permission(Manifest.permission.WRITE_EXTERNAL_STORAGE).request();

        findViewById(R.id.btn1).setOnClickListener(this);
        findViewById(R.id.btn2).setOnClickListener(this);
        findViewById(R.id.btn3).setOnClickListener(this);
        findViewById(R.id.btn4).setOnClickListener(this);
        findViewById(R.id.btn5).setOnClickListener(this);
        findViewById(R.id.btn6).setOnClickListener(this);
        coverIv = findViewById(R.id.image);
    }


    @Override
    public void initData() {

    }

    /**
     * 点击事件
     * @param v
     */
    @SuppressLint("NonConstantResourceId")
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btn1:
                //Get方式获取
                OkGo.<String>get("https://gank.io/api/v2/banners").execute(new StringCallback() {
                    @Override
                    public void onSuccess(Response<String> response) {
                        //对Response 做了解析
                        //这里还是异步线程
                        LogUtils.d(response.body());
                    }
                    @Override
                    public void onCacheSuccess(Response<String> response) {
                        super.onCacheSuccess(response);
                        LogUtils.d("onCacheSuccess" + response.body());
                    }
                });

                break;
            case R.id.btn2:
                //Post Json 通过upJson("")提交代码
                JSONObject jsonObject = new JSONObject();
                try {
                    jsonObject.put("username", "1234567");
                    jsonObject.put("pwd", "123456");
                    jsonObject.put("sex", "1");
                    jsonObject.put("birthday", "2000-9-9");
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                OkGo.<String>post("http://39.98.153.96:8082/api/WeekTest/register")
                        .upJson(jsonObject.toString()).execute(new StringCallback() {
                    @Override
                    public void onSuccess(Response<String> response) {
                        //Response 对做了解析
                        //这里还是异步线程
                        LogUtils.d(response.body());
                    }
                });
                break;
            case R.id.btn3:
                //Post From
                //username=1903001&pwd=123456
                OkGo.<String>post("http://39.98.153.96:8082/api/WeekTest/login?username=1903001&pwd=123456")
                        .params("username", "1903001")
                        .params("pwd", "123456")
                        .execute(new StringCallback() {
                            @Override
                            public void onSuccess(Response<String> response) {
                                //Response 对做了解析
                                //这里还是异步线程
                                LogUtils.d(response.body());
                            }
                        });
                break;
            case R.id.btn4:
                //下载
                OkGo.<File>get("https://pic.downk.cc/item/5e7b64fd504f4bcb040fae8f.jpg").execute(new FileCallback() {
                    @Override
                    public void onSuccess(final Response<File> response) {
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                LogUtils.d(response.body().getPath());
                                coverIv.setImageBitmap(BitmapFactory.decodeFile(response.body().getPath()));
                            }
                        });
                    }
                });
                break;
            case R.id.btn5:

                break;
            case R.id.btn6:
                //文件上传
                File file = new File("/storage/emulated/0/download/1382400000b859e1c2339");
                coverIv.setImageBitmap(BitmapFactory.decodeFile(file.getPath()));
                OkGo.<String>post("http://117.51.155.210/hfs/")
                        //发送格式为file
                        .params("file",file)
                        //分段发送
                        .isMultipart(true)
                        .execute(new StringCallback() {
                            @Override
                            public void onSuccess(Response<String> response) {
                                LogUtils.d(response.body());
                            }
                        });
                break;
        }
    }
}

Glide工具

认识Glide
Glide是一个图片加载框架，功能强大，一般用于一些视图显示图片，从url中加载图片等等，也可以进行裁剪图片，达到视觉美观

Glide方法类

/**
 * 单例 双重校验 双重锁
 */
public class ImageManger {

    public void showImage(String url, ImageView view){
        Glide.with(Utils.getApp()).load(url)
                //关闭缓存
                .skipMemoryCache(true)
                //关闭磁盘缓存
                .diskCacheStrategy(DiskCacheStrategy.NONE)
                //加载过程显示
                .placeholder(R.mipmap.ic_launcher)
                //加载失败显示
                .error(R.mipmap.ic_launcher)
                .into(view);
    }

    public void showR(String url, ImageView view,int radius){
        Glide.with(Utils.getApp()).load(url)
                .transform(new RoundedCorners(radius))
                //加载过程显示
                .placeholder(R.mipmap.ic_launcher)
                //加载失败显示
                .error(R.mipmap.ic_launcher)
                .into(view);
    }

    public void showC(String url, ImageView view){
        Glide.with(Utils.getApp()).load(url)
                //圆形
                .circleCrop()
                .into(view);
    }

    //多线程可见
    private static volatile ImageManger imageManger;

    //饿汉式单例
    public static ImageManger getInstance(){
        if (imageManger==null){
            //这里上锁
            synchronized (ImageManger.class){
                if (imageManger==null){
                    imageManger=new ImageManger();
                }
            }
        }
        return imageManger;
    }
}

Activity类

public class GlideActivity extends BaseActivity {
    private android.widget.ImageView actGlideIv01;
    private android.widget.ImageView actGlideIv02;
    private android.widget.ImageView actGlideIv03;

    //初始化主视图
    @Override
    public int bandLayout() {
        return R.layout.activity_glide;
    }

    //初始化控件
    @Override
    public void initView() {

        actGlideIv01 = findViewById(R.id.act_glide_iv_01);
        actGlideIv02 = findViewById(R.id.act_glide_iv_02);
        actGlideIv03 = findViewById(R.id.act_glide_iv_03);
    }

    //加载数据（显示图片）
    @Override
    public void initData() {
        //实例化调用方法 完成Glide加载
        ImageManger imageManger = new ImageManger();
        imageManger.showImage("https://pic.downk.cc/item/5e7b64fd504f4bcb040fae8f.jpg",actGlideIv01);
        imageManger.showC("https://pic.downk.cc/item/5e7b64fd504f4bcb040fae8f.jpg",actGlideIv02);
        imageManger.showR("https://pic.downk.cc/item/5e7b64fd504f4bcb040fae8f.jpg",actGlideIv03,50);

    }
}