okHttpClient的用法

public class MainActivity extends AppCompatActivity {

    String path="https://www.zhaoapi.cn/ad/getAd";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void getTong(View view) {
        new Thread(){
            @Override
            public void run() {
                super.run();
                OkHttpClient okHttpClient = new OkHttpClient();//创建客户端对象
                Request builder = new Request.Builder()
                        .url(path)//指定访问路径
                        .build();//提交请求
                Call call = okHttpClient.newCall(builder);//用客户端调用请求对象
                //开始执行 ....指定是同步还是异步
                Response execute = null;//同步
                try {
                    execute = call.execute();
                    if(execute.isSuccessful()){//判断是否请求成功
                        final String pp=execute.body().string();
//                        Log.i("jiba","------"+pp);
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                Toast.makeText(MainActivity.this,pp.substring(0,20),Toast.LENGTH_SHORT).show();
                            }
                        });

                    }else{
                        Log.i("jiba","你是sss!");
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }


            }
        }.start();

    }

    public void getYi(View view) {
        OkHttpClient okHttpClient = new OkHttpClient();
        Request builder = new Request.Builder().url(path).build();
        Call call = okHttpClient.newCall(builder);
        call.enqueue(new Callback() {
            //请求错误所走的方法
            @Override
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();//打印错误日志
            }
            //请求成功所走的方法
            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String s = response.body().string();
                Log.i("jiba","======"+s);
            }
        });
    }

    public void postTong(View view) {
        OkHttpClient okHttpClient = new OkHttpClient();
        FormBody formBody = new FormBody.Builder()
                .add("mobile","18360981994")
                .add("password","123456")
                .build();
        Request builder = new Request.Builder()
                .post(formBody)
                .url("https://www.zhaoapi.cn/user/reg")
                .build();
        Call call = okHttpClient.newCall(builder);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                final String string = response.body().string();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(MainActivity.this, string,Toast.LENGTH_SHORT).show();
                    }
                });
            }
        });
    }

    public void postShangchuan(View view) {
        //A.检查用户是否已经允许了权限....PackageManager.PERMISSION_GRANTED代表的是用户已经允许

        if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            //B.不允许...的时候,,,请求用户允许这个权限
            // Activity arg0代表当前的activity, @NonNull String[] arg1请求的权限的数组,也就是需要请求允许哪些权限, int arg2请求码
            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1001);

        }else {
            //允许...上传文件
            postFile();
        }


    }

    private void postFile() {
        OkHttpClient okHttpClient = new OkHttpClient();
        //2.指定文件的类型 image/jpg image/png video/mp4 ...mimeType
        MediaType mediaType = MediaType.parse("text/x-markdown;charset=utf-8");
        //3.指定要上传的文件对象
        File file = new File(Environment.getExternalStorageDirectory(),"wang.txt");
        Request request = new Request.Builder()
                //上传文件的时候请求体使用RequestBody.create()获取okhttp3.MediaType contentType
                // 文件的类型,@NotNull java.io.File file上传的文件对象
                .post(RequestBody.create(mediaType, file))
                .url("https://api.github.com/markdown/raw")
                .build();
        Call call = okHttpClient.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, final Response response) throws IOException {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            Toast.makeText(MainActivity.this,response.body().string(),Toast.LENGTH_SHORT).show();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                });
            }
        });
    }
}

布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent" tools:context="one.bw.com.okhttpqingqiu.MainActivity">

   <Button
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:text="okhttp的get同步"
       android:onClick="getTong"
       />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="okhttp的get异步"
        android:onClick="getYi"
        />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="okhttp的post异步"
        android:onClick="postTong"
        />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="post上传文件"
        android:onClick="postShangchuan"
        />

</LinearLayout>