#android 引入 okhttp jar包

去到 build.gradle 文件那里 最下面的dependency 改一下

dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'androidx.appcompat:appcompat:1.1.0' implementation 'androidx.constraintlayout:constraintlayout:1.1.3' testImplementation 'junit:junit:4.12' androidTestImplementation 'androidx.test.ext:junit:1.1.1' androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0' implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0' implementation group: 'com.squareup.okhttp3', name: 'okhttp', version: '4.9.0' }

开启网络权限

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.myapplication"> <uses-permission android:name="android.permission.INTERNET"></uses-permission> @Override public void onClick(View v) { switch (v.getId()) { case R.id.btn_clear: { Log.i("click,trigger","设置焦点"); username.setText(""); password.setText(""); username.requestFocus(); break; } case R.id.login: { // saveToLocalXmlSp("result","ok"); WorkerUtil.doWork(() -> { OkHttpClient client = new OkHttpClient(); Request request = new Request.Builder() .url("http://www.itshare.club/api/blog?blogId=16") .get().build(); Call call = client.newCall(request); call.enqueue(new Callback() { @Override public void onFailure(@NotNull Call call, @NotNull IOException e) { } @Override public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException { System.out.println(("res"+ response.body().string() )); } }); }); showToast("登录成功", Toast.LENGTH_LONG); // WorkerUtil.doWork(() -> { // String json = HttpUtil.get("http://www.itshare.club/api/blog?blogId=16"); // Log.i("response",json); // }); // showToast("存储数据结果 ",Toast.LENGTH_LONG); // String value = getFromLocalXmlSp().getString("result",null); // showToast(value,Toast.LENGTH_LONG); // getSharedPreferences("user",MODE_PRIVATE); // jumpPage(this,ContentActivity.class); break; } }