The easiest and easiest way to use the XUtils3 framework

a: initialization

Create a class to inherit Application

public class MyApplication extends Application{

        @Override
        public void onCreate() {
            super.onCreate();
            x.Ext.init(this);
        }
    }

b: Annotation controls are the same as before

@ViewInject (R.id.buton)
    private Button button;

c: click event

@Event(value = R.id.buton)
    private void onclick(View view) {
        Toast.makeText(this, "I was clicked", Toast.LENGTH_SHORT).show();
        httpUtilsPost();
    }

d:post request

<pre name="code" class="java"> private void httpUtilsPost() {
            RequestParams params = new RequestParams(url);
            params.addBodyParameter("key", "value");

            x.http().post(params, new Callback.CacheCallback<String>() {
                @Override
                public boolean onCache(String s) {
                    return false;
                }

                @Override
                public void onSuccess(String result) {
                   
                    textView.setText(result );
                }

                @Override
                public void onError(Throwable throwable, boolean b) {
                    Toast.makeText(x.app(), throwable.getMessage(), Toast.LENGTH_LONG).show();
                }

                @Override
                public void onCancelled (CancelledException e) {
                    Toast.makeText(x.app(), "cancelled", Toast.LENGTH_LONG).show();
                }

                @Override
                public void onFinished() {

                }
            });
    }

e: Finally, don't forget this sentence x.view().inject(this);

For more details, please see the author's documentation https://github.com/wyouflf/xUtils3