docs: add AsyncTask demo for ABSDK login

docs/examples/LoginAsyncTaskDemo.java

@@ -0,0 +1,92 @@
+// AsyncTask用法的Demo
+package tr.dhee.abox.demo.ui.login;
+
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.os.Process;
+import android.view.View;
+import android.widget.Button;
+
+import androidx.activity.ComponentActivity;
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+import com.dhc.absdk.ABRet;
+import com.dhc.absdk.ABSDK;
+
+import java.lang.reflect.Parameter;
+
+import tr.dhee.abox.demo.R;
+
+public class MainActivity extends AppCompatActivity {
+
+    Button buttonLoginABox;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_main);
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
+            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
+            return insets;
+        });
+
+        buttonLoginABox = findViewById(R.id.buttonLoginAbox);
+
+        buttonLoginABox.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                //使用aboxSDK里面的芳芳
+                ABRet abRet = ABSDK.getInstance().loginWithUsername("a", "a");
+
+//替换成如下写法
+                String[] userArray = {"", ""};
+
+                LoginAsyncTask loginAsyncTask = new LoginAsyncTask();
+                loginAsyncTask.execute(userArray);
+            }
+        });
+
+
+    }
+
+     class LoginAsyncTask extends AsyncTask<String, Void, ABRet> {
+        @Override
+        protected ABRet doInBackground(String... params) {
+            return ABSDK.getInstance().loginWithUsername(params[0], params[1]);
+        }
+
+        @Override
+        protected void onPostExecute(ABRet abRet) {
+            super.onPostExecute(abRet);
+            if (abRet.getCode().equals("00000")) {
+
+                //跳转到设备列表页面
+            }
+        }
+    }
+
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+