Android 应用开发：使用 Jq 库解析 JSON 数据

package com.hsjdow.gancm;

import android.os.Bundle; import android.view.View; import android.view.Menu;

import com.google.android.material.snackbar.Snackbar; import com.google.android.material.navigation.NavigationView;

import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; import androidx.drawerlayout.widget.DrawerLayout; import androidx.appcompat.app.AppCompatActivity;

import com.hsjdow.gancm.databinding.ActivityMainBinding; import com.hsjdow.gancm.ui.home.HomeFragment; import android.app.DatePickerDialog; import android.content.DialogInterface; import com.googlecode.jq_android.Jq; import android.util.Log;

public class MainActivity extends AppCompatActivity {

private AppBarConfiguration mAppBarConfiguration;
private ActivityMainBinding binding;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    binding = ActivityMainBinding.inflate(getLayoutInflater());
    setContentView(binding.getRoot());

    setSupportActionBar(binding.appBarMain.toolbar);
    binding.appBarMain.fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            executeJq();
        }
    });
    
    DrawerLayout drawer = binding.drawerLayout;
    NavigationView navigationView = binding.navView;
    
    // Passing each menu ID as a set of Ids because each
    // menu should be considered as top level destinations.
    mAppBarConfiguration = new AppBarConfiguration.Builder(
            R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow)
            .setOpenableLayout(drawer)
            .build();
    
    NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
    NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
    NavigationUI.setupWithNavController(navigationView, navController);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onSupportNavigateUp() {
    NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
    return NavigationUI.navigateUp(navController, mAppBarConfiguration)
            || super.onSupportNavigateUp();
}

private void executeJq() {
    String json = '{"name":"John","age":30,"city":"New York"}';

    Jq jq = new Jq();
    String result = jq.jq('.name').run(json);

    Log.d("Jq Result", result);
}

public void dow_imgone(View view) {
    Snackbar.make(view, '点击了按钮', Snackbar.LENGTH_LONG)
            .setAction('Action', null).show();
}

}