package com.example.test;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.material.bottomnavigation.BottomNavigationView;
import androidx.appcompat.app.AppCompatActivity;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;
public class MainActivity extends AppCompatActivity {
private ImageButton Ib_1;
private ImageButton Ib_2;
private ImageButton Ib_3;
private ImageButton Ib_4;
private ImageButton Ib_5;
private ImageButton Ib_6;
@Override
protected void onCreate(Bundle savedInstanceState) {
getSupportActionBar().hide();
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BottomNavigationView navView = findViewById(R.id.nav_view);
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
NavigationUI.setupWithNavController(navView, navController);
Ib_1=(ImageButton) findViewById(R.id.imageButton);
Ib_1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
System.out.println("Hello");
}
});
}
}
其实就是想给ImageBox加一个点击事件,不知道为什么无法启动,是我写的有问题吗,请大神指教。