Page 540 - MDP2020-1

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public void onClick(View view) {
Intent intent = new Intent(MainInma.this, MainFloor9.class);
startActivity(intent);
}

});
button10.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {

Intent intent = new Intent(MainInma.this, MainFloor10.class);
startActivity(intent);
}
});
}
}

[MainActivity.java]
package com.example.inmaapp;

import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;

import android.widget.Button;

public class MainActivity extends AppCompatActivity {
Button button,button2,button3;
@Override

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = findViewById(R.id.button);
button2 = findViewById(R.id.button2);

button3 = findViewById(R.id.button3);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_VIEW,

Uri.parse("https://namu.wiki/w/%EC%9D%B8%EC%B2%9C%EC%A0%84%EC%9E%90%EB%
A7%88%EC%9D%B4%EC%8A%A4%ED%84%B0%EA%B3%A0%EB%93%B1%ED%95%99%E