1장. URL 버튼 만들기

1. URL 버튼 만들기

1-1. activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:text="Button 1" />

    <Button
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:layout_weight="10"
        android:text="Button 2" />
    
    <!-- 임의로 넣은 코드 --!>
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:text="Go to Naver" 
        app:layout_contraintStart_toStartOf=”parent”
        app:layout_contraintTop_toTopOf=”parent” />
</LinearLayout>

 

1-2. MainActivity.java

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button urlButton = findViewById(R.id.button);

        // 버튼 액션 추가
        urlButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                Intent urlIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://naver.com"));
                startActivity(urlIntent);
            }
        });
    }
}