### opdracht 1 ###
### activity_main.xml ###
<androidx.constraintlayout.widget...>
...
<Button
android:id="@+id/button2"
android:layout_width="180dp"
android:layout_height="50dp"
android:layout_marginTop="60dp"
android:text="1-non-responsive"
app:layout_constraintTop_toBottomOf="@+id/button1"
tools:layout_editor_absoluteX="0dp"
android:onClick="start1_non_responsive"/>
...
</androidx.constraintlayout.widget.ConstraintLayout>
### MainActivity.java ###
public class MainActivity extends AppCompatActivity {
...
public void start1_non_responsive(View view){
Intent browserIntent = new Intent("android.intent.action.VIEW",
Uri.parse("https://dequeuniversity.com/library/responsive/1-non-responsive"));
startActivity(browserIntent);
}
...
}
Download hier het bestand.
### opdracht 2 ###
### activity_main.xml ###
<androidx.constraintlayout.widget...>
...
<Button
android:id="@+id/button3"
android:layout_width="180dp"
android:layout_height="50dp"
android:layout_marginTop="60dp"
android:text="1-responsive"
app:layout_constraintTop_toBottomOf="@+id/button2"
tools:layout_editor_absoluteX="0dp"
android:onClick="start1_responsive"/>
...
</androidx.constraintlayout.widget.ConstraintLayout>
### MainActivity.java ###
public class MainActivity extends AppCompatActivity {
...
public void start1_responsive(View view){
Intent browserIntent = new Intent("android.intent.action.VIEW",
Uri.parse("https://dequeuniversity.com/library/responsive/1-responsive"));
startActivity(browserIntent);
}
...
}
Download hier het bestand.
### opdracht 3 ###
### activity_second.xml ###
<androidx.constraintlayout.widget...>
...
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="56dp"
android:onClick="startMainActivity"
android:text="Naar eerste scherm"
app:layout_constraintTop_toTopOf="parent"
tools:layout_editor_absoluteX="0dp" />
...
</androidx.constraintlayout.widget.ConstraintLayout>
### SecondActivity.java ###
public class SecondActivity extends AppCompatActivity {
...
public void startMainActivity(View view) {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
...
}
Download hier het bestand.
### opdracht 4 ###
### activity_main.xml ###
<androidx.constraintlayout.widget...>
...
<Button
android:id="@+id/button4"
android:layout_width="180dp"
android:layout_height="50dp"
android:layout_marginStart="52dp"
android:onClick="startBellen"
android:text="bel 123"
app:layout_constraintStart_toEndOf="@+id/button1"
tools:layout_editor_absoluteY="0dp" />
...
</androidx.constraintlayout.widget.ConstraintLayout>
### MainActivity.java ###
public class MainActivity extends AppCompatActivity {
...
public void startBellen (View view){
Intent intent = new Intent("android.intent.action.DIAL",
Uri.fromParts("tel", "123", null));
startActivity(intent);
}
...
}
Download hier het bestand.