Android studio button onclick new activity

A common task!

To create a button in Android Studio that opens a new activity when clicked, follow these steps:

Step 1: Create a new activity

• Open your Android project in Android Studio.
• Go to File > New > Activity > Empty Activity.
• Name your activity (e.g., SecondActivity) and choose a location to save it.
• Click Finish to create the new activity.

Step 2: Add a button to your main activity

• Open your main activity (e.g., MainActivity) in the Android Studio editor.
• Drag and drop a Button widget from the Palette to your layout.
• Configure the button's properties as desired (e.g., text, size, color).

Step 3: Define the button's onClick listener

• In your main activity's Java code, find the Button widget and add an OnClickListener to it.
• Override the onClick method to start the new activity when the button is clicked.

Here's an example:

// In your main activity's Java code
public class MainActivity extends AppCompatActivity {
    private Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Start the new activity
                Intent intent = new Intent(MainActivity.this, SecondActivity.class);
                startActivity(intent);
            }
        });
    }
}

Step 4: Declare the new activity in your AndroidManifest.xml file

• Open your AndroidManifest.xml file and add the new activity to the manifest.

• Add the following code inside the <application> tag:

  <activity
    android:name=".SecondActivity"
    android:exported="true" />

  Step 5: Run your app

• Click the Run button or press Shift+F10 to run your app on an emulator or physical device.

• Click the button in your app to open the new activity.

That's it! You should now have a button that opens a new activity when clicked.