I have 2 flavors - paidapp and freeapp.
The only difference that paidapp have 1 more button on MainActivity
, say "paidbutton"
.
paidapp has its own layout with button android:id="@+id/paidbutton"
and layout for freeapp does not have this button.
In code I use this:
if (BuildConfig.FLAVOR.equals("paidapp")) {
View paidbutton = findViewById(R.id.paidbutton);
paidbutton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//...
}
});
}
But I have an error cannot find symbol variable
in findViewById(R.id.paidbutton);
How to solve this problem without cloning MainActivity.java in both flavors?
EDIT1 - add more code examples:
Gradle:
productFlavors {
paidapp {
}
freeapp {
}
}
/app/src/main/res/layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/goNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Go next" />
</LinearLayout>
/app/src/paidapp/res/layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/goNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Go next" />
<Button
android:id="@+id/paidbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="See more" />
</LinearLayout>
/app/src/main/java/company/com/myapplication/MainActivity.java
package company.com.myapplication;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
View goNext = findViewById(R.id.goNext);
goNext.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "goNext click", Toast.LENGTH_SHORT).show();
}
});
if (BuildConfig.FLAVOR.equals("paidapp")) {
View paidbutton = findViewById(R.id.paidbutton);
paidbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "paidapp click", Toast.LENGTH_SHORT).show();
}
});
}
}
}
EDIT2 - I have found some workaround using reflection, but still looking for normal solution:
instead of View paidbutton = findViewById(R.id.paidbutton);
I have used View paidbutton = findViewById(getIdFromRId("paidbutton"));
where getIdFromRId
is:
private int getIdFromRId(String idName) {
int id = 0;
try {
Class c = R.id.class;
Field field = c.getField(idName);
id = field.getInt(null);
} catch (Exception e) {
// do nothing
}
return id;
}