我正在處理項目,並且出現標識符錯誤。我不知道如何解決這個問題。它在第五行。謝謝您的幫助! :)標識符預期混淆
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.RelativeLayout;
public class Activity extends AppCompatActivity {
public void clickFunction (RelativeLayout) {
RelativeLayout theRelativeLayout = (RelativeLayout)findViewById(R.id.backgroundfirst);
theRelativeLayout.setBackgroundResource(R.drawable.backgroundsecond);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_);
}
}
謝謝!真的很感謝幫助! :) – cschmidt