简单的问题,为什么发生这种情况?无法解析符号(字符串)
import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import com.maxiesnax.gavinisms2.gavinisms2.R;
public class GavinFragment extends Fragment {
;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_gavin, container,
false);
// Inflate the layout for this fragment
return rootView;
final MediaPlayer aahMP = MediaPlayer.create(getActivity(), R.raw.aaah);
Button play_aaah = (Button) getActivity().findViewById(R.id.play_ahhh);
play_aaah.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
aahMP.start();
}
});
}
}
这是我的包含aah.mp3按钮的Fragment的代码。错误发生在
(R.id.play_ahhh);
特别是play_ahhh,它已经在XML中定义了。
<resources>
<string name="app_name">Gavinisms</string>
<string name="navigation_drawer_open">Open navigation drawer</string>
<string name="navigation_drawer_close">Close navigation drawer</string>
<string name="action_settings">Settings</string>
<string name="play_ahhh">Ahhh"</string>
<!-- TODO: Remove or change this placeholder text -->
<string name="hello_blank_fragment">Hello blank fragment</string>
</resources>
'play_ahhh',就像你定义的那样,它将在'R.string'中,而不是'R.id'。这就是为什么你得到“无法解析符号”错误。但是您没有在您设置的文本中找到“视图”。你可以通过他们的ID找到他们;即,您在布局中设置的'android:id'属性的值。 –