我在 fragment 中的 onClicklistener 方面遇到了一些问题。如果我点击按钮什么也不会发生。我既没有从 Logcat 中的 onClicklistener 收到消息,屏幕上也没有出现 Toast,但我在代码中找不到错误。有什么想法吗?
如果有任何帮助,我将不胜感激!多谢!抱歉我的英语不好
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.Button;
import android.widget.Toast;
import android.util.Log;
public class InputFragment extends Fragment
{
EditText input_text;
String text;
Button translate_button;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View InputFragmentView = inflater.inflate(R.layout.input_fgmt, container, false);
input_text = (EditText) InputFragmentView.findViewById(R.id.input_field);
translate_button = (Button) InputFragmentView.findViewById(R.id.translate);
translate_button.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View view)
{
Log.d("Test", "onClickListener ist gestartet");
Toast.makeText(getActivity().getApplicationContext(), "Test", Toast.LENGTH_LONG).show();
saveInString();
}
});
return inflater.inflate(R.layout.input_fgmt, container, false);
}
public void saveInString()
{
if(text.equals(null))
{
Toast.makeText(getActivity().getApplicationContext(), "Das Feld ist leer!", Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getActivity().getApplicationContext(), "Speichern...", Toast.LENGTH_LONG).show();
text = input_text.getText().toString();
Toast.makeText(getActivity().getApplicationContext(), "Fertig", Toast.LENGTH_SHORT).show();
}
}
}
最佳答案
我认为问题出在您的代码中
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
.....
....
//problem is here below line
return inflater.inflate(R.layout.input_fgmt, container, false);
}
返回已经膨胀的 View
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View inputFragmentView = inflater.inflate(R.layout.input_fgmt, container, false);
.....
....
return inputFragmentView;
}
关于android - onClickListener 在 fragment 中不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/61225625/