Activity_main.xml
is present but still its giving a error in MainActivity.java
Can anyone tell me what is the error here?
package com.example.hellotabwidget;
import android.R;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
activity_main cannot be resolved or is not a field
remove the line
import android.R;
and import the R
for appropriate package
in this line
setContentView(R.layout.activity_main)
清理项目工作区并重建一次
All you need is simply change this line:
import android.R;
to this line (if com.example.hellotabwidget
is base package of your app)
import com.example.hellotabwidget.R;
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