找不到Android Studio变量WebView

Question

    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.webkit.WebSettings;
    import android.webkit.WebView;

    import static com.example.tencho.cst.R.id.*;

    public class MainActivity extends AppCompatActivity {

        private WebView MywebView;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            MywebView =(WebView)this.findViewById(WebView);
            WebSettings webSettings=MywebView.getSettings();
            webSettings.setJavaScriptEnabled(true);
            MywebView.loadUrl("www.cst.edu.bt");
        }
   }

This is the MainActivity.java . it's always giving me an error cannot find symbol variable WebView .

I did read the past similar post but I couldn't solve it error. Please need help!

Answer 1

At this line

MywebView =(WebView)this.findViewById(id);

id should be like R.id.webview1

webview1 is the id in your XML layout

Answer 2

The error is on this line:

MywebView =(WebView)this.findViewById(WebView);

The cause of this error is that the generated R.id class has no field named WebView (the argument you are passing to the findViewById() method). This is probably happening because your layout's <WebView> tag is missing an id attribute. Add this line to your <WebView> tag:

android:id="@+id/WebView"

Answer 3

Ben's answer is correct. In addition, if your new to Android, if you added this part in your tag which can be found in your activity_main.xml layout..

android:id="@+id/webview"

then in your MainActivity.java, it should be like this:

MywebView =(WebView) findViewById(R.id.webview);