Пишу первую прогу на с помощью WebView в Android Studio. При выполнении вылетает следующая ошибка:
'''
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.smile20, PID: 30909
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.smile20/com.example.smile20.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3534)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3689)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:140)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:100)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2239)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:227)
at android.app.ActivityThread.main(ActivityThread.java:7822)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1026)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
at com.example.smile20.MainActivity.onCreate(MainActivity.java:20)
at android.app.Activity.performCreate(Activity.java:7963)
at android.app.Activity.performCreate(Activity.java:7952)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1306)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3505)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3689)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:140)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:100)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2239)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:227)
at android.app.ActivityThread.main(ActivityThread.java:7822)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1026)
'''
Код MainActivity:
'''
package com.example.smile20;
import androidx.appcompat.app.AppCompatActivity;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Bundle;
import android.webkit.WebResourceRequest;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
WebView webView = findViewById(R.id.webView);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("https://thepigeon.org/");
WebViewClient webViewClient = new WebViewClient() {
@SuppressWarnings("deprecation") @Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
@TargetApi(Build.VERSION_CODES.N) @Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
view.loadUrl(request.getUrl().toString());
return true;
}
};
webView.setWebViewClient(webViewClient);
}
}
'''
