package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Bitmap;
import android.os.Bundle;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class MainActivity extends AppCompatActivity {
    private WebView mywebView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mywebView= findViewById(R.id.webview);
        mywebView.setWebViewClient(new WebViewClient());
        mywebView.loadUrl("https://coinvisa.com/");
        WebSettings webSettings=mywebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
    }
    public class mywebClient extends WebViewClient{
        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon){
            super.onPageStarted(view,url,favicon);
        }
        @Override
        public boolean shouldOverrideUrlLoading(WebView view,String url){
            view.loadUrl(url);
            return true;
        }
    }
    @Override
    public void onBackPressed(){
        if(mywebView.canGoBack()) {
            mywebView.goBack();
        }
        else{
            super.onBackPressed();
        }
    }enter code here
}

This is the error at end.. Manifest merger failed : Apps targeting Android 12 and higher are required to specify an explicit value for android:exported when the corresponding component has an intent filter defined

CodePudding user response：

Add param android:exported in AndroidManifest.xml file under activity

Like below code:

    <activity
        android:name=".MainActivity"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

Add android:exported="true" for Launcher activity and android:exported="false" to other activities.

CodePudding user response：

Goto AndroidManifest.xml and add the following line to each activity

<activity
        android:name=".MainActivity"
        android:exported="true" />