javascript - 如何在浏览器中打开外部 WebView 链接？

Question

我想在浏览器中打开外部 webview 链接，所以请更新我的代码。实际上问题是我的 webview 包含一些谷歌驱动器链接所以我想在浏览器中打开所有外部链接并且我在网络上搜索太多关于它但我找不到正确的解决方案。我是 android studio 的新手，所以请帮帮我。

package com.iaritoppers;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;

import android.renderscript.Sampler;
import android.view.KeyEvent;
import android.view.View;

import androidx.appcompat.widget.AppCompatRatingBar;
import androidx.core.view.GravityCompat;
import androidx.appcompat.app.ActionBarDrawerToggle;
import android.view.MenuItem;
import com.google.android.material.navigation.NavigationView;
import androidx.drawerlayout.widget.DrawerLayout;

import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import android.view.Menu;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {
    //initializing WebView
    private WebView mwebView;
    private WebView mWebviewPop;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        AppRater.app_launched(this);

        mwebView = (WebView) findViewById(R.id.myWebView);
        WebSettings webSettings = mwebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        webSettings.setAppCacheEnabled(true);
        mwebView.loadUrl("https://www.iaritoppers.com/");
        mwebView.setWebViewClient(new MyWebviewClient());
        mwebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        FloatingActionButton fab = findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent shareintent =new Intent();
                shareintent.setAction(Intent.ACTION_SEND);
                shareintent.putExtra(Intent.EXTRA_TEXT , "abc");
                shareintent.setType("text/plain");
                startActivity(Intent.createChooser(shareintent,"Share Via"));
            }
        });
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        NavigationView navigationView = findViewById(R.id.nav_view);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.addDrawerListener(toggle);
        toggle.syncState();
        navigationView.setNavigationItemSelectedListener(this);
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_icar) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/icar-e-course-pdf.html");
            return true;
        }
        if (id == R.id.action_share) {
            Intent shareintent =new Intent();
            shareintent.setAction(Intent.ACTION_SEND);
            shareintent.putExtra(Intent.EXTRA_TEXT , "*I recommend you to download this very useful App For Agriculture Students -* ");
            shareintent.setType("text/plain");
            startActivity(Intent.createChooser(shareintent,"Share Via"));
        }

        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_home) {
            Intent i = new Intent(MainActivity.this, MainActivity.class);
            startActivity(i);
        } else if (id == R.id.nav_icar) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/icar-e-course-pdf.html");
        } else if (id == R.id.nav_agronomyicar) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/agronomy-icar-ecourse-pdf-books.html");
        } else if (id == R.id.nav_hortiicar) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/horticulture-icar-ecourse-pdf-books.html");
        } else if (id == R.id.nav_dairyicar) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/dairy-technology-icar-e-course-free-pdf.html");
        } else if (id == R.id.nav_tnau) {
            mwebView.loadUrl("https://www.iaritoppers.com/2019/06/tnau-notes-pdf-download-agri-study-material.html");
        } else if (id == R.id.nav_angrau) {
            mwebView.loadUrl("https://www.iaritoppers.com/2019/06/angrau-notes-download-angrau-study-material.html");
        } else if (id == R.id.nav_syllabus) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/agriculture-exams-syllabus.html");
        } else if (id == R.id.nav_jrfold) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/icar-jrf-old-papers.html");
        } else if (id == R.id.nav_bhuold) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/bhu-old-paper-ug-and-pg.html");
        } else if (id == R.id.nav_iariold) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/iari-old-question-papers-download-for.html");
        } else if (id == R.id.nav_prepgold) {
            mwebView.loadUrl("https://www.iaritoppers.com/2019/07/rajasthan-pre-pg-agriculture-old-question-paper.html");
        } else if (id == R.id.nav_afoold) {
            mwebView.loadUrl("https://www.iaritoppers.com/2019/06/ibps-afo-old-question-papers-pdf-download-for-agriculture-field-officer.html");
        } else if (id == R.id.nav_agribook) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/best-agriculture-books-for-icar-jrf-srf.html");
        } else if (id == R.id.nav_entrance) {
            mwebView.loadUrl("https://www.iaritoppers.com/search/label/agriculture%20entrance%20exams");
        } else if (id == R.id.nav_jobs) {
            mwebView.loadUrl("https://www.iaritoppers.com/search/label/Latest%20agriculture%20jobs");
        } else if (id == R.id.nav_discussion) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/discussion-desk_23.html");
        } else if (id == R.id.nav_top) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/our-top-contributors.html");
        } else if (id == R.id.nav_contact) {
            mwebView.loadUrl("https://www.iaritoppers.com/p/about-us.html");
        } else if (id == R.id.nav_share) {
        Intent shareintent =new Intent();
        shareintent.setAction(Intent.ACTION_SEND);
        shareintent.putExtra(Intent.EXTRA_TEXT , "*I recommend you to download this very useful App For Agriculture Students -* ");
        shareintent.setType("text/plain");
        startActivity(Intent.createChooser(shareintent,"Share Via"));

    }

        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
    private class MyWebviewClient extends WebViewClient {



        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {

            super.onPageStarted(view, url, favicon);
            findViewById(R.id.progressBar2).setVisibility(View.VISIBLE);
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            findViewById(R.id.progressBar2).setVisibility(View.GONE);
        }

    }
    //goto previous page when pressing back button

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (event.getAction() == KeyEvent.ACTION_DOWN) {
            switch (keyCode) {
                case KeyEvent.KEYCODE_BACK:
                    if (mwebView.canGoBack()) {
                        mwebView.goBack();
                    } else
                    {
                        AlertDialog.Builder builder = new AlertDialog.Builder(this);
                        builder.setMessage("Are you sure you want to exit?")
                                .setCancelable(false)
                                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog, int id) {
                                        finish();
                                    }
                                })
                                .setNegativeButton("No", new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog, int id) {
                                        dialog.cancel();
                                    }
                                });
                        AlertDialog alert = builder.create();
                        alert.show();
                    }
                    return true;
            }
        }
        return super.onKeyDown(keyCode, event);
    }

}

Answer 1

我建议使用 chrome 自定义标签。这是 docs 的链接

但是，这里刚刚粘贴了您需要的信息:

首先，将 chrome 自定义选项卡添加到您的 Gradle 文件

dependencies {
    ...
    compile 'com.android.support:customtabs:23.3.0'
}

然后创建 chrome 自定义标签并显示它:

// Use a CustomTabsIntent.Builder to configure CustomTabsIntent.
// Once ready, call CustomTabsIntent.Builder.build() to create a CustomTabsIntent
// and launch the desired Url with CustomTabsIntent.launchUrl()

String url = ¨https://paul.kinlan.me/¨;
CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
CustomTabsIntent customTabsIntent = builder.build();
customTabsIntent.launchUrl(this, Uri.parse(url));