init WebView and show Javascript dialog - Android User Interface

Android examples for User Interface:WebView Javascript

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Description

init WebView and show Javascript dialog

Demo Code


//package com.java2s;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;

import android.view.View;

import android.webkit.JsPromptResult;
import android.webkit.JsResult;

import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static Pattern pattern = Pattern
            .compile(".*(.jpg|.png|.gif|.jpeg|.bmp)$");

    public static void initView(WebView webView, String url, Context context) {

        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setRenderPriority(
                WebSettings.RenderPriority.HIGH);

        webView.getSettings().setDomStorageEnabled(true);
        webView.getSettings().setLoadsImagesAutomatically(true);

        webView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);


        webView.loadUrl(url);//w w  w  .j  ava 2  s  . c o m
        startWebView(webView, context);

    }

    static private void startWebView(WebView webView, final Context context) {
        webView.setWebViewClient(new WebViewClient() {
            ProgressDialog progressDialog;

            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                Matcher matcher = pattern.matcher(url.toLowerCase());
                if (matcher.matches()) {
                    return true;
                }
                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setData(Uri.parse(url));
                context.startActivity(intent);
                return false;
            }

            public void onLoadResource(WebView view, String url) {
                if (progressDialog == null && url.contains("webview")) {

                    progressDialog = new ProgressDialog(context);
                    progressDialog.setCancelable(true);
                    progressDialog.setCanceledOnTouchOutside(true);
                    progressDialog.setMessage("???...");
                    progressDialog.show();
                }
            }

            public void onPageFinished(WebView view, String url) {
                try {
                    if (progressDialog.isShowing()) {
                        progressDialog.dismiss();
                        progressDialog = null;
                    }
                } catch (Exception exception) {
                }
            }

            @Override
            public void onReceivedError(WebView view, int errorCode,
                    String description, String failingUrl) {

                view.setVisibility(View.GONE); // ??????????

            }

        });
        webView.setWebChromeClient(new WebChromeClient() {

            @Override
            public boolean onJsAlert(WebView view, String url,
                    String message, JsResult result) {
                result.confirm();
                return true;
            }

            @Override
            public boolean onJsConfirm(WebView view, String url,
                    String message, JsResult result) {

                return super.onJsConfirm(view, url, message, result);
            }

            @Override
            public boolean onJsPrompt(WebView view, String url,
                    String message, String defaultValue,
                    JsPromptResult result) {

                return super.onJsPrompt(view, url, message, defaultValue,
                        result);
            }
        });
    }
}

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