webview alert confirm 重写

待我称王封你为后i 2022-08-20 14:09 101阅读 0赞

直接上代码：

public class MainActivity extends Activity { 
        WebView webVContent;
        WebSettings webSettings;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.maintest);
            webVContent = (WebView) findViewById(R.id.myweb);
            webVContent.setWebChromeClient(new WebChromeClient() {
    
                @Override
                public boolean onJsConfirm(WebView view, String url, String message, JsResult result) {
                    AlertDialog.Builder confirm = new AlertDialog.Builder(MainActivity.this, AlertDialog.THEME_DEVICE_DEFAULT_LIGHT);
    
                    confirm.setTitle("提示");
                    confirm.setMessage(message);
    
                    final JsResult a = result;
                    confirm.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            a.cancel();
                        }
                    });
                    confirm.setPositiveButton("确定", new DialogInterface.OnClickListener() {
    
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            a.confirm();
                        }
                    });
    
                    confirm.setOnCancelListener(new DialogInterface.OnCancelListener() {
    
                        @Override
                        public void onCancel(DialogInterface dialog) {
                            a.cancel();
                        }
                    });
                    AlertDialog create = confirm.create();
                    create.setCanceledOnTouchOutside(true);
                    create.show();
                    return true;
                }
    
                @Override
                public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
                    AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this, AlertDialog.THEME_DEVICE_DEFAULT_LIGHT);
    
                    alert.setTitle("提示");
                    alert.setMessage(message);
                    final JsResult a = result;
                    alert.setPositiveButton("确定", new DialogInterface.OnClickListener() {
    
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            a.confirm();
                        }
                    });
    
                    alert.setOnCancelListener(new DialogInterface.OnCancelListener() {
                        @Override
                        public void onCancel(DialogInterface dialog) {
                            a.cancel();
                        }
                    });
                    AlertDialog create = alert.create();
                    create.setCanceledOnTouchOutside(true);
                    create.show();
                    return true;
                }
    
            });
            webVContent.setWebViewClient(new WebViewClient() {
                @Override
                public boolean shouldOverrideUrlLoading(WebView view, String url) {
                    view.loadUrl(url);
                    return true;
                }
            });
            webSettings = webVContent.getSettings();
            webSettings.setJavaScriptEnabled(true);
            webVContent.loadUrl("file:///android_asset/index.html");
    
        }
    
        @Override
        public void onBackPressed() {
            if (webVContent.canGoBack()) {
                webVContent.goBack();
            } else {
                super.onBackPressed();
            }
        }
        @Override
        protected void onDestroy() {
            if(webSettings!=null)
                webSettings.setJavaScriptEnabled(false);
            super.onDestroy();
        }
    
    }