Upgrade to modern sites

README.md

@@ -8,7 +8,7 @@ This is a template project for Android Studio that allows you to create an andro
 
 If you want to create an app that shows the content of a remote website
 
-1. uncomment line **24** in `MainActivity.java` and replace `https://example.com` with your url
+1. uncomment line **80** in `MainActivity.java` and replace `https://example.com` with your url
 
 	```java
 	mWebView.loadUrl("https://example.com");
@@ -24,7 +24,7 @@ If you want to create an app that shows the content of a remote website
 
 If you want to create a local HTML5 android app
 
-1. uncomment line **27** in `MainActivity.java`
+1. uncomment line **83** in `MainActivity.java`
 
 	```java
 	mWebView.loadUrl("file:///android_asset/index.html");

app/src/main/java/com/example/app/MainActivity.java

@@ -2,37 +2,147 @@
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.DownloadManager;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.net.Uri;
 import android.os.Bundle;
+import android.os.Environment;
+import android.webkit.CookieManager;
+import android.webkit.URLUtil;
+import android.webkit.ValueCallback;
+import android.webkit.WebChromeClient;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
+import android.widget.Toast;
+import android.webkit.WebViewClient;
 
 public class MainActivity extends Activity {
 
     private WebView mWebView;
+    private ValueCallback<Uri[]> mFilePathCallback;
+    private final static int FILECHOOSER_RESULTCODE = 1;
+
+    @Override
+    public void onBackPressed() {
+        if (mWebView.canGoBack()) {
+            // Se houver páginas no histórico, voltar para a página anterior
+            mWebView.goBack();
+        } else {
+            // Se não houver, comportar-se como o botão "voltar" padrão do Android
+            super.onBackPressed();
+        }
+    }
 
     @Override
     @SuppressLint("SetJavaScriptEnabled")
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         mWebView = findViewById(R.id.activity_main_webview);
+
         WebSettings webSettings = mWebView.getSettings();
         webSettings.setJavaScriptEnabled(true);
+        webSettings.setLoadWithOverviewMode(true);
+        webSettings.setUseWideViewPort(true);
+        webSettings.setBuiltInZoomControls(true);
+        webSettings.setDisplayZoomControls(false);
+        webSettings.setDomStorageEnabled(true);
+        webSettings.setAppCacheEnabled(true);
+        webSettings.setDatabaseEnabled(true);
+        webSettings.setCacheMode(WebSettings.LOAD_DEFAULT);
+
+        // Definindo o WebViewClient para garantir que os links sejam abertos na WebView
         mWebView.setWebViewClient(new MyWebViewClient());
 
+        // Definindo o WebChromeClient para lidar com uploads de arquivos
+        mWebView.setWebChromeClient(new WebChromeClient() {
+            // Para Android 5.0+
+            @Override
+            public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
+                if (mFilePathCallback != null) {
+                    mFilePathCallback.onReceiveValue(null);
+                }
+                mFilePathCallback = filePathCallback;
+                Intent intent = fileChooserParams.createIntent();
+                try {
+                    startActivityForResult(intent, FILECHOOSER_RESULTCODE);
+                } catch (Exception e) {
+                    mFilePathCallback = null;
+                    return false;
+                }
+                return true;
+            }
+        });
+
         // REMOTE RESOURCE
-        // mWebView.loadUrl("https://example.com");
+        mWebView.loadUrl("https://example.com");
 
         // LOCAL RESOURCE
-        // mWebView.loadUrl("file:///android_asset/index.html");
+        mWebView.loadUrl("file:///android_asset/index.html");
     }
 
     @Override
-    public void onBackPressed() {
-        if(mWebView.canGoBack()) {
-            mWebView.goBack();
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (requestCode == FILECHOOSER_RESULTCODE) {
+            if (mFilePathCallback != null) {
+                Uri[] results = null;
+                if (resultCode == Activity.RESULT_OK) {
+                    if (data != null) {
+                        String dataString = data.getDataString();
+                        if (dataString != null) {
+                            results = new Uri[]{Uri.parse(dataString)};
+                        }
+                    }
+                }
+                mFilePathCallback.onReceiveValue(results);
+                mFilePathCallback = null;
+            }
         } else {
-            super.onBackPressed();
+            super.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
+    private class MyWebViewClient extends WebViewClient {
+        @Override
+        public boolean shouldOverrideUrlLoading(WebView view, String url) {
+            // Se o URL for um arquivo de download, tratar manualmente o download
+            if (url.endsWith(".pdf") || url.endsWith(".zip") || url.endsWith(".doc") || url.endsWith(".docx")) {
+                // Mostrar um diálogo de confirmação antes de iniciar o download
+                new AlertDialog.Builder(MainActivity.this)
+                        .setTitle("Download")
+                        .setMessage("Deseja baixar o arquivo?")
+                        .setPositiveButton("Sim", new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+                                DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
+                                String cookies = CookieManager.getInstance().getCookie(url);
+                                String fileName = URLUtil.guessFileName(url, null, null);
+                                request.addRequestHeader("cookie", cookies);
+                                request.addRequestHeader("User-Agent", view.getSettings().getUserAgentString());
+                                request.setDescription("Baixando arquivo...");
+                                request.setTitle(fileName);
+                                request.allowScanningByMediaScanner();
+                                request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
+                                request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
+
+                                DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
+                                dm.enqueue(request);
+                                Toast.makeText(getApplicationContext(), "Baixando arquivo...", Toast.LENGTH_LONG).show();
+                            }
+                        })
+                        .setNegativeButton("Não", new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+                                dialog.dismiss();
+                            }
+                        })
+                        .setIcon(android.R.drawable.ic_menu_save)
+                        .show();
+                return true; // Bloquear a WebView de carregar o URL de arquivo diretamente
+            }
+
+            // Permitir que URLs de outras páginas sejam carregadas na WebView
+            return false;
         }
     }
 }