Some success exporting and importing apps on android.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4826 ed5197a5-7fde-0310-b194-c3ffbd925b24

core/client.js

@@ -1042,11 +1042,11 @@ async function appExport() {
 		zip.file(`${name}/${file}`, gFiles[file].buffer ?? gFiles[file].doc.doc.toString());
 	}
 	let content = await zip.generateAsync({
-		type: 'blob',
+		type: 'base64',
 		compression: 'DEFLATE',
 	});
 	let a = document.createElement('a');
-	a.href = URL.createObjectURL(content);
+	a.href = `data:application/zip;base64,${content}`;
 	a.download = `${owner}_${name}.zip`;
 	a.click();
 }
@@ -1079,10 +1079,11 @@ async function appImport() {
 		try {
 			for (let file of input.files) {
 				if (file.type != 'application/zip') {
-					console.log('This does not look like a .zip.');
+					console.log(`This does not look like a .zip (${file.type}).`);
 					continue;
 				}
-				let buffer = await file.arrayBuffer();
+				let buffer = new Uint8Array(await file.arrayBuffer());
+				console.log('ZIP', file.name, file.type, buffer, buffer?.byteLength, buffer?.length);
 				let zip = new JsZip();
 				await zip.loadAsync(buffer);
 				let app_object;

src/android/com/unprompted/tildefriends/MainActivity.java

@@ -2,30 +2,39 @@ package com.unprompted.tildefriends;
 
 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.CountDownTimer;
+import android.os.Environment;
 import android.os.StrictMode;
 import android.os.SystemClock;
 import android.os.strictmode.Violation;
+import android.util.Base64;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.Window;
+import android.webkit.CookieManager;
+import android.webkit.DownloadListener;
 import android.webkit.JsResult;
+import android.webkit.URLUtil;
+import android.webkit.ValueCallback;
 import android.webkit.WebChromeClient;
 import android.webkit.WebResourceRequest;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.widget.Button;
 import android.widget.TextView;
+import android.widget.Toast;
 import java.io.BufferedInputStream;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
+import java.io.OutputStream;
 import java.io.FileReader;
 import java.io.InputStream;
 import java.lang.Process;
@@ -44,6 +53,9 @@ public class MainActivity extends Activity {
 	Process process;
 	Thread thread;
 
+	private ValueCallback<Uri[]> upload_message;
+	private final static int FILECHOOSER_RESULT = 1;
+
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
 		StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
@@ -134,6 +146,38 @@ public class MainActivity extends Activity {
 		web_view.getSettings().setDatabaseEnabled(true);
 		web_view.getSettings().setDomStorageEnabled(true);
 
+		web_view.setDownloadListener(new DownloadListener() {
+			public void onDownloadStart(String url, String userAgent, String content_disposition, String mime_type, long content_length) {
+				Log.w("tildefriends", "Let's download: " + url + " (" + content_disposition + ")");
+				String file_name = URLUtil.guessFileName(url, content_disposition, mime_type);
+				if (url.startsWith("data:") && url.indexOf(',') != -1) {
+					String b64 = url.substring(url.indexOf(',') + 1);
+					byte[] data = Base64.decode(b64, Base64.DEFAULT);
+					Log.w("tildefriends", "Downloaded " + data.length + " bytes.");
+					File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
+					try (OutputStream stream = new FileOutputStream(new File(path, file_name))) {
+						stream.write(data);
+					} catch (java.io.IOException e) {
+						Log.w("tildefriends", "IOException: " + e.toString());
+					}
+					Toast.makeText(getApplicationContext(), "Downloaded File", Toast.LENGTH_LONG).show();
+				} else {
+					DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
+					request.setMimeType(mime_type);
+					String cookies = CookieManager.getInstance().getCookie(url);
+					request.addRequestHeader("cookie", cookies);
+					request.addRequestHeader("User-Agent", userAgent);
+					request.setDescription("Downloading file...");
+					request.setTitle(file_name);
+					request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
+					request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, URLUtil.guessFileName(url, content_disposition, mime_type));
+					DownloadManager dm = (DownloadManager)getSystemService(DOWNLOAD_SERVICE);
+					dm.enqueue(request);
+					Toast.makeText(getApplicationContext(), "Downloading File", Toast.LENGTH_LONG).show();
+				}
+			}
+		});
+
 		web_view.setWebChromeClient(new WebChromeClient() {
 			@Override
 			public boolean onJsConfirm(WebView view, String url, String message, final JsResult result) {
@@ -159,6 +203,21 @@ public class MainActivity extends Activity {
 				return true;
 			}
 
+			/*
+			** https://stackoverflow.com/questions/5907369/file-upload-in-webview
+			** https://stackoverflow.com/questions/8586691/how-to-open-file-save-dialog-in-android
+			*/
+
+			@Override
+			public boolean onShowFileChooser(WebView view, ValueCallback<Uri[]> message, WebChromeClient.FileChooserParams params) {
+				upload_message = message;
+				Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
+				intent.addCategory(Intent.CATEGORY_OPENABLE);
+				intent.setType("*/*");
+				MainActivity.this.startActivityForResult(Intent.createChooser(intent, "File Chooser"), MainActivity.FILECHOOSER_RESULT);
+				return true;
+			}
+
 			@Override
 			public boolean onConsoleMessage(android.webkit.ConsoleMessage consoleMessage) {
 				Log.d("tildefriends", consoleMessage.message() + " -- From line " + consoleMessage.lineNumber() + " of " + consoleMessage.sourceId());
@@ -213,6 +272,17 @@ public class MainActivity extends Activity {
 		web_view.restoreState(savedInstanceState);
 	}
 
+	@Override
+	public void onActivityResult(int requestCode, int resultCode, Intent intent) {
+		if (requestCode == FILECHOOSER_RESULT) {
+			if (upload_message == null) {
+				return;
+			}
+			upload_message.onReceiveValue(WebChromeClient.FileChooserParams.parseResult(resultCode, intent));
+			upload_message = null;
+		}
+	}
+
 	@Override
 	public boolean onKeyDown(int keyCode, KeyEvent event) {
 		if (keyCode == KeyEvent.KEYCODE_BACK && web_view.canGoBack()) {