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Code Releases Wiki Activity

Bangle.js: Improve file downloads - we can now at least get files downloaded

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This commit is contained in:
Gordon Williams 2023-09-14 12:49:37 +01:00
parent e18a991b13
commit c647c2647f
1 changed files with 67 additions and 21 deletions
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88
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/banglejs/AppsManagementActivity.java
View File

@ -3,12 +3,15 @@ package nodomain.freeyourgadget.gadgetbridge.devices.banglejs;
import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_DEVICE_INTERNET_ACCESS;
import android.app.Activity;
import android.app.DownloadManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Base64;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
@ -39,6 +42,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.OutputStream;
import nodomain.freeyourgadget.gadgetbridge.GBApplication;
import nodomain.freeyourgadget.gadgetbridge.R;
@ -64,6 +68,12 @@ public class AppsManagementActivity extends AbstractGBActivity {
private int deviceRxSeq = -1;
/// When a file chooser has been opened in the WebView, this is what should get called
private ValueCallback<Uri[]> fileChooserCallback;
/// used by showSaveFileDialog for file data
private byte[] fileSaveData;
// Request code for creating a PDF document.
private static final int CHOOSE_FILE = 0;
private static final int CREATE_FILE = 1;
public AppsManagementActivity() {
}
@ -145,8 +155,7 @@ public class AppsManagementActivity extends AbstractGBActivity {
LOG.info("WebView RX: " + data);
bangleTxData(data);
}
}
}
// Called when data received from Bangle.js - push data to the WebView
public void bangleRxData(String data) {
@ -171,6 +180,16 @@ public class AppsManagementActivity extends AbstractGBActivity {
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
public void showSaveFileDialog(String fileName, String mimeType, byte data[]) {
Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
if (mimeType!=null) intent.setType(mimeType);
if (fileName!=null) intent.putExtra(Intent.EXTRA_TITLE, fileName);
fileSaveData = data;
startActivityForResult(intent, CREATE_FILE);
// see onActivityResult
}
private void initViews() {
//https://stackoverflow.com/questions/4325639/android-calling-javascript-functions-in-webview
webView = findViewById(R.id.webview);
@ -232,8 +251,8 @@ public class AppsManagementActivity extends AbstractGBActivity {
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, selectionIntent);
startActivityForResult(chooserIntent, 0);
startActivityForResult(chooserIntent, CHOOSE_FILE);
// see onActivityResult
return true;
}
@ -244,16 +263,26 @@ public class AppsManagementActivity extends AbstractGBActivity {
String contentDisposition, String mimetype,
long contentLength) {
if (url == null) return;
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url.replaceFirst("^blob:", "")));
startActivity(i);
/*DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url)); // fails with java.lang.IllegalArgumentException: Can not handle uri::
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "download");
DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
dm.enqueue(request);*/
// FIXME: When we get to this point we have no idea what the filename is
// maybe we should just add 'Android.downloadFile' and call that from the App Loader
if(url.startsWith("blob:")) {
LOG.error("WebView blob: download requested, but not supported");
// This should be possible with https://stackoverflow.com/a/48954970/1215872
// but having tried the XMLHttpRequest can't find the blob - I think because the blob ends
// up being created inside an iframe, and the data isn't accessible from the
// external one
} else if(url.startsWith("data:") && url.contains(";base64,")) {
int commaIdx = url.indexOf(";base64,");
if (commaIdx>=0) {
String b64 = url.substring(commaIdx + 8);
byte data[] = Base64.decode(b64, Base64.DEFAULT);
showSaveFileDialog(null, mimetype, data);
} else LOG.error("WebView data: download requested, but not base64");
} else { // just view in the web browser
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
}
}
});
}
@ -261,13 +290,30 @@ public class AppsManagementActivity extends AbstractGBActivity {
@Override // for file chooser results
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
if (fileChooserCallback==null) return;
Uri[] results = null;
if (resultCode == Activity.RESULT_OK)
results = new Uri[]{Uri.parse(intent.getDataString())};
fileChooserCallback.onReceiveValue(results);
fileChooserCallback = null;
if (requestCode == CHOOSE_FILE) { // onShowFileChooser
if (fileChooserCallback == null) return;
Uri[] results = null;
if (resultCode == Activity.RESULT_OK)
results = new Uri[]{Uri.parse(intent.getDataString())};
fileChooserCallback.onReceiveValue(results);
fileChooserCallback = null;
}
if (requestCode == CREATE_FILE) { // showSaveFileDialog
OutputStream os = null;
try {
os = getContentResolver().openOutputStream(intent.getData());
os.write(fileSaveData);
os.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
os.close();
} catch (IOException e) {
}
}
fileSaveData = null;
}
}
}