Java tutorial
/* This file is part of the dandelion*. dandelion* is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. dandelion* is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the dandelion*. If not, see <http://www.gnu.org/licenses/>. */ package com.github.dfa.diaspora_android.activity; import android.Manifest; import android.animation.ObjectAnimator; import android.annotation.SuppressLint; import android.app.Activity; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.provider.MediaStore; import android.support.design.widget.Snackbar; import android.support.v4.content.ContextCompat; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.webkit.JavascriptInterface; import android.webkit.ValueCallback; import android.webkit.WebChromeClient; import android.webkit.WebView; import android.widget.Toast; import com.github.dfa.diaspora_android.App; import com.github.dfa.diaspora_android.BuildConfig; import com.github.dfa.diaspora_android.R; import com.github.dfa.diaspora_android.data.DiasporaUserProfile; import com.github.dfa.diaspora_android.ui.theme.ThemedAlertDialogBuilder; import com.github.dfa.diaspora_android.util.AppLog; import com.github.dfa.diaspora_android.util.AppSettings; import com.github.dfa.diaspora_android.util.ContextUtils; import com.github.dfa.diaspora_android.util.DiasporaUrlHelper; import com.github.dfa.diaspora_android.web.BrowserFragment; import com.github.dfa.diaspora_android.web.DiasporaStreamWebChromeClient; import com.github.dfa.diaspora_android.web.FileUploadWebChromeClient; import com.github.dfa.diaspora_android.web.WebHelper; import net.gsantner.opoc.util.PermissionChecker; import net.gsantner.opoc.util.ShareUtil; import org.json.JSONException; import java.io.File; import java.io.IOException; import java.util.Date; /** * Fragment that displays the Stream of the diaspora* user * Created by vanitas on 26.09.16. */ public class DiasporaStreamFragment extends BrowserFragment { public static final String TAG = "com.github.dfa.diaspora_android.StreamFragment"; protected DiasporaUrlHelper urls; private ValueCallback<Uri[]> imageUploadFilePathCallbackNew; private ValueCallback<Uri> imageUploadFilePathCallbackOld; private String mCameraPhotoPath; @SuppressLint("SetJavaScriptEnabled") @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); this.urls = new DiasporaUrlHelper(appSettings); getActivity().runOnUiThread(new Runnable() { @Override public void run() { webView.setWebChromeClient(new DiasporaStreamWebChromeClient(webView, progressBar, fileUploadCallback, sharedTextCallback)); webView.getSettings().setJavaScriptEnabled(true); webView.addJavascriptInterface(new JavaScriptInterface(), "AndroidBridge"); if (((MainActivity) getActivity()).getTextToBeShared() != null) { loadUrl(urls.getNewPostUrl()); } else if (webView.getUrl() == null) { loadUrl(urls.getStreamUrl()); } } }); } public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); inflater.inflate(R.menu.stream__menu_top, menu); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { menu.findItem(R.id.action_share_pdf).setVisible(true); } final boolean darkBg = ContextUtils.get().shouldColorOnTopBeLight(AppSettings.get().getPrimaryColor()); ContextUtils.get().tintMenuItems(menu, true, ContextCompat.getColor(getActivity(), darkBg ? R.color.white : R.color.black)); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { AppLog.d(this, "onActivityResult(): " + requestCode); switch (requestCode) { case MainActivity.INPUT_FILE_REQUEST_CODE_NEW: case MainActivity.INPUT_FILE_REQUEST_CODE_OLD: AppLog.v(this, "INPUT_FILE_REQUEST_CODE: " + requestCode); onImageUploadResult(requestCode, resultCode, data); return; } super.onActivityResult(requestCode, resultCode, data); } @Override public boolean onOptionsItemSelected(MenuItem item) { AppLog.d(this, "StreamFragment.onOptionsItemSelected()"); ShareUtil shu = new ShareUtil(getContext()).setFileProviderAuthority(BuildConfig.APPLICATION_ID); PermissionChecker permc = new PermissionChecker(getActivity()); switch (item.getItemId()) { case R.id.action_reload: { if (WebHelper.isOnline(getContext())) { reloadUrl(); return true; } else { return false; } } case R.id.action_go_to_top: { ObjectAnimator anim = ObjectAnimator.ofInt(webView, "scrollY", webView.getScrollY(), 0); anim.setDuration(400); anim.start(); return true; } case R.id.action_share_link: { Intent sharingIntent = new Intent(Intent.ACTION_SEND); sharingIntent.setType("text/plain"); sharingIntent.putExtra(Intent.EXTRA_SUBJECT, webView.getTitle()); sharingIntent.putExtra(Intent.EXTRA_TEXT, webView.getUrl()); startActivity(Intent.createChooser(sharingIntent, getResources().getString(R.string.share_dotdotdot))); return true; } case R.id.action_share_pdf: { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { shu.createPdf(webView, "dandelion-" + ShareUtil.SDF_SHORT.format(new Date())); } return true; } case R.id.action_share_link_to_clipboard: { shu.setClipboard(webView.getUrl()); Toast.makeText(getContext(), R.string.link_adress_copied, Toast.LENGTH_SHORT).show(); return true; } case R.id.action_create_launcher_shortcut: { if (webView.getUrl() != null) { Intent intent = new Intent(getContext(), MainActivity.class); intent.setAction(Intent.ACTION_VIEW); intent.setData(Uri.parse(webView.getUrl())); shu.createLauncherDesktopShortcut(intent, R.drawable.ic_launcher, webView.getTitle()); } return true; } case R.id.action_take_screenshot: { if (permc.doIfExtStoragePermissionGranted(getString(R.string.screenshot_permission__appspecific))) { File fileSaveDirectory = appSettings.getAppSaveDirectory(); if (permc.mkdirIfStoragePermissionGranted(fileSaveDirectory)) { Bitmap bmp = ShareUtil.getBitmapFromWebView(webView); String filename = "dandelion-" + ShareUtil.SDF_SHORT.format(new Date()) + ".jpg"; _cu.writeImageToFileJpeg(new File(fileSaveDirectory, filename), bmp); Snackbar.make(webView, getString(R.string.saving_screenshot_as) + " " + filename, Snackbar.LENGTH_LONG).show(); } } return true; } case R.id.action_share_screenshot: { if (permc.doIfExtStoragePermissionGranted(getString(R.string.screenshot_permission__appspecific))) { shu.shareImage(ShareUtil.getBitmapFromWebView(webView), Bitmap.CompressFormat.JPEG); } return true; } } return super.onOptionsItemSelected(item); } public void onImageUploadResult(int requestCode, int resultCode, Intent data) { AppLog.d(this, "onImageUploadResult"); switch (requestCode) { case MainActivity.INPUT_FILE_REQUEST_CODE_NEW: { AppLog.v(this, "Upload image using recent method (Lollipop+)"); if (imageUploadFilePathCallbackNew == null || resultCode != Activity.RESULT_OK) { AppLog.e(this, "Callback is null: " + (imageUploadFilePathCallbackNew == null) + " resultCode: " + resultCode); if (imageUploadFilePathCallbackNew != null) imageUploadFilePathCallbackNew.onReceiveValue(new Uri[] {}); return; } Uri[] results = null; if (data == null) { if (mCameraPhotoPath != null) { AppLog.v(this, "Intent data is null. Try to parse cameraPhotoPath"); results = new Uri[] { Uri.parse(mCameraPhotoPath) }; } else { AppLog.w(this, "Intent data is null and cameraPhotoPath is null"); } } else { String dataString = data.getDataString(); if (dataString != null) { AppLog.v(this, "Intent has data. Try to parse dataString"); results = new Uri[] { Uri.parse(dataString) }; } else { AppLog.w(this, "dataString is null"); } } AppLog.v(this, "handle received result over to callback"); imageUploadFilePathCallbackNew.onReceiveValue(results); imageUploadFilePathCallbackNew = null; return; } case MainActivity.INPUT_FILE_REQUEST_CODE_OLD: { AppLog.v(this, "Upload image using legacy method (Jelly Bean, Kitkat)"); if (imageUploadFilePathCallbackOld == null || resultCode != Activity.RESULT_OK) { AppLog.e(this, "Callback is null: " + (imageUploadFilePathCallbackOld == null) + " resultCode: " + resultCode); if (imageUploadFilePathCallbackOld != null) imageUploadFilePathCallbackOld.onReceiveValue(null); return; } Uri results = null; if (data == null) { if (mCameraPhotoPath != null) { AppLog.v(this, "Intent has no data. Try to parse cameraPhotoPath"); results = Uri.parse(mCameraPhotoPath); } else { AppLog.w(this, "Intent has no data and cameraPhotoPath is null"); } } else { String dataString = data.getDataString(); if (dataString != null) { AppLog.v(this, "Intent has data. Try to parse dataString"); results = Uri.parse(dataString); } else { AppLog.w(this, "dataString is null"); } } AppLog.v(this, "handle received result over to callback"); imageUploadFilePathCallbackOld.onReceiveValue(results); imageUploadFilePathCallbackOld = null; } } } protected DiasporaStreamWebChromeClient.SharedTextCallback sharedTextCallback = new DiasporaStreamWebChromeClient.SharedTextCallback() { @Override public String getSharedText() { if (getActivity() != null) { return ((MainActivity) getActivity()).getTextToBeShared(); } return ""; } @Override public void setSharedText(String shared) { ((MainActivity) getActivity()).setTextToBeShared(shared); } }; protected FileUploadWebChromeClient.FileUploadCallback fileUploadCallback = new FileUploadWebChromeClient.FileUploadCallback() { @Override public boolean imageUpload(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) { if (Build.VERSION.SDK_INT >= 23) { int hasWRITE_EXTERNAL_STORAGE = getActivity() .checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE); if (hasWRITE_EXTERNAL_STORAGE != PackageManager.PERMISSION_GRANTED) { if (!shouldShowRequestPermissionRationale(Manifest.permission.WRITE_EXTERNAL_STORAGE)) { new ThemedAlertDialogBuilder(getContext(), appSettings) .setMessage(R.string.image_permission_description__appspecific) .setNegativeButton(android.R.string.no, null) .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (android.os.Build.VERSION.SDK_INT >= 23) requestPermissions( new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE }, MainActivity.REQUEST_CODE_ASK_PERMISSIONS); } }).show(); return false; } requestPermissions(new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE }, MainActivity.REQUEST_CODE_ASK_PERMISSIONS); return false; } } AppLog.v(this, "onOpenFileChooser"); imageUploadFilePathCallbackNew = filePathCallback; Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (takePictureIntent.resolveActivity(getContext().getPackageManager()) != null) { // Create the File where the photo should go File photoFile; try { photoFile = ContextUtils.get().createImageFile(); takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath); } catch (IOException ex) { AppLog.e(this, "ERROR creating temp file: " + ex.toString()); // Error occurred while creating the File Snackbar.make(webView, R.string.unable_to_load_image, Snackbar.LENGTH_LONG).show(); return false; } // Continue only if the File was successfully created if (photoFile != null) { mCameraPhotoPath = "file:" + photoFile.getAbsolutePath(); takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile)); } else { takePictureIntent = null; } } Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT); contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE); contentSelectionIntent.setType("image/*"); Intent[] intentArray; if (takePictureIntent != null) { intentArray = new Intent[] { takePictureIntent }; } else { intentArray = new Intent[0]; } Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER); chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent); chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser"); chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray); AppLog.d(this, "startActivityForResult"); startActivityForResult(chooserIntent, MainActivity.INPUT_FILE_REQUEST_CODE_NEW); return true; } @Override public void legacyImageUpload(ValueCallback<Uri> uploadMsg, String acceptType, String capture) { AppLog.v(this, "openFileChooser(ValCallback<Uri>, String, String"); imageUploadFilePathCallbackOld = uploadMsg; Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_GET_CONTENT); intent.putExtra("return-data", true); intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); AppLog.v(this, "startActivityForResult"); startActivityForResult(Intent.createChooser(intent, "Select Picture"), MainActivity.INPUT_FILE_REQUEST_CODE_OLD); } }; private class JavaScriptInterface { @SuppressWarnings("unused") @JavascriptInterface public void setUserProfile(final String webMessage) throws JSONException { final Activity activity = getActivity(); if (activity != null) { activity.runOnUiThread(new Runnable() { @Override public void run() { App app = ((App) activity.getApplication()); final DiasporaUserProfile pup = app.getDiasporaUserProfile(); if (pup.isRefreshNeeded()) { try { // Try to very fail-safe check if user information gets really loaded from correct pod if (!webView.getUrl() .startsWith(app.getSettings().getPod().getPodUrl().getBaseUrl())) { return; } } catch (Exception ignored) { return; } AppLog.v(this, "DiasporaUserProfile needs refresh; Try to parse JSON"); pup.parseJson(webMessage); getActivity().runOnUiThread(new Runnable() { public void run() { pup.analyzeUrl(webView.getUrl()); } }); } } }); } } @SuppressWarnings("unused") @JavascriptInterface public void contentHasBeenShared() { if (getActivity() != null) { ((MainActivity) getActivity()).setTextToBeShared(null); } } } @Override public String getFragmentTag() { return TAG; } }