Java tutorial
/* This file is part of the Diaspora Native WebApp. Diaspora Native WebApp 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. Diaspora Native WebApp 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 Diaspora Native WebApp. If not, see <http://www.gnu.org/licenses/>. */ package com.github.dfa.diaspora_android.activity; import android.annotation.SuppressLint; import android.content.Intent; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.support.design.widget.Snackbar; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.webkit.ValueCallback; import android.webkit.WebChromeClient; import android.webkit.WebSettings; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.ProgressBar; import com.github.dfa.diaspora_android.App; import com.github.dfa.diaspora_android.R; import com.github.dfa.diaspora_android.util.Helpers; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; public class ShareActivity2 extends MainActivity { private WebView webView; private static final String TAG = "Diaspora Share"; private String podDomain; private ValueCallback<Uri[]> mFilePathCallback; private String mCameraPhotoPath; private com.getbase.floatingactionbutton.FloatingActionsMenu fab; private ProgressBar progressBar; private SwipeRefreshLayout swipeView; @SuppressLint("SetJavaScriptEnabled") @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); progressBar = (ProgressBar) findViewById(R.id.progressBar); swipeView = (SwipeRefreshLayout) findViewById(R.id.swipe); swipeView.setEnabled(false); toolbar.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if (Helpers.isOnline(ShareActivity2.this)) { Intent intent = new Intent(ShareActivity2.this, MainActivity.class); startActivityForResult(intent, 100); overridePendingTransition(0, 0); } else { Snackbar.make(swipeView, R.string.no_internet, Snackbar.LENGTH_LONG).show(); } } }); podDomain = ((App) getApplication()).getSettings().getPodDomain(); fab = (com.getbase.floatingactionbutton.FloatingActionsMenu) findViewById(R.id.fab_expand_menu_button); fab.setVisibility(View.GONE); webView = (WebView) findViewById(R.id.webView); webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY); WebSettings wSettings = webView.getSettings(); wSettings.setJavaScriptEnabled(true); wSettings.setBuiltInZoomControls(true); if (Build.VERSION.SDK_INT >= 21) wSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW); /* * WebViewClient */ webView.setWebViewClient(new WebViewClient() { public boolean shouldOverrideUrlLoading(WebView view, String url) { Log.d(TAG, url); if (!url.contains(podDomain)) { Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); startActivity(i); return true; } return false; } public void onPageFinished(WebView view, String url) { Log.i(TAG, "Finished loading URL: " + url); } }); /* * WebChromeClient */ webView.setWebChromeClient(new WebChromeClient() { public void onProgressChanged(WebView wv, int progress) { progressBar.setProgress(progress); if (progress > 0 && progress <= 60) { Helpers.getNotificationCount(wv); } if (progress > 60) { Helpers.hideTopBar(wv); } if (progress == 100) { progressBar.setVisibility(View.GONE); } else { progressBar.setVisibility(View.VISIBLE); } } @Override public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) { if (mFilePathCallback != null) mFilePathCallback.onReceiveValue(null); mFilePathCallback = filePathCallback; Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (takePictureIntent.resolveActivity(getPackageManager()) != null) { // Create the File where the photo should go File photoFile = null; try { photoFile = createImageFile(); takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath); } catch (IOException ex) { // Error occurred while creating the File Snackbar.make(getWindow().findViewById(R.id.drawer_layout), "Unable to get image", Snackbar.LENGTH_SHORT).show(); } // 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); startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE); return true; } }); Intent intent = getIntent(); final Bundle extras = intent.getExtras(); String action = intent.getAction(); if (Intent.ACTION_SEND.equals(action)) { webView.setWebViewClient(new WebViewClient() { public void onPageFinished(WebView view, String url) { if (extras.containsKey(Intent.EXTRA_TEXT) && extras.containsKey(Intent.EXTRA_SUBJECT)) { final String extraText = (String) extras.get(Intent.EXTRA_TEXT); final String extraSubject = (String) extras.get(Intent.EXTRA_SUBJECT); webView.setWebViewClient(new WebViewClient() { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { finish(); Intent i = new Intent(ShareActivity2.this, MainActivity.class); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(i); overridePendingTransition(0, 0); return false; } }); webView.loadUrl("javascript:(function() { " + "document.getElementsByTagName('textarea')[0].style.height='110px'; " + "document.getElementsByTagName('textarea')[0].innerHTML = '**[" + extraSubject + "]** " + extraText + " *[shared with #DiasporaWebApp]*'; " + " if(document.getElementById(\"main_nav\")) {" + " document.getElementById(\"main_nav\").parentNode.removeChild(" + " document.getElementById(\"main_nav\"));" + " } else if (document.getElementById(\"main-nav\")) {" + " document.getElementById(\"main-nav\").parentNode.removeChild(" + " document.getElementById(\"main-nav\"));" + " }" + "})();"); } } }); } if (savedInstanceState == null) { if (Helpers.isOnline(ShareActivity2.this)) { webView.loadUrl("https://" + podDomain + "/status_messages/new"); } else { Snackbar.make(getWindow().findViewById(R.id.drawer_layout), R.string.no_internet, Snackbar.LENGTH_SHORT).show(); } } } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode != INPUT_FILE_REQUEST_CODE || mFilePathCallback == null) { super.onActivityResult(requestCode, resultCode, data); return; } Uri[] results = null; if (resultCode == RESULT_OK) { if (data == null) { if (mCameraPhotoPath != null) { results = new Uri[] { Uri.parse(mCameraPhotoPath) }; } } else { String dataString = data.getDataString(); if (dataString != null) { results = new Uri[] { Uri.parse(dataString) }; } } } mFilePathCallback.onReceiveValue(results); mFilePathCallback = null; } private File createImageFile() throws IOException { String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()); String imageFileName = "JPEG_" + timeStamp + "_"; File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES); return File.createTempFile(imageFileName, /* prefix */ ".jpg", /* suffix */ storageDir /* directory */ ); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_compose, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.action_exit) { moveTaskToBack(true); } return super.onOptionsItemSelected(item); } @Override public void onBackPressed() { fab.collapse(); if (webView.canGoBack()) { webView.goBack(); setTitle(R.string.app_name); Snackbar snackbar = Snackbar.make(swipeView, R.string.confirm_exit, Snackbar.LENGTH_LONG) .setAction(R.string.yes, new View.OnClickListener() { @Override public void onClick(View view) { moveTaskToBack(true); } }); snackbar.show(); } else { Snackbar snackbar = Snackbar.make(swipeView, R.string.confirm_exit, Snackbar.LENGTH_LONG) .setAction(R.string.yes, new View.OnClickListener() { @Override public void onClick(View view) { finish(); } }); snackbar.show(); } } }