package com.etesync.syncadapter.ui; import android.annotation.TargetApi; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.KeyEvent; import android.view.View; import android.webkit.WebChromeClient; import android.webkit.WebResourceError; import android.webkit.WebResourceRequest; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.ProgressBar; import com.etesync.syncadapter.Constants; import com.etesync.syncadapter.R; public class WebViewActivity extends AppCompatActivity { private static final String KEY_URL = "url"; private static final String QUERY_KEY_EMBEDDED = "embedded"; private WebView mWebView; private ProgressBar mProgressBar; private Toolbar mToolbar; public static void openUrl(Context context, Uri uri) { Intent intent = new Intent(context, WebViewActivity.class); intent.putExtra(WebViewActivity.KEY_URL, uri); context.startActivity(intent); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_webview); mToolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(mToolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); Uri uri = getIntent().getParcelableExtra(KEY_URL); uri = addQueryParams(uri); mWebView = (WebView) findViewById(R.id.webView); mProgressBar = (ProgressBar) findViewById(R.id.progressBar); mWebView.getSettings().setJavaScriptEnabled(true); mWebView.loadUrl(uri.toString()); mWebView.setWebViewClient(new WebViewClient() { @Override public void onPageFinished(WebView view, String url) { setTitle(view.getTitle()); } @SuppressWarnings("deprecation") @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { return shouldOverrideUrl(Uri.parse(url)); } @TargetApi(Build.VERSION_CODES.LOLLIPOP) @Override public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) { return shouldOverrideUrl(request.getUrl()); } @SuppressWarnings("deprecation") @Override public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { loadErrorPage(failingUrl); } @TargetApi(Build.VERSION_CODES.LOLLIPOP) @Override public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) { loadErrorPage(request.getUrl().toString()); } }); mWebView.setWebChromeClient(new WebChromeClient() { public void onProgressChanged(WebView view, int progress) { mToolbar = (Toolbar) findViewById(R.id.toolbar); if (progress == 100) { mToolbar.setTitle(view.getTitle()); mProgressBar.setVisibility(View.INVISIBLE); } else { mToolbar.setTitle(R.string.loading); mProgressBar.setVisibility(View.VISIBLE); mProgressBar.setProgress(progress); } } }); } private Uri addQueryParams(Uri uri) { return uri.buildUpon().appendQueryParameter(QUERY_KEY_EMBEDDED, "1").build(); } private void loadErrorPage(String failingUrl) { String htmlData = "" + getString(R.string.loading_error_title) + "" + "" + "" + "
" + "" + getString(R.string.loading_error_content) + "" + ""; mWebView.loadDataWithBaseURL("about:blank", htmlData, "text/html", "UTF-8", null); mWebView.invalidate(); } private boolean shouldOverrideUrl(Uri uri) { if (Constants.webUri.getHost().equals(uri.getHost())) { if (uri.getQueryParameter(QUERY_KEY_EMBEDDED) != null) { return false; } else { uri = addQueryParams(uri); mWebView.loadUrl(uri.toString()); return true; } } else { startActivity(new Intent(Intent.ACTION_VIEW, uri)); return true; } } @Override protected void onSaveInstanceState(Bundle outState) { mWebView.saveState(outState); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if (mWebView.canGoBack()) { mWebView.goBack(); return true; } } return super.onKeyDown(keyCode, event); } }