WebView and HTML5 <video>
I'm piecing together a cheapo app that amongst other things "frames" some of our websites... Pretty simple with the WebViewClient. until I hit the video.
The video is done as HTML5 elements, and these work fine and dandy on Chrome, iPhones, and now that we fixed the encoding issues it works great on Android in the native browser.
Now the rub: WebView doesn't like it. At all. I can click on the poster image, and nothing happens.
Googling, I found this which is close, but seems to be based on a 'link' (as in a href...) instead of a video element. (onDownloadListener does not appear to get invoked on video elements...)
I also see references to overriding onShowCustomView, but that seems to not get called on video elements... nor does shouldOverrideUrlLoading..
I would rather not get into "pull xml from the server, reformat it in the app".. by keeping the story layout on the server, I can control the content a bit better without forcing people to keep updating an app. So if I can convince WebView to handle tags like the native browser, that would be best.
I'm clearly missing something obvious.. but I have no clue what.
Solution 1:
I answer this topic just in case someone read it and is interested on the result. It is possible to view a video element (video html5 tag) within a WebView, but I must say I had to deal with it for few days. These are the steps I had to follow so far:
-Find a properly encoded video
-When initializing the WebView, set the JavaScript, Plug-ins the WebViewClient and the WebChromeClient.
url = new String("http://broken-links.com/tests/video/");
mWebView = (WebView) findViewById(R.id.webview);
mWebView.setWebChromeClient(chromeClient);
mWebView.setWebViewClient(wvClient);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setPluginState(PluginState.ON);
mWebView.loadUrl(url);
-Handle the onShowCustomView in the WebChromeClient object.
@Override
public void onShowCustomView(View view, CustomViewCallback callback) {
super.onShowCustomView(view, callback);
if (view instanceof FrameLayout){
FrameLayout frame = (FrameLayout) view;
if (frame.getFocusedChild() instanceof VideoView){
VideoView video = (VideoView) frame.getFocusedChild();
frame.removeView(video);
a.setContentView(video);
video.setOnCompletionListener(this);
video.setOnErrorListener(this);
video.start();
}
}
}
-Handle the onCompletion and the onError events for the video, in order to get back to the web view.
public void onCompletion(MediaPlayer mp) {
Log.d(TAG, "Video completo");
a.setContentView(R.layout.main);
WebView wb = (WebView) a.findViewById(R.id.webview);
a.initWebView();
}
But now I should say there are still an important issue. I can play it only once. The second time I click on the video dispatcher (either the poster or some play button), it does nothing.
I would also like the video to play inside the WebView frame, instead of opening the Media Player window, but this is for me a secondary issue.
I hope it helps somebody, and I would also thank any comment or suggestion.
Saludos, terrícolas.
Solution 2:
After long research, I got this thing working. See the following code:
Test.java
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
public class Test extends Activity {
HTML5WebView mWebView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mWebView = new HTML5WebView(this);
if (savedInstanceState != null) {
mWebView.restoreState(savedInstanceState);
} else {
mWebView.loadUrl("http://192.168.1.18/xxxxxxxxxxxxxxxx/");
}
setContentView(mWebView.getLayout());
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mWebView.saveState(outState);
}
@Override
public void onStop() {
super.onStop();
mWebView.stopLoading();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (mWebView.inCustomView()) {
mWebView.hideCustomView();
// mWebView.goBack();
//mWebView.goBack();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
}
HTML%VIDEO.java
package com.ivz.idemandtest;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.AttributeSet;
import android.util.Log;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.webkit.GeolocationPermissions;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.FrameLayout;
public class HTML5WebView extends WebView {
private Context mContext;
private MyWebChromeClient mWebChromeClient;
private View mCustomView;
private FrameLayout mCustomViewContainer;
private WebChromeClient.CustomViewCallback mCustomViewCallback;
private FrameLayout mContentView;
private FrameLayout mBrowserFrameLayout;
private FrameLayout mLayout;
static final String LOGTAG = "HTML5WebView";
private void init(Context context) {
mContext = context;
Activity a = (Activity) mContext;
mLayout = new FrameLayout(context);
mBrowserFrameLayout = (FrameLayout) LayoutInflater.from(a).inflate(R.layout.custom_screen, null);
mContentView = (FrameLayout) mBrowserFrameLayout.findViewById(R.id.main_content);
mCustomViewContainer = (FrameLayout) mBrowserFrameLayout.findViewById(R.id.fullscreen_custom_content);
mLayout.addView(mBrowserFrameLayout, COVER_SCREEN_PARAMS);
// Configure the webview
WebSettings s = getSettings();
s.setBuiltInZoomControls(true);
s.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);
s.setUseWideViewPort(true);
s.setLoadWithOverviewMode(true);
// s.setSavePassword(true);
s.setSaveFormData(true);
s.setJavaScriptEnabled(true);
mWebChromeClient = new MyWebChromeClient();
setWebChromeClient(mWebChromeClient);
setWebViewClient(new WebViewClient());
setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
// enable navigator.geolocation
// s.setGeolocationEnabled(true);
// s.setGeolocationDatabasePath("/data/data/org.itri.html5webview/databases/");
// enable Web Storage: localStorage, sessionStorage
s.setDomStorageEnabled(true);
mContentView.addView(this);
}
public HTML5WebView(Context context) {
super(context);
init(context);
}
public HTML5WebView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public HTML5WebView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context);
}
public FrameLayout getLayout() {
return mLayout;
}
public boolean inCustomView() {
return (mCustomView != null);
}
public void hideCustomView() {
mWebChromeClient.onHideCustomView();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if ((mCustomView == null) && canGoBack()){
goBack();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
private class MyWebChromeClient extends WebChromeClient {
private Bitmap mDefaultVideoPoster;
private View mVideoProgressView;
@Override
public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback)
{
//Log.i(LOGTAG, "here in on ShowCustomView");
HTML5WebView.this.setVisibility(View.GONE);
// if a view already exists then immediately terminate the new one
if (mCustomView != null) {
callback.onCustomViewHidden();
return;
}
mCustomViewContainer.addView(view);
mCustomView = view;
mCustomViewCallback = callback;
mCustomViewContainer.setVisibility(View.VISIBLE);
}
@Override
public void onHideCustomView() {
System.out.println("customview hideeeeeeeeeeeeeeeeeeeeeeeeeee");
if (mCustomView == null)
return;
// Hide the custom view.
mCustomView.setVisibility(View.GONE);
// Remove the custom view from its container.
mCustomViewContainer.removeView(mCustomView);
mCustomView = null;
mCustomViewContainer.setVisibility(View.GONE);
mCustomViewCallback.onCustomViewHidden();
HTML5WebView.this.setVisibility(View.VISIBLE);
HTML5WebView.this.goBack();
//Log.i(LOGTAG, "set it to webVew");
}
@Override
public View getVideoLoadingProgressView() {
//Log.i(LOGTAG, "here in on getVideoLoadingPregressView");
if (mVideoProgressView == null) {
LayoutInflater inflater = LayoutInflater.from(mContext);
mVideoProgressView = inflater.inflate(R.layout.video_loading_progress, null);
}
return mVideoProgressView;
}
@Override
public void onReceivedTitle(WebView view, String title) {
((Activity) mContext).setTitle(title);
}
@Override
public void onProgressChanged(WebView view, int newProgress) {
((Activity) mContext).getWindow().setFeatureInt(Window.FEATURE_PROGRESS, newProgress*100);
}
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
}
}
static final FrameLayout.LayoutParams COVER_SCREEN_PARAMS =
new FrameLayout.LayoutParams( ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
}
custom_screen.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2009 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android">
<FrameLayout android:id="@+id/fullscreen_custom_content"
android:visibility="gone"
android:background="@color/black"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<LinearLayout android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout android:id="@+id/error_console"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
<FrameLayout android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
</FrameLayout>
video_loading_progress.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2009 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/progress_indicator"
android:orientation="vertical"
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ProgressBar android:id="@android:id/progress"
style="?android:attr/progressBarStyleLarge"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView android:paddingTop="5dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/loading_video" android:textSize="14sp"
android:textColor="?android:attr/textColorPrimary" />
</LinearLayout>
colors.xml
<?xml version="1.0" encoding="utf-8"?>
<!--
/* //device/apps/common/assets/res/any/http_authentication_colors.xml
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->
<!-- FIXME: Change the name of this file! It is now being used generically
for the browser -->
<resources>
<color name="username_text">#ffffffff</color>
<color name="username_edit">#ff000000</color>
<color name="password_text">#ffffffff</color>
<color name="password_edit">#ff000000</color>
<color name="ssl_text_label">#ffffffff</color>
<color name="ssl_text_value">#ffffffff</color>
<color name="white">#ffffffff</color>
<color name="black">#ff000000</color>
<color name="geolocation_permissions_prompt_background">#ffdddddd</color>
</resources>
Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Test"
android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:configChanges="orientation|keyboardHidden|keyboard">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_GPS" />
<uses-permission android:name="android.permission.ACCESS_ASSISTED_GPS" />
<uses-permission android:name="android.permission.ACCESS_LOCATION" />
</manifest>
Expecting rest of things you can understand.
Solution 3:
mdelolmo's answer was incredibly helpful, but like he said, the video only plays once and then you can't open it again.
I looked into this a bit and here is what I found, in case any weary WebView travelers like myself stumble on this post in the future.
First off, I looked at the VideoView and MediaPlayer's documentation and got a better sense of how those work. I strongly recommend those.
Then, I looked at the source code to see how the Android Browser does it. Do a page find and go look at how they handle onShowCustomView(). They keep a reference to the CustomViewCallbackand to the custom view.
With all of that, and with mdelolmo's answer in mind, when you are done with the video, all you need to do is two things. First, on the VideoView that you saved a reference to, call stopPlayback() that will release the MediaPlayer to be used later elsewhere. You can see it in the VideoView source code. Second, on the CustomViewCallback you saved a reference to call CustomViewCallback.onCustomViewHidden().
After doing those two things, you can click on the same video or any other video and it will open like before. No need to restart the entire WebView.
Hope that helps.
Solution 4:
I know this thread is several months old, but I found a solution for playing the video inside the WebView without doing it fullscreen (but still in the media player...). So far, I didn't find any hint on this in the internet so maybe this is also interesting for others. I'm still struggling on some issues (i.e. placing the media player in the right section of the screen, don't know why I'm doing it wrong but it's a relatively small issue I think...).
In the Custom ChromeClient specify LayoutParams:
// 768x512 is the size of my video
FrameLayout.LayoutParams LayoutParameters =
new FrameLayout.LayoutParams (768, 512);
My onShowCustomView method looks like this:
public void onShowCustomView(final View view, final CustomViewCallback callback) {
// super.onShowCustomView(view, callback);
if (view instanceof FrameLayout) {
this.mCustomViewContainer = (FrameLayout) view;
this.mCustomViewCallback = callback;
this.mContentView = (WebView) this.kameha.findViewById(R.id.webview);
if (this.mCustomViewContainer.getFocusedChild() instanceof VideoView) {
this.mCustomVideoView = (VideoView)
this.mCustomViewContainer.getFocusedChild();
this.mCustomViewContainer.setVisibility(View.VISIBLE);
final int viewWidth = this.mContentView.getWidth();
final int viewLeft = (viewWidth - 1024) / 2;
// get the x-position for the video (I'm porting an iPad-Webapp to Xoom,
// so I can use those numbers... you have to find your own of course...
this.LayoutParameters.leftMargin = viewLeft + 256;
this.LayoutParameters.topMargin = 128;
// just add this view so the webview underneath will still be visible,
// but apply the LayoutParameters specified above
this.kameha.addContentView(this.mCustomViewContainer,
this.LayoutParameters);
this.mCustomVideoView.setOnCompletionListener(this);
this.mCustomVideoView.setOnErrorListener(this);
// handle clicks on the screen (turning off the video) so you can still
// navigate in your WebView without having the video lying over it
this.mCustomVideoView.setOnFocusChangeListener(this);
this.mCustomVideoView.start();
}
}
}
So, I hope I could help... I too had to play around with video-Encoding and saw different kinds of using the WebView with html5 video - in the end my working code was a wild mix of different code-parts I found in the internet and some things I had to figure out by myself. It really was a pain in the a*.