Android WebView Video完全详解(第一篇)-Android开发人员
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http://blog.csdn.net/u014513456/article/details/54381361
Author:ruanjianjiagou@163.com背景
最近公司某项功能需要WebView加载H5的Video,搜索很多资料后发现很多问题,都是关键代码片段,因为每个项目每个人产生的问题不同,Video在webview中加载不出来原因很多,可能是客户端少了参数,也可能是前端出了问题,经过研究后对Android WebView 加载H5Video标签做此详解。
前端人员需要操作事项传送门
Android WebView Video完全详解(第二篇)-H5前端开发人员
http://blog.csdn.net/u014513456/article/details/54381527
需要注意的几个点
- video 播放有两种状态,在原来组件的位置直接播放,全屏播放。
- IOS客户端对H5 Video标签做了特殊处理,即H5直接用video标签即可,但是Android客户端需要特殊JS处理,所以前端开发需要注意,在下面代码段会划重点。
- AndroidManifest.xml中Activity需要开加速,需要全屏设置需要设置configChanges
- Video可以在Fragment中或者Activity中,但多个Fragment中共用一个Activity如果全屏播放建议考虑横屏时生命周期,如果单开Activity加载WebView会更加清爽。
Anroid 客户端画重点
- settings相关的设置
@TargetApi(Build.VERSION_CODES.HONEYCOMB) private void setUpWebViewDefaults(WebView webView) { WebSettings settings = webView.getSettings(); // Enable Javascript settings.setJavaScriptEnabled(true); // Use WideViewport and Zoom out if there is no viewport defined settings.setUseWideViewPort(true); settings.setLoadWithOverviewMode(true); // Enable pinch to zoom without the zoom buttons settings.setBuiltInZoomControls(false); // Allow use of Local Storage settings.setDomStorageEnabled(true); if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) { // Hide the zoom controls for HONEYCOMB+ settings.setDisplayZoomControls(false); } // Enable remote debugging via chrome://inspect if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { WebView.setWebContentsDebuggingEnabled(true); } webView.setWebViewClient(new WebViewClient()); }
- WebChromeClient 相关设置
void setChromeClient() { mWebView.setWebChromeClient(new WebChromeClient() { @Override public Bitmap getDefaultVideoPoster() { if (this == null) { return null; } //这个地方是加载h5的视频列表 默认图 点击前的视频图 return BitmapFactory.decodeResource(getApplicationContext().getResources(), R.mipmap.ic_launcher); } @Override public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback) { // if a view already exists then immediately terminate the new one if (mCustomView != null) { onHideCustomView(); return; } // 1. Stash the current state mCustomView = view; mOriginalSystemUiVisibility = getWindow().getDecorView().getSystemUiVisibility(); mOriginalOrientation = getRequestedOrientation(); // 2. Stash the custom view callback mCustomViewCallback = callback; // 3. Add the custom view to the view hierarchy FrameLayout decor = (FrameLayout) getWindow().getDecorView(); decor.addView(mCustomView, new FrameLayout.LayoutParams( ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)); // 4. Change the state of the window getWindow().getDecorView().setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_IMMERSIVE); setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); } @Override public void onHideCustomView() { // 1. Remove the custom view FrameLayout decor = (FrameLayout) getWindow().getDecorView(); decor.removeView(mCustomView); mCustomView = null; // 2. Restore the state to it's original form getWindow().getDecorView() .setSystemUiVisibility(mOriginalSystemUiVisibility); setRequestedOrientation(mOriginalOrientation); // 3. Call the custom view callback mCustomViewCallback.onCustomViewHidden(); mCustomViewCallback = null; } }); }
如果是Activity中就三步走
initView(); //初始化webviewsetUpWebViewDefaults(mWebView); //设置settingssetChromeClient(); //设置chromeClientmWebView.loadUrl("file:///android_asset/www/index.html");
大功告成
是啊只给代码段 ,我怎么知道往哪里拼~~~~
我喜欢直接拷贝啦~
走你~
package open.ppdai.com.webviewh5video;import android.annotation.TargetApi;import android.app.Activity;import android.content.pm.ActivityInfo;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Build;import android.os.Bundle;import android.os.Handler;import android.view.View;import android.view.ViewGroup;import android.webkit.WebChromeClient;import android.webkit.WebSettings;import android.webkit.WebView;import android.webkit.WebViewClient;import android.widget.FrameLayout;/** * Email:ruanjianjiagou@163.com * * @data:17/1/12 上午11:16 * @Description:${todo} * */public class MainActivity extends Activity { private WebView mWebView; private View mCustomView; private int mOriginalSystemUiVisibility; private int mOriginalOrientation; private WebChromeClient.CustomViewCallback mCustomViewCallback; protected FrameLayout mFullscreenContainer; private Handler mHandler; public MainActivity() { mHandler = new Handler(); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); setUpWebViewDefaults(mWebView); setChromeClient(); mWebView.loadUrl("file:///android_asset/www/index.html"); //这个地方是本地的assets下的h5文件//android开发人员直接拿这个标准的文件去看是否能从当前页面播放,是否能全屏播放 } private void initView() { mWebView = (WebView) findViewById(R.id.webview); } void setChromeClient() { mWebView.setWebChromeClient(new WebChromeClient() { @Override public Bitmap getDefaultVideoPoster() { if (this == null) { return null; } //这个地方是加载h5的视频列表 默认图 点击前的视频图 return BitmapFactory.decodeResource(getApplicationContext().getResources(), R.mipmap.ic_launcher); } @Override public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback) { // if a view already exists then immediately terminate the new one if (mCustomView != null) { onHideCustomView(); return; } // 1. Stash the current state mCustomView = view; mOriginalSystemUiVisibility = getWindow().getDecorView().getSystemUiVisibility(); mOriginalOrientation = getRequestedOrientation(); // 2. Stash the custom view callback mCustomViewCallback = callback; // 3. Add the custom view to the view hierarchy FrameLayout decor = (FrameLayout) getWindow().getDecorView(); decor.addView(mCustomView, new FrameLayout.LayoutParams( ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)); // 4. Change the state of the window getWindow().getDecorView().setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_IMMERSIVE); setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); } @Override public void onHideCustomView() { // 1. Remove the custom view FrameLayout decor = (FrameLayout) getWindow().getDecorView(); decor.removeView(mCustomView); mCustomView = null; // 2. Restore the state to it's original form getWindow().getDecorView() .setSystemUiVisibility(mOriginalSystemUiVisibility); setRequestedOrientation(mOriginalOrientation); // 3. Call the custom view callback mCustomViewCallback.onCustomViewHidden(); mCustomViewCallback = null; } }); } @TargetApi(Build.VERSION_CODES.HONEYCOMB) private void setUpWebViewDefaults(WebView webView) { WebSettings settings = webView.getSettings(); // Enable Javascript settings.setJavaScriptEnabled(true); // Use WideViewport and Zoom out if there is no viewport defined settings.setUseWideViewPort(true); settings.setLoadWithOverviewMode(true); // Enable pinch to zoom without the zoom buttons settings.setBuiltInZoomControls(false); // Allow use of Local Storage settings.setDomStorageEnabled(true); if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) { // Hide the zoom controls for HONEYCOMB+ settings.setDisplayZoomControls(false); } // Enable remote debugging via chrome://inspect if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { WebView.setWebContentsDebuggingEnabled(true); } webView.setWebViewClient(new WebViewClient()); }}
布局文件里面就一个webview 如果不想写直接去下载代码唠~
看到这里 ,如果你的webview还是没有加载出Video来,那你直接把这这个demo运行结果扔给前端,并且把第二篇文章给前端人员看好了
戳我下载demo 直接改下load的url就能测试下前端代码唠~~
戳戳戳~戳走bug~
http://download.csdn.net/download/u014513456/9736220
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