android之webview

 

最近做一个项目需要在线播放优酷,土豆 等视频，需要用到WebView.

期间遇到很多大大小小 问题：

1  无法全屏，一点击全屏就卡死白屏；

2  退出后 声音还没停止，以及程序最小化问题；

目前这两个问题算是解决了。

对于问题2 网上基本就这一个方法：

 

试了之后确实 问题解决了。

对于问题1，网上找了很久， 终于看到可以的；

附上源代码：

 

NetVideoActivity.java

 

package canton.tower.travel.VoiceAndVideo; import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import canton.tower.travel.R;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.util.Log;import android.view.View;import android.webkit.WebChromeClient;import android.webkit.WebSettings.PluginState;import android.webkit.WebSettings;import android.webkit.WebView;import android.webkit.WebViewClient;import android.widget.FrameLayout;import android.widget.Toast;public class NetVideoActivity extends Activity {private FrameLayout mFullscreenContainer;private FrameLayout mContentView;private View mCustomView = null;private WebView mWebView;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.netvideolay);Intent intent = getIntent();Bundle bundle = intent.getExtras();String str_add = "";if(bundle==null) str_add = "http://www.tudou.com/v/TM6mAN5rZNk/&resourceId=0_04_05_99/v.swf"; //else     str_add = bundle.getString("address");initViews();initWebView();Toast.makeText(this, "加载中,若无响应，请返回重试...", Toast.LENGTH_LONG).show();mWebView.loadUrl(str_add);}private void initViews() {mFullscreenContainer = (FrameLayout) findViewById(R.id.fullscreen_view);mContentView = (FrameLayout) findViewById(R.id.main_view);mWebView = (WebView) findViewById(R.id.webview);}private void initWebView() {WebSettings settings = mWebView.getSettings();settings.setJavaScriptEnabled(true);settings.setJavaScriptCanOpenWindowsAutomatically(true);settings.setPluginState(PluginState.ON);settings.setUseWideViewPort(false);settings.setAllowFileAccess(true);settings.setLoadWithOverviewMode(true);mWebView.setFitsSystemWindows(true);mWebView.setWebChromeClient(new MyWebChromeClient());mWebView.setWebViewClient(new MyWebViewClient());}class MyWebChromeClient extends WebChromeClient {private CustomViewCallback mCustomViewCallback;private int mOriginalOrientation = 1;@Overridepublic void onShowCustomView(View view, CustomViewCallback callback) {// TODO Auto-generated method stubonShowCustomView(view, mOriginalOrientation, callback);super.onShowCustomView(view, callback);}public void onShowCustomView(View view, int requestedOrientation,WebChromeClient.CustomViewCallback callback) {if (mCustomView != null) {callback.onCustomViewHidden();return;}if (getPhoneAndroidSDK() >= 14) {mFullscreenContainer.addView(view);mCustomView = view;mCustomViewCallback = callback;mOriginalOrientation = getRequestedOrientation();mContentView.setVisibility(View.INVISIBLE);mFullscreenContainer.setVisibility(View.VISIBLE);mFullscreenContainer.bringToFront();setRequestedOrientation(mOriginalOrientation);}}public void onHideCustomView() {mContentView.setVisibility(View.VISIBLE);if (mCustomView == null) {return;}mCustomView.setVisibility(View.GONE);mFullscreenContainer.removeView(mCustomView);mCustomView = null;mFullscreenContainer.setVisibility(View.GONE);try {mCustomViewCallback.onCustomViewHidden();} catch (Exception e) {}// Show the content view.setRequestedOrientation(mOriginalOrientation);}}class MyWebViewClient extends WebViewClient {@Overridepublic boolean shouldOverrideUrlLoading(WebView view, String url) {// TODO Auto-generated method stubview.loadUrl(url);return super.shouldOverrideUrlLoading(view, url);}}public static int getPhoneAndroidSDK() {// TODO Auto-generated method stubint version = 0;try {version = Integer.valueOf(android.os.Build.VERSION.SDK);} catch (NumberFormatException e) {e.printStackTrace();}return version;}private void callHiddenWebViewMethod(String name){    if( mWebView != null ){        try {            Method method = WebView.class.getMethod(name);            method.invoke(mWebView);        } catch (NoSuchMethodException e) {           // Log.e("No such method: " + name, e);        } catch (IllegalAccessException e) {           // Log.e("Illegal Access: " + name, e);        } catch (InvocationTargetException e) {            //Log.error("Invocation Target Exception: " + name, e);        }    }}@Overrideprotected void onResume() {// TODO Auto-generated method stubsuper.onResume();}@Overrideprotected void onPause() {super.onPause();//mWebView.pauseTimers();Log.e("oo", "oo");if (isFinishing()){mWebView.loadUrl("about:blank");//setContentView(new FrameLayout(this));} this.callHiddenWebViewMethod("onPause");}@Overridepublic void onBackPressed() {mWebView.loadUrl("about:blank");mWebView.clearCache(true);mWebView.clearHistory();    System.gc();  finish(); }}

netvideolayout.xml

<FrameLayout  xmlns:android="http://schemas.android.com/apk/res/android"       android:layout_width="fill_parent"         android:layout_height="fill_parent">     <FrameLayout         android:id="@+id/fullscreen_view"         android:layout_width="fill_parent"         android:layout_height="fill_parent"         android:visibility="gone" />       <FrameLayout         android:id="@+id/main_view"         android:layout_width="fill_parent"         android:layout_height="fill_parent">           <WebView             android:id="@+id/webview"             android:layout_width="fill_parent"             android:layout_height="fill_parent"            android:scrollbars="none" />      </FrameLayout >     </FrameLayout> 

 

最后在manifest.xml   application  标签里 添加 android:hardwareAccelerated="true"

 

仍存在一些问题：

1 全屏之后只能根据播放器的图标提示退出全屏， 不能按返回键退出；

2 还有一个比较蛋疼的问题， 在网络不稳定的情况下， 播放经常卡住， 一旦卡住，退出Activity 后再次进去 仍然白屏，要等待一段时间 才反应过来；

 

若哪位童鞋解决了问题，还麻烦告知，谢谢！