我正在研究一个 webView，它可以工作，但 Flash 视频不起作用。
经过一番搜索，我找到了一个显示视频的 webview 代码。 网络视频
这是我的旧代码
private static final String LOG_TAG = "Web";
private WebView mWebView;
public static final String URL = "";
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.web);
mWebView = (WebView) findViewById(R.id.webView);
WebSettings webSettings = mWebView.getSettings();
webSettings.setSavePassword(false);
webSettings.setSaveFormData(false);
webSettings.setJavaScriptEnabled(true);
webSettings.setSupportZoom(false);
String turl = getIntent().getStringExtra(URL);
mWebView.loadUrl(turl);
;
}
@Override
public void onBackPressed() {
finish();
}
/**
* Provides a hook for calling "alert" from javascript. Useful for debugging
* your javascript.
*/
final class MyWebChromeClient extends WebChromeClient {
@Override
public boolean onJsAlert(WebView view, String url, String message,
JsResult result) {
Log.d(LOG_TAG, message);
result.confirm();
return true;
}
}
所以我用源代码中的 mainactivity 替换了它并添加了
String turl = getIntent().getStringExtra(URL);
和
public static final String URL = "";
并进行了一些更改，因此它加载了我使用的类名
所以现在我有了这个
private WebView webView;
public static final String URL = "";
private FrameLayout customViewContainer;
private WebChromeClient.CustomViewCallback customViewCallback;
private View mCustomView;
private myWebChromeClient mWebChromeClient;
private myWebViewClient mWebViewClient;
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
customViewContainer = (FrameLayout) findViewById(R.id.customViewContainer);
webView = (WebView) findViewById(R.id.webView);
mWebViewClient = new myWebViewClient();
webView.setWebViewClient(mWebViewClient);
mWebChromeClient = new myWebChromeClient();
webView.setWebChromeClient(mWebChromeClient);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setAppCacheEnabled(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setSaveFormData(true);
String turl = getIntent().getStringExtra(URL);
webView.loadUrl(turl);
}
public boolean inCustomView() {
return (mCustomView != null);
}
public void hideCustomView() {
mWebChromeClient.onHideCustomView();
}
@Override
protected void onPause() {
super.onPause(); //To change body of overridden methods use File | Settings | File Templates.
webView.onPause();
}
@Override
protected void onResume() {
super.onResume(); //To change body of overridden methods use File | Settings | File Templates.
webView.onResume();
}
@Override
protected void onStop() {
super.onStop(); //To change body of overridden methods use File | Settings | File Templates.
if (inCustomView()) {
hideCustomView();
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (inCustomView()) {
hideCustomView();
return true;
}
if ((mCustomView == null) && webView.canGoBack()) {
webView.goBack();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
class myWebChromeClient extends WebChromeClient {
private Bitmap mDefaultVideoPoster;
private View mVideoProgressView;
@Override
public void onShowCustomView(View view, int requestedOrientation, CustomViewCallback callback) {
onShowCustomView(view, callback); //To change body of overridden methods use File | Settings | File Templates.
}
@Override
public void onShowCustomView(View view,CustomViewCallback callback) {
// if a view already exists then immediately terminate the new one
if (mCustomView != null) {
callback.onCustomViewHidden();
return;
}
mCustomView = view;
webView.setVisibility(View.GONE);
customViewContainer.setVisibility(View.VISIBLE);
customViewContainer.addView(view);
customViewCallback = callback;
}
@Override
public View getVideoLoadingProgressView() {
if (mVideoProgressView == null) {
LayoutInflater inflater = LayoutInflater.from(Web.this);
mVideoProgressView = inflater.inflate(R.layout.video_progress, null);
}
return mVideoProgressView;
}
@Override
public void onHideCustomView() {
super.onHideCustomView(); //To change body of overridden methods use File | Settings | File Templates.
if (mCustomView == null)
return;
webView.setVisibility(View.VISIBLE);
customViewContainer.setVisibility(View.GONE);
// Hide the custom view.
mCustomView.setVisibility(View.GONE);
// Remove the custom view from its container.
customViewContainer.removeView(mCustomView);
customViewCallback.onCustomViewHidden();
mCustomView = null;
}
}
class myWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return super.shouldOverrideUrlLoading(view, url); //To change body of overridden methods use File | Settings | File Templates.
}
}
我将此代码用于我的按钮以在 webview 中打开 url
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
Intent k = new Intent(this, Web.class);
k.putExtra(com.papers.test.Web.URL,
"http://www.telegraaf.mobi");
startActivity(k);
break;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.onlinekranten);
View secondButton = findViewById(R.id.button1);
secondButton.setOnClickListener(this);
}
在我的旧 web.class 中，这工作得很好，但是现在当我按下按钮时，我得到了一个 fc，有人可以帮我解决这个问题吗？
日志猫
06-07 12:38:55.310: E/AndroidRuntime(3236): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.papers.test/com.papers.test.Web}: java.lang.NullPointerException