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POthe application stopped unexpectedly when play sound
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2013-06-23T12:21:58.407
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2013-06-23T19:09:24.833
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<blockquote> I created new Android App as it display static information , i had created html5 and i call html5 files to my webview one of my html files function is play mp3 when click on button I did my interface between html and android but when I test the project at device i had this message the application stopped unexpectedly . i had this project from tutorial this tutorial haven't extends Activity but when i removed it extends Activity error occurred " The method create(Context, int) in the type MediaPlayer is not applicable for the arguments (WebAppInterface, int) " . </blockquote> <pre><code>public class WebAppInterface extends Activity { Context mContext; MediaPlayer mp; WebAppInterface(Context c) { mContext = c; } @JavascriptInterface public void playsound() { mp=MediaPlayer.create(WebAppInterface.this, R.raw.sound); } </code></pre> } <pre><code> <input type="button" value="play mp3" onClick="playmp3()" /> <script type="text/javascript"> function playmp3() { Android.playsound(); } </script> </code></pre> <blockquote> 06-23 15:46:20.250: E/AndroidRuntime(338): FATAL EXCEPTION: WebViewCoreThread 06-23 15:46:20.250: E/AndroidRuntime(338): java.lang.NullPointerException 06-23 15:46:20.250: E/AndroidRuntime(338): at android.content.ContextWrapper.getResources(ContextWrapper.java:80) 06-23 15:46:20.250: E/AndroidRuntime(338): at android.media.MediaPlayer.create(MediaPlayer.java:641) 06-23 15:46:20.250: E/AndroidRuntime(338): at com.ramadan.WebAppInterface.showToast(WebAppInterface.java:23) 06-23 15:46:20.250: E/AndroidRuntime(338): at android.webkit.WebViewCore.nativeTouchUp(Native Method) 06-23 15:46:20.250: E/AndroidRuntime(338): at android.webkit.WebViewCore.nativeTouchUp(Native Method) 06-23 15:46:20.250: E/AndroidRuntime(338): at android.webkit.WebViewCore.access$3300(WebViewCore.java:52) 06-23 15:46:20.250: E/AndroidRuntime(338): at android.webkit.WebViewCore$EventHub$1.handleMessage(WebViewCore.java:1150) 06-23 15:46:20.250: E/AndroidRuntime(338): at android.os.Handler.dispatchMessage(Handler.java:99) 06-23 15:46:20.250: E/AndroidRuntime(338): at android.os.Looper.loop(Looper.java:123) 06-23 15:46:20.250: E/AndroidRuntime(338): at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:621) 06-23 15:46:20.250: E/AndroidRuntime(338): at java.lang.Thread.run(Thread.java:1096) </blockquote>
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the application stopped unexpectedly when play sound
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