无法停止录制? [英] Can't stop recording?
问题描述
可能重复:结果
停止录制和上下文
块引用>我不明白什么是错的?!
当手机铃声响起,然后开始记录。
但是,当通话结束,我得到NullPointerException异常,因为MediRecorder是空的,但录音仍在继续,直到我把一个错误的窗口。
我的问题与此相同的录音机的Widget犯规停止录制公共类调用扩展广播接收器
{
私人MediaRecorder mRecorder;
公共无效的onReceive(上下文的背景下,意图意图)
{
捆绑包= intent.getExtras();
如果(空==束)回报;
字符串状态= bundle.getString(TelephonyManager.EXTRA_STATE); 如果(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING))
{
mRecorder =新MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mRecorder.setOutputFile(/ SD卡/ Record.3gp);
mRecorder.setAudioEn codeR(MediaRecorder.AudioEn coder.AMR_NB);
尝试{mRecorder prepare();}
赶上(IOException异常五){}
mRecorder.start(); //如果我停在这里录制,那么一切都很好
/ *
尝试
{视频下载(300000);}
赶上(InterruptedException的E)
{e.printStackTrace();}
mRecorder.stop();
mRecorder.release();
mRecorder = NULL;
* / } 如果(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_IDLE))
{
如果(mRecorder!= NULL)//但是,这始终为false。如果我删除这个条件 -
{
mRecorder.stop(); // - 那么这里的NullPointerException
mRecorder.release();
mRecorder = NULL;
}
}
}
}LogCat中:
7月10日至1日:13:28.054:ERROR / AndroidRuntime(553):未捕获的处理程序:螺纹主力退出,由于未捕获的异常
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):了java.lang.RuntimeException:无法启动接收xxx.xxx.xxx.Call:显示java.lang.NullPointerException
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在android.app.ActivityThread.handleReceiver(ActivityThread.java:2646)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在android.app.ActivityThread.access $ 3100(ActivityThread.java:119)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1913)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在android.os.Handler.dispatchMessage(Handler.java:99)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在android.os.Looper.loop(Looper.java:123)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在android.app.ActivityThread.main(ActivityThread.java:4363)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在java.lang.reflect.Method.invokeNative(本机方法)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在java.lang.reflect.Method.invoke(Method.java:521)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:860)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在dalvik.system.NativeStart.main(本机方法)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):致:显示java.lang.NullPointerException
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在xxx.xxx.xxx.Call.onReceive(Call.java:49)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):在android.app.ActivityThread.handleReceiver(ActivityThread.java:2637)
七月10日至1日:13:29.134:ERROR / AndroidRuntime(553):10 ...更多
七月10日至1日:13:33.184:ERROR / audio_input(31):不支持的参数:X-PVMF /媒体输入节点/帽配置界面; valtype = key_specific_value
七月10日至1日:13:33.184:ERROR / audio_input(31):VerifyAndSetParameter失败
解决方案问题是你实例化一个新的
MediaRecorder
里面的如果
这是掩盖MediaRecorder mRecorder
类成员声明。所以更改:如果(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING))
{
MediaRecorder mRecorder =新MediaRecorder();
.....
}这样:
如果(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING))
{
mRecorder =新MediaRecorder();
.....
}Possible Duplicate:
Stop Recording and ContextI can't understand what's wrong ?!!! When the phone rings then recording starts. But when the call ends I get NullPointerException, because MediRecorder is null, but recording is still going until I shut the window with an error. My problem the same as this Sound Recorder Widget doesnt stop recording
public class Call extends BroadcastReceiver { private MediaRecorder mRecorder; public void onReceive(Context context, Intent intent) { Bundle bundle = intent.getExtras(); if(null == bundle) return; String state = bundle.getString(TelephonyManager.EXTRA_STATE); if(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING)) { mRecorder = new MediaRecorder(); mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); mRecorder.setOutputFile("/sdcard/Record.3gp";); mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); try {mRecorder.prepare();} catch (IOException e){} mRecorder.start(); // if I stop recording here, then everything is fine /* try {Thread.sleep(300000);} catch (InterruptedException e) {e.printStackTrace();} mRecorder.stop(); mRecorder.release(); mRecorder = null; */ } if(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_IDLE)) { if(mRecorder != null) // But this always false. if I remove this condition - { mRecorder.stop(); // - then here NullPointerException mRecorder.release(); mRecorder = null; } } } }
LogCat:
10-01 07:13:28.054: ERROR/AndroidRuntime(553): Uncaught handler: thread main exiting due to uncaught exception 10-01 07:13:29.134: ERROR/AndroidRuntime(553): java.lang.RuntimeException: Unable to start receiver xxx.xxx.xxx.Call: java.lang.NullPointerException 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2646) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at android.app.ActivityThread.access$3100(ActivityThread.java:119) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1913) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at android.os.Handler.dispatchMessage(Handler.java:99) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at android.os.Looper.loop(Looper.java:123) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at android.app.ActivityThread.main(ActivityThread.java:4363) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at java.lang.reflect.Method.invokeNative(Native Method) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at java.lang.reflect.Method.invoke(Method.java:521) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at dalvik.system.NativeStart.main(Native Method) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): Caused by: java.lang.NullPointerException 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at xxx.xxx.xxx.Call.onReceive(Call.java:49) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2637) 10-01 07:13:29.134: ERROR/AndroidRuntime(553): ... 10 more 10-01 07:13:33.184: ERROR/audio_input(31): unsupported parameter: x-pvmf/media-input-node/cap-config-interface;valtype=key_specific_value 10-01 07:13:33.184: ERROR/audio_input(31): VerifyAndSetParameter failed
解决方案The problem is you are instantiating a new
MediaRecorder
inside yourif
statement which is masking theMediaRecorder mRecorder
class member. So Change:if(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING)) { MediaRecorder mRecorder = new MediaRecorder(); ..... }
to this:
if(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING)) { mRecorder = new MediaRecorder(); ..... }
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