android中java.lang.IllegalStateException异常产生的原因及解决办法

原文地址：https://blog.csdn.net/u014737138/article/details/49737955

11-09 13:33:56.080: E/MediaRecorder(19865): stop called in an invalid state: 0
11-09 13:33:56.080: I/MediaRecorder(19865): stop
11-09 13:33:56.080: E/MediaRecorder(19865): stop called in an invalid state: 1
11-09 13:33:56.080: E/InputEventReceiver(19865): Exception dispatching input event.
11-09 13:33:56.080: E/MessageQueue-JNI(19865): Exception in MessageQueue callback: handleReceiveCallback
11-09 13:33:56.080: E/MessageQueue-JNI(19865): java.lang.IllegalStateException
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.media.MediaRecorder.native_stop(Native Method)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.media.MediaRecorder.stop(MediaRecorder.java:1127)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at com.jarvis.message.SoundMeter.stop(SoundMeter.java:64)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at com.jarvis.message.SoundMeter.start(SoundMeter.java:38)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at com.jarvis.user.RusumeReadView.start(RusumeReadView.java:522)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at com.jarvis.user.RusumeReadView.access$26(RusumeReadView.java:520)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at com.jarvis.user.RusumeReadView$17.onTouch(RusumeReadView.java:469)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.View.dispatchTouchEvent(View.java:8287)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2324)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2011)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2345)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1708)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.app.Activity.dispatchTouchEvent(Activity.java:2797)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2306)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.View.dispatchPointerEvent(View.java:8483)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4291)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4157)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3662)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3715)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3681)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3791)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3689)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3848)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3662)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3715)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3681)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3689)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3662)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5978)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5952)
11-09 13:33:56.080: E/MessageQueue-JNI(19865):  at android.view.ViewRootImpl.enqueueInputEvent(ViewRootIm

出现这个问题真的很难受，搞了好久，其实不同的机型有不同的效果，我在魅族 手机 华硕手机  华为p8上都没有出现这样的问题

在小米2s 在华为荣耀7 上都出现了这样的bug  

接下来是分析真正的问题原因所在 解决办法很简单，就是捕获这个异常，因为是空的，再重新new下，然后接着释放就可以了

IllegalStateException这个异常它是指“非法的状态”。

android的MediaRecorder 和MediaPlayer API中用到了JNI，也就是我们的java代码是要调用native的C++方法的

（MediaRecorder ，MediaPlayer 是用c++实现的），

出现这个异常，就是因为我们java里面的MediaRecorder ，MediaPlayer 对象的状态和native的对象状态发生了不一致。

问题的本质就是这样的，那什么叫状态不一致，我们得用代码中来解析下才能看的懂了：

使用的时候我们应该都知道，MediaRecorder 和MediaPlayer 用的方法有哪些了

if (mMediaPlayer.isPlaying()) {
                mMediaPlayer.stop();
            }
            mMediaPlayer.reset();
            mMediaPlayer.setDataSource(name);
            mMediaPlayer.prepare();
            mMediaPlayer.start();

if (mRecorder == null) {
    mRecorder = new MediaRecorder();
    mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    mRecorder.setOutputFile(UtilsForChat.getMusicFilePath(context, name));
    try {
        mRecorder.prepare();
        mRecorder.start();

        mEMA = 0.0;
    } catch (IllegalStateException e) {
        System.out.print(e.getMessage());
    } catch (IOException e) {
        System.out.print(e.getMessage());
    }

}

mRecorder.stop();
mRecorder.release();

我相信大家都对这些方法都不陌生的，只是需要我们知道他们的顺序，但是仅仅知道顺序肯定是没有用的，

因为你照样会产生上面的错误  比如专业的错误：

切换录像暂停过快导致stop failed. java.lang.RuntimeException: stop failed. at android.media.MediaRecorder.stop(Native Method) 原因如下： 在调用start()后马上调用stop(),时由于没有生成有效的音频或是视频数据。解决方法：让线程睡眠一定的时间，在测试后发现1秒几乎是最短时间。