感谢大家的帮助，事实证明我在录制和播放按钮的文件路径中包含了一个不存在的目录。
好的，这是合约。
我为他们的AudioCapture类here使用了Google的示例代码，用于我正在为一个类做的项目。我正在创建一个音板应用，您应该可以录制4种不同的声音，并播放它们。
我的问题围绕着我的pClick和rClick函数，我有理由相信它与我的Button tempButt行有关。
感谢您花时间阅读本文，并可能尝试帮助解决我的问题。 ☺
我收到的错误是：
更新
04-14 03:16:29.639 22570-22570/com.example.oreoman.failuredude D/OpenGLRenderer: Enabling debug mode 0
04-14 03:16:31.358 22570-22570/com.example.oreoman.failuredude E/AudioRecordTest: prepare() failed
04-14 03:16:31.358 22570-22570/com.example.oreoman.failuredude E/MediaRecorder: start called in an invalid state: 4
04-14 03:16:31.359 22570-22570/com.example.oreoman.failuredude D/AndroidRuntime: Shutting down VM
04-14 03:16:31.359 22570-22570/com.example.oreoman.failuredude W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x41702d40)
04-14 03:16:31.367 22570-22570/com.example.oreoman.failuredude E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.oreoman.failuredude, PID: 22570
java.lang.IllegalStateException: Could not execute method of the activity
at android.view.View$1.onClick(View.java:3851)
at android.view.View.performClick(View.java:4466)
at android.view.View$PerformClick.run(View.java:18537)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5102)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at android.view.View$1.onClick(View.java:3846)
at android.view.View.performClick(View.java:4466)
at android.view.View$PerformClick.run(View.java:18537)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5102)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException
at android.media.MediaRecorder.start(Native Method)
at com.example.oreoman.failuredude.AudioRecordTest.startRecording(AudioRecordTest.java:120)
at com.example.oreoman.failuredude.AudioRecordTest.onRecord(AudioRecordTest.java:35)
at com.example.oreoman.failuredude.AudioRecordTest.rClick(AudioRecordTest.java:131)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at android.view.View$1.onClick(View.java:3846)
at android.view.View.performClick(View.java:4466)
at android.view.View$PerformClick.run(View.java:18537)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5102)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
这是我的java文件：
package com.example.oreoman.failuredude;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.widget.Button;
import android.view.View;
import android.util.Log;
import android.media.MediaRecorder;
import android.media.MediaPlayer;
import java.io.IOException;
public class AudioRecordTest extends Activity
{
private static final String LOG_TAG = "AudioRecordTest";
private static String mFileA = null;
private static String mFileB = null;
private static String mFileC = null;
private static String mFileD = null;
boolean mStartPlaying = true;
boolean mStartRecording = true;
//private Button tempButt = null;
private MediaRecorder mRecorder = null;
private MediaPlayer mPlayer = null;
private void onRecord(boolean start, String theOne) {
if (start) {
startRecording(theOne);
} else {
stopRecording();
}
}
private void onPlay(boolean start, String theOne) {
if (start) {
startPlaying(theOne);
} else {
stopPlaying();
}
}
private void startPlaying(String theOne) {
mFileA = Environment.getExternalStorageDirectory().getAbsolutePath();
mPlayer = new MediaPlayer();
try {
switch(theOne){
case "mPlayA":
mFileA += "/dakotaApp/audio1.mp4";
mPlayer.setDataSource(mFileA);
break;
case "mPlayB":
mFileB = mFileA;
mFileB += "/dakotaApp/audio1.mp4";
mPlayer.setDataSource(mFileB);
break;
case "mPlayC":
mFileC = mFileA;
mFileC += "/dakotaApp/audio1.mp4";
mPlayer.setDataSource(mFileC);
break;
case "mPlayD":
mFileD = mFileA;
mFileD += "/dakotaApp/audio1.mp4";
mPlayer.setDataSource(mFileD);
break;
}
mPlayer.prepare();
mPlayer.start();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed");
}
}
private void stopPlaying() {
mPlayer.release();
mPlayer = null;
}
private void startRecording(String theOne) {
mFileA = Environment.getExternalStorageDirectory().getAbsolutePath();
mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
switch(theOne){
case "mRecordA":
mFileA += "/dakotaApp/audio1.mp4";
mRecorder.setOutputFile(mFileA);
break;
case "mRecordB":
mFileB = mFileA;
mFileB += "/dakotaApp/audio1.mp4";
mRecorder.setOutputFile(mFileB);
break;
case "mRecordC":
mFileC = mFileA;
mFileC += "/dakotaApp/audio1.mp4";
mRecorder.setOutputFile(mFileC);
break;
case "mRecordD":
mFileD = mFileA;
mFileD += "/dakotaApp/audio1.mp4";
mRecorder.setOutputFile(mFileD);
break;
}
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
try {
mRecorder.prepare();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed");
}
mRecorder.start();
}
private void stopRecording() {
mRecorder.stop();
mRecorder.release();
mRecorder = null;
}
public void rClick(View v) {
String theOne = v.getResources().getResourceEntryName(v.getId());
onRecord(mStartRecording, theOne);
switch(theOne) {
case "mRecordA":
Button tempButt = (Button)findViewById(R.id.mRecordA);
if(mStartRecording) tempButt.setText("Stop Recording");
else tempButt.setText("Start Recording");
break;
case "mRecordB":
tempButt = (Button)findViewById(R.id.mRecordB);
if(mStartRecording) tempButt.setText("Stop Recording");
else tempButt.setText("Start Recording");
break;
case "mRecordC":
tempButt = (Button)findViewById(R.id.mRecordC);
if(mStartRecording) tempButt.setText("Stop Recording");
else tempButt.setText("Start Recording");
break;
case "mRecordD":
tempButt = (Button)findViewById(R.id.mRecordD);
if(mStartRecording) tempButt.setText("Stop Recording");
else tempButt.setText("Start Recording");
break;
}
mStartRecording = !mStartRecording;
}
public void pClick(View v) {
String theOne = v.getResources().getResourceEntryName(v.getId());
onPlay(mStartPlaying, theOne);
switch(theOne) {
case "mPlayA":
Button tempButt = (Button)findViewById(R.id.mPlayA);
if(mStartRecording) tempButt.setText("Stop Playing");
else tempButt.setText("Start Playing");
break;
case "mPlayB":
tempButt = (Button)findViewById(R.id.mPlayB);
if(mStartRecording) tempButt.setText("Stop Playing");
else tempButt.setText("Start Playing");
break;
case "mPlayC":
tempButt = (Button)findViewById(R.id.mPlayC);
if(mStartRecording) tempButt.setText("Stop Playing");
else tempButt.setText("Start Playing");
break;
case "mPlayD":
tempButt = (Button)findViewById(R.id.mPlayD);
if(mStartRecording) tempButt.setText("Stop Playing");
else tempButt.setText("Start Playing");
break;
}
mStartPlaying = !mStartPlaying;
}
@Override
public void onPause() {
super.onPause();
if (mRecorder != null) {
mRecorder.release();
mRecorder = null;
}
if (mPlayer != null) {
mPlayer.release();
mPlayer = null;
}
}
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_audio_record_test);
}
}
活动文件：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".AudioRecordTest">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Dakota's Awesome\nSuper Fun App of Sound!"
android:id="@+id/textView"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:textAlignment="center" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start recording"
android:id="@+id/mRecordA"
android:layout_below="@+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="70dp"
android:onClick="rClick" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start playing"
android:id="@+id/mPlayA"
android:layout_alignTop="@+id/mRecordA"
android:layout_marginLeft="220dp"
android:onClick="pClick" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start recording"
android:id="@+id/mRecordB"
android:layout_below="@+id/mRecordA"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="50dp"
android:onClick="rClick" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start playing"
android:id="@+id/mPlayB"
android:layout_alignTop="@+id/mRecordB"
android:layout_marginLeft="220dp"
android:onClick="pClick" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start recording"
android:id="@+id/mRecordC"
android:layout_below="@+id/mRecordB"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="50dp"
android:onClick="rClick" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start playing"
android:id="@+id/mPlayC"
android:layout_alignTop="@+id/mRecordC"
android:layout_marginLeft="220dp"
android:onClick="pClick" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start recording"
android:id="@+id/mRecordD"
android:layout_below="@+id/mRecordC"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="50dp"
android:onClick="rClick" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start playing"
android:id="@+id/mPlayD"
android:layout_alignTop="@+id/mRecordD"
android:layout_marginLeft="220dp"
android:onClick="pClick" />
</RelativeLayout>
最后，清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.oreoman.failuredude" >
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme" >
<activity android:name=".AudioRecordTest" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
答案 0 :(得分：1)
这是你的例外而不是你提到的那个：
引起：android.media.MediaRecorder.start（Native Method）中的java.lang.IllegalStateException 在com.example.oreoman.failuredude.AudioRecordTest.startRecording（AudioRecordTest.j ava：120）
检查mRecorder.prepare（）;抛出一个例外。如果有，请修正错误。
检查setOutputFile（）中的路径是否指向现有文件。
检查清单中是否有此权限：
<uses-permission android:name="android.permission.RECORD_AUDIO" />
答案 1 :(得分：0)
尝试以下代码
jmeter.bat