我正在尝试在内容提供商中保存语音功能但发生此错误
02-01 16:47:20.201: D/AndroidRuntime(11623): Shutting down VM
02-01 16:47:20.201: W/dalvikvm(11623): threadid=1: thread exiting with uncaught exception (group=0x41831da0)
02-01 16:47:20.211: E/AndroidRuntime(11623): FATAL EXCEPTION: main
02-01 16:47:20.211: E/AndroidRuntime(11623): Process: com.neu.val.activity, PID: 11623
02-01 16:47:20.211: E/AndroidRuntime(11623): java.lang.IllegalStateException: Could not execute method of the activity
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.view.View$1.onClick(View.java:3990)
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.view.View.performClick(View.java:4658)
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.view.View$PerformClick.run(View.java:19461)
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.os.Handler.handleCallback(Handler.java:733)
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.os.Handler.dispatchMessage(Handler.java:95)
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.os.Looper.loop(Looper.java:146)
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.app.ActivityThread.main(ActivityThread.java:5653)
02-01 16:47:20.211: E/AndroidRuntime(11623): at java.lang.reflect.Method.invokeNative(Native Method)
02-01 16:47:20.211: E/AndroidRuntime(11623): at java.lang.reflect.Method.invoke(Method.java:515)
02-01 16:47:20.211: E/AndroidRuntime(11623): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291)
02-01 16:47:20.211: E/AndroidRuntime(11623): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107)
02-01 16:47:20.211: E/AndroidRuntime(11623): at dalvik.system.NativeStart.main(Native Method)
02-01 16:47:20.211: E/AndroidRuntime(11623): Caused by: java.lang.reflect.InvocationTargetException
02-01 16:47:20.211: E/AndroidRuntime(11623): at java.lang.reflect.Method.invokeNative(Native Method)
02-01 16:47:20.211: E/AndroidRuntime(11623): at java.lang.reflect.Method.invoke(Method.java:515)
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.view.View$1.onClick(View.java:3985)
02-01 16:47:20.211: E/AndroidRuntime(11623): ... 11 more
02-01 16:47:20.211: E/AndroidRuntime(11623): Caused by: java.lang.NullPointerException
02-01 16:47:20.211: E/AndroidRuntime(11623): at android.content.ContentUris.parseId(ContentUris.java:85)
02-01 16:47:20.211: E/AndroidRuntime(11623): at com.neu.val.activity.CreateVoiceSample.insertFeature(CreateVoiceSample.java:181)
02-01 16:47:20.211: E/AndroidRuntime(11623): at com.neu.val.activity.CreateVoiceSample.actionBt(CreateVoiceSample.java:77)
02-01 16:47:20.211: E/AndroidRuntime(11623): ... 14 more
第181行出现错误，即此行
if (ContentUris.parseId(insert) != -1)
我注意到变量“insert”为null但是我尝试过的提供程序的值不是null ..我猜'insert'变量是这里的主要eroor但我不知道如何解决它。请帮忙......
这是发生错误的类：
CreateVoiceSample.java
public class CreateVoiceSample extends ActionBarActivity {
private Button btSpeak, btCancel, btStop, btSave;
private WaveRecorder waveRecorder;
private ProgressBar progressBar;
private TextView timerText;
private boolean stopped;
private int MAX_DURATION = 5000, progressTime, seconds;
private Timer timer;
static final String TAG = "VAP";
public String codebookString;
private long userId;
/** The recording output file. */
private static File outputFile = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC),
"recording.wav");
/**
* This is actually used to stop the record after the recording time is up
* as well.
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.recordvoice);
userId = getIntent().getLongExtra(Extras.EXTRA_USER_ID, -1);
initializeVar();
enableButtons(true, false, false, true);
}
public void initializeVar() {
btSpeak = (Button) findViewById(R.id.bSpeak);
btSave = (Button) findViewById(R.id.bSave);
btStop = (Button) findViewById(R.id.bStop);
btCancel = (Button) findViewById(R.id.bCancel);
progressBar = (ProgressBar) findViewById(R.id.progressBar1);
timerText = (TextView) findViewById(R.id.textView1);
stopped = true;
progressBar.setMax(MAX_DURATION);
progressBar.setProgress(0);
startProgress();
}
public void actionBt(View v) {
if (v.getId() == R.id.bSpeak) {
startRecord();
} else if (v.getId() == R.id.bStop) {
stopRecord();
} else if (v.getId() == R.id.bCancel) {
finish();
} else if (v.getId() == R.id.bSave) {
insertFeature(codebookString);
}
}
private void startRecord() {
// TODO Auto-generated method stub
enableButtons(false, true, false, false);
seconds = 1000;
progressTime = 0;
progressBar.setProgress(0);
timerText.setText("00:00:00");
if (outputFile.exists())
outputFile.delete();
waveRecorder = new WaveRecorder(8000);
waveRecorder.setOutputFile(outputFile.getAbsolutePath());
stopped = false;
try {
waveRecorder.prepare();
waveRecorder.start();
Toast.makeText(getApplicationContext(), "Recording started ... ",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
public void stopRecord() {
stopped = true;
waveRecorder.stop();
waveRecorder.release();
waveRecorder.reset();
timer.cancel();
Toast.makeText(getApplicationContext(), "Recording stopped..", Toast.LENGTH_SHORT).show();
calculateMfccs();
startProgress();
}
public void startProgress() {
enableButtons(true,false,true,true);
final Handler handler = new Handler();
TimerTask timerTask = new TimerTask() {
@Override
public void run() {
handler.post(new Runnable() {
@Override
public void run() {
try {
progress();
} catch (Exception e) {
// TODO Auto-generated catch block
}
}
});
}
};
timer = new Timer();
timer.schedule(timerTask, 1, 1000);
}
public void enableButtons(boolean startBt, boolean stopBt, boolean saveBt,
boolean cancelBt) {
btSpeak.setEnabled(startBt);
btStop.setEnabled(stopBt);
btSave.setEnabled(saveBt);
btCancel.setEnabled(cancelBt);
}
public void progress() {
if (!stopped) // call ui only when the progress is not stopped
{
if (progressTime < MAX_DURATION) {
runOnUiThread(new Runnable() {
@Override
public void run() {
try {
int secondsText = seconds / 1000;
progressTime = progressBar.getProgress() + 1000;
progressBar.setProgress(progressTime);
timerText.setText("00:00:0" + secondsText);
seconds += 1000;
} catch (Exception e) {
}
}
});
} else {
stopRecord();
}
}
}
private void calculateMfccs() {
new MfccTask(this).execute(outputFile.getAbsolutePath());
}
private void insertFeature(String password) {
long modeId = ((VoiceApplication)getApplication()).getModeId();
ContentValues cv = new ContentValues();
cv.put(Feature.SUBJECT_ID, 1);
cv.put(Feature.MODE_ID, 1);
cv.put(Feature.REPRESENTATION, password);
Log.i(TAG, ""+userId+""+modeId+""+password);
Uri insert = getContentResolver().insert(Feature.CONTENT_URI, cv);
Log.i(TAG, "Inserted voice features to URI: " + insert);
if (ContentUris.parseId(insert) != -1) {
finish();
} else {
Toast.makeText(this, "Could not save features!", Toast.LENGTH_LONG).show();
}
}
class MfccTask extends AsyncTask<String, Object, String> {
private ProgressDialog progressDialog;
private final Activity parentActivity;
public MfccTask(Activity parentActivity) {
this.parentActivity = parentActivity;
}
@Override
protected String doInBackground(String... params) {
String filename = params[0];
WavReader wavReader = new WavReader(filename);
Log.i(TAG, "Starting to read from file " + filename);
double[] samples = readSamples(wavReader);
Log.i(TAG, "Starting to calculate MFCC");
double[][] mfcc = calculateMfcc(samples);
FeatureVector pl = createFeatureVector(mfcc);
KMeans kmeans = doClustering(pl);
Codebook cb = createCodebook(kmeans);
Gson gson = new Gson();
String codebookJsonString = gson.toJson(cb, Codebook.class);
return codebookJsonString;
}
private Codebook createCodebook(KMeans kmeans) {
int numberClusters = kmeans.getNumberClusters();
Matrix[] centers = new Matrix[numberClusters];
for (int i = 0; i < numberClusters; i++) {
centers[i] = kmeans.getCluster(i).getCenter();
}
Codebook cb = new Codebook();
cb.setLength(numberClusters);
cb.setCentroids(centers);
return cb;
}
private KMeans doClustering(FeatureVector pl) {
long start;
KMeans kmeans = new KMeans(Constants.CLUSTER_COUNT, pl,
Constants.CLUSTER_MAX_ITERATIONS);
Log.i(TAG, "Prepared k means clustering");
start = System.currentTimeMillis();
progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
kmeans.run();
Log.i(TAG,
"Clustering finished, total time = "
+ (System.currentTimeMillis() - start) + "ms");
return kmeans;
}
private FeatureVector createFeatureVector(double[][] mfcc) {
int vectorSize = mfcc[0].length;
int vectorCount = mfcc.length;
Log.i(TAG, "Creating pointlist with dimension=" + vectorSize
+ ", count=" + vectorCount);
FeatureVector pl = new FeatureVector(vectorSize, vectorCount);
for (int i = 0; i < vectorCount; i++) {
pl.add(mfcc[i]);
}
Log.d(TAG, "Added all MFCC vectors to pointlist");
return pl;
}
private short createSample(byte[] buffer) {
short sample = 0;
// hardcoded two bytes here
short b1 = buffer[0];
short b2 = buffer[1];
b2 <<= 8;
sample = (short) (b1 | b2);
return sample;
}
private double[][] calculateMfcc(double[] samples) {
MFCC mfccCalculator = new MFCC(Constants.SAMPLERATE,
Constants.WINDOWSIZE, Constants.COEFFICIENTS, false,
Constants.MINFREQ + 1, Constants.MAXFREQ, Constants.FILTERS);
int hopSize = Constants.WINDOWSIZE / 2;
int mfccCount = (samples.length / hopSize) - 1;
double[][] mfcc = new double[mfccCount][Constants.COEFFICIENTS];
long start = System.currentTimeMillis();
for (int i = 0, pos = 0; pos < samples.length - hopSize; i++, pos += hopSize) {
mfcc[i] = mfccCalculator.processWindow(samples, pos);
if (i % 20 == 0) {
publishProgress("Calculating features...", i, mfccCount);
}
}
publishProgress("Calculating features...", mfccCount, mfccCount);
Log.i(TAG, "Calculated " + mfcc.length + " vectors of MFCCs in "
+ (System.currentTimeMillis() - start) + "ms");
return mfcc;
}
private double[] readSamples(WavReader wavReader) {
int sampleSize = wavReader.getFrameSize();
int sampleCount = wavReader.getPayloadLength() / sampleSize;
int windowCount = (int) Math.floor(sampleCount
/ Constants.WINDOWSIZE);
byte[] buffer = new byte[sampleSize];
double[] samples = new double[windowCount * Constants.WINDOWSIZE];
try {
for (int i = 0; i < samples.length; i++) {
wavReader.read(buffer, 0, sampleSize);
samples[i] = createSample(buffer);
if (i % 1000 == 0) {
publishProgress("Reading samples...", i, samples.length);
}
}
} catch (IOException e) {
Log.e(TAG, "Exception in reading samples", e);
}
return samples;
}
@Override
protected void onPostExecute(String result) {
codebookString = result;
progressDialog.dismiss();
}
@Override
protected void onPreExecute() {
progressDialog = new ProgressDialog(parentActivity);
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.setTitle("Working...");
progressDialog.setMessage("Working...");
progressDialog.setProgress(0);
progressDialog.setMax(10000);
progressDialog.show();
progressDialog.setCancelable(false);
progressDialog.setCanceledOnTouchOutside(false);
}
@Override
protected void onProgressUpdate(Object... values) {
String msg = (String) values[0];
Integer current = (Integer) values[1];
Integer max = (Integer) values[2];
progressDialog.setMessage(msg);
progressDialog.setProgress(current);
progressDialog.setMax(max);
}
}
}
这是AndroidManifest.xml：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.neu.val.activity"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.READ_LOGS" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_USER_DICTIONARY"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
android:name=".VoiceApplication">
<activity
android:name=".MainActivity"
android:clearTaskOnLaunch="true"
android:excludeFromRecents="true"
android:label="@string/app_name"
android:launchMode="singleTask" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".CreateVoiceSample"
android:label="@string/app_name" >
<intent-filter>
<category android:name="android.intent.category.DEFAULT" />
<action android:name="android.intent.action.INSERT" />
<data android:mimeType="vnd.android.cursor.dir/vnd.hgb.feature" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.DEFAULT" />
<category android:name="com.neu.val.activity.CREATEVOICESAMPLE" />
</intent-filter>
</activity>
<activity
android:name=".VoiceAuthenticator"
android:label="@string/app_name" >
<intent-filter >
<action android:name="com.neu.val.intent.AUTH_METHOD" />
</intent-filter>
<intent-filter>
<action android:name="com.neu.val.intent.DO_AUTH.voicerecognition"/>
</intent-filter>
</activity>
<service android:name="com.neu.val.service.LockService" >
</service>
<receiver
android:name="com.neu.val.service.BootStartUpReceiver"
android:enabled="true"
android:exported="false" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<provider
android:name="com.neu.val.database.AuthDb"
android:authorities="com.neu.val.database">
</provider>
</application>
</manifest>
答案 0 :(得分：0)
我建议你在CedeBook cb = createCodebook（kmeans）的doInBackground方法中设置一个断点：
@Override
protected String doInBackground(String... params) {
:
:
Codebook cb = createCodebook(kmeans);
Gson gson = new Gson();
String codebookJsonString = gson.toJson(cb, Codebook.class);
return codebookJsonString;
}
看起来，codebookJsonString为null，因此在您的方法中返回此null值，并在Method onPostexecute中显示为结果：
@Override
protected void onPostExecute(String result){
codebookString = result;
progressDialog.dismiss();
}
所以你的活动成员codebookString为null。所以当它被访问时 在insertFeature（codeBookString）上将使用null。所以将发生java.lang.NullPointerException。
还有两点：
第二件事是，您将密码记录为信息，请确保在部署应用时将其删除。
Log.i（TAG，“”+ userId +“”+ modeId +“”+密码）;
还要确保Feature.CONTENT_URI具有有效值。