Aufnehmen von Audio durch ein OnClick-Ereignis in einer if-Anweisung

Question

Ich möchte eine Schaltfläche erstellen, die beide die Audioaufnahme startet und die Audioaufnahme stoppt. Ich versuche, den Text von "Aufnahme starten" auf "Aufnahme beenden" zu setzen. Das kann ich jedoch nicht.

Dies sind die folgenden Probleme die ich habe:

1) Nicht das xml onClick Ereignis zu bekommen in der Lage, den Stand der Klasse zu entsprechen. Wenn ich jedoch den RecordButton-Code in meiner Klasse hervorhebe und Verwendungszwecke suche, entspricht er dem onClick-Ereignis in der Aktivität.

2) Es gibt keinen Text auf der Schaltfläche auf meine app angezeigt

3) Wenn ich den Knopf meiner app

Auch Abstürze klicken bin ich sehr, sehr neu Codierung.

meine Klasse ist wie folgt:

package kyr.com.knowyourrights; 


import android.content.Intent; 
import android.media.MediaRecorder; 
import android.os.Environment; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.webkit.WebView; 
import android.widget.Button; 
import android.widget.TextView; 



import java.io.IOException; 



public class Drugs extends AppCompatActivity { 


WebView myBrowser; 
MediaRecorder mRecorder; 
private static String audioFilePath; 
public boolean isRecording = false; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_drugs); 



    myBrowser = (WebView) findViewById(R.id.mybrowser); 
    myBrowser.loadUrl("file:///android_asset/drugs.html"); 
    myBrowser.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); 

    Button btndrugslaw = (Button) findViewById(R.id.drugslaw); 
    Button btnrecord = (Button) findViewById(R.id.RecordButton); 



    btndrugslaw.setOnClickListener(new View.OnClickListener() { 
     public void onClick(View view) { 
      Intent intentdruglaw = new Intent(Drugs.this, DrugLaw.class); 
      startActivity(intentdruglaw); 
     } 
    });} 


    public void RecordButton (View view) throws IOException { 
     TextView textView = (TextView) findViewById(R.id.RecordButton); 
     audioFilePath = 
       Environment.getExternalStorageDirectory().getAbsolutePath() 
         + "/myaudio.3gp"; 

     mRecorder = new MediaRecorder(); 
     mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); 
     mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); 
     mRecorder.setOutputFile(audioFilePath); 
     mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); 
     mRecorder.start(); 

     if (isRecording) { 
      stopRecording(); 
      isRecording = false; 
      textView.setText("start"); 
     } else { 
      startRecording(); 
      isRecording = true; 
      textView.setText("stop"); 
     }}; 

public void startRecording() { 
    mRecorder.start(); 
} 


public void stopRecording() { 
    mRecorder.stop(); 
    mRecorder.release(); 
    mRecorder = null; 
}} 

meine Tätigkeit ist wie folgt:

<ScrollView 
android:layout_height="match_parent" 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent"> 

<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" 
tools:context="kyr.com.knowyourrights.Drugs" 
android:orientation="vertical" 
> 




<WebView 
    android:id="@+id/mybrowser" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_centerVertical="true" 
    android:layout_alignParentLeft="false" 
    android:layout_alignParentStart="true" 
    android:layout_below="@+id/RecordButton" 
    > 

</WebView> 

<Button 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:id="@+id/RecordButton" 
    android:onClick="RecordButton" 
    android:layout_centerHorizontal="true" 
    android:layout_alignParentTop="true" 
    /> 


<Button 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:id="@+id/drugslaw" 
    android:text="Take me to the law" 
    android:layout_below="@+id/mybrowser" 
    android:layout_centerHorizontal="true" 
    android:layout_alignParentBottom="true" /> 

</RelativeLayout> 


</ScrollView> 

mein Log Katze Bericht:

05-11 23:18:31.893 29728-29728/? I/art﹕ Late-enabling -Xcheck:jni 
05-11 23:18:32.051 29728-29746/kyr.com.knowyourrights D/OpenGLRenderer﹕ Use EGL_SWAP_BEHAVIOR_PRESERVED: true 
05-11 23:18:32.059 29728-29728/kyr.com.knowyourrights D/Atlas﹕ Validating map... 
05-11 23:18:32.116 29728-29746/kyr.com.knowyourrights I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:410>: EGL 1.4 QUALCOMM build: Nondeterministic_AU_msm8974_LA.BF.1.1.1.C3__release_AU() 
    OpenGL ES Shader Compiler Version: E031.25.03.06 
    Build Date: 04/27/15 Mon 
    Local Branch: mybranch9445032 
    Remote Branch: quic/LA.BF.1.1.1.c3_1 
    Local Patches: NONE 
    Reconstruct Branch: NOTHING 
05-11 23:18:32.118 29728-29746/kyr.com.knowyourrights I/OpenGLRenderer﹕ Initialized EGL, version 1.4 
05-11 23:18:32.143 29728-29746/kyr.com.knowyourrights D/OpenGLRenderer﹕ Enabling debug mode 0 
05-11 23:18:32.237 29728-29728/kyr.com.knowyourrights I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@1a037f4a time:44708449 
05-11 23:18:40.297 29728-29728/kyr.com.knowyourrights I/Timeline﹕ Timeline: Activity_launch_request id:kyr.com.knowyourrights time:44716509 
05-11 23:18:40.373 29728-29728/kyr.com.knowyourrights I/WebViewFactory﹕ Loading com.google.android.webview version 50.0.2661.86 (code 266108600) 
05-11 23:18:40.392 29728-29728/kyr.com.knowyourrights I/cr_LibraryLoader﹕ Time to load native libraries: 1 ms (timestamps 6603-6604) 
05-11 23:18:40.392 29728-29728/kyr.com.knowyourrights I/cr_LibraryLoader﹕ Expected native library version number "50.0.2661.86", actual native library version number "50.0.2661.86" 
05-11 23:18:40.401 29728-29728/kyr.com.knowyourrights V/WebViewChromiumFactoryProvider﹕ Binding Chromium to main looper Looper (main, tid 1) {2db660c6} 
05-11 23:18:40.401 29728-29728/kyr.com.knowyourrights I/cr_LibraryLoader﹕ Expected native library version number "50.0.2661.86", actual native library version number "50.0.2661.86" 
05-11 23:18:40.401 29728-29728/kyr.com.knowyourrights I/chromium﹕ [INFO:library_loader_hooks.cc(143)] Chromium logging enabled: level = 0, default verbosity = 0 
05-11 23:18:40.414 29728-29728/kyr.com.knowyourrights I/cr_BrowserStartup﹕ Initializing chromium process, singleProcess=true 
05-11 23:18:40.420 29728-29728/kyr.com.knowyourrights E/ApkAssets﹕ Error while loading asset assets/natives_blob_64.bin: java.io.FileNotFoundException: assets/natives_blob_64.bin 
05-11 23:18:40.420 29728-29728/kyr.com.knowyourrights E/ApkAssets﹕ Error while loading asset assets/snapshot_blob_64.bin: java.io.FileNotFoundException: assets/snapshot_blob_64.bin 
05-11 23:18:40.466 29728-29833/kyr.com.knowyourrights W/cr_media﹕ Requires BLUETOOTH permission 
05-11 23:18:40.471 29728-29728/kyr.com.knowyourrights I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.android.webview.chromium.WebViewContentsClientAdapter$WebResourceErrorImpl> 
05-11 23:18:40.472 29728-29728/kyr.com.knowyourrights I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.android.webview.chromium.WebViewContentsClientAdapter$WebResourceErrorImpl> 
05-11 23:18:40.507 29728-29728/kyr.com.knowyourrights I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<org.chromium.content.browser.FloatingWebActionModeCallback> 
05-11 23:18:40.507 29728-29728/kyr.com.knowyourrights I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<org.chromium.content.browser.FloatingWebActionModeCallback> 
05-11 23:18:40.523 29728-29728/kyr.com.knowyourrights D/cr_Ime﹕ [InputMethodManagerWrapper.java:30] Constructor 
05-11 23:18:40.530 29728-29728/kyr.com.knowyourrights W/cr_AwContents﹕ onDetachedFromWindow called when already detached. Ignoring 
05-11 23:18:40.531 29728-29728/kyr.com.knowyourrights D/cr_Ime﹕ [InputMethodManagerWrapper.java:59] isActive: false 
05-11 23:18:40.543 29728-29728/kyr.com.knowyourrights I/cr_Ime﹕ ImeThread is not enabled. 
05-11 23:18:40.576 29728-29843/kyr.com.knowyourrights E/libEGL﹕ validate_display:255 error 3008 (EGL_BAD_DISPLAY) 
05-11 23:18:40.622 29728-29746/kyr.com.knowyourrights D/OpenGLRenderer﹕ endAllStagingAnimators on 0xb499db80 (RippleDrawable) with handle 0xae82c9c0 
05-11 23:18:40.636 29728-29728/kyr.com.knowyourrights W/cr_BindingManager﹕ Cannot call determinedVisibility() - never saw a connection for the pid: 29728 
05-11 23:18:40.637 29728-29728/kyr.com.knowyourrights D/cr_Ime﹕ [InputMethodManagerWrapper.java:59] isActive: true 
05-11 23:18:40.637 29728-29728/kyr.com.knowyourrights D/cr_Ime﹕ [InputMethodManagerWrapper.java:68] hideSoftInputFromWindow 
05-11 23:18:40.640 29728-29728/kyr.com.knowyourrights I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@3ba92c8b time:44716852 
05-11 23:18:44.165 29728-29728/kyr.com.knowyourrights E/MediaRecorder﹕ start called in an invalid state: 4 
05-11 23:18:44.166 29728-29728/kyr.com.knowyourrights D/AndroidRuntime﹕ Shutting down VM 
05-11 23:18:44.167 29728-29728/kyr.com.knowyourrights E/AndroidRuntime﹕ FATAL EXCEPTION: main 
    Process: kyr.com.knowyourrights, PID: 29728 
    java.lang.IllegalStateException: Could not execute method of the activity 
      at android.view.View$1.onClick(View.java:4029) 
      at android.view.View.performClick(View.java:4789) 
      at android.view.View$PerformClick.run(View.java:19881) 
      at android.os.Handler.handleCallback(Handler.java:739) 
      at android.os.Handler.dispatchMessage(Handler.java:95) 
      at android.os.Looper.loop(Looper.java:135) 
      at android.app.ActivityThread.main(ActivityThread.java:5294) 
      at java.lang.reflect.Method.invoke(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:372) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699) 
    Caused by: java.lang.reflect.InvocationTargetException 
      at java.lang.reflect.Method.invoke(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:372) 
      at android.view.View$1.onClick(View.java:4024) 
            at android.view.View.performClick(View.java:4789) 
            at android.view.View$PerformClick.run(View.java:19881) 
            at android.os.Handler.handleCallback(Handler.java:739) 
            at android.os.Handler.dispatchMessage(Handler.java:95) 
            at android.os.Looper.loop(Looper.java:135) 
            at android.app.ActivityThread.main(ActivityThread.java:5294) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at java.lang.reflect.Method.invoke(Method.java:372) 
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699) 
    Caused by: java.lang.IllegalStateException 
      at android.media.MediaRecorder.start(Native Method) 
      at kyr.com.knowyourrights.Drugs.RecordButton(Drugs.java:64) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at java.lang.reflect.Method.invoke(Method.java:372) 
            at android.view.View$1.onClick(View.java:4024) 
            at android.view.View.performClick(View.java:4789) 
            at android.view.View$PerformClick.run(View.java:19881) 
            at android.os.Handler.handleCallback(Handler.java:739) 
            at android.os.Handler.dispatchMessage(Handler.java:95) 
            at android.os.Looper.loop(Looper.java:135) 
            at android.app.ActivityThread.main(ActivityThread.java:5294) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at java.lang.reflect.Method.invoke(Method.java:372) 
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699) 

Answer 1

Sie einen neuen MediaRecorder jeder Schaffung Zeit wird die R.id.RecordButton Taste geklickt, was bedeutet, dass, nachdem Sie die Aufnahme starten, wenn Sie st drücken op, du versuchst eine MediaRecorder zu stoppen, die nie gestartet wurde (die neu erstellte).

Außerdem haben Sie prepare() vor start() anrufen und R.id.RecordButton ist ein Button kein TextView.

Try this:

public void RecordButton (View view) { 
    if(mRecorder == null){ 
     audioFilePath = Environment.getExternalStorageDirectory().getAbsolutePath() 
        + "/myaudio.3gp"; 
     mRecorder = new MediaRecorder(); 
     mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); 
     mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); 
     mRecorder.setOutputFile(audioFilePath); 
     mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);  
    } 
    if (isRecording) { 
     try{ 
      stopRecording(); 
      isRecording = false; 
      ((Button)view).setText("start"); 
     }catch(Exception e){ 
      e.printStackTrace(); 
     } 
    } else { 
     try{ 
      startRecording(); 
      isRecording = true; 
      ((Button)view).setText("stop"); 
     }catch(Exception e){ 
      e.printStackTrace(); 
     } 
    } 
} 

public void startRecording() throws IllegalStateException, IOException{ 
    mRecorder.prepare(); 
    mRecorder.start(); 
} 
public void stopRecording() throws IllegalStateException, IOException{ 
    mRecorder.stop(); 
    mRecorder.release(); 
} 

Answer 2

// aktualisiert ..

Lassen Sie uns dieses Problem zu beheben! So müssen Sie zuerst die android:onClick="RecordButton" aus der Layout-Datei und legen Sie Text als entfernen:

<Button 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:id="@+id/RecordButton" 
    android:text="Start Recording" 
    android:layout_centerHorizontal="true" 
    android:layout_alignParentTop="true" 
    /> 

Dann in Ihrem onCreate() tun, um die Änderungen wie diese.

@Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_drugs); 

    Button btndrugslaw = (Button) findViewById(R.id.drugslaw); 
    Button btnrecord = (Button) findViewById(R.id.RecordButton); 

    btnrecord.setOnClickListener(new EventHandler()); 
    btndrugslaw.setOnClickListener(new EventHandler()); 
    } 



    private class EventHandler implements OnClickListener 
     { 
      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       switch(v.getId()) 
       { 
        case R.id.RecordButton: 
        if(btnrecord.getText().equalsIgnoreCase("Start Recording")) 
        { 
      btnrecord.setText("Stop Recording"); 
    audioFilePath = 
       Environment.getExternalStorageDirectory().getAbsolutePath() 
         + "/myaudio.3gp"; 

     mRecorder = new MediaRecorder(); 
     mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); 
     mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); 
     mRecorder.setOutputFile(audioFilePath); 
     mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); 
     mRecorder.start(); 

         } 
       else{ 
       btnrecord.setText("Start Recording"); 
       //code to stop the player 
}     
        break; 

        case R.id.drugslaw: 
        Your action here... 
        break; 
    } 
}