我一直在研究这个问题一天。以下是我的代码和我得到的错误日志。这是一个代码，只要按下按钮就可以从用户获取音频，并且在停止时它会将文件保存到特定文件夹。此代码不适用于模拟器和手机。请帮忙。
hare是指向我的项目文件的链接，以获得进一步的帮助：https://drive.google.com/open?id=0B-Ubzr_X9p-rfkx0VjFtdWNZS1BDenZlZm9BZGNWQzdIOFMxZGtJZnBkSUhnbWwzanBUaWc&authuser=0
请记住它尚未完成。我正在处理当前的添加关系位以及问题所在的位置。
提前致谢
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Fragment;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
public class RelationAudio extends Activity {
Button b1;
Button b2;
private String rType;
private String rName;
private String rPath;
private static final String AUDIO_RECORDER_FILE_EXT_3GP = ".3gp";
private static final String AUDIO_RECORDER_FILE_EXT_MP4 = ".mp4";
//private static final String AUDIO_RECORDER_FOLDER = "AudioRecorder";
private MediaRecorder recorder = null;
private int currentFormat = 1;
EditText et;
Bundle extras;
private int output_formats[] = { MediaRecorder.OutputFormat.MPEG_4, MediaRecorder.OutputFormat.THREE_GPP };
private String file_exts[] = { AUDIO_RECORDER_FILE_EXT_MP4, AUDIO_RECORDER_FILE_EXT_3GP };
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.audio_relation);
extras = getIntent().getExtras();
if (extras != null) {
rType = extras.getString("type");
rPath = extras.getString("path");
}
b1=(Button)findViewById(R.id.button1);
b2=(Button)findViewById(R.id.forward);
et=(EditText)findViewById(R.id.editText1);
b1.setOnTouchListener(new View.OnTouchListener() {
@SuppressLint("ClickableViewAccessibility") @Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
rName = et.getText().toString();
switch(event.getAction()){
case MotionEvent.ACTION_DOWN:
AppLog.logString("Start Recording");
startRecording();
break;
case MotionEvent.ACTION_UP:
AppLog.logString("stop Recording");
stopRecording();
break;
}
save(BitmapFactory.decodeFile(rPath));
return false;
}
});
//Save pic with audio with same name in respective folder.
// b2.setOnClickListener(new OnClickListener() {
//
// @Override
// public void onClick(View v) {
// // TODO Auto-generated method stub
//
// }
//});
}
@SuppressLint("SdCardPath") private String getFilename(){
String filepath = Environment.getExternalStorageDirectory().getAbsolutePath()+ "/Family/"+rType+"/";
String nameFormat=rName+ file_exts[currentFormat];
File file = new File(filepath);
System.out.println(file.getAbsolutePath());
if(!file.exists()){
System.out.println(file.getAbsolutePath());
file.mkdirs();
}
System.out.println(file.getAbsolutePath()+nameFormat);
return (file.getAbsolutePath()+"/"+nameFormat);
}
private void startRecording(){
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(output_formats[currentFormat]);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(getFilename());
recorder.setOnErrorListener(errorListener);
recorder.setOnInfoListener(infoListener);
try {
recorder.prepare();
recorder.start();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@SuppressLint("SdCardPath") public void save(Bitmap bitM)
{
String fileName=rName;
File direct = new File(Environment.getExternalStorageDirectory().getAbsoluteFile() + "/Family/"+rType);
if (!direct.exists()) {
direct = new File(Environment.getExternalStorageDirectory().getAbsoluteFile() +"/Family/"+rType);
direct.mkdirs();
}
File file = new File(new File(Environment.getExternalStorageDirectory().getAbsoluteFile() + "/Family/"+rType), fileName);
if (file.exists()) {
file.delete();
}
try {
FileOutputStream out = new FileOutputStream(file);
bitM.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private MediaRecorder.OnErrorListener errorListener = new MediaRecorder.OnErrorListener() {
@Override
public void onError(MediaRecorder mr, int what, int extra) {
AppLog.logString("Error: " + what + ", " + extra);
}
};
private MediaRecorder.OnInfoListener infoListener = new MediaRecorder.OnInfoListener() {
@Override
public void onInfo(MediaRecorder mr, int what, int extra) {
AppLog.logString("Warning: " + what + ", " + extra);
}
};
private void stopRecording(){
if(null != recorder){
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
}
}
}
xml文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/imageView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/pinkbg" />
<TextView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="RECORDER" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="16dp"
android:layout_marginRight="16dp"
android:src="@drawable/arrow_right" />
<EditText
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView1"
android:layout_marginTop="62dp"
android:ems="10" >
<requestFocus />
</EditText>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/imageView1"
android:layout_below="@+id/editText1"
android:layout_marginTop="38dp"
android:text="Button" />
<ImageView
android:id="@+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/button1"
android:layout_marginLeft="79dp"
android:layout_marginTop="66dp"
android:src="@drawable/cam1" />
</RelativeLayout>
错误日志
02-12 02:07:18.189: I/System.out(2261): /storage/sdcard/Family/Brother
02-12 02:07:21.699: I/System.out(2261): /storage/sdcard/Family/Brotherjay.3gp
02-12 02:07:42.809: W/System.err(2261): java.io.FileNotFoundException: /storage/sdcard/Family/Brother/jay.3gp: open failed: EACCES (Permission denied)
02-12 02:07:42.819: W/System.err(2261): at libcore.io.IoBridge.open(IoBridge.java:409)
02-12 02:07:42.819: W/System.err(2261): at java.io.FileOutputStream.<init>(FileOutputStream.java:88)
02-12 02:07:42.829: W/System.err(2261): at java.io.FileOutputStream.<init>(FileOutputStream.java:128)
02-12 02:07:42.829: W/System.err(2261): at java.io.FileOutputStream.<init>(FileOutputStream.java:117)
02-12 02:07:42.839: W/System.err(2261): at android.media.MediaRecorder.prepare(MediaRecorder.java:691)
02-12 02:07:42.839: W/System.err(2261): at com.app.family.RelationAudio.startRecording(RelationAudio.java:112)
02-12 02:07:42.849: W/System.err(2261): at com.app.family.RelationAudio.access$1(RelationAudio.java:102)
02-12 02:07:42.849: W/System.err(2261): at com.app.family.RelationAudio$3.onTouch(RelationAudio.java:60)
02-12 02:07:42.859: W/System.err(2261): at android.view.View.dispatchTouchEvent(View.java:7701)
02-12 02:07:42.859: W/System.err(2261): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
02-12 02:07:42.869: W/System.err(2261): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
02-12 02:07:42.869: W/System.err(2261): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
02-12 02:07:42.879: W/System.err(2261): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
02-12 02:07:42.879: W/System.err(2261): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
02-12 02:07:42.889: W/System.err(2261): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
02-12 02:07:42.889: W/System.err(2261): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
02-12 02:07:42.899: W/System.err(2261): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
02-12 02:07:42.899: W/System.err(2261): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068)
02-12 02:07:42.909: W/System.err(2261): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515)
02-12 02:07:42.909: W/System.err(2261): at android.app.Activity.dispatchTouchEvent(Activity.java:2458)
02-12 02:07:42.919: W/System.err(2261): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2016)
02-12 02:07:42.919: W/System.err(2261): at android.view.View.dispatchPointerEvent(View.java:7886)
02-12 02:07:42.919: W/System.err(2261): at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3954)
02-12 02:07:42.939: W/System.err(2261): at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3833)
02-12 02:07:42.939: W/System.err(2261): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
02-12 02:07:42.949: W/System.err(2261): at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449)
02-12 02:07:42.949: W/System.err(2261): at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418)
02-12 02:07:42.959: W/System.err(2261): at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3525)
02-12 02:07:42.959: W/System.err(2261): at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426)
02-12 02:07:42.969: W/System.err(2261): at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3582)
02-12 02:07:42.969: W/System.err(2261): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
02-12 02:07:42.979: W/System.err(2261): at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449)
02-12 02:07:42.979: W/System.err(2261): at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418)
02-12 02:07:42.989: W/System.err(2261): at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426)
02-12 02:07:42.989: W/System.err(2261): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
02-12 02:07:42.999: W/System.err(2261): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5602)
02-12 02:07:42.999: W/System.err(2261): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5582)
02-12 02:07:43.009: W/System.err(2261): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5553)
02-12 02:07:43.009: W/System.err(2261): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5682)
02-12 02:07:43.019: W/System.err(2261): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
02-12 02:07:43.019: W/System.err(2261): at android.os.MessageQueue.nativePollOnce(Native Method)
02-12 02:07:43.029: W/System.err(2261): at android.os.MessageQueue.next(MessageQueue.java:138)
02-12 02:07:43.039: W/System.err(2261): at android.os.Looper.loop(Looper.java:123)
02-12 02:07:43.039: W/System.err(2261): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-12 02:07:43.049: W/System.err(2261): at java.lang.reflect.Method.invokeNative(Native Method)
02-12 02:07:43.049: W/System.err(2261): at java.lang.reflect.Method.invoke(Method.java:515)
02-12 02:07:43.059: W/System.err(2261): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-12 02:07:43.059: W/System.err(2261): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-12 02:07:43.069: W/System.err(2261): at dalvik.system.NativeStart.main(Native Method)
02-12 02:07:43.069: W/System.err(2261): Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied)
02-12 02:07:43.099: W/System.err(2261): at libcore.io.Posix.open(Native Method)
02-12 02:07:43.109: W/System.err(2261): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
02-12 02:07:43.109: W/System.err(2261): at libcore.io.IoBridge.open(IoBridge.java:393)
02-12 02:07:43.119: W/System.err(2261): ... 48 more
02-12 02:07:46.689: D/dalvikvm(2261): GC_FOR_ALLOC freed 325K, 4% free 11618K/12012K, paused 40ms, total 49ms
02-12 02:07:46.799: W/System.err(2261): java.io.FileNotFoundException: /storage/sdcard/Family/Brother/jay: open failed: EACCES (Permission denied)
02-12 02:07:46.809: W/System.err(2261): at libcore.io.IoBridge.open(IoBridge.java:409)
02-12 02:07:46.819: W/System.err(2261): at java.io.FileOutputStream.<init>(FileOutputStream.java:88)
02-12 02:07:46.819: W/System.err(2261): at java.io.FileOutputStream.<init>(FileOutputStream.java:73)
02-12 02:07:46.819: W/System.err(2261): at com.app.family.RelationAudio.save(RelationAudio.java:137)
02-12 02:07:46.829: W/System.err(2261): at com.app.family.RelationAudio$3.onTouch(RelationAudio.java:68)
02-12 02:07:46.829: W/System.err(2261): at android.view.View.dispatchTouchEvent(View.java:7701)
02-12 02:07:46.829: W/System.err(2261): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
02-12 02:07:46.849: W/System.err(2261): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
02-12 02:07:46.849: W/System.err(2261): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
02-12 02:07:46.859: W/System.err(2261): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
02-12 02:07:46.859: W/System.err(2261): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
02-12 02:07:46.869: W/System.err(2261): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
02-12 02:07:46.869: W/System.err(2261): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
02-12 02:07:46.879: W/System.err(2261): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
02-12 02:07:46.889: W/System.err(2261): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068)
02-12 02:07:46.889: W/System.err(2261): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515)
02-12 02:07:46.899: W/System.err(2261): at android.app.Activity.dispatchTouchEvent(Activity.java:2458)
02-12 02:07:46.899: W/System.err(2261): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2016)
02-12 02:07:46.909: W/System.err(2261): at android.view.View.dispatchPointerEvent(View.java:7886)
02-12 02:07:46.919: W/System.err(2261): at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3954)
02-12 02:07:46.919: W/System.err(2261): at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3833)
02-12 02:07:46.919: W/System.err(2261): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
02-12 02:07:46.929: W/System.err(2261): at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449)
02-12 02:07:46.939: W/System.err(2261): at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418)
02-12 02:07:46.939: W/System.err(2261): at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3525)
02-12 02:07:46.949: W/System.err(2261): at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426)
02-12 02:07:46.949: W/System.err(2261): at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3582)
02-12 02:07:46.959: W/System.err(2261): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
02-12 02:07:46.969: W/System.err(2261): at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449)
02-12 02:07:46.969: W/System.err(2261): at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418)
02-12 02:07:46.969: W/System.err(2261): at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426)
02-12 02:07:46.979: W/System.err(2261): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
02-12 02:07:46.989: W/System.err(2261): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5602)
02-12 02:07:46.989: W/System.err(2261): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5582)
02-12 02:07:46.999: W/System.err(2261): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5553)
02-12 02:07:46.999: W/System.err(2261): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5682)
02-12 02:07:47.009: W/System.err(2261): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
02-12 02:07:47.009: W/System.err(2261): at android.os.MessageQueue.nativePollOnce(Native Method)
02-12 02:07:47.019: W/System.err(2261): at android.os.MessageQueue.next(MessageQueue.java:138)
02-12 02:07:47.019: W/System.err(2261): at android.os.Looper.loop(Looper.java:123)
02-12 02:07:47.029: W/System.err(2261): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-12 02:07:47.029: W/System.err(2261): at java.lang.reflect.Method.invokeNative(Native Method)
02-12 02:07:47.039: W/System.err(2261): at java.lang.reflect.Method.invoke(Method.java:515)
02-12 02:07:47.039: W/System.err(2261): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-12 02:07:47.049: W/System.err(2261): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-12 02:07:47.049: W/System.err(2261): at dalvik.system.NativeStart.main(Native Method)
02-12 02:07:47.059: W/System.err(2261): Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied)
02-12 02:07:47.079: W/System.err(2261): at libcore.io.Posix.open(Native Method)
02-12 02:07:47.089: W/System.err(2261): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
02-12 02:07:47.089: W/System.err(2261): at libcore.io.IoBridge.open(IoBridge.java:393)
02-12 02:07:47.099: W/System.err(2261): ... 45 more
答案 0 :(得分：0)
EACCES (Permission denied)。您必须明确声明在清单中读取外部存储的权限。
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
声明到清单文件的<Manifest>标记。
答案 1 :(得分：0)
如果您使用Android版本＆gt; = 4.4，则无论是否声明了android.permission.WRITE_EXTERNAL_STORAGE权限，通常都禁止对外部SD卡进行写访问。
参见例如this