问题描述
我正在尝试使用广播接收器和JobIntentService设置android通话记录器。但是,无论何时启动JobIntentService, Mediarecorder.prepare()方法都会引发如下错误:
W/System.err: java.io.FileNotFoundException: /storage/emulated/0/Music/filename.3gp: open Failed: EACCES (Permission denied)
W/System.err: at libcore.io.IoBridge.open(IoBridge.java:496)
W/System.err: at java.io.RandomAccessFile.<init>(RandomAccessFile.java:289)
W/System.err: at java.io.RandomAccessFile.<init>(RandomAccessFile.java:152)
W/System.err: at android.media.MediaRecorder.prepare(MediaRecorder.java:1046)
W/System.err: at com.example.callrecorder.Job.recordCall(Job.java:77)
W/System.err: at com.example.callrecorder.Job.onHandleWork(Job.java:38)
W/System.err: at androidx.core.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:392)
W/System.err: at androidx.core.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:383)
W/System.err: at android.os.AsyncTask$3.call(AsyncTask.java:378)
W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:266)
W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
W/System.err: at java.lang.Thread.run(Thread.java:919)
W/System.err: Caused by: android.system.ErrnoException: open Failed: EACCES (Permission denied)
W/System.err: at libcore.io.Linux.open(Native Method)
W/System.err: at libcore.io.ForwardingOs.open(ForwardingOs.java:167)
W/System.err: at libcore.io.BlockGuardOs.open(BlockGuardOs.java:252)
W/System.err: at libcore.io.ForwardingOs.open(ForwardingOs.java:167)
W/System.err: at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:7255)
W/System.err: at libcore.io.IoBridge.open(IoBridge.java:482)
W/System.err: ... 12 more
I/Try: java.io.FileNotFoundException: /storage/emulated/0/Music/filename.3gp: open Failed: EACCES (Permission denied)
E/MediaRecorder: start called in an invalid state: 4
E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
Process: com.example.callrecorder,PID: 10311
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$4.done(AsyncTask.java:399)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
at java.util.concurrent.FutureTask.run(FutureTask.java:271)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
Caused by: java.lang.IllegalStateException
at android.media.MediaRecorder.start(Native Method)
at com.example.callrecorder.Job.recordCall(Job.java:82)
at com.example.callrecorder.Job.onHandleWork(Job.java:38)
at androidx.core.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:392)
at androidx.core.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:383)
at android.os.AsyncTask$3.call(AsyncTask.java:378)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
JobIntentService的代码如下:
public class Job extends JobIntentService {
static final int JOB_ID = 1000;
String state;
MediaRecorder mediaRecorder;
static void enqueueWork(Context context,Intent intent) {
enqueueWork(context,Job.class,JOB_ID,intent);
}
@Override
protected void onHandleWork(@NonNull Intent intent) {
Log.i("Job","Triggered");
state = intent.getExtras().getString(TelephonyManager.EXTRA_STATE);
switch (state) {
case "OFFHOOK": {
recordCall();
}
break;
case "IDLE": {
stopRecording();
}
break;
}
}
@Override
public void onDestroy() {
super.onDestroy();
}
private void stopRecording() {
Log.i("Stato","Stopped");
mediaRecorder.stop();
mediaRecorder.release();
mediaRecorder = null;
}
private void recordCall() {
String recordpath = null;
String path = Environment.getExternalStoragePublicDirectory(DIRECTORY_MUSIC).getAbsolutePath();
File dir = new File(path);
if(!dir.exists()) {
dir.mkdirs();
}
String myFile = "filename.3gp";
mediaRecorder = new MediaRecorder();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setoutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setoutputFile(dir + "/" + myFile);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
try {
mediaRecorder.prepare();
} catch (Exception e) {
e.printstacktrace();
Log.i("Try",String.valueOf(e));
}
mediaRecorder.start();
Log.i("Stato","Started");
}
}
此服务的意图是从广播接收器传递的,并且一切正常,如果我尝试通过删除媒体记录器部分进行检查。由于某种原因,每当我尝试启动媒体记录器时,它都会抛出错误,提示“权限被拒绝”。 我已在Android清单文件中授予 WRITE_EXTERNAL_STORAGE,READ_EXTERNAL_STORAGE,RECORD_AUdio,READ_PHONE_STATE,PROCESS_OUTGOING_CALLS 权限。 作业服务和接收者也已注册。
解决方法
从Android 10开始,您需要旧版权限才能以旧方式访问存储或切换为使用新方法。 将此添加到Manifest中的应用程序下以用于旧版存储。
android:requestLegacyExternalStorage="true"
录音通话功能也已从android 10中停止,因此如果没有辅助功能选项,您将无法再在其上录音通话。