我目前正面臨一個小挑戰,我無法獲取對改變它的方法(startRecording())以外的全局變量(fileName)所做的更改。方法改變後全局變量保持不變
現在會發生什麼:爲了獲取文件名userRecordButton的onClick
它看起來像一個基本的問題裏面,但我並不能解決的話,會:文件名通過的startRecording()
我要的是變更後仍無效對獲得一些快速幫助非常有幫助。先謝謝你。
p/s:這只是我認爲相關的部分代碼,如果您需要完整的代碼,請通知我。
代碼
public class WordAdapter extends ArrayAdapter<Word> {
public String mFileName = null;
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final Button userRecordButton = (Button)listItemView.findViewById(R.id.recordButton);
userRecordButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!isRecording) {
userRecordButton.setText("Ready?");
Handler delayRecord = new Handler();
//This is where i called the handler
setDelayedRecord(delayRecord, userPlayButton, userRecordButton);
//The issue is here: it shows null when i tried debugging
String whatIsMyFileName = mFileName;
Handler maximumRecord = new Handler();
setMaximumRecord(maximumRecord, userPlayButton, userRecordButton);
} else {
exeStopRecording(userPlayButton, userRecordButton);
}
}
}
});
} //End of getView
public void setDelayedRecord(Handler handler, final Button userPlayBtnReference, final Button userRecordBtnReference) {
handler.postDelayed(new Runnable() {
@Override
public void run() {
try {
//James!, this is where I called start recorder.
startRecording();
userPlayBtnReference.setEnabled(false);
} catch (IllegalStateException e) {
Log.d("Hello", "Problem in start recording", e);
}
userRecordBtnReference.setText("Stop");
Toast.makeText(mContext, "Started Recording", Toast.LENGTH_SHORT).show();
setPathName(mFileName);
}
}, 500);
}
private void startRecording() {
mFile = new File(Environment.getExternalStorageDirectory(), mFolder_main);
if (!mFile.exists()) {
mFile.mkdirs();
}
formatter = new SimpleDateFormat("yyMMdd'-'HHmmssSSS");
currentTime_1 = new Date();
dateString = formatter.format(currentTime_1);
uniqueName = "Pronunce-" + dateString + ".3gp";
mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();
mFileName += "/" + mFolder_main + "/" + uniqueName;
//mFileName should no longer be null
mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mRecorder.setOutputFile(mFileName);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
try {
mRecorder.prepare();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed");
}
isRecording = true;
mRecorder.start();
}
}//End of wordAdapter
什麼是userRecordButton?你在哪裏初始化userRecordButton? – Raghavendra
嗨@Raghavendra,它在getView –
裏面初始化好嗎,你調試過嗎?該線是否正在執行?你在哪裏設置值 – Raghavendra