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[英]Editing how file name is displayed in JComboBox while maintaining access to file
[英]while updating(editing) its not taking the old audio file name
具有一個文本和音頻(錄音)並將名稱和路徑保存在db。中,同時單擊音頻也必須播放的名稱。但是在編輯時,如果我想單獨更改名稱,它將不會使用舊文件名各自的一個,它使那個為空。
如果人們不更新音頻,如何獲取舊音頻文件名(錄音)
audioactivity.java
private void saveState() {
String audioname = et1.getText().toString();
String audiofilename = gfilename;
String audiocount = et2.getText().toString();
if(audiocount.equals("")){
audiocount ="1";
}
SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
String audiodate = sdf.format(new Date());
if (mRowId == null || mRowId.longValue() == 0)
{
long id = mDbHelper.createProject4(audioname, audiofilename, audiocount, audiodate);
if (id > 0) {
mRowId = id;
}
} else {
audiofilename=gfilename;
mDbHelper.updateProject4(mRowId, audioname, audiofilename, audiocount,audiodate);
}
}
public View.OnClickListener btnClick = new View.OnClickListener()
{
@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.btnStart:{
AppLog.logString("Start Recording");
enableButtons(true);
startRecording();
break;
}
case R.id.btnstop:{
AppLog.logString("Start Recording");
enableButtons(false);
stopRecording();
break;
}
}
}
};
public MediaRecorder.OnErrorListener errorListener = new MediaRecorder.OnErrorListener() {
@Override
public void onError(MediaRecorder mr, int what, int extra) {
AppLog.logString("Error: " + what + ", " + extra);
}
};
public MediaRecorder.OnInfoListener infoListener = new MediaRecorder.OnInfoListener() {
@Override
public void onInfo(MediaRecorder mr, int what, int extra) {
AppLog.logString("Warning: " + what + ", " + extra);
}
};
public void setButtonHandlers() {
((Button)findViewById(R.id.btnStart)).setOnClickListener(btnClick);
((Button)findViewById(R.id.btnstop)).setOnClickListener(btnClick);
}
public void enableButton(int id,boolean isEnable){
((Button)findViewById(id)).setEnabled(isEnable);
}
public void enableButtons(boolean isRecording) {
enableButton(R.id.btnStart,!isRecording);
enableButton(R.id.btnstop,isRecording);
}
@SuppressLint("NewApi")
private void startRecording(){
//displayFormatDialog();
AlertDialog.Builder builder = new AlertDialog.Builder(this);
String formats[] = {"MPEG 4", "3GPP", "AMR"};
builder.setTitle(getString(R.string.choose_format_title))
.setSingleChoiceItems(formats, currentFormat, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
currentFormat = which;
dialog.dismiss();
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) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
})
.show();
}
private void stopRecording(){
if(null != recorder)
{
//mDbHelper.updateProject4FileName(mRowId, gfilename);
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
}
else
{
recorder.stop();
recorder.release();
}
}
public String getFilename(){
String filepath = Environment.getExternalStorageDirectory().getPath();
File file = new File(filepath,AUDIO_RECORDER_FOLDER);
if(!file.exists()){
file.mkdirs();
}
gfilename = (file.getAbsolutePath() + "/" + System.currentTimeMillis() + file_exts[currentFormat]);
return (gfilename);
}
@Override
public void onCompletion (MediaPlayer arg0)
{
}
public void playSong(String gfilename){
// Play song
try
{
mp.reset();
mp.setDataSource(gfilename);
mp.prepare();
mp.start();
// Changing Button Image to pause image
btnPlay.setImageResource(R.drawable.btn_pause);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
我還檢查了調試,如果我們沒有更新記錄,那么它只會將該記錄替換為null。
在這里我還附上了我的數據庫更新代碼
public boolean updateProject4(long _id, String audioname, String audiofilename,String audiocount,String audiodate) {
ContentValues args = new ContentValues();
args.put(CATEGORY_COLUMN_AUDIONAME, audioname );
args.put(CATEGORY_COLUMN_AUDIOFILENAME, audiofilename );
args.put(CATEGORY_COLUMN_AUDIOCOUNT, audiocount );
args.put(CATEGORY_COLUMN_AUDIODATE, audiodate );
return mDb.update(DATABASE_TABLE_AUDIOPRAYER, args, CATEGORY_COLUMN_ID4 + "=" + _id, null) > 0;
}
其實我為我的問題鋪平了道路。
如果在更新時我的文件名變為空,則想從數據庫獲取文件
private void saveState() {
String audioname = et1.getText().toString();
String audiofilename = gfilename;
String audiocount = et2.getText().toString();
if(audiocount.equals("")){
audiocount ="1";
}
SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
String audiodate = sdf.format(new Date());
//String reqname= spin.getSelectedItem().toString();
//Log.i(" save state mathod "," values are "+title+Desc+Body+reqname);
if (mRowId == null || mRowId.longValue() == 0)
{
long id = mDbHelper.createProject4(audioname, audiofilename, audiocount, audiodate);
if (id > 0) {
mRowId = id;
}
} else {
if(audiofilename.equals("")){
Cursor filename = mDbHelper.fetchProject4FileName(mRowId, audiofilename);
startManagingCursor(filename);
gfilename =filename.getString(filename.getColumnIndexOrThrow(GinfyDbAdapter.CATEGORY_COLUMN_AUDIOFILENAME));
//mDbHelper.fetchProject4FileName(mRowId, audiofilename);
audiofilename = gfilename;
mDbHelper.updateProject4(mRowId, audioname, audiofilename, audiocount,audiodate);
}
else
{
audiofilename = gfilename;
mDbHelper.updateProject4(mRowId, audioname, audiofilename, audiocount,audiodate);
}
}
我們必須從db獲取文件名,並檢查audiofilename是否為null意味着,我們必須設置較舊的文件名
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