我正在尝试录制视频，并想显示正在进行的录制的秒数。
我应该怎么做？
public void startRecording（View v）{
flipCamera.setVisibility(View.GONE);
captureImage.setVisibility(View.GONE);
String deviceMan = android.os.Build.MANUFACTURER;
this.mediaRecorder = new MediaRecorder();
this.mediaRecorder.setCamera(this.camera);
camera.unlock();
this.mediaRecorder.setCamera(camera);
this.mediaRecorder.setOrientationHint(90);
this.mediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
this.mediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
CamcorderProfile camcorderProfile_HQ = CamcorderProfile
.get(CamcorderProfile.QUALITY_480P);
this.mediaRecorder.setProfile(camcorderProfile_HQ);
this.mediaRecorder.setOutputFile(this.initFile().getAbsolutePath());
this.mediaRecorder.setMaxDuration(60000); // Set max duration 60 sec.
this.mediaRecorder.setMaxFileSize(5000000);
this.mediaRecorder.setPreviewDisplay(this.cameraPreview.getHolder()
.getSurface());
this.mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
try {
this.mediaRecorder.prepare();
// start the actual recording
// throws IllegalStateException if not prepared
this.mediaRecorder.start();
Toast.makeText(this, R.string.recording, Toast.LENGTH_SHORT).show();
this.toggleButtons(true);
} catch (Exception e) {
Log.wtf(TAG, "Failed to prepare MediaRecorder", e);
Toast.makeText(this, R.string.cannot_record, Toast.LENGTH_SHORT)
.show();
this.releaseMediaRecorder();
}
}
我对android很陌生，所以请有人帮忙。
您可以使用计时器和处理程序来实现它。在下面的示例中，文本视图用于以00min：00sec格式显示持续时间。我在后台服务中使用此功能，但您也可以在活动中使用它。
public TextView timerTextView;
private long startHTime = 0L;
private Handler customHandler = new Handler();
long timeInMilliseconds = 0L;
long timeSwapBuff = 0L;
long updatedTime = 0L;
private Runnable updateTimerThread = new Runnable() {
public void run() {
timeInMilliseconds = SystemClock.uptimeMillis() - startHTime;
updatedTime = timeSwapBuff + timeInMilliseconds;
int secs = (int) (updatedTime / 1000);
int mins = secs / 60;
secs = secs % 60;
if (timerTextView != null)
timerTextView.setText("" + String.format("%02d", mins) + ":"
+ String.format("%02d", secs));
customHandler.postDelayed(this, 0);
}
};
从哪里开始录制：
......
this.mediaRecorder.start()
startHTime = SystemClock.uptimeMillis();
customHandler.postDelayed(updateTimerThread, 0);
停止记录的位置：
mediaRecorder.stop()
timeSwapBuff += timeInMilliseconds;
customHandler.removeCallbacks(updateTimerThread);
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我来说两句