Q1. What are the available different forms of video encoding type
available in android for user to choose from? Because i'm currently
doing a video recording app which i wanted to use ListPreference to
allow user to dynamically choose what type of encoding is available.
Q2. I wanted to know is there any easy way to retrieve video
resolution on the actual phone? Because different phone has different
phone resolution's compatibility, so i wanted to retrieve the
resolution data and display the different resolutions dynamically into
my ListPreference for user selection... Does it have to do with a
method name "flatten()" i don't quite know what is the method... I'm
kinna new in java/android, can someone guide me on how should i do
that?
My mainActivity.java file
public class CameraTest extends Activity implements
SurfaceHolder.Callback {
private static final String TAG = "Exception";
public static SurfaceView surfaceView;
public static SurfaceHolder surfaceHolder;
public static Camera MainCamera;
private static boolean previewRunning;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
surfaceView = (SurfaceView)findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
//getparameters
Button btnStart = (Button) findViewById(R.id.button4);
btnStart.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
startService(new Intent(getApplicationContext(),
ServiceRecording.class));
}
});
Button btnStop = (Button) findViewById(R.id.button5);
btnStop.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
stopService(new Intent(getApplicationContext(),
ServiceRecording.class));
}
});
Button btnSetting = (Button) findViewById(R.id.button2);
btnSetting.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
startActivity(new Intent(getApplicationContext(),
SettingActivity.class));
}
});
}
public static boolean ServiceStatus;
@Override
public void surfaceCreated(SurfaceHolder holder) {
if(ServiceRecording.recordingStatus)
{
stopService(new Intent(getApplicationContext(),
ServiceRecording.class));
try {
Thread.sleep(4000);
}
catch (InterruptedException e) {
e.printStackTrace();
}
MainCamera = ServiceRecording.ServiceCamera;
startService(new Intent(getApplicationContext(),
ServiceRecording.class));
}
else{
MainCamera = Camera.open();
if (MainCamera != null) {
Camera.Parameters params = MainCamera.getParameters();
params.setPreviewSize(320, 240);
params.setPreviewFormat(PixelFormat.JPEG);
MainCamera.setParameters(params);
try {
MainCamera.setPreviewDisplay(holder);
}
catch (IOException e)
{
e.printStackTrace();
}
MainCamera.startPreview();
previewRunning = true;
}
else {
Toast.makeText(getApplicationContext(), "Camera not
available!", Toast.LENGTH_LONG).show();
finish();
}
}
if (previewRunning) {
MainCamera.stopPreview();
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int
width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder){
MainCamera.stopPreview();
previewRunning = false;
MainCamera.release();
}
}
My Preference.xml file since having error because my ListPreference
for Video resolution has empty "entries" for user to select from...
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/
android">
<PreferenceCategory
android:title="Video">
<CheckBoxPreference
android:title="Audio"
android:defaultValue="True"
android:summary="Select w/o Audio"
android:key="AudioPref" />
<ListPreference
android:title="Video Encoder"
android:defaultValue="3"
android:summary="Set the Video Encoding Type"
android:key="EncodingPref"
android:entries="@array/EncodingType"
android:entryValues="@array/
updateEncodingType"
android:dialogTitle="Video Encoding Format" />
<ListPreference
android:title="File Format"
android:defaultValue="3gp"
android:summary="Select the File Format"
android:key="FileFormatPref"
android:entries="@array/FileFormat"
android:entryValues="@array/updateFileFormat"
android:dialogTitle="File Format" />
<ListPreference
android:title="Video Resolution"
android:summary="Set the Video Resolution"
android:key="ResolutionPref"
android:dialogTitle="Video Resolution" />
</PreferenceCategory>
</PreferenceScreen>
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