I am have a little trouble understanding the AsyncTask and whether or not i can actually do what i am trying to do.
Within my onCreate method of my activity I am doing a few things, one of which is to create a GLSurfaceView and set my renderer. I want this process to be done by an AsyncTask in the background.
Here is my code
public class ActivityTest extends BaseGameActivity
{
/** Hold a reference to our GLSurfaceView */
private MYGLSurfaceView mGLSurfaceView;
public MYGamePlay GamePlay;
public GoogleApiClient mGoogleApiClient = null;
private AdView adView;
private static final String AD_UNIT_ID = "*******************************";
private Button RotateButton;
private CreateRenderer mCreateRenderer;
private TextView Score;
private RelativeLayout layout;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
Dialog loader_dialog = new Dialog(this,android.R.style.Theme_Black_NoTitleBar_Fullscreen);
loader_dialog.setContentView(R.layout.loading_screen);
loader_dialog.show();
// Create an ad.
adView = new AdView(this);
adView.setAdSize(AdSize.SMART_BANNER);
adView.setAdUnitId(AD_UNIT_ID);
// create the layout that holds the combined game layout
layout = new RelativeLayout(this);
layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
// Create an ad request. Check logcat output for the hashed device ID to
// get test ads on a physical device.
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice("***********************").build();
// Start loading the ad in the background.
adView.loadAd(adRequest);
Score = new TextView(this);
Score.setText(" 0");
RelativeLayout.LayoutParams scoreParams = new
RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
Score.setLayoutParams(scoreParams);
Typeface tf = Typeface.createFromAsset(getAssets(),"Fonts/D3Euronism_b.ttf");
Score.setTextSize(getResources().getDimension(R.dimen.textsize));
Score.setTypeface(tf);
Score.setTextColor(Color.parseColor("#FDAA03"));
LayoutInflater inflater = (LayoutInflater) this.getSystemService(this.LAYOUT_INFLATER_SERVICE);
View userInterface = inflater.inflate(R.layout.user_interface, null);
RotateButton = (Button) userInterface.findViewById(R.id.rotbutton);
RotateButton.setOnTouchListener(new OnTouchListener()
{
@Override
public boolean onTouch(View v, MotionEvent event)
{
//irrelivant
}
});
RelativeLayout.LayoutParams adParams =
new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
adParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
adParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
mCreateRenderer = new CreateRenderer(this, Score, mGLSurfaceView);
mCreateRenderer.execute();
layout.addView(userInterface);
layout.addView(Score);
layout.addView(adView, adParams);
setContentView(layout);
}
@Override
protected void onResume()
{
// The activity must call the GL surface view's onResume() on activity onResume().
super.onResume();
//mGLSurfaceView.onResume();
}
@Override
protected void onPause()
{
// The activity must call the GL surface view's onPause() on activity onPause().
super.onPause();
//mGLSurfaceView.onPause();
}
private class CreateRenderer extends AsyncTask<Void, Void, GLSurfaceView>
{
Context baseClassContext;
RBGLSurfaceView myGLSurfaceView;
TextView GameScore;
public CreateRenderer(Context mContext, TextView mScore, RBGLSurfaceView rGLSurfaceView )
{
baseClassContext = mContext;
GameScore = mScore;
myGLSurfaceView = rGLSurfaceView;
}
@Override
protected GLSurfaceView doInBackground(Void... params)
{
final ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();
final boolean supportsEs2 = configurationInfo.reqGlEsVersion >= 0x20000;
if (supportsEs2)
{
// Request an OpenGL ES 2.0 compatible context.
/*line 226*/ myGLSurfaceView = new MYGLSurfaceView(baseClassContext); new GLSurfaceView(baseClassContext);
myGLSurfaceView.setEGLContextClientVersion(2);
final DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
// Set the renderer to our demo renderer, defined below.
mGoogleApiClient = getApiClient();
layout.addView(myGLSurfaceView);
myGLSurfaceView.setRenderer(new MYRenderer(baseClassContext, GameScore, mGoogleApiClient),displayMetrics);
}
else
{
// This is where you could create an OpenGL ES 1.x compatible
// renderer if you wanted to support both ES 1 and ES 2.
}
return myGLSurfaceView;
}
@Override
protected void onPostExecute(GLSurfaceView result)
{
}
@Override
protected void onPreExecute() {}
@Override
protected void onProgressUpdate(Void... values) {}
}
}
I have been reading conflicting things about AsyncTask like whether i can create a contstructor and pass things to it.
Any way it fails on line 226 which i have marked in the code above.
Here is the logCat
09-05 09:29:29.554: E/AndroidRuntime(7585): FATAL EXCEPTION: AsyncTask #2
09-05 09:29:29.554: E/AndroidRuntime(7585): java.lang.RuntimeException: An error occured while executing doInBackground()
09-05 09:29:29.554: E/AndroidRuntime(7585): at android.os.AsyncTask$3.done(AsyncTask.java:299)
09-05 09:29:29.554: E/AndroidRuntime(7585): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
09-05 09:29:29.554: E/AndroidRuntime(7585): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
09-05 09:29:29.554: E/AndroidRuntime(7585): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
09-05 09:29:29.554: E/AndroidRuntime(7585): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
09-05 09:29:29.554: E/AndroidRuntime(7585): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
09-05 09:29:29.554: E/AndroidRuntime(7585): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
09-05 09:29:29.554: E/AndroidRuntime(7585): at java.lang.Thread.run(Thread.java:856)
09-05 09:29:29.554: E/AndroidRuntime(7585): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
09-05 09:29:29.554: E/AndroidRuntime(7585): at android.os.Handler.<init>(Handler.java:197)
09-05 09:29:29.554: E/AndroidRuntime(7585): at android.os.Handler.<init>(Handler.java:111)
09-05 09:29:29.554: E/AndroidRuntime(7585): at android.view.SurfaceView$1.<init>(SurfaceView.java:122)
09-05 09:29:29.554: E/AndroidRuntime(7585): at android.view.SurfaceView.<init>(SurfaceView.java:122)
09-05 09:29:29.554: E/AndroidRuntime(7585): at android.opengl.GLSurfaceView.<init>(GLSurfaceView.java:213)
09-05 09:29:29.554: E/AndroidRuntime(7585): at com.game.cuberush.MYGLSurfaceView.<init>(MYGLSurfaceView.java:34)
09-05 09:29:29.554: E/AndroidRuntime(7585): at com.game.test.ActivityTest$CreateRenderer.doInBackground(ActivityTest.java:226)
09-05 09:29:29.554: E/AndroidRuntime(7585): at com.game.test.ActivityTest$CreateRenderer.doInBackground(ActivityTest.java:1)
09-05 09:29:29.554: E/AndroidRuntime(7585): at android.os.AsyncTask$2.call(AsyncTask.java:287)
09-05 09:29:29.554: E/AndroidRuntime(7585): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
09-05 09:29:29.554: E/AndroidRuntime(7585): ... 4 more
this is the first time i have tried to use AsyncTask so i realise i am probably making a mess with it. So any help with this would be great
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