Android: Start Activity From Options Menu

I am trying to start an activity from an options menu, but my app keeps crashing. The only error that I receive is an ActivityThread.performLaunchActivity(ActivityThread$ActivityRe

Solution 1:

Intent you are activating should point to some target component, which is not in your case, instead you should do following:

@OverridepublicbooleanonOptionsItemSelected(MenuItem item) {
    super.onOptionsItemSelected(item);
    this.closeOptionsMenu();
    Intentintent=newIntent(ActivityA.this, ColourActivity.class);
    /*Here ActivityA is current Activity and ColourActivity is the target Activity.*/
    startActivity(intent);
    returntrue;
}

Solution 2:

Try with this,

@OverridepublicbooleanonCreateOptionsMenu(Menu menu) {
    MenuInflaterinflator= getMenuInflater();
    inflator.inflate(R.menu.changescheme, menu);
    returntrue;
    }

    @OverridepublicbooleanonOptionsItemSelected(MenuItem item) {

    switch(item.getItemId())
         {
         case  R.id.changeScheme:
         Log.d("ChangeScheme", "Selected : ChangeScheme Option");

startActivity(newIntent(MainAcitivity.this, ColourActivity.class));

          returntrue;
         caseR.id.help:
          Log.d("HelpMenu", "Selected : Help Option");
          //Here put your codereturntrue;


         }

    }

Solution 3:

Check this:

@OverridepublicbooleanonCreateOptionsMenu(Menu menu){
        MenuInflater inflater=getMenuInflater();
        inflater.inflate(R.menu.changescheme, menu);
        returntrue;
    }

@OverridepublicbooleanonOptionsItemSelected(MenuItem item){
        switch (item.getItemId()) {
        case R.id.changeScheme:
            //start activity herebreak;

        case R.id.help:
            //start activity herebreak;
        }
        returntrue;
    }

Solution 4:

Hi adam your code seem to be perfectly fine while i am testing on my emulator, please check whether you have added the class name "ColourActivity" to your manifest file.

<activityandroid:name="ColourActivity"></activity>

Solution 5:

I have solved the problem now.

It turns out the problem was not at all on the ListActivity class, it was in fact on the ColourActivity class.

I was attempting to parse a few colours in onCreate, but I had forgotten to include the # in one of the RGB colour strings, hence the crash!

Thanks heaps for everyone's help, Adam.