menu item home区域的的id

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
switch (id){
case R.id.action_settings:
return true;
case android.R.id.home:
Intent intent=new Intent(ExploreActivity.this,MainActivity.class);
startActivity(intent);
this.finish();
Log.i(TGA, ":back to main");
return true;
default:
return super.onOptionsItemSelected(item);
}
}