Study Notes for Android beginners-menu 1

Study Notes for Android beginners-menu 1

Mainactivity. java start to load menu

@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}

Configure the menu in main. xml under menu under res

Android: orderInCatagory menu sorting

Android: id index primary key

Android: title menu name

Menu RESPONSE event

public boolean onOptionsItemSelected(MenuItem item){switch(item.getItemId()){case R.id.lidl:Toast.makeText(this, "t1", Toast.LENGTH_SHORT).show();break;case R.id.end:Toast.makeText(this, "t2", Toast.LENGTH_SHORT).show();break;}return super.onOptionsItemSelected(item);}

You can use the sibling cloud class to learn the menu setting process, as well as the custom icons for menus earlier than 2.3, and disable this function after 2.3.

At this stage, I feel a little confused about many calling methods.