单击菜单中的项目后，如何显示文本框。 Android的

Question

I am totally new to android development and I am currently working on my first app(will not appear on the market).I am using this app as a learning experience. I have no formal education because I am still in high school. My problem is that after a menu item is clicked, I cant get a text box to appear. Also, how would I add more items to my menu? Thank you(Sorry for my ignorance in android development... ).

 @Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
        case R.id.action_settings:
            actset();
            return true;

        default:
            return super.onOptionsItemSelected(item);
    }
}
private void actset() {
    // TODO Auto-generated method stub
    System.out.println("Developed By Shirwa Mohamed.. ");
}

Answer 1

Probably the easiest way to get what you want is to show a Toast .

Instead of using System.out.println in actset , try this:

Toast.makeText(
    getApplicationContext(),
    "Developed By Shirwa Mohamed.. ",
    Toast.LENGTH_SHORT).show();

Answer 2

for the education purpose I'd propose to use Toast for a lightweight messages:

Toast.makeText( this, "Developed By Shirwa Mohamed.. ", Toast.LENGTH_LONG).show();

because System.out.println does not show up on Android screen.

If you want more golden stars, you may create full-blown AlertDialog box:

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Developed by");
builder.setMessage("Shirwa Mohamed");
builder.setPositiveButton( "ok", null);
builder.create().show();

Answer 3

As others have stated, a Toast object may work for what you want. It will show a messages for a short amount of time and then disappear. However, if you want more control or would like to display more information then you may consider either an AlertDialog which would show a small window displaying whatever information you wanted.

Or, if you want more functionality, you can create a separate class and declare

android:theme="@android:style/Theme.Dialog" 

in the <activity tag of your manifest . This will show a separate Activity with a Dialog look. Then you just use an Intent to start that Activity