layout.xml file has button, I can't figure out how to link each button to open a new preference screen

layout.xml file has button, I can't figure out how to link each button to open a new preference screen.

looking to rearrange my app, currently it's all preference screen, w开发者_如何学编程antedto change it to revamp the UI a little to have buttons on the main page, and each one will open a new preference screen that I already have set up, any advice, I can't seem to figure out how to have it just open that already made preference scree.

For something like going to another screen from a home screen, i'll do somethingl ike this:

ImageView floor = (ImageView)findViewById(R.id.floor);
floor.setOnClickListener(new OnClickListener() {
    public void onClick(View v) {   
        Intent intent = new Intent(Home.this, WheelDemo.class);
        startActivity(intent);
    }
});

floor is a button image, it starts the new activity, WheelDemo when it is clicked on and goes to a new screen for that activity. Jut make sure each activity is registered in your manifest.

First, how to get some Java code executed when you click on a button:

• in layout xml file, add android:onClick="onSomethingDescriptiveClick"
• in your activity, add a method public void onSomethingDescriptiveClick(View caller) {}

This method will be executed, when you click on a button in running app. Replace SomethingDescriptive with, uh, something descriptive. For example, if your button says "Preferences", the callback method could be onPreferencesClick.

Next, consult this to see how to start a new activity: http://developer.android.com/guide/topics/fundamentals/activities.html#StartingAnActivity

I used a normal EditTextPreference but handled onPreferenceClick to cancel the dialog and catch the click.

 mbtnCheckUpdate.setText ("Check Updates.");
 mbtnCheckUpdate.setOnPreferenceClickListener( new OnPreferenceClickListener()
    {
        @Override
        public boolean onPreferenceClick(Preference arg0)
        {
            ((EditTextPreference)arg0).getDialog().cancel();
            return true;
        }
    }
    );