simpleprefs.java

Android从入门到精通

package com.androidbook.simpleprefs;

import android.content.SharedPreferences;
import android.os.Bundle;

// First activity screen (start screen)

public class SimplePrefs extends SuperSimplePrefs {


	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        
        // Set some prefs for this specific activity
    	SharedPreferences settingsActivity = getPreferences(MODE_PRIVATE); 
    	if(settingsActivity.contains(PREFERENCE_STRING_NAME) == false)
    	{
    		// Set some new prefs
            SharedPreferences.Editor prefEditor = settingsActivity.edit();
            prefEditor.putBoolean("Boolean_Pref", false); 
            prefEditor.putFloat("Float_Pref", java.lang.Float.NEGATIVE_INFINITY); 
            prefEditor.putInt("Int_Pref", java.lang.Integer.MIN_VALUE); 
            prefEditor.putString(PREFERENCE_STRING_NAME, this.getLocalClassName()); 
            prefEditor.commit();
    	}

    	super.onCreate(savedInstanceState);
    }


	@Override
	Class<?> GetTargetClass() {
		// Where the "Go to other activity" action will send us
		return MoreSimplePrefs.class;
	}
}