仅显示一次启动画面 [英] show splash screen one time only

问题描述

我有一个广播AAC播放器，我在开始时添加了一个启动屏幕，但是我只想显示一次，因为如果用户按下后退"按钮，我的应用程序会停留在背景上，并且正在播放音乐服务，但是当我回到应用程序再次显示启动屏幕.这是我实际的启动画面代码:

I have a radio aac player I added a splash screen at the beginning, but I would like to show it just one time, because if user press back button my app stays on background with a music service playing, but when I go back to the app shows splash screen again. Here is my actual splashscreen code:

public class Inicio extends Activity {
       private Handler handler = new Handler()
        {
            public void handleMessage(Message msg)
            {
                Intent i = new Intent(Inicio.this, ScreenTabs.class);
                Inicio.this.startActivity(i);
                Inicio.this.finish();
            }
        };

        protected void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);

            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
            if(!prefs.getBoolean("first_time", false))
            {
                /* 
                // we will set this true when our ScreenTabs activity
                   ends or the service playing music is stopped.
                SharedPreferences.Editor editor = prefs.edit();
                editor.putBoolean("first_time", true);
                editor.commit();

                */

                Intent i = new Intent(Inicio.this, ScreenTabs.class);
                this.startActivity(i);
                                     this.finish();
            }
            else
            {
                this.setContentView(R.layout.inicio);
                handler.sendEmptyMessageDelayed(0, 2000);
            }
        }
}

screentabs.java的毁灭

Ondestroy of screentabs.java

@Override
protected void onDestroy() {
    super.onDestroy();
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
      SharedPreferences.Editor editor = prefs.edit();
                    editor.putBoolean("first_time", true);
                    editor.commit();
    if(radioService!=null) {
        if(!radioService.isPlaying() && !radioService.isPreparingStarted()) {
            //radioService.stopSelf();
            radioService.stop();

            radioService.stopService(bindIntent);
            radioService.exitNotification();
        }
    }   
}

为了在首次启动应用程序时显示启动屏幕，我可以更改或添加什么?

What can I change or add in order to show splash screen just first time app is initiated?

推荐答案

public class Inicio extends Activity {
   private Handler handler = new Handler()
    {
        public void handleMessage(Message msg)
        {
            Intent i = new Intent(Inicio.this, ScreenTabs.class);
            Inicio.this.startActivity(i);
            Inicio.this.finish();
        }
    };

    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        if(!prefs.getBoolean("first_time", false))
        {
            /* 
            // we will set this true when our ScreenTabs activity
               ends or the service playing music is stopped.
            SharedPreferences.Editor editor = prefs.edit();
            editor.putBoolean("first_time", true);
            editor.commit();

            */

            Intent i = new Intent(Inicio.this, ScreenTabs.class);
            this.startActivity(i);
                                 this.finish();
        }
        else
        {
            this.setContentView(R.layout.inicio);
            handler.sendEmptyMessageDelayed(0, 2000);
        }

该服务的ScreenTabs活动的onDestory实施和该服务的onDestroy方法

Implement onDestory of the ScreenTabs activity and onDestroy method of the service and there

@Override
public void onDestory(){
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
  SharedPreferences.Editor editor = prefs.edit();
                editor.putBoolean("first_time", true);
                editor.commit();
}

以及类似的服务onDestory

@Override
public void onDestory(){
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
  SharedPreferences.Editor editor = prefs.edit();
                editor.putBoolean("first_time", true);
                editor.commit();
}

我们在这里所做的操作是，只有在ScreenTabs活动结束或音乐播放服务停止后，用于检查是否显示Splash的首选项值first_time才设置为true.

What we do here that the preference value first_time which checks that Splash should be shown or not is set to true only when the ScreenTabs activity is finished or the music playing service is stopped.

这篇关于仅显示一次启动画面的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！