如何像启动画面一样只运行一次活动 [英] How to run an activity only once like Splash screen

问题描述

在我的应用程序中，我想在第一次运行时只运行一次启动画面，但问题是我已经在 Manifest 中放置了这一行:android:noHistory="true" 如果我按下后退按钮并退出应用程序，效果很好，但请注意，该应用程序仍在后台运行，当我按下应用程序图标时，它会再次返回初始屏幕，然后返回我的注册页面.我想在重新打开应用程序时直接重定向到注册页面.

In my app, I would like to run the Splash screen once at first run only but the problem is that I already placed in the Manifest this line: android:noHistory="true" which works great if I press back button and exits the app but note that the app is still in the background running, and when I press the app icon it goes back again to the Splash screen then my Registration page. I wanted to be redirected to the Registration page directly when I reopen my application.

我该怎么做?提前感谢您的任何建议.

How do I do this? Thanks ahead for any suggestions.

推荐答案

这就是我在 SplashActivity(onCreate) 中所做的:

So here's what I did, in my SplashActivity(onCreate):

    SharedPreferences settings = getSharedPreferences("prefs", 0);
    SharedPreferences.Editor editor = settings.edit();
    editor.putBoolean("firstRun", true);
    editor.commit();

    Intent intent = new Intent(this, RegistrationActivity.class);
    startActivity(intent);

SplashActivity(onResume):

SplashActivity(onResume):

@Override
public void onResume() {
    super.onResume();
    SharedPreferences settings = getSharedPreferences("prefs", 0);
    boolean firstRun = settings.getBoolean("firstRun", true);
    if (!firstRun) {
        Intent intent = new Intent(this, RegistrationActivity.class);
            startActivity(intent);
        Log.d("TAG1", "firstRun(false): " + Boolean.valueOf(firstRun).toString());
    } else {
        Log.d("TAG1", "firstRun(true): " + Boolean.valueOf(firstRun).toString());
    }
}

在我的 RegistrationActivity(onCreate) 中:

In my RegistrationActivity(onCreate):

    SharedPreferences settings = getSharedPreferences("prefs", 0);
    SharedPreferences.Editor editor = settings.edit();
    editor.putBoolean("firstRun", false);
    editor.commit();

    boolean firstRun = settings.getBoolean("firstRun", true);
    Log.d("TAG1", "firstRun: " + Boolean.valueOf(firstRun).toString());

然后禁用后退按钮以防止返回，除非用户按下主页:

And then disabled back button to prevent going back unless the user presses Home:

@Override
public void onBackPressed() {
}

非常感谢那些做出贡献的人！

Big thanks for those that contributed!

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