如何像闪屏运行的活动只有一次 [英] How to run an activity only once like Splash screen

问题描述

在我的应用程序，我想只有第一次运行运行闪屏一次，但问题是，我已经放在清单这行：安卓noHistory =真正的伟大的工程，如果我preSS后退按钮并退出应用程序，但请注意，该应用程序仍然在后台运行，当我preSS应用程序图标，它可以追溯到再次闪屏，然后我的注册页面。我想直接重定向到注册页面，当我重新打开我的应用程序。

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.

我如何做到这一点？提前感谢任何建议。

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

推荐答案

因此​​，这里是我做什么，我SplashActivity（的onCreate）：

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RegistrationActivity（的onCreate）：

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prevent回去，除非用户presses主页：

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

@Override
public void onBackPressed() {
}

大感谢那些贡献！

Big thanks for those that contributed!

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