Webview 启动画面未按预期显示一次

Question

我正在尝试创建一个 webview 应用程序，在第一次午餐后显示一次启动画面。最初，一旦我打开应用程序，启动画面就会出现，然后在 5 秒后它将加载主 activity VaultActivity，但是在我添加了代码行以检查启动画面是否 'SplashScreen'之前已经启动，应用程序停止加载 VaultActivity 使用我设置的 SPLASH_TIME_OUT 并且启动画面仍然在我午餐应用程序的任何时候出现。

最初

public class SplashScreen extends Activity {

    private static int SPLASH_TIME_OUT = 5000;  // Splash screen timer

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);

            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    // Start main activity
                    Intent intent = new Intent(SplashScreen.this, VaultActivity.class);
                    startActivity(intent);
                    finish();
                }
            }, SPLASH_TIME_OUT);

    }
}

目前

public class SplashScreen extends Activity {

    private static int SPLASH_TIME_OUT = 5000;  // Splash screen timer

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);

        SharedPreferences pref = getSharedPreferences("ActivityPREF", Context.MODE_PRIVATE);
        if(pref.getBoolean("activity_executed", false)){
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    // Start main activity
                    Intent intent = new Intent(SplashScreen.this, VaultActivity.class);
                    startActivity(intent);
                    finish();
                }
            }, SPLASH_TIME_OUT);
        } else {
            SharedPreferences.Editor ed = pref.edit();
            ed.putBoolean("activity_executed", true);
            ed.commit();
        }
    }
}

我的清单

   <activity
        android:name=".SplashScreen"
        android:launchMode="singleTask"
        android:label="@string/app_name"
        android:screenOrientation="portrait" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <activity android:name=".VaultActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="android.intent.action.VIEW" />
            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.BROWSABLE" />
            <data android:scheme="http"
                android:host="example.com"
                android:pathPrefix="/androidmobile" />
        </intent-filter>
    </activity>

Answer 1

你必须在你的else中调用startActivity。

Answer 2

:) you need just adding startActivity in else section.

   public class SplashScreen extends Activity {



            private static int SPLASH_TIME_OUT = 5000;  // Splash screen timer

            @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_splash);

                SharedPreferences pref = getSharedPreferences("ActivityPREF", Context.MODE_PRIVATE);
final SharedPreferences.Editor ed = pref.edit()
                if(pref.getBoolean("activity_executed", false)){
                    //ed.putBoolean("activity_executed", true);
                    //ed.commit();

    Intent intent = new Intent(SplashScreen.this, VaultActivity.class);
                            startActivity(intent);
                            finish();
                } else {
                   new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            // Start main activity
                            Intent intent = new Intent(SplashScreen.this, VaultActivity.class);
                            startActivity(intent);

                    ed.putBoolean("activity_executed", true);
                    ed.commit();

                            finish();
                        }
                    }, SPLASH_TIME_OUT);

                }
            }
        }

Webview 启动画面未按预期显示一次

Webview Splash screen doen't show once as expected

java

android

splash-screen

webview