Question

尝试在第一次午餐后创建一个显示启动画面的webview应用程序。最初，一旦我打开应用程序，启动屏幕将显示，然后在5秒后它将加载主要活动VaultActivity，但在我添加了代码行以检查之前是否已启动启动画面“SplashScreen”，应用停止使用我设置的VaultActivity加载SPLASH_TIME_OUT，并且只要我在应用程序中午餐时，启动屏幕仍会显示。

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

您必须在其他地方调用startActivity。

Answer 2

:)你只需要在else部分添加startActivity。

   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 Splash屏幕没有按预期显示一次

2 个答案: