Question

我想首先在我的应用上显示一个splashScreen几秒钟，然后在java中使用timer加载我的所有线程数据，那我该怎么办呢。

Answer 1

为您的项目添加启动画面活动... 现在将SplashScree.java文件代码替换为：

    package samples.splash.screen;

    import android.app.Activity;
    import android.os.Bundle;
    import android.os.Handler;

    /**
     * Splash screen activity
     *
     * @author Catalin Prata
     */
    public class SplashScreen extends Activity {

        // used to know if the back button was pressed in the splash screen activity and avoid opening the next activity
        private boolean mIsBackButtonPressed;
        private static final int SPLASH_DURATION = 2000; // 2 seconds


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

            setContentView(R.layout.splash_screen);

            Handler handler = new Handler();

            // run a thread after 2 seconds to start the home screen
            handler.postDelayed(new Runnable() {

                @Override
                public void run() {

                    // make sure we close the splash screen so the user won't come back when it presses back key

                    finish();

                    if (!mIsBackButtonPressed) {
                        // start the home screen if the back button wasn't pressed already 
                        Intent intent = new Intent(SplashScreen.this, Home.class);
                        SplashScreen.this.startActivity(intent);
                   }

                }

            }, SPLASH_DURATION); // time in milliseconds (1 second = 1000 milliseconds) until the run() method will be called

        }

        @Override
       public void onBackPressed() {

            // set the flag to true so the next activity won't start up
            mIsBackButtonPressed = true;
            super.onBackPressed();

        }

}

splash_screen xml看起来像这样：你应该在你的drawables中有任何名为的图像：“splash_screen”

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:background="@drawable/splash_screen"/>

现在让您的启动画面成为清单文件中的启动器活动，使其成为启动活动.. 并且为了获得应用程序的标题栏，只需在清单中添加他的活动并添加主题，如下所示：

<activity android:name=".SplashScreen" android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen">
            <intent-filter>
                <action android:name="android.intent.action.MAIN">
                <category android:name="android.intent.category.LAUNCHER">
            </category></action></intent-filter>
        </activity>

Answer 2

在Java（Swing）中访问以下关于启动画面的优秀教程。

Adding a splash screen to your application

使用Timer显示SplashScreen

2 个答案: