android 啟動延遲加載畫面

LoginActivity
package com.xkhouse.erm.erm;
import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
/* public class LoginActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        //requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
    }
}  */
public class LoginActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        /*
         * 設置隱藏標題欄
         */
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_login);
    }
}
/* public class SplashActivity extends Activity {
    private final int SPLASH_DISPLAY_LENGHT = 1000; //延遲一秒
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.jiazai);
        new Handler().postDelayed(new Runnable() {
            // 為了減少代碼使用匿名Handler創建一個延時的調用
            public void run() {
                Intent i = new Intent(SplashActivity.this, LoginActivity.class);
                // 通過Intent打開最終真正的主界面Main這個Activity
                SplashActivity.this.startActivity(i); // 啟動Main界面
                SplashActivity.this.finish(); // 關閉自己這個開場屏
            }
        }, SPLASH_DISPLAY_LENGHT);
    }
} */

SplashActivity

package com.xkhouse.erm.erm;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.Window;
import android.view.WindowManager;
/*public class SplashActivity extends Activity {
    private final int SPLASH_DISPLAY_LENGHT = 6000; // 延遲六秒
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
        new Handler().postDelayed(new Runnable() {
            public void run() {
                Intent mainIntent = new Intent(SplashActivity.this,
                        LoginActivity.class);
                SplashActivity.this.startActivity(mainIntent);
                SplashActivity.this.finish();
            }
        }, SPLASH_DISPLAY_LENGHT);
    }
} */
public class SplashActivity extends Activity {
    final private int SPLASH_TIME = 1000;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        /*
         * 設置全屏
         */
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        /*
         * 設置隱藏標題欄
         */
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        /*
         * 2秒后跳轉到主界面
         */
        new Handler().postDelayed(new Runnable() {
            public void run() {
                launchMainActivity();
            }
        }, SPLASH_TIME);
        setContentView(R.layout.activity_splash);
    }
    /*
     * 利用Intent切換到主Activity
     */
    private void launchMainActivity() {
        /*
     * 創建一個intent，從當前Activity指向要跳轉的Activity
     */
        Intent intent = new Intent(this, LoginActivity.class);
    /*
     * 啟動目標Activity
     */
        startActivity(intent);
    /*
     * 啟動畫面只需要程序開始時顯示一次，顯示完后即可退出
     */
        finish();
    }
}


layout目錄下
activity_splash.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="fill_parent" android:layout_width="fill_parent" android:orientation="vertical">
    <ImageView android:layout_height="fill_parent" android:layout_width="fill_parent" android:scaleType="fitCenter" android:src="@drawable/splash"></ImageView>
</LinearLayout>
AndroidMainfest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.xkhouse.erm.erm">
    <application
        android:allowBackup="true"
        android:icon="@drawable/logo"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
        <activity
            android:name="com.xkhouse.erm.erm.SplashActivity"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".LoginActivity"></activity>
    </application>
</manifest>