android应用的loading加载动画制作

加载界面只需要一张logo，颜色渐深，三秒显示后跳入下一个activity，同时去掉标题栏与状态栏。代码如下：AppLoadingActivity.java中

public class AppLoadingActivity extends Activity {

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

     // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        // 取消标题栏(也可以在manifest里面配置)

        // this.requestWindowFeature(Window.FEATURE_NO_TITLE);

        // 取消状态栏

        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.app_loading);

        // 三秒钟之后进入login

        ImageView loadingIv = (ImageView) this.findViewById(R.id.logo_bg);

        // 从浅到深,从百分之10到百分之百

        AlphaAnimation animation = new AlphaAnimation(0.1f, 1.0f);

        animation.setDuration(3000);

        loadingIv.setAnimation(animation);

        // 给animation设置监听器

        animation.setAnimationListener(new AnimationListener() {

            @Override

            public void onAnimationStart(Animation animation) {

                // TODO Auto-generated method stub

            }

            @Override

            public void onAnimationRepeat(Animation animation) {

                // TODO Auto-generated method stub

            }

            @Override

            public void onAnimationEnd(Animation animation) {

                // TODO Auto-generated method stub

                // 三秒之后跳出

                Intent it = new Intent(AppLoadingActivity.this, MainActivity.class);

                startActivity(it);

                // 三秒之后 这个窗口就没用了 应该finish

                finish();

            }

        });

    }

}

app_loading.xml:

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    >

<ImageView  

    android:id="@+id/logo_bg"

    android:background="@drawable/app_loading"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    />

</LinearLayout>

AppLoadingManifest.xml:

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

      package="com.android.aming.apploading"

      android:versionCode="1"

      android:versionName="1.0">

    <uses-sdk android:minSdkVersion="7" />

    <application android:icon="@drawable/icon" android:label="@string/app_name"

//这个属性可以消除加载应用中间的黑屏

    android:theme="@android:style/Theme.Translucent">

        <activity android:name=".AppLoadingActivity"

                  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=".MainActivity">

        </activity>

    </application>

</manifest>