AppStart.java

package org.kymjs.music;

import org.kymjs.kjframe.KJActivity;
import org.kymjs.kjframe.ui.BindView;
import org.kymjs.music.service.ScanMusic;
import org.kymjs.music.ui.FirstInstallActivity;
import org.kymjs.music.ui.Main;
import org.kymjs.music.utils.PreferenceHelper;

import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.Window;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;

public class AppStart extends KJActivity {

    @BindView(id = R.id.img_start)
    private ImageView mImageView;

    @Override
    public void setRootView() {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); // 竖屏锁定
        requestWindowFeature(Window.FEATURE_NO_TITLE); // 取消标题
        setContentView(R.layout.aty_start);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Animation animation = AnimationUtils.loadAnimation(this, R.anim.alpha);
        // 监听动画过程
        animation.setAnimationListener(new AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {}

            @Override
            public void onAnimationRepeat(Animation animation) {}

            @Override
            public void onAnimationEnd(Animation animation) {
                redirectTo();
            }
        });

        mImageView.setAnimation(animation);
    }

    /**
     * 跳转到...
     */
    private void redirectTo() {
        Intent intent = new Intent();
        if (firstsInstall()) {
            intent.setClass(this, FirstInstallActivity.class);
        } else {
            intent.setClass(this, Main.class);
        }
        startActivity(intent);
        overridePendingTransition(R.anim.in_from_right, R.anim.out_to_left);
        finish();
    }

    /**
     * 判断首次使用
     */
    private boolean firstsInstall() {
        boolean isFirst = PreferenceHelper.readBoolean(this,
                Config.FIRSTINSTALL_FILE, Config.FIRSTINSTALL_KEY, true);
        return isFirst;
    }

    /**
     * 扫描本地歌曲（暂不需要）
     */
    private void loadRes() {
        Intent it = new Intent();
        it.setClass(this, ScanMusic.class);
        startService(it);
    }

}