手机安全卫士day01

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今天实现效果如下

目标实现：

1.开始动画，欢迎界面 done

2.初始导航 done

3.版本信息没做。。。

每个应用在第一打开时都有个欢迎动画，那我们今天就来实现它

第一步，实现欢迎动画

目标：边旋转边放大

有三个动画 旋转0-360 缩放0-1 透明度 0-1

public class WelcomeMainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    requestWindowFeature(Window.FEATURE_NO_TITLE);    setContentView(R.layout.activity_main);    ImageView imageView = (ImageView) findViewById(R.id.welcome_iv);    /**     * animation conbine     */    AnimationSet set = new AnimationSet(false);    // 边旋转边放大    RotateAnimation rotateAnimation = new RotateAnimation(0,360, Animation.RELATIVE_TO_SELF, 0.5f,            Animation.RELATIVE_TO_SELF, 0.5f);    rotateAnimation.setDuration(3000);// 设置时间为两秒    rotateAnimation.setFillAfter(true);// 设置最终状态为填充效果    set.addAnimation(rotateAnimation);// 将旋转动画添加到动画集合中    /**     *      */    ScaleAnimation scaleAnimation=new ScaleAnimation(            0, 1,             0, 1, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);    rotateAnimation.setDuration(3000);//     rotateAnimation.setFillAfter(true);// 设置最终状态为填充效果    set.addAnimation(scaleAnimation);// 将缩放动画添加到动画集合中    /**     * 第三个动画来自xml     */    Animation animation=AnimationUtils.loadAnimation(this, R.anim.alpha);    set.addAnimation(animation);// 将透明度动画添加到动画集合中    set.setAnimationListener(new AnimationListener() {        //begin        @Override        public void onAnimationStart(Animation animation) {            // TODO Auto-generated method stub        }        //repeat        @Override        public void onAnimationRepeat(Animation animation) {            // TODO Auto-generated method stub        }        //end        @Override        public void onAnimationEnd(Animation animation) {            // TODO Auto-generated method stub            ToastUtils.show(getApplicationContext(), "欢迎来到德莱联盟");            //the animation end enter the guideActivity            Intent intent=new Intent();            intent.setClass(getApplicationContext(), GuideActivity.class);            startActivity(intent);            finish();        }    });    imageView.startAnimation(set);      }}

效果如下

第二步，实现导航的轮播效果

主要代码

public class ActivityGuide extends Activity {private List
     
       mPageList;private Context context;private Button btn;@Overrideprotected void onCreate(Bundle savedInstanceState) {    // TODO Auto-generated method stub    super.onCreate(savedInstanceState);    requestWindowFeature(Window.FEATURE_NO_TITLE);    setContentView(R.layout.guidelayout);    ViewPager mGuideViewPager = (ViewPager) findViewById(R.id.viewpager);    btn = (Button) findViewById(R.id.guide_enter_btn);    // page list    context = this;    // init page    initpage();    // 2.initdata by adapter    mGuideViewPager.setAdapter(new PagerAdapter() {        // is the view from object or from fragment        @Override        public boolean isViewFromObject(View arg0, Object arg1) {            // TODO Auto-generated method stub            return arg0 == arg1;        }        // view items count        @Override        public int getCount() {            // TODO Auto-generated method stub            return mPageList == null ? 0 : mPageList.size();        }        // DESTORY the view items        @Override        public void destroyItem(ViewGroup container, int position, Object object) {            // TODO Auto-generated method stub            container.removeView(mPageList.get(position));        }        /**         * init view items pass position container ViewGroup ViewPager         */        @Override        public Object instantiateItem(ViewGroup container, int position) {            // TODO Auto-generated method stub            container.addView(mPageList.get(position));            return mPageList.get(position);        }    });    // 3、对viewpage进行监听    mGuideViewPager.addOnPageChangeListener(new OnPageChangeListener() {        //当页面被选择则回调该方法        @Override        public void onPageSelected(int position) {            if(position==(mPageList.size()-1)){                btn.setVisibility(View.VISIBLE);            }else{                btn.setVisibility(View.GONE);            }        }        //页面滚动回调该方法        @Override        public void onPageScrolled(int arg0, float arg1, int arg2) {        }        //当页面滚动状态改变        @Override        public void onPageScrollStateChanged(int arg0) {        }    });}//private void initpage() {    // TODO Auto-generated method stub    mPageList = new ArrayList
      
       ();    ImageView imageView = new ImageView(context);    imageView.setBackgroundResource(R.drawable.guide_1);    mPageList.add(imageView);    ImageView imageView2 = new ImageView(context);    imageView2.setBackgroundResource(R.drawable.guide_2);    mPageList.add(imageView2);    ImageView imageView3 = new ImageView(context);    imageView3.setBackgroundResource(R.drawable.guide_3);    mPageList.add(imageView3);}public void entersystem(View view) {    Intent intent = new Intent(this, SplashActivity.class);    startActivity(intent);    finish();}}
      
     

Viewpage是viewgroup的子类

能实现水平的滑动效果

来看布局文件

毕竟是项目 细节不是太好说的清楚，主要是看大概然后跟着流程一步一步来