Android UI开发第十五篇――分享一个登录缓冲界面

今天在网上发现了一个很漂亮的缓冲界面，在这里分享一下。主要还是用的android Anim。

public class Main extends Activity {
    private Animation anm;
    private int marginsTop;
    public List<ImageView> images;
    public LinearLayout ll;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

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

        requestWindowFeature(Window.FEATURE_NO_TITLE);

        DisplayMetrics dm = this.getResources().getDisplayMetrics();

        int height = dm.heightPixels;
        marginsTop = height - 100;
        anm = AnimationUtils.loadAnimation(this, R.anim.myanim);
        ll = new LinearLayout(this);
        ll.setBackgroundResource(R.drawable.background);

        images = new ArrayList<ImageView>();
        initImage(ll);
        playAnimation();
        setContentView(ll);
    }
    private void playAnimation(){
            new Thread(){
                @Override
                public void run()
                {
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    int runcount=0;
                    while(true)
                    {
                        if(runcount<2)
                        {
                            for(int i=0;i<=6;i++)
                            {
                                handler.sendEmptyMessage(i);
                                try {
                                    Thread.sleep(400);
                                } catch (InterruptedException e) {
                                    e.printStackTrace();
                                }
                            }
                            runcount++;
                        }else
                        {
                            handler.sendEmptyMessage(99);
                            runcount=0;
                        }


                    }

                }

            }.start();
        }


    Handler handler=new Handler(){

                @Override
                public void handleMessage(Message msg) {
                    switch(msg.what)
                    {
                    case 0:
                        images.get(0).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.l));
                        images.get(0).startAnimation(anm);

                        break;
                    case 1:
                        images.get(1).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.o));
                        images.get(1).startAnimation(anm);
                        break;
                    case 2:
                        images.get(2).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.a));
                        images.get(2).startAnimation(anm);
                        break;
                    case 3:
                        images.get(3).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.d));
                        images.get(3).startAnimation(anm);
                        break;
                    case 4:
                        images.get(4).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.i));
                        images.get(4).startAnimation(anm);
                        break;
                    case 5:
                        images.get(5).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.n));
                        images.get(5).setAnimation(anm);
                        break;
                    case 6:
                        images.get(6).setImageDrawable(Main.this.getResources().getDrawable(R.drawable.g));
                        images.get(6).setAnimation(anm);
                        break;
                    case 99:
                        clearImage();
                        break;
                    }
                }
            };
    private void clearImage()
    {
        for(ImageView image:images)
        {
            image.setImageDrawable(null);
            image.destroyDrawingCache();
        }
    }
    private void initImage(LinearLayout layout) {

        layout.setGravity(Gravity.CENTER_HORIZONTAL);
        LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(40, 40);
        param.setMargins(30, marginsTop, 0, 0);

        LinearLayout.LayoutParams param2 = new LinearLayout.LayoutParams(40, 40);
        param2.setMargins(-5, marginsTop, 0, 0);

        ImageView l = new ImageView(this);
        l.setLayoutParams(param);
        layout.addView(l);
        images.add(l);

        ImageView o = new ImageView(this);
        o.setLayoutParams(param2);
        layout.addView(o);
        images.add(o);


        ImageView a = new ImageView(this);
        a.setLayoutParams(param2);
        layout.addView(a);
        images.add(a);

        ImageView d = new ImageView(this);
        d.setLayoutParams(param2);
        layout.addView(d);
        images.add(d);

        ImageView i = new ImageView(this);
        i.setLayoutParams(param2);
        layout.addView(i);
        images.add(i);

        ImageView n = new ImageView(this);
        n.setLayoutParams(param2);
        layout.addView(n);
        images.add(n);

        ImageView g = new ImageView(this);
        g.setLayoutParams(param2);
        layout.addView(g);
        images.add(g);
    }
}

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

<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <scale android:interpolator="@android:anim/accelerate_interpolator"
        android:fromXScale="0.5"
        android:toXScale="1.2"
        android:fromYScale="0.5"
        android:toYScale="1.2"
        android:pivotX="50%"
        android:pivotY="50%"
        android:fillAfter="false"
        android:startOffset="-50"
        android:duration="100"
/>
</set>

代码地址：http://www.devdiv.com/thread-101608-1-1.html

/**
* @author 张兴业
* 邮箱：[email protected]
* qq:363302850
*/