Android之打造漂亮的缓存界面

先贴上两张图展示界面：

上面的字体会动态显示，这种效果在我们启动一个应用程序时，经常使用

代码如下：

UIDemoActivity的代码：

public class UIDemoActivity extends Activity {    /** Called when the activity is first created. */	private Animation mAnimation;	private int marginTop;	private List<ImageView> mimageView;	private LinearLayout mLinearLayout;	private int[] imageId = {R.drawable.l, R.drawable.a, R.drawable.o, R.drawable.d,             R.drawable.i, R.drawable.n, R.drawable.g};    @Override    public void onCreate(Bundle savedInstanceState)     {        super.onCreate(savedInstanceState);        //设置全屏        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);        //设置无标题        this.requestWindowFeature(Window.FEATURE_NO_TITLE);        //获取屏幕的尺寸信息        DisplayMetrics dm=this.getResources().getDisplayMetrics();        marginTop=dm.heightPixels-100;                //载入动画        mAnimation=AnimationUtils.loadAnimation(this, R.anim.cache);                mLinearLayout=new LinearLayout(this);        mLinearLayout.setBackgroundResource(R.drawable.background);                mimageView=new ArrayList<ImageView>();                imageInit(mLinearLayout);        this.setContentView(mLinearLayout);        startAnimation();    }            private void imageInit(LinearLayout layout)    {    	layout.setGravity(Gravity.CENTER_HORIZONTAL);    	//layout.setOrientation(LinearLayout.VERTICAL);    	    	//定义两个布局参数    	LinearLayout.LayoutParams param1=new LinearLayout.LayoutParams(40,40);    	param1.setMargins(0,marginTop, 0, 0);    	    	LinearLayout.LayoutParams param2=new LinearLayout.LayoutParams(40,40);    	param2.setMargins(0,marginTop, 0, 0);    	    	ImageView l = new ImageView(this);    	//应用LayoutParam    	l.setLayoutParams(param1);    	layout.addView(l);    	mimageView.add(l);    	    	ImageView o = new ImageView(this);    	o.setLayoutParams(param2);    	layout.addView(o);    	mimageView.add(o);    	    	ImageView a = new ImageView(this);    	a.setLayoutParams(param2);    	layout.addView(a);    	mimageView.add(a);    	    	ImageView d = new ImageView(this);    	d.setLayoutParams(param2);    	layout.addView(d);    	mimageView.add(d);    	    	ImageView i = new ImageView(this);    	i.setLayoutParams(param2);    	layout.addView(i);    	mimageView.add(i);    	    	ImageView n = new ImageView(this);    	n.setLayoutParams(param2);    	layout.addView(n);    	mimageView.add(n);    	    	ImageView g = new ImageView(this);    	g.setLayoutParams(param2);    	layout.addView(g);    	mimageView.add(g);    }        private void imageClear() {    	for(ImageView image:mimageView) {    		//将ImageView置为空    		image.setImageDrawable(null);    		//清除缓存    		image.destroyDrawingCache();		    	}    }        Handler handler=new Handler()    {		@Override		public void handleMessage(Message msg)		{			// TODO Auto-generated method stub			switch(msg.what)			{			case 0:					mimageView.get(0).setImageDrawable(UIDemoActivity.this.getResources().getDrawable(R.drawable.l));					mimageView.get(0).setAnimation(mAnimation);				break;			case 1:				mimageView.get(1).setImageDrawable(UIDemoActivity.this.getResources().getDrawable(R.drawable.o));				mimageView.get(1).setAnimation(mAnimation);				break;			case 2:				mimageView.get(2).setImageDrawable(UIDemoActivity.this.getResources().getDrawable(R.drawable.a));				mimageView.get(2).setAnimation(mAnimation);				break;			case 3:				mimageView.get(3).setImageDrawable(UIDemoActivity.this.getResources().getDrawable(R.drawable.d));				mimageView.get(3).setAnimation(mAnimation);				break;			case 4:				mimageView.get(4).setImageDrawable(UIDemoActivity.this.getResources().getDrawable(R.drawable.i));				mimageView.get(4).setAnimation(mAnimation);				break;			case 5:				mimageView.get(5).setImageDrawable(UIDemoActivity.this.getResources().getDrawable(R.drawable.n));				mimageView.get(5).setAnimation(mAnimation);				break;			case 6:				mimageView.get(6).setImageDrawable(UIDemoActivity.this.getResources().getDrawable(R.drawable.g));				mimageView.get(6).setAnimation(mAnimation);				break;			case 100:				imageClear();				break;						}		}    	    };        public void startAnimation()    {    	new Thread()    	{    		public void run() {    			try				{					Thread.sleep(1000);				} catch (InterruptedException e)				{					// TODO Auto-generated catch block					e.printStackTrace();				}								int runCount=0;				while(true)				{					if(runCount<2)					{						for(int i=0;i<7;i++)						{							handler.sendEmptyMessage(i);							try							{								Thread.sleep(400);							} catch (InterruptedException e)							{								// TODO Auto-generated catch block								e.printStackTrace();							}						}						handler.sendEmptyMessage(100);						runCount++;					}					else					{						Intent intent=new Intent(UIDemoActivity.this,SecendActivity.class);						UIDemoActivity.this.startActivity(intent);						break;					}				}    		};    	}.start();    }}

2、动画xml

<?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="0.0" 		android:toXScale="1.2" 		android:fromYScale="0.0"		android:toYScale="1.2" 		android:pivotX="50%" 		android:pivotY="50%"		android:fillAfter="false" 		android:startOffset="-50"		android:duration="100"/>    </set>