教你制作漂亮的Android之缓存界面

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();
    }
}