public class MainActivity extends Activity {	private ImageView iv_ads;	String urrstrString = "http://a.hiphotos.baidu.com/image/pic/item/7af40ad162d9f2d3f7ec95eeabec8a136327cc36.jpg";	Bitmap bitmap;	ProgressDialog pDialog;	private Handler handler = new Handler();	private Runnable runnable = new Runnable() {		@Override		public void run() {			try {				Thread.currentThread();				Thread.sleep(10000);				startActivity(new Intent(MainActivity.this, NextActivity.class));			} catch (InterruptedException e) {				e.printStackTrace();			}		}	};	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		requestWindowFeature(Window.FEATURE_NO_TITLE);		setContentView(R.layout.activity_main);		iv_ads = (ImageView) findViewById(R.id.iv_ads);		new LoadImage().execute(urrstrString);		iv_ads.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				MainActivity.this.startActivity(new Intent(MainActivity.this,						AdsActivity.class));			}		});	}	private class LoadImage extends AsyncTask
     
       {		@Override		protected void onPreExecute() {			super.onPreExecute();			pDialog = new ProgressDialog(MainActivity.this);			pDialog.setMessage("Loading Image ....");			pDialog.show();		}		protected Bitmap doInBackground(String... args) {			try {				bitmap = BitmapFactory.decodeStream((InputStream) new URL(						urrstrString).getContent());			} catch (Exception e) {				e.printStackTrace();			}			return bitmap;		}		protected void onPostExecute(Bitmap image) {			if (image != null) {				iv_ads.setImageBitmap(image);				pDialog.dismiss();				handler.postDelayed(runnable, 4000);			} else {				pDialog.dismiss();				Toast.makeText(MainActivity.this,						"Image Does Not exist or Network Error",						Toast.LENGTH_SHORT).show();			}		}	}}
     

　　异步线程与直接在oncreate() 中Thread.sleep()达不到预期的停留几秒的效果，可以用Handler发送消息，来实现效果...............