Android 在一定时间后打开活动？

我想在我的应用程序中实现SplashScreen。我发现最好、最简单的方法是启动一个活动，在应用程序启动时显示带有图像视图的布局，然后将android:noHistory=“true”属性添加到清单中。 现在，如何设置splashscreen活动以在一定时间后启动MainActivity类？比如说2秒钟

这是我的splashscreen活动

public class SplashActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.splashscreen);
}
}

使用

---

这是一个完整的样本

package com.test.splash;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.ImageView;

public class splash extends Activity {

    private static final int STOPSPLASH = 0;
    //time in milliseconds
    private static final long SPLASHTIME = 3000;a

    private ImageView splash;

    //handler for splash screen
    private Handler splashHandler = new Handler() {
        /* (non-Javadoc)
         * @see android.os.Handler#handleMessage(android.os.Message)
         */
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
            case STOPSPLASH:
                //remove SplashScreen from view
                splash.setVisibility(View.GONE);
                break;
            }
            super.handleMessage(msg);
        }
    };

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);
            splash = (ImageView) findViewById(R.id.splashscreen);
            Message msg = new Message();
            msg.what = STOPSPLASH;
            splashHandler.sendMessageDelayed(msg, SPLASHTIME);
    }
}

---

您还可以通过以下方式使用

java.util.Timer

：

new Timer().schedule(new TimerTask(){
    public void run() { 
        startActivity(new Intent(SplashActivity.this, MainActivity.class));
    }
}, 2000 /*amount of time in milliseconds before execution*/ );

公共类TrackMyMoneyActivity扩展活动{
//成员字段
private ProgressBar pbar=null；
私有文本视图计数器_txt=null；
Thread splash_Thread=null；
/**在首次创建活动时调用*/
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.main）；
pbar=（ProgressBar）findviewbyd（R.id.splashpbar）；
counter_txt=（TextView）findViewById（R.id.countertxt）；
//定义线程
splash_thread=新线程（new Runnable（）{
@凌驾
公开募捐{
//TODO自动生成的方法存根
int i=0；
对于（i=0；我可以将你的代码与我的代码合并吗？我每次尝试都会出错。仍然是一个noob，对不起！只需在类中声明一个处理程序。并使用我在onCreate（）中给出的代码方法在SetContentView之后只是一个关于使用标记no history的警告-在启动任何其他活动后，系统将随时完成该活动。这完全超出了应用程序代码的控制。因此，不要释放no_history活动的destroy函数中的任何内容。这将导致意外和难以调试例外情况
new Timer().schedule(new TimerTask(){
    public void run() { 
        startActivity(new Intent(SplashActivity.this, MainActivity.class));
    }
}, 2000 /*amount of time in milliseconds before execution*/ );

public class TrackMyMoneyActivity extends Activity {
//member fields
private ProgressBar pbar = null;
private TextView counter_txt = null;
Thread splash_thread = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    pbar = (ProgressBar) findViewById(R.id.splashpbar);
    counter_txt = (TextView) findViewById(R.id.countertxt);
    //define thread
    splash_thread = new Thread(new Runnable() {

        @Override
        public void run() {
            // TODO Auto-generated method stub
            int i = 0;
              for( i=0;i<100;i++){

                  pbar.setProgress(i);

                 // counter_txt.setText(i+" %");
                  try {
                    splash_thread.sleep(100);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
              }
              if(i==100){
                  Intent intent = new Intent(getBaseContext(), LoginApp.class);
                  startActivity(intent);
              }
        }
    });
    splash_thread.start();

}
@Override
protected void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();


}

public class Splashscreen extends Activity 
    {
  private static final int SPLASH_TIME = 10 * 1000;// 3 seconds


  Button logo;
  @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// requestWindowFeature(Window.FEATURE_NO_TITLE);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.splashscreen);
 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    try {
    new Handler().postDelayed(new Runnable() {

        public void run() {

            Intent intent = new     Intent(Splashscreen.this,MainActivity.class);
            startActivity(intent);

            Splashscreen.this.finish();

            //overridePendingTransition(R.anim.fade_in, R.anim.fade_out);

        }


    }, SPLASH_TIME);

    new Handler().postDelayed(new Runnable() {
          public void run() {
                 } 
            }, SPLASH_TIME);
    } catch(Exception e){}
// METHOD 1     

/****** Create Thread that will sleep for 5 seconds *************/        
Thread background = new Thread() {
   public void run() {

       try {
           // Thread will sleep for 5 seconds
           sleep(50*1000);

           // After 5 seconds redirect to another intent
           Intent i=new Intent(getBaseContext(),MainActivity.class);
           startActivity(i);

           //Remove activity
           finish();

       } catch (Exception e) {

         }
       }
     };


     background.start();



      }