启动第二个ACTIVITY

        Intent intent = new Intent();
        intent.setClass(this, SecondActivity.class);
        startActivity(intent);
        //
        Intent intent1 = new Intent(this, SecondActivity.class);
        startActivity(intent1);

 

        Intent intent2 = new Intent();
        intent2.setClassName("com.sice.linson.myintent", "com.sice.linson.myintent.SecondActivity");
        startActivity(intent2);