Component组件 创建ComponentName对象 Intentintent =new Intent(); ComponentName component new ComponentName (MainActivity.this SecondActivity.class); intent.setComponent (component); startActivity(intent); 使用setClass((O方法指定待启动组件 Intent intent new Intent () intent.setclass (MainActivity.this SecondActivity.class startActivity(intent); Context>对象 Class对象 使用Intent(O构造方法指定启动组件 Intent intent new Intent(MainActivity.this,SecondActivity.class); startActivity(intent); • Intent intent =new Intent(); ComponentName component = new ComponentName(MainActivity.this ,SecondActivity.class); intent.setComponent(component); startActivity(intent); • Intent intent = new Intent(); intent.setClass(MainActivity.this,SecondActivity.class); startActivity(intent); Context对象 Class对象 • Intent intent = new Intent(MainActivity.this,SecondActivity.class); startActivity(intent);