avtivity开发总结1

1. activity跳转
2.  Intent intent = new Intent();
   
3.   intent.setClass(MainActivity.this, NextActivity.class)
4.   startActivity(intent);

5：getApplicationContext() 返回应用的上下文，生命周期是整个应用，应用摧毁它才摧毁

百度地图：private BMapManager mBMapManager = null;

mBmapManger = new BMapManager(this.getApplicationContext());