activity之间传递 intent 类型的参数

Intent adIntent = new Intent();
adIntent.putExtra("app", app);
adIntent.putExtra("space", space);
Bundle b = new Bundle();
b.putParcelable("eIntent", intent);
adIntent.putExtras(b);
context.startActivity(adIntent);

Intent intent = getIntent();
String app = intent.getStringExtra("app");
String space = intent.getStringExtra("space");
eIntent = intent.getParcelableExtra("eIntent");