Android Activity和Fragment傳遞數據

1、Activity與Activity傳遞數據

UserLoginActivity.java：

Intent welcomePage = new Intent();
Bundle dataBundle = new Bundle();//將數據放在Bundle中
dataBundle.putString("email", mEmail);
dataBundle.putString("password", mPassword);
welcomePage.putExtras(dataBundle);//講數據放入下一個Intent
welcomePage.setClass(UserLoginActivity.this, WelcomeActivity.class);
startActivity(welcomePage);

WelcomeActivity.java：

Bundle dataBundle = this.getIntent().getExtras();//獲得當前Intent內數據Bundle
String email = dataBundle.getString("email");//從Bundle中獲得對應數據
TextView showEmail = (TextView)findViewById(R.id.showEmail);//查找Activity中的View
showEmail.setText("歡迎您~："+email);

2、Activity與Fragment 傳值

UserLoginActivity.java：同上

WelcomeActivity.java中Fragment，在onCreateView方法內：

View rootView = inflater.inflate(R.layout.fragment_welcome,container, false);//獲得根視圖
Bundle dataBundle = getActivity().getIntent().getExtras();//從當前<span style="font-family: Arial, Helvetica, sans-serif;">Activity中獲得Intent，並獲得數據Bundle</span>
String email = dataBundle.getString("email");
TextView showEmail = (TextView)rootView.findViewById(R.id.showEmail_fragment);//從根視圖中查找View
showEmail.setText("Fragment歡迎您~："+email);

3、Activity獲得Fragment ：

getFragmentManager().findFragmentById(R.layout.fragment_main);

其他更多Activity、Fragment  交互 和 通信 待調研~

Fragment限制：不能跨Activity共享