Android中2個activity之間的資料傳遞方法

來源:互聯網
上載者:User

1. 通過intent來傳遞:

activity1中設定

      A.傳字元等:

  Java代碼

  String text = "hello";

  Intent intent1 = new Intent(ActivityMain.this, Activity2.class);
  intent1.putExtra("activity1", text);

  startActivity(intent1);

      B. 傳對象,對象要執行個體化,繼承Serializable

  Java代碼

  Bundle mbundle=new Bundle();
    mbundle.putSerializable("user",userList.get(position));

  Intent in =new Intent (getApplicationContext(), activity2.class);
  in.putExtras(mbundle);

  startActivity(in);

activity2中接收:

      A:接收

  Java代碼

  Bundle extras = getIntent().getExtras();

  if (extras != null) {
      textview.setText(extras.getString("activity1"));
  }

  B.接收

  Java代碼

  Bundle bundel = getIntent().getExtras();
  user= (User) bundel.get("user");

2. SharedPreferences

在activity1中設定的如下:

  Java代碼

  SharedPreferences sp = getSharedPreferences("textinfo",0);
  Editor editor = sp.edit();
  String text = "hello";

  editor.putString("text", text);
  editor.commit();

    Intent i = new Intent(getApplicationContext(),activity2.class);

  startActivity(i);

  跳轉到Message的activity,擷取內容如下

  Java代碼

  SharedPreferences share = getSharedPreferences("textinfo",0);
  String text = share.getString("text", null);
  msgtextview.setText(text);

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