Android中2个activity之间的数据传递方法

    技术2022-05-19  19

    1. 通过intent来传递: activity1中设置 :       A.传字符等:   Java代码   String text = "hello";   Intent intent1 = new Intent(ActivityMain.this, Activity2.class);   intent1.putExtra("activity1", text);   startActivity(intent1);       B. 传对象,对象要实例化,继承Serializable   Java代码   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代码   Bundle extras = getIntent().getExtras();   if (extras != null) {       textview.setText(extras.getString("activity1"));   }   B.接收   Java代码   Bundle bundel = getIntent().getExtras();   user= (User) bundel.get("user"); 2. SharedPreferences 在activity1中设置的如下:   Java代码   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);   跳转到Message的activity,获取内容如下   Java代码   SharedPreferences share = getSharedPreferences("textinfo",0);   String text = share.getString("text", null);   msgtextview.setText(text);


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