[英]How do I get class file variable to another activity and access via button using intent not putExtra?
[英]How do I get the reference of an activity I opened using intent?
在我的MainActivity內部,打開SecondActivity
Intent intent = new Intent(this, SecondActivity.class);
startActivity(intent);
如何在MainActivity中獲取SecondActivity實例的引用?
//inside MainActivity
SecondActivity object = // make it equal to instance created above
通過觸發器意圖將處理程序傳遞給第二個處理程序,如下所示:
Intent intent = new Intent(this, SecondActivity.class);
intent.putExtra("Handler", handler);
startActivity(intent);
然后在您的SecondActivity中將消息和數據(可能是SecondActivity.this或其他您喜歡的實例)發布到處理程序。
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