handling activites and layouts android

 

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  • Saving Android Activity state using Save Instance State 25 answers

    • From Activity2, when clicking Button to go to Activity1 Simply on button.onClickListener Add this.finish();

    And don't explicitly call the Activity1.

    So your data wont be lost.

    只需使用startActivityForResult方法调用activity2并在单击按钮时从activity2调用setResult()然后在activity1 finish并处理onActivityResult事件，以获取更多信息，您可以参阅此Android startActivityForResult和相关的后Handling result

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