转载自:
https://blog.csdn.net/oZhuiMeng123/article/details/80721284
1.页面回调原理
原理很简单:
由ActivityA通过startActivityForResult方法进行跳转到ActivityB,在ActivityB中SetResult()然后finish()掉ActivityB
在ActivityA中重写onActivityResult方法处理回调的操作。
2.相关代码:
ActivityA
Intent intent=new Intent(ActivityA.this,ActivityB.class);
intent.putExtra("statename","");
startActivityForResult(intent,888);//requestCode自己设置
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode==888&&requestCode==0){
//处理回调相关操作
}
}
ActivityB
Intent intent=new Intent();
intent.putExtra("mes","aa");//返回值
setResult(0,intent);//有返回值的使用这个,没有要返回的值用setResult(0);
finish();
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