Android 頁面回撥跳轉(startActivityForResult)
轉載自:
https://blog.csdn.net/oZhuiMeng123/article/details/80721284
1.頁面回撥原理
原理很簡單:
由ActivityA通過startActivityForResult方法進行跳轉到ActivityB,在ActivityB中SetResult()然後finish()掉ActivityB
在ActivityA中重寫onActivityResult方法處理回撥的操作。
2.相關程式碼:
ActivityA
Intent intent=new Intent(ActivityA.this,ActivityB.class);
intent.putExtra("statename","");
startActivityForResult(intent,888);//requestCode自己設定
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode==888&&requestCode==0){
//處理回撥相關操作
}
}
ActivityB
Intent intent=new Intent();
intent.putExtra("mes","aa");//返回值
setResult(0,intent);//有返回值的使用這個,沒有要返回的值用setResult(0);
finish();
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