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onActivityResult() 和onResume()的调用顺序问题

2015-06-10 12:05 686 查看
得到如下的回答:

protected void onActivityResult (int requestCode, int resultCode, Intent data)

Since: API Level 1 Called when an activity you launched exits, giving you the requestCode you started it with, the resultCode it returned, and any additional data from it. The resultCode will be RESULT_CANCELED if the activity explicitly returned that, didn’t return any result, or crashed during its operation. You will receive this call immediately before onResume() when your activity is re-starting.

翻译过来如下:

protected void onActivityResult (int requestCode, int resultCode, Intent data)

当你调用完一个存在的activity之后,onActivityResult将会返回以下数据:你调用时发出的requestCode、被调用activity的结果标志resultCode(如RESULT_OK)和其他的额外数据。我们期望的都是得到RESULT_OK,表示调用成功,但是当被调用activity什么也没返回,或者调用过程中发生崩溃时,resultCode的值会为RESULT_CANCELED,重新回到调用activity时会马上执行onActivityResult方法,然后才是onResume()方法。

由此可见onActivityResult()发生在onResume()之前。
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