Question

我想凌驾于背顿的默认行为之上,以便它产生某种特定活动(在器具启动时所装载的活动),而不是先前在 st上的活动。这样做有什么好办法?

Answer 1

finish() all the intermediate Acitivities.

也可使用<条码>Intent.FLAG_ACTIVITY_IED_TOP。

@Override
public void onBackPressed()
{
Intent mIntent= new Intent(mContext, mainFirst.class)
    startActivity(mIntent);
    mIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    finish();
}

Answer 2

Intent myIntent = new Intent(CurrentActivity.this, NextActivity.class);
myIntent .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    CurrentActivity.this.startActivity(myIntent);

下一步行动是:

Answer 3

When you are using intent to go to next activity simply call finish() after that. eg Activity -1,2,3. Your flow is from 1->2->3

So when you call an intent from 2 to 3 just finish() activity 2 after that intent. so you ll return to 1 when you back press.

其他选择

@override onBackPressed

with intent to Activity 1. but you ll have to make sure you have only 1 instance of 1 by using corresponding flag

Answer 4

@Override
public void onBackPressed()
{
    startActivity(new Intent(mContext, FirstActivity.class));
    finish();
}

友情链接