同样的问题

finish();  OR super.onBackPressed();

对我来说很好，两者都一样，但没有回报

只需调用这些方法来完成当前活动或通过onBackPressed返回

finish();

OR

onBackPressed();

如果你想去只是想去以前的活动使用

finish();

OR

onBackPressed();

如果你想去第二个活动或以下使用以下:

intent = new Intent(MyFourthActivity.this , MySecondActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
//Bundle is optional
Bundle bundle = new Bundle();
bundle.putString("MyValue1", val1);
intent.putExtras(bundle);
//end Bundle
startActivity(intent);

试试这个动作，因为你必须按后退键

finish();
super.onBackPressed();

试试这个， 第一个活动

Intent mainIntent = new Intent(Activity1.this, Activity2.class);
this.startActivity(mainIntent);

在第二个活动中

@Override
public void onBackPressed() {
    this.finish();
}

有一些情况可以回到你之前的活动:

情况1:如果你想把结果带回你之前的活动，那么 ActivityA.java

 Intent intent = new Intent(ActivityA.this, FBHelperActivity.class);
               startActivityForResult(intent,2);

FBHelperActivity.java

 Intent returnIntent = new Intent();
 setResult(RESULT_OK, returnIntent);
 finish();

案例2:ActivityA——> FBHelperActivity---->ActivityA

ActivityA.java

 Intent intent = new Intent(ActivityA.this, FBHelperActivity.class);
               startActivity(intent);

FBHelperActivity.java

after getting of result call finish();
 By this way your second activity will finish and because 
 you did not call finish() in your first activity then
 automatic first activity is in back ground, will visible.