Question

In my app I have 3 activities and I use onBackPressed for first, second and third activities. My need is I want to go from first activity -> second activity -> third activity and From third activity -> second activity -> first activity -> finsh()

I go first activity->second activity->third activity by Hawaii

My problems is when I press back key of emulator it comes in the following direction Third activity -> second activity -> first activity -> second activity -> first activity -> first activity -> and finsh(). Instead of finsh(), my app goes to second activity -> first activity -> first activity.

How to solve the problem. I do not know where I am wrong. Please help me. My code:

第一项活动:

       Button b1 = (Button)findViewById(R.id.first);
       b1.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
         Intent myintent=new Intent(first.this,second.class);
         startActivity(myintent);
          }
      });
    ......
public void onBackPressed() {
    Log.e("main-back","main-back");
    finish();
    super.onBackPressed();
}

第二项活动:

    Button b2 = (Button)findViewById(R.id.second);
    Log.e("main2", "main2");
    b2.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
         Intent myintent=new Intent(second.this,third.class);
         startActivity(myintent);
          }
      });        
    ........

@Override
public void onBackPressed() {
    Intent myintent=new Intent(second.this,first.class);
    startActivity(myintent);
    super.onBackPressed();
}

第三项活动:

public void onBackPressed() {
    Intent myintent=new Intent(third.this,second.class);
    startActivity(myintent);
    super.onBackPressed();
}

Answer 1

Stop launching activities in the method onBackPressed (I am assuming this is the method where you want to finish the current activity).

因此,在第二种和第三项活动方法中,onBackPressed 电话finish(<>/code>,就像第一项活动onBackPressed方法。

Answer 2

Button b2 = (Button)findViewById(R.id.second);
    Log.e("main2", "main2");
    b2.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
         Intent myintent=new Intent(second.this,third.class);
         startActivity(myintent);
          }
      });        

@Override
public void onBackPressed() 
{
    Intent myintent=new Intent(second.this,first.class);
    second.this.finish();
    startActivity(myintent);
    super.onBackPressed();
}

只是试图这样做。

友情链接