back button functionality in android app

Question

I have to develop one android app. Here I wish to go back means I have used keyboard button only.but am shouldn't use keyboard back button. I wish to use the back button function for all activities.

For example:

If I have to click on the customize back button means I should able to go to the previous screen. How can I do?

android is not provide direct back button to go back activity but write programically add button — ckpatel, Nov 02 '12 at 06:56

score 4 · Accepted Answer · answered Nov 02 '12 at 07:18

MainActivity :

next.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(MainActivity.this,Second.class);
                startActivity(intent);
            }
        });

SecondActivity :

pre.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent = new Intent();
                finish();
            }
        });

score 0 · Answer 2 · answered Nov 02 '12 at 06:58

0

when you want to go back write the following line it will navigates you to back.

super.onBackPressed();

Here if you want to remove the device back button functionality remove the same line in onBackPressed() by overriding like below

@Override
protected void onBackPressed()
{
}

answered Nov 02 '12 at 06:58

TNR

5,839
3
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Hi if i have to click on the customize back button means i should able to go to the previous screen.how can i do – user1780331 Nov 02 '12 at 07:04
@user1780331 just call the YourActivity.super.onBackPressed() in the customized back button's onClick(). It worked for and should work for you. I have given you the explaination in my answer itself – TNR Nov 02 '12 at 07:45

score -1 · Answer 3 · answered Nov 02 '12 at 07:09

-1

You can create a back button, and in onclick() function, you need only call this : this.finish()

answered Nov 02 '12 at 07:09

Thanh Le

1,370
2
19
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score -1 · Answer 4 · answered Nov 02 '12 at 07:13

-1

Write this code, few months ago i have used this :-

ImageButton back = (ImageButton) findViewById(R.id.btn_back);
back.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
finish();
}
});

answered Nov 02 '12 at 07:13

Stanley Fox

26
5

Button back = (Button) findViewById(R.id.back); back.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); i have used this code.i have to run the app means and view more pages after click the custom back button means am getting first page only.but i wish to need the previous screen – user1780331 Nov 02 '12 at 07:17
now first of all i want to know that where you have putted that code in header or somewhere else if header so it will come in all... – Stanley Fox Nov 02 '12 at 07:30

back button functionality in android app

4 Answers4